merge: sync main and preserve prepared delete ownership

test(ecstore): preserve control progress during physical pause
fix(ecstore): compile legacy delete helpers only in tests
2026-10-27 14:27:10 +00:00 · 2026-10-25 22:13:43 +08:00 · 2026-10-25 21:46:10 +08:00 · 2026-10-25 20:56:56 +08:00 · 2026-10-25 20:46:44 +08:00 · 2026-10-25 20:46:28 +08:00
276 changed files with 66907 additions and 51425 deletions
@@ -25,7 +25,7 @@ Read only the current phase's procedure; retain completed evidence across turns.
 | 4–5 | [Run the downloaded binary, Console CRUD, and latest-rc matrix](references/preview-acceptance.md). Every check must pass. |
 | Confirmation | Complete the gate below and end the turn. |
 | 6 | After fresh confirmation, [publish and verify the final tag](references/final-release.md) at `PREVIEW_HASH`. |
-| 7 | [Reconcile Security Advisories, milestones, installation references, and the website; reconcile main and remove the completed release branch](references/post-release-updates.md) only after complete publication. |
+| 7 | [Reconcile Security Advisories, milestones, installation references, and the website](references/post-release-updates.md) only after complete publication. |

 ## Human Confirmation

@@ -37,6 +37,6 @@ Only a new affirmative user reply to that exact report authorizes Phase 6. The o

 - Before the final tag exists, land fixes on main, backport to the candidate, verify target versions, and restart branch CI/acceptance. Use a new preview iteration once a preview was tagged; main may advance independently.
 - Once the final tag exists, retry publication jobs for that exact tag. A source fix requires a newly confirmed target, not retagging or a newer preview. Phase 7 retries recheck artifact availability and superseding releases.
- If abandoned after the bump merged, report the unpublished version on main and record whether to revert or let the next release overwrite it. Deleting unpublished candidate branches or preview tags requires an explicit decision. Completed release branches follow Phase 7 cleanup; keep release tags.
+- If abandoned after the bump merged, report the unpublished version on main and record whether to revert or let the next release overwrite it. Deleting candidate branches or preview tags requires an explicit decision.

 Report completed phase results and incomplete work with evidence: Console previous/latest tags, release need, hash and run/Release URLs; target, branch CI/SHA, previews and hash, confirmation state; preview/final assets, latest-channel state, Console/rc results and cleanup; advisory reconciliation results and pending disclosure decisions; both milestone states, installation PR checks/merge state, and website text/link/PR/deployment state. Keep artifact publication separate from follow-up delivery; do not call an open PR a live update. Report deviations and their authorization.
@@ -48,10 +48,3 @@ Use the existing announcement configuration from [website PR #112](https://githu
 3. Use the site's current package manager and required checks. For this config-only change, type-check and lint the changed file, build the site, and inspect the generated homepage for the version, visible link text, and destination. Confirm `/download` actually offers the announced version before using that link.
 4. Commit, push, and create or update the website PR when included in the authorized release scope. Include the published RustFS Release URL and checks run. Keep merge and production-deployment authority separate; reuse permission already given, but this reference grants none by itself.
 5. After an authorized merge/deployment, verify the live `https://rustfs.com/` banner and its destination. If only the PR is ready, report that state and URL; do not report the banner as deployed. A website failure does not invalidate or move the published release tag: retry this phase after resolving the failure.
-
-## Reconcile main and remove the completed release branch
-
-1. Compare the exact published tag with current main. Audit every release-side commit since their merge base, including inherited backports. An ahead count is a history difference, not proof of missing changes. Use ancestry and patch equivalence, then inspect current code and regression evidence for squashed, adapted, superseded, or reverted changes. Record each commit as present, superseded, release-only, or missing; a positive `git cherry` result alone does not prove a missing fix.
-2. Bring missing shared changes to main through a reviewed PR and the required checks before closing the follow-up. Preserve main's later changes; decide version bumps and pinned Console configuration separately. If a history merge is needed, use a merge commit and verify the release commit is an ancestor of main; squash does not establish that ancestry. Do not merge main into the published release branch or move its tags. Report unresolved changes instead of claiming reconciliation is complete.
-3. After publication and authorized follow-ups are complete, delete the remote `release/<target>` branch. Immediately before deletion, verify its HEAD still equals the published tag's commit and no open PR targets or originates from it. Preserve a branch with newer work or open PRs and report the blocker. Use a deletion with an expected-old-SHA check to avoid removing a concurrently advanced branch.
-4. Verify the remote branch is absent and the final and preview tags still resolve to their recorded commits. Remove a local release branch only if it is task-owned, unchecked out, and has no unpreserved work. Record cleanup separately from artifact publication; an explicitly authorized deletion before reconciliation does not make unresolved main changes complete.
@@ -1,2 +1,2 @@
-sha256-linux=14becc458b9eb24add510d94ee6cd04ba1fb19907d598effe1524e5242400d10
-sha256-darwin=14becc458b9eb24add510d94ee6cd04ba1fb19907d598effe1524e5242400d10
+sha256-linux=74a1d6975e2d6dfe01363585cb9bfa3232d79556a154d4f599653fe2ed1ce696
+sha256-darwin=74a1d6975e2d6dfe01363585cb9bfa3232d79556a154d4f599653fe2ed1ce696
@@ -1,2 +1,2 @@
-sha256-darwin=a67a347f26be186c598b5beaf68e6bcbe1855350a35e1423dd5b8a81bcba06a5
-sha256-linux=ad4fabe811c6cca1aba89fad34ccd404b5832a6a955875c2826f6e0fa1ea4f1f
+sha256-darwin=b53fe6d46cdffedfad6a83da0dfffa9aec10cd7c8ace53469f129587bc9f4d50
+sha256-linux=6be90f5c3886e9852ac27d51f2d47e6d2fa8bb424e0d03ee931268dcd0020db8
@@ -1,2 +1,2 @@
-sha256-darwin=3814cdde8cacf4187e18188d342ed70931cc32e268e42e5bb438d565bb4d0f81
-sha256-linux=663025a80273579f95ae3f49af02c0afcbfce94df09701c360a13e607b7637db
+sha256-darwin=347a0d4e5e547d5388703062ce66a66167a845b6e57ec591ccb4c732a567c68d
+sha256-linux=4f9efa47194279185bb68249e82c788fa147abe944b6c764050e3d47f31e7926
@@ -1 +1 @@
-sha256=f065e7071aac9d48a7c1b301f328fa7cc14f11c4e7dc46da3e55057c4ea29bd5
+sha256=002ec5d973f82288e50a096a2c8b3b38749f62a7a3e169775566874d8ee98b4a
@@ -29,7 +29,7 @@
    {
      "invariant": "list-uncommitted-version",
      "suite": "rustfs-filemeta",
-      "name": "metacache::tests::resolve_merge_keeps_the_newest_version_at_listing_quorum"
+      "name": "metacache::tests::resolve_with_write_quorum_slack_keeps_partial_latest_hidden_during_merge"
    },
    {
      "invariant": "minio-object-fixture",
@@ -241,6 +241,11 @@
      "suite": "rustfs-ecstore",
      "name": "store::list_objects::differential_tests::list_objects_shared_corpus_cancelled_quorum_walk_releases_senders_and_disk_lock"
    },
+    {
+      "invariant": "list-objects-shared-corpus-enabled-index-contracts",
+      "suite": "rustfs-ecstore",
+      "name": "store::list_objects::differential_tests::list_objects_shared_corpus_enabled_index_contracts"
+    },
    {
      "invariant": "borrowed-context-boundary",
      "suite": "rustfs-ecstore",
@@ -68,17 +68,6 @@ command = ['sh', '-c', 'echo RUST_MIN_STACK=33554432 >> "$NEXTEST_ENV"']
 # boundaries. Reserve the run's capacity so unrelated fixtures cannot starve
 # their existing deadlines and typed-failure assertions (rustfs/backlog#2706).
 # Keep each test's internal concurrency and zero-retry policy unchanged.
-[[profile.default.overrides]]
-filter = """
-package(rustfs-ecstore) & (
-    test(/^set_disk::ops::multipart::tests::complete_multipart_(quorum_success_releases_logical_guards_before_physical_tail|waits_for_tail_before_releasing_guards_and_marking_capacity)$/)
-    | test(=store::heal::tests::full_format_heal_lost_after_last_save_does_not_publish_or_renew_and_latches)
-    | test(/^store::init::tests::(decommission_durable_ilm_receipt_pagination_fails_closed_on_second_page|dispatch_manifest_shutdown_(drains_admitted_delete_batch_without_tail_admission|stops_aborting_validation_tail_reads|stops_authorized_tail_reads_before_receipt_or_cas))$/)
-    | (binary(metadata_read_lock_reuse_test) & test(=replica_multipart_completes_while_metadata_writer_waits_for_its_snapshot))
-)
-"""
-threads-required = "num-test-threads"
-
 [[profile.default.overrides]]
 filter = 'package(rustfs) & test(/^connect::diagnostics::schedule::tests::/)'
 threads-required = "num-test-threads"
@@ -362,17 +351,6 @@ path = "junit.xml"

 # Match the local durable-progress reservations. All members, deadlines,
 # assertions, and internal concurrency remain enabled without retries.
-[[profile.ci.overrides]]
-filter = """
-package(rustfs-ecstore) & (
-    test(/^set_disk::ops::multipart::tests::complete_multipart_(quorum_success_releases_logical_guards_before_physical_tail|waits_for_tail_before_releasing_guards_and_marking_capacity)$/)
-    | test(=store::heal::tests::full_format_heal_lost_after_last_save_does_not_publish_or_renew_and_latches)
-    | test(/^store::init::tests::(decommission_durable_ilm_receipt_pagination_fails_closed_on_second_page|dispatch_manifest_shutdown_(drains_admitted_delete_batch_without_tail_admission|stops_aborting_validation_tail_reads|stops_authorized_tail_reads_before_receipt_or_cas))$/)
-    | (binary(metadata_read_lock_reuse_test) & test(=replica_multipart_completes_while_metadata_writer_waits_for_its_snapshot))
-)
-"""
-threads-required = "num-test-threads"
-
 [[profile.ci.overrides]]
 filter = 'package(rustfs) & test(/^connect::diagnostics::schedule::tests::/)'
 threads-required = "num-test-threads"
@@ -19,11 +19,9 @@ on:
    paths:
      - ".github/workflows/e2e-upgrade.yml"
      - "crates/e2e_test/src/common.rs"
-      - "crates/e2e_test/src/distributed/**"
      - "crates/e2e_test/src/fake_s3_target/**"
      - "crates/e2e_test/src/lib.rs"
      - "crates/e2e_test/src/replication_extension_test.rs"
-      - "crates/e2e_test/src/rpc_fault_proxy.rs"
      - "crates/e2e_test/src/upgrade_compatibility_test.rs"
      - "crates/ecstore/**"
      - "crates/filemeta/**"
@@ -130,7 +128,6 @@ jobs:
        run: chmod +x target/debug/rustfs

      - name: Verify and unpack pinned previous release
-        id: verify_source
        env:
          SOURCE_DIR: ${{ runner.temp }}/rustfs-upgrade-source
        run: |
@@ -188,28 +185,6 @@ jobs:
          done
          exit "$status"

-      - name: Run mixed-version MPU recovery
-        if: ${{ !cancelled() && steps.verify_source.outcome == 'success' }}
-        timeout-minutes: 15
-        env:
-          NO_PROXY: 127.0.0.1,localhost,::1
-          HTTP_PROXY: ""
-          HTTPS_PROXY: ""
-          ALL_PROXY: ""
-          RUSTFS_E2E_LOG_FILTER: "warn,rustfs_ecstore::cluster::rpc::client=debug"
-        run: |
-          set -euo pipefail
-          export no_proxy="$NO_PROXY"
-          export RUSTFS_E2E_LOG_DIR="$RUNNER_TEMP/rustfs-upgrade-logs/mpu-mixed-recovery"
-          mkdir -p "$RUSTFS_E2E_LOG_DIR"
-          mpu_test='distributed::multipart_fence_acceptance_test::mixed_version_failed_complete_requires_current_coordinator_for_abort'
-          python3 scripts/e2e_binary.py run -- cargo test --locked -p e2e_test --lib \
-            "$mpu_test" -- --list --exact | tee "$RUSTFS_E2E_LOG_DIR/list.log"
-          test "$(grep -Fxc "${mpu_test}: test" "$RUSTFS_E2E_LOG_DIR/list.log")" -eq 1
-          python3 scripts/e2e_binary.py run -- cargo test --locked -p e2e_test --lib \
-            "$mpu_test" -- --exact --nocapture --test-threads=1 \
-            2>&1 | tee "$RUSTFS_E2E_LOG_DIR/test.log"
-
      - name: Upload scanner/heal G09 evidence
        if: always()
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
@@ -25,6 +25,8 @@ on:
      - "crates/ecstore/src/object_api/write_commit_context.rs"
      - "crates/ecstore/src/bucket/utils.rs"
      - "crates/ecstore/Cargo.toml"
+      - "crates/storage-api/src/bucket.rs"
+      - "crates/storage-api/Cargo.toml"
      - "crates/utils/src/dunce.rs"
      - "crates/utils/src/os/**"
      - "crates/utils/Cargo.toml"
@@ -48,6 +50,8 @@ on:
      - "crates/ecstore/src/object_api/write_commit_context.rs"
      - "crates/ecstore/src/bucket/utils.rs"
      - "crates/ecstore/Cargo.toml"
+      - "crates/storage-api/src/bucket.rs"
+      - "crates/storage-api/Cargo.toml"
      - "crates/utils/src/dunce.rs"
      - "crates/utils/src/os/**"
      - "crates/utils/Cargo.toml"
@@ -103,10 +107,6 @@ jobs:
        shell: pwsh
        run: cargo test -p rustfs-ecstore --lib rename_all_ -- --nocapture

-      - name: Test multipart parent durability barriers
-        shell: pwsh
-        run: cargo test -p rustfs-ecstore --lib multipart_owned_record_parent_barriers_ -- --nocapture
-
      - name: Test Windows path conversion
        shell: pwsh
        run: "cargo test -p rustfs-utils --no-default-features --features path --lib dunce:: -- --nocapture"
@@ -144,6 +144,17 @@ jobs:
        shell: pwsh
        run: "cargo test -p rustfs-ecstore --lib bucket::utils:: -- --nocapture"

+      - name: Test artifact prefix Windows file-name rules
+        shell: pwsh
+        run: |
+          $testName = 'bucket::tests::artifact_prefix_preserves_host_file_name_rules'
+          cargo test --locked -p rustfs-storage-api --lib $testName -- --exact --nocapture --color never 2>&1 |
+            Tee-Object -Variable testOutput
+          if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+          if (($testOutput -join "`n") -notmatch 'test result: ok\. 1 passed; 0 failed; 0 ignored;') {
+            throw 'Expected exactly one passing artifact prefix test on Windows'
+          }
+
      - name: Test Windows file-name rules
        shell: pwsh
        run: "cargo test -p rustfs-utils --no-default-features --features path --lib dunce:: -- --nocapture"
@@ -365,9 +365,9 @@ checksum = "d3fb67a6e08acf24fdeccbac2cb6ac4305825bd1f117462e0e6f2f193345ad56"

 [[package]]
 name = "arrow"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f04e0a89cc175eaf3740282537851e6fd9d7276f97730b9d0ea2859c11a85df"
+checksum = "4c25317ebddb8f2e6f006759336c95e5ded847a446f3524c27853bfe7d77a69b"
 dependencies = [
 "arrow-arith",
 "arrow-array",
@@ -386,9 +386,9 @@ dependencies = [

 [[package]]
 name = "arrow-arith"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "157943c720919e8f5b6731407ce5cd4c9a5ef47a75bf10edaf24b7081b5763ef"
+checksum = "2ab555c0ffe9cb817041c0cee80baa9663a22225d0a035693579771f2693cadc"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -400,9 +400,9 @@ dependencies = [

 [[package]]
 name = "arrow-array"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b5b1682924f11ecf6929689c16cbc69efbb6dd141b06ad98ee1cb10d858c43"
+checksum = "2dae1d91737421e92c6dd7c7f9d0f2d25198fd6fc539738b628f4dad10adf533"
 dependencies = [
 "ahash",
 "arrow-buffer",
@@ -419,9 +419,9 @@ dependencies = [

 [[package]]
 name = "arrow-buffer"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5d687afc6c927965a8a759f3b68de91933d9dfa2e1bb6e156bac84b85665e92"
+checksum = "1fe9cd0064f2d7cf8ecfaf77cd70e67a980bc71aea92b63102bd37a7d3379a09"
 dependencies = [
 "bytes",
 "half",
@@ -431,9 +431,9 @@ dependencies = [

 [[package]]
 name = "arrow-cast"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f23c3379feede42135ef27ca60e67f6e643cd4343ae74e4c8b16c83f55afd85"
+checksum = "ee510bc252781d700400979a96bd1eadebeae23901132bbabd92118da1b376c5"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -453,9 +453,9 @@ dependencies = [

 [[package]]
 name = "arrow-csv"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85b1984628b091b8319b3c305fce21d04f9e9b2578bb733b0d0108462ae1d698"
+checksum = "ace83d5935421b950fea3a0a3f9972c0837c297ef98ade57127a5661b681112c"
 dependencies = [
 "arrow-array",
 "arrow-cast",
@@ -468,9 +468,9 @@ dependencies = [

 [[package]]
 name = "arrow-data"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb0a031c7ff5e2bdb443117054fb466af1d4df5b7f0ecbe197713dc8b113b1ba"
+checksum = "54f128c73bb7fe9f7137218f910edd5b436f390e0f040b1956f5028390787897"
 dependencies = [
 "arrow-buffer",
 "arrow-schema",
@@ -481,9 +481,9 @@ dependencies = [

 [[package]]
 name = "arrow-ipc"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5dd1afadda2eb821aaf851bb4c0adef60c30cc0f1a29bd02fb99dd07fb9f58d"
+checksum = "8e244f39b82fa7a823e8b5984a0bd988234f9c92c1df79378fb85090e6e4c821"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -497,9 +497,9 @@ dependencies = [

 [[package]]
 name = "arrow-json"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2bc4d56a0dad84cc51c5812ccff48b642047a1f3be80349cd84318983e79edb"
+checksum = "727b21ebf8894dcd9504d6ab66bffdac338391e1f85cde594526a0210299ea40"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -522,9 +522,9 @@ dependencies = [

 [[package]]
 name = "arrow-ord"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "561b8209faa2cd489764b7fd07d7cb9e8d274d78048c38de59f77c41140cb834"
+checksum = "70d376b9b883239ae0f9963cdeeb59126ccaac08d60adf208a6ad3e2dd4048c3"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -535,9 +535,9 @@ dependencies = [

 [[package]]
 name = "arrow-row"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d8c68b87a569f92b90c46cb0a09d86bd9609ddc9b1bf1fc5a503c8c6907c14e"
+checksum = "48096811f92b5c3a0c59d33cfecd7d7d2ed037d81e54a27a42d232e7700e6de2"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -548,9 +548,9 @@ dependencies = [

 [[package]]
 name = "arrow-schema"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e87acb0c6bf6237fca7a50d7b51e801c98a18a5fe6f3bb34f7d77b85ca165388"
+checksum = "37b6c8a6b12cf3869d299ce36ed8e1cd6fe9836264b68fb6c6538473a36124a1"
 dependencies = [
 "serde_core",
 "serde_json",
@@ -558,9 +558,9 @@ dependencies = [

 [[package]]
 name = "arrow-select"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c844141958d805b47d1208e0d12aac53fcf388ce8011639fe82aa492adde0bb4"
+checksum = "e523e85fa9fb3181a391bf0edfa6a1ae0dc46df8cbf7f6b96034dcb1e2a7a04a"
 dependencies = [
 "ahash",
 "arrow-array",
@@ -572,9 +572,9 @@ dependencies = [

 [[package]]
 name = "arrow-string"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc130892b1a9552da77971924b390e06cf375d1f7e4344a7b7b40ca4426fa470"
+checksum = "b931a905a0e4b8832d9f54fb369cf6e545f9dc03cb3d9611216a7bd2653df60a"
 dependencies = [
 "arrow-array",
 "arrow-buffer",
@@ -1514,23 +1514,6 @@ dependencies = [
 "serde",
 ]

-[[package]]
-name = "bindgen"
-version = "0.73.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "787ef8ef523575546b106a58213d6e6b06198a05c2f757258c68a74273670cfa"
-dependencies = [
- "bitflags 2.13.2",
- "cexpr",
- "clang-sys",
- "proc-macro2",
- "quote",
- "regex",
- "rustc-hash",
- "shlex",
- "syn 3.0.9",
-]
-
 [[package]]
 name = "binrw"
 version = "0.15.2"
@@ -1743,13 +1726,13 @@ dependencies = [

 [[package]]
 name = "brotli"
-version = "9.1.0"
+version = "9.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6737ce8b81460bf9407909f73ff50bf13f7cb8577e1e76715f57ed0eba58ba44"
+checksum = "f8b851b75c23ca7873623d612fe49bd1989aeb03d08fb9432187eb253d3d4c6b"
 dependencies = [
 "alloc-no-stdlib 3.0.0",
 "alloc-stdlib 0.3.0",
- "brotli-decompressor 6.2.0",
+ "brotli-decompressor 6.0.1",
 ]

 [[package]]
@@ -1764,9 +1747,9 @@ dependencies = [

 [[package]]
 name = "brotli-decompressor"
-version = "6.2.0"
+version = "6.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34c6783f42c21c952ad7112b354f0ba2f10760e9decea5b1b60523d6e270faaf"
+checksum = "941cd9bd4ddab83cb46fa5a2d428f1c857b24ac78cb876cf7beb710840934bd7"
 dependencies = [
 "alloc-no-stdlib 3.0.0",
 "alloc-stdlib 0.3.0",
@@ -1984,15 +1967,6 @@ dependencies = [
 "shlex",
 ]

-[[package]]
-name = "cexpr"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
-dependencies = [
- "nom 7.1.3",
-]
-
 [[package]]
 name = "cfg-if"
 version = "1.0.5"
@@ -2109,17 +2083,6 @@ dependencies = [
 "zeroize",
 ]

-[[package]]
-name = "clang-sys"
-version = "1.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "157a8ba7b480713b56f4c09fd13fc3e0a22a5dfab8097ba61cbc5feef950788a"
-dependencies = [
- "glob",
- "libc",
- "libloading",
-]
-
 [[package]]
 name = "clap"
 version = "4.6.7"
@@ -2236,7 +2199,7 @@ version = "0.4.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cae36683101b2899f48bd31f8db9839437356188e3b1ff23096e73dab09ba8fe"
 dependencies = [
- "brotli 9.1.0",
+ "brotli 9.0.0",
 "bzip2",
 "compression-core",
 "flate2",
@@ -2244,7 +2207,7 @@ dependencies = [
 "lz4",
 "memchr",
 "zstd 0.14.3",
- "zstd-safe",
+ "zstd-safe 8.2.0",
 ]

 [[package]]
@@ -2579,9 +2542,9 @@ checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"

 [[package]]
 name = "crypto-bigint"
-version = "0.7.10"
+version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c035cb64cba03dad2fb921f3e218785e8cf9a41790da5eb3a1400f62fa2be11"
+checksum = "cc907c45bb7e9ef8fc3778defd0f3cd8c81288f1b4e748eba064948f20c47122"
 dependencies = [
 "cpubits",
 "ctutils",
@@ -2657,9 +2620,9 @@ dependencies = [

 [[package]]
 name = "ctutils"
-version = "0.4.6"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe3e9d21d39e6f39ff46e03d5b621424f88ee23d8a1672c6bfc9ccc7f2da4f6a"
+checksum = "38d28fb6aa7dd680b3ffd1a3e64e115c177bdba63c0ae7f9cd48129ff05c4fa0"
 dependencies = [
 "cmov",
 "subtle",
@@ -3669,9 +3632,9 @@ dependencies = [

 [[package]]
 name = "der"
-version = "0.8.3"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a996a108feb8b427a6e12fcf6af4aa83409b79d72c15337d7741368131ee004"
+checksum = "a878c850e9e421b20262e9b41f9c860e4785fa07541c266b62ff9d1ef998a80a"
 dependencies = [
 "const-oid 0.10.2",
 "pem-rfc7468 1.0.0",
@@ -4077,7 +4040,6 @@ dependencies = [
 "rustfs-utils",
 "rustls",
 "s3s",
- "same-file",
 "serde",
 "serde_json",
 "serde_urlencoded",
@@ -4104,7 +4066,7 @@ version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0681a4fc24c767085329728d8dfba959af91228aa4610cca4f8ce317ba46ae0"
 dependencies = [
- "der 0.8.3",
+ "der 0.8.2",
 "digest 0.11.3",
 "elliptic-curve",
 "rfc6979",
@@ -4169,9 +4131,9 @@ checksum = "0e9c71c2167ca323c882b99918929403426e2373ea17242ff5653e0d5e1058be"

 [[package]]
 name = "elliptic-curve"
-version = "0.14.3"
+version = "0.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "900f37e7e18d74a2347389af6cd69e3a30d5cc9e697f40004865679aa75e9c7c"
+checksum = "0ad4496221fcfc21015fd8c0e26fcfab00504832dc0604f52acdd7bad2a8dc81"
 dependencies = [
 "base16ct",
 "crypto-bigint",
@@ -5273,9 +5235,9 @@ dependencies = [

 [[package]]
 name = "hotpath"
-version = "0.29.2"
+version = "0.29.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b4af2b5ecf2650278fe33b0e49b68c8c484d2306475c127628316dea740cf5c"
+checksum = "62f2351902fa259b758c7303505273393f6b08172ab5bdd5739a2d2bc6d554e8"
 dependencies = [
 "arc-swap",
 "async-channel",
@@ -5308,15 +5270,15 @@ dependencies = [

 [[package]]
 name = "hotpath-drain"
-version = "0.29.2"
+version = "0.29.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5cceb6c15fbaaeb00b51acc7be7fad533d0b56cb422b1cfc16cf9ca1624d33a"
+checksum = "83dab2340134d9976d62f9f5172f9c6584c7f521b092f258e0e58e412e160b53"

 [[package]]
 name = "hotpath-macros"
-version = "0.29.2"
+version = "0.29.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08c0a42eb299ebb7ec6b9161489e5bf132603a34ca12cecadb8490937aa0492a"
+checksum = "a04bbe5701b097f224a08187a78b75bb9d9b4bbaff6a279c2a50ba73edbb7aac"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -6436,7 +6398,7 @@ dependencies = [
 "hashbrown 0.16.1",
 "indexmap 2.14.2",
 "metrics",
- "ordered-float 5.5.1",
+ "ordered-float 5.5.0",
 "quanta",
 "radix_trie",
 "rand 0.9.5",
@@ -7370,9 +7332,9 @@ dependencies = [

 [[package]]
 name = "ordered-float"
-version = "5.5.1"
+version = "5.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f59006ce1e204c30956638535b74d317bca99477b9356dfaec54c37f6f600ab"
+checksum = "8c7c9e0d9b23589f26070720bac724174bfec1083e82f7854cdd0267518343c0"
 dependencies = [
 "num-traits",
 ]
@@ -7489,9 +7451,9 @@ dependencies = [

 [[package]]
 name = "pageant"
-version = "0.2.5"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0bc922d9aa8cfcf598de27b3c6122cb2eeda9d6fe71527a22ebcb7f633540ff"
+checksum = "f0786409b5aaa884655c9b4065681db0835db0cc185a6fb19fb17a5d38656866"
 dependencies = [
 "base16ct",
 "byteorder",
@@ -7560,9 +7522,9 @@ dependencies = [

 [[package]]
 name = "parquet"
-version = "59.3.2"
+version = "59.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8eb260d566f2fbdabe356d26aaa5d13403aac29b5b4e44463b8f9bd7b2b12680"
+checksum = "8b3d2ef0fb136e9341570f219ecb168902e76079c6d81ad555f0a4840b1e08a3"
 dependencies = [
 "ahash",
 "arrow-array",
@@ -7847,7 +7809,7 @@ version = "0.8.0-rc.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "986d2e952779af96ea048f160fd9194e1751b4faea78bcf3ceb456efe008088e"
 dependencies = [
- "der 0.8.3",
+ "der 0.8.2",
 "spki 0.8.1",
 ]

@@ -7890,7 +7852,7 @@ dependencies = [
 "aes 0.9.3",
 "aes-gcm",
 "cbc 0.2.1",
- "der 0.8.3",
+ "der 0.8.2",
 "pbkdf2 0.13.0",
 "rand_core 0.10.1",
 "scrypt 0.12.0",
@@ -7914,7 +7876,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "451913da69c775a56034ea8d9003d27ee8948e12443eae7c038ba100a4f21cb7"
 dependencies = [
- "der 0.8.3",
+ "der 0.8.2",
 "pkcs5 0.8.1",
 "rand_core 0.10.1",
 "spki 0.8.1",
@@ -9176,9 +9138,9 @@ dependencies = [

 [[package]]
 name = "russh"
-version = "0.65.0"
+version = "0.64.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3bb77a4b259312b2abbc541bca1c13cb4e9b61c560a7fd894068c3b92e0c9dc3"
+checksum = "ba61e87b9ec9a39a59a6bbed4c0b8ff7fb07073405b24a767a1f2c8560ac8f58"
 dependencies = [
 "aes 0.9.3",
 "aws-lc-rs",
@@ -9193,7 +9155,7 @@ dependencies = [
 "curve25519-dalek 5.0.0",
 "data-encoding",
 "delegate",
- "der 0.8.3",
+ "der 0.8.2",
 "digest 0.11.3",
 "ecdsa",
 "ed25519-dalek 3.0.0",
@@ -10336,6 +10298,7 @@ dependencies = [
 "tokio",
 "tracing",
 "tracing-subscriber",
+ "uuid",
 ]

 [[package]]
@@ -10725,6 +10688,7 @@ dependencies = [
 "hotpath",
 "insta",
 "rustfs-filemeta",
+ "rustfs-utils",
 "serde",
 "serde_json",
 "time",
@@ -10884,7 +10848,7 @@ version = "1.0.2"
 dependencies = [
 "base64-simd",
 "blake2",
- "brotli 9.1.0",
+ "brotli 9.0.0",
 "bytes",
 "convert_case 0.12.0",
 "crc-fast",
@@ -11345,7 +11309,7 @@ checksum = "d56d437c2f19203ce5f7122e507831de96f3d2d4d3be5af44a0b0a09d8a80e4d"
 dependencies = [
 "base16ct",
 "ctutils",
- "der 0.8.3",
+ "der 0.8.2",
 "hybrid-array",
 "subtle",
 "zeroize",
@@ -11511,15 +11475,6 @@ dependencies = [
 "syn 3.0.9",
 ]

-[[package]]
-name = "serde_spanned"
-version = "1.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e7523beb55eece201a2356bee0bbca0d1ab466c14c07703b2e0ee6d42cb0c2c"
-dependencies = [
- "serde_core",
-]
-
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
@@ -11799,9 +11754,9 @@ checksum = "33f4fe9184a62d842c9ef383018f3306d8ba224fd9d836f56d7288308847c256"

 [[package]]
 name = "sketches-ddsketch"
-version = "0.3.2"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45f82fa313d625dd72aaa65ec0c9f8c95407add0510c1bef3c18ea7257ec34ce"
+checksum = "0c6f73aeb92d671e0cc4dca167e59b2deb6387c375391bc99ee743f326994a2b"

 [[package]]
 name = "slab"
@@ -11930,7 +11885,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ef958a98b9d5da290cfc78946e9f3e61e1e62a18db0d92cac0b83cc161491a9"
 dependencies = [
 "base64ct",
- "der 0.8.3",
+ "der 0.8.2",
 ]

 [[package]]
@@ -12679,30 +12634,6 @@ dependencies = [
 "webpki-roots 0.26.11",
 ]

-[[package]]
-name = "toml"
-version = "0.9.12+spec-1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf92845e79fc2e2def6a5d828f0801e29a2f8acc037becc5ab08595c7d5e9863"
-dependencies = [
- "indexmap 2.14.2",
- "serde_core",
- "serde_spanned",
- "toml_datetime 0.7.5+spec-1.1.0",
- "toml_parser",
- "toml_writer",
- "winnow 0.7.15",
-]
-
-[[package]]
-name = "toml_datetime"
-version = "0.7.5+spec-1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92e1cfed4a3038bc5a127e35a2d360f145e1f4b971b551a2ba5fd7aedf7e1347"
-dependencies = [
- "serde_core",
-]
-
 [[package]]
 name = "toml_datetime"
 version = "1.1.2+spec-1.1.0"
@@ -12719,9 +12650,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3641d5bbb5349a79e1020a242d251efbc546ad8048d133958323ce9c40a9c9c"
 dependencies = [
 "indexmap 2.14.2",
- "toml_datetime 1.1.2+spec-1.1.0",
+ "toml_datetime",
 "toml_parser",
- "winnow 1.0.4",
+ "winnow",
 ]

 [[package]]
@@ -12730,15 +12661,9 @@ version = "1.1.5+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baa693a8032d7e1cada7d0041e96126df243179ff061456783ac7f12bda4744c"
 dependencies = [
- "winnow 1.0.4",
+ "winnow",
 ]

-[[package]]
-name = "toml_writer"
-version = "1.1.3+spec-1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06bdbd8cfc056b8d2e2e85f29b56a3bdbecb527cef81eb39e3e7b98af4652770"
-
 [[package]]
 name = "tonic"
 version = "0.14.6"
@@ -13765,12 +13690,6 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"

-[[package]]
-name = "winnow"
-version = "0.7.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df79d97927682d2fd8adb29682d1140b343be4ac0f08fd68b7765d9c059d3945"
-
 [[package]]
 name = "winnow"
 version = "1.0.4"
@@ -14037,9 +13956,9 @@ dependencies = [

 [[package]]
 name = "zip"
-version = "9.1.2"
+version = "9.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec2e3161de27091f18a831d9494e9c53378a34833af5c1dda35ad85849da18d6"
+checksum = "2886b00003a72c4ccee3f42cfc34908d33b2508a74d827dc2a4244706475c704"
 dependencies = [
 "aes 0.9.3",
 "bzip2",
@@ -14091,18 +14010,10 @@ dependencies = [
 [[package]]
 name = "zstd"
 version = "0.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e91ee311a569c327171651566e07972200e76fcfe2242a4fa446149a3881c08a"
 dependencies = [
- "apache-avro",
- "arrow-array",
- "arrow-ipc",
- "arrow-schema",
- "bytes",
- "kafka-protocol",
- "parquet",
- "semver",
- "toml",
- "zstd 0.14.3",
- "zstd-safe",
+ "zstd-safe 7.3.0",
 ]

 [[package]]
@@ -14111,7 +14022,16 @@ version = "0.14.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db3ae9bf90af6e40197bef767eeefc46ad6397420fe873830bd85e5fbbfb3c70"
 dependencies = [
- "zstd-safe",
+ "zstd-safe 8.2.0",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "7.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64d80649ab6db9d9f6f9c80a40becd948eda4714a0a5ac8c4d157a32231c7882"
+dependencies = [
+ "zstd-sys",
 ]

 [[package]]
@@ -14129,7 +14049,6 @@ version = "2.1.2+zstd.1.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "481ada9c543b2323cbb7bbdbb5249177fbf0188ed959ed2c15e4b22421c84ed3"
 dependencies = [
- "bindgen",
 "cc",
 "pkg-config",
 ]
@@ -66,7 +66,6 @@ members = [
    "crates/io-metrics", # I/O metrics collection for performance analysis
    "crates/io-core", # Buffered Bytes, mmap-then-copy, and aligned pread I/O helpers
    "crates/zip", # ZIP file handling and compression
-    "crates/zstd-compat", # Fixed codec for dependencies requiring zstd 0.13
 ]
 resolver = "3"

@@ -261,7 +260,7 @@ aws-smithy-http-client = { default-features = false, version = "1.5.1" }
 aws-smithy-runtime-api = { version = "1.19.1" }
 aws-smithy-types = { version = "1.9.0" }
 base64-simd = "0.8.0"
-brotli = "9.1.0"
+brotli = "9.0.0"
 clap = { version = "4.6.7" }
 const-str = { version = "1.1.0" }
 convert_case = "0.12.0"
@@ -303,7 +302,6 @@ num_cpus = { version = "1.17.0" }
 nvml-wrapper = "0.13.0"
 object = { version = "=0.40.0", default-features = false }
 parking_lot = "0.13.0"
-same-file = "1.0.6"
 path-absolutize = "4.0.1"
 percent-encoding = "2.3.2"
 # Server-side QR rendering for TOTP enrollment, so neither the console nor the
@@ -356,7 +354,7 @@ winapi-util = "0.1.11"
 windows = { version = "0.62.2" }
 windows-sys = "0.61.2"
 xxhash-rust = { version = "0.8.19" }
-zip = "9.1.2"
+zip = "9.1.0"
 zstd = "0.14.3"

 # Observability and Metrics
@@ -377,7 +375,7 @@ libunftp = { version = "0.23.1" }
 unftp-core = "0.1.0"
 suppaftp = { version = "12.2.1" }
 rcgen = { version = "0.14.10", default-features = false, features = ["aws_lc_rs", "crypto", "pem"] }
-russh = { version = "0.65.0" }
+russh = { version = "0.64.1" }
 russh-sftp = "3.0.1"

 # WebDAV
@@ -386,7 +384,7 @@ dav-server = "0.11.0"
 # Performance Analysis and Memory Profiling
 rustfs-mimalloc = { version = "0.7.2" }
 # Preserve Unicode focus filters until rustfs/backlog#2302 is resolved.
-hotpath = { version = "0.29.2", default-features = false }
+hotpath = { version = "0.29.1", default-features = false }
 # Snapshot testing for output format regression detection
 insta = { version = "1.49" }

@@ -426,7 +424,6 @@ strip = "none"

 # Pin upstream fixes until compatible crates.io releases are available.
 [patch.crates-io]
-zstd = { path = "crates/zstd-compat" }
 # Preserve RustFS OIDC flows while migrating the old elliptic-curve dependency chain.
 # Upstream: openidconnect-rs#244 and oauth2-rs#352.
 openidconnect = { git = "https://github.com/ramosbugs/openidconnect-rs", rev = "2f77ee73bc4554e1cb6279adb386005429fb4e41" }
@@ -141,7 +141,7 @@ chown -R 10001:10001 data logs
 docker run -d -p 9000:9000 -p 9001:9001 -v $(pwd)/data:/data -v $(pwd)/logs:/logs rustfs/rustfs:latest

 # Using specific version
-docker run -d -p 9000:9000 -p 9001:9001 -v $(pwd)/data:/data -v $(pwd)/logs:/logs rustfs/rustfs:1.0.4
+docker run -d -p 9000:9000 -p 9001:9001 -v $(pwd)/data:/data -v $(pwd)/logs:/logs rustfs/rustfs:1.0.3
 ```

 If you use [podman](https://github.com/containers/podman) instead of docker, you can install the RustFS with the below command
@@ -220,7 +220,7 @@ For developers who want to build RustFS Docker images from source with multi-arc
 ./docker-buildx.sh --push

 # Build specific version
-./docker-buildx.sh --release 1.0.4 --push
+./docker-buildx.sh --release 1.0.3 --push

 # Build for custom registry
 ./docker-buildx.sh --registry your-registry.com --namespace yourname --push
@@ -238,7 +238,7 @@ You can also use Make targets for convenience:
 ```bash
 make docker-buildx                    # Build locally
 make docker-buildx-push               # Build and push
-make docker-buildx-version VERSION=1.0.4  # Build specific version
+make docker-buildx-version VERSION=1.0.3  # Build specific version
 make help-docker                      # Show all Docker-related commands
 ```

@@ -138,7 +138,7 @@ chown -R 10001:10001 data logs
 docker run -d -p 9000:9000 -p 9001:9001 -v $(pwd)/data:/data -v $(pwd)/logs:/logs rustfs/rustfs:latest

 # 使用指定版本运行
-docker run -d -p 9000:9000 -p 9001:9001 -v $(pwd)/data:/data -v $(pwd)/logs:/logs rustfs/rustfs:1.0.4
+docker run -d -p 9000:9000 -p 9001:9001 -v $(pwd)/data:/data -v $(pwd)/logs:/logs rustfs/rustfs:1.0.3
 ```

 如果您通过绑定挂载启用 TLS 证书目录，也请用同样方式准备该目录：
@@ -176,7 +176,7 @@ docker compose -f docker-compose-simple.yml up -d
 ./docker-buildx.sh --push

 # 构建指定版本
-./docker-buildx.sh --release 1.0.4 --push
+./docker-buildx.sh --release 1.0.3 --push

 # 构建并推送到自定义仓库
 ./docker-buildx.sh --registry your-registry.com --namespace yourname --push
@@ -193,7 +193,7 @@ docker compose -f docker-compose-simple.yml up -d
 ```bash
 make docker-buildx                    # 本地构建
 make docker-buildx-push               # 构建并推送
-make docker-buildx-version VERSION=1.0.4  # 构建指定版本
+make docker-buildx-version VERSION=1.0.3  # 构建指定版本
 make help-docker                      # 显示所有 Docker 相关命令
 ```

@@ -197,10 +197,6 @@ pub const ENV_HEAL_MRF_REPLAY_BATCH: &str = "RUSTFS_HEAL_MRF_REPLAY_BATCH";
 /// Default behavior keeps the MRF intent pipeline enabled.
 pub const DEFAULT_HEAL_MRF_ENABLE: bool = true;

-/// Opt in to lifecycle V2 transitions after qualifying every reader and the rollback binary.
-pub const ENV_MRF_LIFECYCLE_V2_ENABLE: &str = "RUSTFS_MRF_LIFECYCLE_V2_ENABLE";
-pub const DEFAULT_MRF_LIFECYCLE_V2_ENABLE: bool = false;
-
 /// Default MRF queue capacity (matches MinIO's 100k MRF list ceiling).
 pub const DEFAULT_HEAL_MRF_QUEUE_SIZE: usize = 100_000;

@@ -146,7 +146,6 @@ zip.workspace = true
 clap = { workspace = true, features = ["derive", "env"] }

 [dev-dependencies]
-same-file.workspace = true
 aws-smithy-http-client = { workspace = true, default-features = false, features = ["test-util"] }
 rustfs-heal.workspace = true
 tempfile.workspace = true
@@ -200,8 +200,8 @@ python3 scripts/e2e_binary.py run --features e2e-test-hooks -- cargo nextest run
 python3 scripts/e2e_binary.py run --binary "$RUSTFS_E2E_STARTUP_CAS_BINARY" --features e2e-test-hooks -- cargo nextest run --profile e2e-full -p e2e_test
 python3 scripts/e2e_binary.py run --features e2e-test-hooks -- cargo nextest run --profile e2e-nightly -p e2e_test

-# Distributed 4-node 4-disk lane uses the fault-test hooks server; the
-# scanner_heal_topology_ fault cases fail closed without it.
+# Distributed 4-node 4-disk lane includes physical-worker fault injection and
+# scanner_heal_topology_ cases; both require the fault-test hooks server.
 # Upgrade cases require RUSTFS_UPGRADE_SOURCE_BINARY and fail closed without it.
 python3 scripts/e2e_binary.py build --bins --features e2e-test-hooks
 python3 scripts/e2e_binary.py run --features e2e-test-hooks -- cargo nextest run --profile e2e-distributed -p e2e_test
@@ -29,10 +29,6 @@
 //! 3. Starting with the default `rustfsadmin` credentials emits the
 //!    default-credentials startup warning (observable operator signal).

-// Keep inventory acceptance in the admin-auth PR smoke selection.
-#[cfg(test)]
-mod target_inventory_test;
-
 #[cfg(test)]
 mod tests {
    use crate::common::{RustFSTestEnvironment, init_logging, rustfs_binary_path};
@@ -1,205 +0,0 @@
-// Copyright 2026 RustFS Team
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! Exercise the target inventory through HTTP authentication and authorization.
-//! Handler-level tests separately control reconciliation locks and config faults.
-
-use crate::common::{
-    RustFSTestEnvironment, admin_create_user, admin_request, admin_request_with_session_token, build_test_sts_client,
-    init_logging, local_http_client,
-};
-use http::header::{AUTHORIZATION, HOST};
-use reqwest::StatusCode;
-use rustfs_signer::{constants::UNSIGNED_PAYLOAD, sign_v4};
-use s3s::Body;
-use serde_json::Value;
-use std::{error::Error, time::Duration};
-
-type TestResult = Result<(), Box<dyn Error + Send + Sync>>;
-
-const SECRET: &str = "inventory-acceptance-token";
-const LIMITED_KEY: &str = "inventory-limited";
-const LIMITED_SECRET: &str = "inventory-limited-secret";
-const PATHS: [&str; 5] = [
-    "/rustfs/admin/v3/target/list",
-    "/rustfs/admin/v3/audit/target/list",
-    "/rustfs/admin/v4/plugins/instances",
-    "/rustfs/admin/v4/plugins/instances/builtin:webhook:notify:acceptance",
-    "/rustfs/admin/v4/extensions/instances",
-];
-
-async fn duplicate_authorization(
-    env: &RustFSTestEnvironment,
-    path: &str,
-) -> Result<reqwest::Response, Box<dyn Error + Send + Sync>> {
-    let url = format!("{}{path}", env.url);
-    let uri: http::Uri = url.parse()?;
-    let authority = uri.authority().ok_or("inventory URL missing authority")?.to_string();
-    let request = http::Request::builder()
-        .method(http::Method::GET)
-        .uri(uri)
-        .header(HOST, authority)
-        .header("x-amz-content-sha256", UNSIGNED_PAYLOAD)
-        .body(Body::empty())?;
-    let signed = sign_v4(request, 0, &env.access_key, &env.secret_key, "", "us-east-1");
-    let mut headers = signed.headers().clone();
-    let authorization = headers.get(AUTHORIZATION).ok_or("signer omitted authorization")?.clone();
-    headers.append(AUTHORIZATION, authorization);
-    assert_eq!(headers.get_all(AUTHORIZATION).iter().count(), 2);
-    Ok(local_http_client().get(url).headers(headers).send().await?)
-}
-
-fn assert_unloaded_target(entry: &Value, path: &str) {
-    assert_eq!(entry["service"], "webhook", "{path}: unexpected target service");
-    assert!(
-        entry["account_id"]
-            .as_str()
-            .is_some_and(|id| id.eq_ignore_ascii_case("acceptance")),
-        "{path}: fixture target is missing"
-    );
-    assert_eq!(entry["status"], "offline", "{path}: unloaded targets must remain visible as offline");
-    if !path.contains("/extensions/") {
-        assert_eq!(entry["health_reason"], "not_loaded_in_runtime", "{path}: unexpected health reason");
-    }
-}
-
-#[tokio::test(flavor = "multi_thread")]
-async fn target_inventory_preserves_unloaded_targets_and_http_auth_boundaries() -> TestResult {
-    init_logging();
-    let mut env = RustFSTestEnvironment::new().await?;
-    // Enabled destinations remain configured while both delivery modules are
-    // disabled, so inventory reads must not require a loaded target runtime.
-    env.start_rustfs_server_with_env(
-        vec![],
-        &[
-            ("RUSTFS_NOTIFY_ENABLE", "false"),
-            ("RUSTFS_AUDIT_ENABLE", "false"),
-            ("RUSTFS_NOTIFY_WEBHOOK_ENABLE_ACCEPTANCE", "on"),
-            ("RUSTFS_NOTIFY_WEBHOOK_ENDPOINT_ACCEPTANCE", "http://127.0.0.1:9/hook"),
-            ("RUSTFS_NOTIFY_WEBHOOK_AUTH_TOKEN_ACCEPTANCE", SECRET),
-            ("RUSTFS_AUDIT_WEBHOOK_ENABLE_ACCEPTANCE", "on"),
-            ("RUSTFS_AUDIT_WEBHOOK_ENDPOINT_ACCEPTANCE", "http://127.0.0.1:9/hook"),
-            ("RUSTFS_AUDIT_WEBHOOK_AUTH_TOKEN_ACCEPTANCE", SECRET),
-        ],
-    )
-    .await?;
-    admin_create_user(&env, LIMITED_KEY, LIMITED_SECRET).await?;
-
-    tokio::time::timeout(Duration::from_secs(60), async {
-        let assumed = build_test_sts_client(&env.url, &env.access_key, &env.secret_key, None, "e2e-target-inventory")
-            .assume_role()
-            .role_arn("arn:aws:iam::123456789012:role/target-inventory")
-            .role_session_name("target-inventory-console-session")
-            .send()
-            .await?;
-        let temporary = assumed
-            .credentials()
-            .ok_or("AssumeRole should return temporary inventory credentials")?;
-        assert_ne!(
-            temporary.access_key_id(),
-            env.access_key,
-            "inventory must exercise a distinct session credential"
-        );
-        assert!(
-            !temporary.session_token().is_empty(),
-            "temporary inventory credentials must include a token"
-        );
-
-        for path in PATHS {
-            for (principal, access_key, secret_key, session_token) in [
-                ("root", env.access_key.as_str(), env.secret_key.as_str(), None),
-                (
-                    "temporary admin",
-                    temporary.access_key_id(),
-                    temporary.secret_access_key(),
-                    Some(temporary.session_token()),
-                ),
-            ] {
-                let (status, body) = admin_request_with_session_token(
-                    &env.url,
-                    http::Method::GET,
-                    path,
-                    None,
-                    access_key,
-                    secret_key,
-                    session_token,
-                )
-                .await?;
-                assert_eq!(status, StatusCode::OK, "{path}: signed {principal} inventory failed");
-                assert!(!body.contains(SECRET), "{path}: inventory exposed a target secret");
-                let value: Value = serde_json::from_str(&body)?;
-                let entries: Vec<&Value> = if path.ends_with("/target/list") {
-                    let field = if path.contains("/audit/") {
-                        "audit_endpoints"
-                    } else {
-                        "notification_endpoints"
-                    };
-                    value[field].as_array().ok_or("missing endpoint inventory")?.iter().collect()
-                } else if path.ends_with("/instances") {
-                    value["instances"]
-                        .as_array()
-                        .ok_or("missing instance inventory")?
-                        .iter()
-                        .collect()
-                } else {
-                    vec![&value]
-                };
-                let targets: Vec<_> = entries
-                    .into_iter()
-                    .filter(|entry| {
-                        entry["account_id"]
-                            .as_str()
-                            .is_some_and(|id| id.eq_ignore_ascii_case("acceptance"))
-                    })
-                    .collect();
-                let expected = if path.ends_with("/instances") { 2 } else { 1 };
-                assert_eq!(targets.len(), expected, "{path}: configured targets disappeared");
-                for entry in &targets {
-                    assert_unloaded_target(entry, path);
-                    if path.contains("/v4/") {
-                        assert_eq!(entry["config"]["auth_token"], "***redacted***", "{path}: missing secret redaction");
-                    }
-                }
-                if expected == 2 {
-                    for domain in ["notify", "audit"] {
-                        assert!(targets.iter().any(|entry| entry["domain"] == domain), "{path}: missing {domain} domain");
-                    }
-                }
-            }
-
-            let unsigned = local_http_client().get(format!("{}{path}", env.url)).send().await?;
-            assert_eq!(unsigned.status(), StatusCode::FORBIDDEN, "{path}: unsigned request was not denied");
-            let body = unsigned.text().await?;
-            assert!(body.contains("<Code>AccessDenied</Code>") && body.contains("Signature is required"));
-
-            let ambiguous = duplicate_authorization(&env, path).await?;
-            assert_eq!(
-                ambiguous.status(),
-                StatusCode::FORBIDDEN,
-                "{path}: duplicate authorization was not rejected"
-            );
-            let body = ambiguous.text().await?;
-            assert!(body.contains("<Code>AccessDenied</Code>") && body.contains("Signature is required"));
-
-            let (status, body) = admin_request(&env.url, http::Method::GET, path, None, LIMITED_KEY, LIMITED_SECRET).await?;
-            assert_eq!(status, StatusCode::FORBIDDEN, "{path}: principal without admin policy was not denied");
-            assert!(body.contains("<Code>AccessDenied</Code>"), "{path}: unexpected authorization error");
-            assert!(!body.contains("Signature is required") && !body.contains("SignatureDoesNotMatch"));
-        }
-        Ok::<(), Box<dyn Error + Send + Sync>>(())
-    })
-    .await??;
-    env.stop_server();
-    Ok(())
-}
@@ -20,14 +20,15 @@
 //! offline before heal converges, a strict latest-listing quorum of 3 can only
 //! ever observe 2 copies, so ListObjectsV2 silently dropped the object even
 //! though GetObject (read quorum 2) still succeeded. Exposed by the flaky
-//! "Mixed-version rolling upgrade from rc.2" CI lane (run 33478999853). The
-//! listing now follows MinIO's rule: an entry needs `ceil(asked/2)` copies
-//! among the online drives it asked, so three online drives need two copies
-//! (see `SetDisks::list_path` in `crates/ecstore/src/store/list_objects.rs`).
+//! "Mixed-version rolling upgrade from rc.2" CI lane (run 33478999853); the
+//! product fix relaxes the listing's required object quorum by the number of
+//! set drives the listing could not consult (see
+//! `latest_listing_required_object_quorum` in
+//! `crates/ecstore/src/store/list_objects.rs`).

 #[cfg(test)]
 mod tests {
-    use crate::common::{ClusterTopology, RustFSTestClusterEnvironment, init_logging};
+    use crate::common::{RustFSTestClusterEnvironment, init_logging};
    use aws_sdk_s3::Client;
    use bytes::Bytes;
    use std::collections::HashSet;
@@ -50,13 +51,13 @@ mod tests {
        format!("degraded-object-{idx:02}")
    }

-    async fn list_all_keys(client: &Client, bucket: &str) -> Result<HashSet<String>, Box<dyn Error + Send + Sync>> {
+    async fn list_all_keys(client: &Client) -> Result<HashSet<String>, Box<dyn Error + Send + Sync>> {
        let mut keys = HashSet::new();
        let mut continuation_token: Option<String> = None;
        loop {
            let response = client
                .list_objects_v2()
-                .bucket(bucket)
+                .bucket(BUCKET)
                .set_continuation_token(continuation_token.clone())
                .send()
                .await?;
@@ -146,7 +147,7 @@ mod tests {
        let expected: HashSet<String> = (0..OBJECT_COUNT).map(object_key).collect();
        let deadline = Instant::now() + LISTING_DEADLINE;
        let listed = loop {
-            let listed = match list_all_keys(&client, BUCKET).await {
+            let listed = match list_all_keys(&client).await {
                Ok(keys) => keys,
                Err(error) if Instant::now() < deadline => {
                    info!("retrying degraded listing: {error}");
@@ -170,97 +171,4 @@ mod tests {

        Ok(())
    }
-
-    /// 4-node x 4-drive cluster (one 16-drive set), #8828 shape:
-    /// 1. PUT objects while the storage class is EC:8, so each is 8+8.
-    /// 2. Restart with the EC:4 default, as after a storage-class change.
-    /// 3. Stop two nodes (8 drives). Each object keeps eight data shards, so
-    ///    GET succeeds and ListObjectsV2 must list every key: the listing
-    ///    quorum is half of the eight drives it can ask.
-    /// 4. Stop a third node. Four online drives are below the set's read
-    ///    quorum, so LIST must report 503 instead of a partial page.
-    #[tokio::test]
-    async fn ec8_objects_stay_listable_with_half_of_an_ec4_set_offline() -> TestResult {
-        const EC8_BUCKET: &str = "degraded-listing-ec8";
-        init_logging();
-
-        let mut cluster = RustFSTestClusterEnvironment::with_topology(ClusterTopology::single_pool_multidrive(4, 4)).await?;
-        cluster.set_env("RUSTFS_HEAL_ENABLED", "false");
-        cluster.set_env("RUSTFS_SCANNER_ENABLED", "false");
-        cluster.set_env("RUSTFS_STORAGE_CLASS_STANDARD", "EC:8");
-        cluster.start().await?;
-        cluster.create_test_bucket(EC8_BUCKET).await?;
-        let client = cluster.create_s3_client(0)?;
-        for idx in 0..OBJECT_COUNT {
-            let key = object_key(idx);
-            client
-                .put_object()
-                .bucket(EC8_BUCKET)
-                .key(&key)
-                .body(Bytes::from(format!("ec8 listing payload {idx}")).into())
-                .send()
-                .await
-                .map_err(|error| format!("EC:8 PUT for {key} failed: {error}"))?;
-        }
-
-        info!("restarting with the EC:4 default storage class");
-        cluster.stop();
-        // A later entry for the same variable wins when the node process starts.
-        cluster.set_env("RUSTFS_STORAGE_CLASS_STANDARD", "EC:4");
-        cluster.start().await?;
-        let client = cluster.create_s3_client(0)?;
-
-        info!("stopping nodes 2 and 3 (eight of sixteen drives)");
-        cluster.stop_node(2)?;
-        cluster.stop_node(3)?;
-        for idx in 0..OBJECT_COUNT {
-            let key = object_key(idx);
-            let deadline = Instant::now() + GET_RETRY_DEADLINE;
-            loop {
-                match client.get_object().bucket(EC8_BUCKET).key(&key).send().await {
-                    Ok(response) => {
-                        let body = response.body.collect().await?.into_bytes();
-                        assert_eq!(body.as_ref(), format!("ec8 listing payload {idx}").as_bytes());
-                        break;
-                    }
-                    Err(error) if Instant::now() < deadline => {
-                        info!("retrying EC:8 GET for {key}: {error}");
-                        tokio::time::sleep(Duration::from_millis(500)).await;
-                    }
-                    Err(error) => return Err(format!("EC:8 object {key} failed GET with eight drives: {error}").into()),
-                }
-            }
-        }
-
-        let expected: HashSet<String> = (0..OBJECT_COUNT).map(object_key).collect();
-        let deadline = Instant::now() + LISTING_DEADLINE;
-        loop {
-            match list_all_keys(&client, EC8_BUCKET).await {
-                Ok(listed) if listed == expected => break,
-                Ok(listed) => assert!(
-                    Instant::now() < deadline,
-                    "EC:8 objects readable with eight drives stayed missing from ListObjectsV2: listed={listed:?}"
-                ),
-                Err(error) => assert!(
-                    Instant::now() < deadline,
-                    "ListObjectsV2 kept failing with eight of sixteen drives online: {error}"
-                ),
-            }
-            tokio::time::sleep(Duration::from_millis(500)).await;
-        }
-
-        info!("stopping node 1 (four of sixteen drives remain)");
-        cluster.stop_node(1)?;
-        let deadline = Instant::now() + LISTING_DEADLINE;
-        loop {
-            match client.list_objects_v2().bucket(EC8_BUCKET).send().await {
-                Err(error) if error.raw_response().is_some_and(|response| response.status().as_u16() == 503) => break,
-                Err(error) => assert!(Instant::now() < deadline, "below the set read quorum LIST must report 503, got {error}"),
-                Ok(response) => panic!("below the set read quorum LIST must fail, but listed {} keys", response.contents().len()),
-            }
-            tokio::time::sleep(Duration::from_millis(500)).await;
-        }
-
-        Ok(())
-    }
 }
@@ -0,0 +1,378 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+#![cfg(unix)]
+
+use super::artifact_seal_test::{assert_exact_version, confirm_seal, create_artifact_attempt};
+use super::harness::{
+    DistCluster, DistLayout, TestResult, enable_versioning, payload_for, s3_probe_client, unique_bucket, wait_for_ready,
+};
+use crate::chaos::{VersionShardCensus, census_object_version_on_disk};
+use crate::common::init_logging;
+use aws_sdk_s3::error::ProvideErrorMetadata;
+use aws_sdk_s3::types::{Delete, ObjectIdentifier};
+use serde_json::json;
+use std::collections::{BTreeMap, BTreeSet};
+use std::os::unix::fs::MetadataExt;
+use std::path::{Path, PathBuf};
+use std::time::Duration;
+use tokio::time::timeout;
+
+const PUBLIC_INTERNAL_ERROR: &str = "We encountered an internal error, please try again.";
+
+#[derive(Debug, PartialEq, Eq)]
+pub(super) struct PhysicalEntry {
+    identity: (u64, u64),
+    changed: (i64, i64),
+    modified: (i64, i64),
+    bytes: Option<Vec<u8>>,
+}
+
+// Include directory identity/ctime as well as file bytes. Creating and removing
+// a temporary marker/rollback file cannot hide behind a restored final xl.meta.
+// Reads change atime, which is deliberately excluded.
+pub(super) fn physical_snapshot(dist: &DistCluster, bucket: &str) -> TestResult<BTreeMap<(usize, PathBuf), PhysicalEntry>> {
+    let mut snapshot = BTreeMap::new();
+    for (node, instance) in dist.cluster.nodes.iter().enumerate() {
+        let root = Path::new(&instance.data_dirs[0]).join(bucket);
+        for entry in walkdir::WalkDir::new(&root) {
+            let entry = entry?;
+            let metadata = std::fs::symlink_metadata(entry.path())?;
+            assert!(!metadata.file_type().is_symlink(), "unexpected fixture symlink");
+            snapshot.insert(
+                (node, entry.path().strip_prefix(&root)?.to_path_buf()),
+                PhysicalEntry {
+                    identity: (metadata.dev(), metadata.ino()),
+                    changed: (metadata.ctime(), metadata.ctime_nsec()),
+                    modified: (metadata.mtime(), metadata.mtime_nsec()),
+                    bytes: if metadata.is_dir() {
+                        None
+                    } else {
+                        Some(std::fs::read(entry.path())?)
+                    },
+                },
+            );
+        }
+    }
+    Ok(snapshot)
+}
+
+struct Version {
+    key: String,
+    id: String,
+    body: Vec<u8>,
+    manifests: Vec<VersionShardCensus>,
+}
+
+impl Version {
+    async fn put(dist: &DistCluster, bucket: &str, key: &str, seed: &str) -> TestResult<Self> {
+        let body = payload_for(seed, 2 * 1024 * 1024);
+        let output = timeout(
+            Duration::from_secs(30),
+            dist.client(1)?
+                .put_object()
+                .bucket(bucket)
+                .key(key)
+                .body(body.clone().into())
+                .send(),
+        )
+        .await??;
+        let id = output.version_id().ok_or("fixture PUT omitted version ID")?.to_owned();
+        let manifests = dist
+            .cluster
+            .nodes
+            .iter()
+            .map(|node| census_object_version_on_disk(Path::new(&node.data_dirs[0]), bucket, key, Some(&id)))
+            .collect::<TestResult<Vec<_>>>()?;
+        assert!(
+            manifests
+                .iter()
+                .all(|manifest| manifest.is_complete() && !manifest.expected_part_numbers.is_empty())
+        );
+        Ok(Self {
+            key: key.to_owned(),
+            id,
+            body,
+            manifests,
+        })
+    }
+}
+
+fn target(key: &str, version: Option<&str>) -> TestResult<ObjectIdentifier> {
+    Ok(ObjectIdentifier::builder()
+        .key(key)
+        .set_version_id(version.map(str::to_owned))
+        .build()?)
+}
+
+async fn assert_fixture(
+    dist: &DistCluster,
+    bucket: &str,
+    prefix: &str,
+    versions: &[Version],
+    marker: (&str, &str),
+) -> TestResult {
+    let expected: BTreeSet<_> = versions
+        .iter()
+        .map(|version| (version.key.clone(), version.id.clone()))
+        .collect();
+    for node in 0..dist.cluster.nodes.len() {
+        let client = dist.client(node)?;
+        let listed = timeout(
+            Duration::from_secs(30),
+            client.list_object_versions().bucket(bucket).prefix(prefix).send(),
+        )
+        .await??;
+        let actual: BTreeSet<_> = listed
+            .versions()
+            .iter()
+            .map(|version| {
+                (
+                    version.key().unwrap_or_default().to_owned(),
+                    version.version_id().unwrap_or_default().to_owned(),
+                )
+            })
+            .collect();
+        assert_eq!(listed.versions().len(), versions.len());
+        assert_eq!(actual, expected, "delete changed exact data versions on node {node}");
+        assert_eq!(listed.delete_markers().len(), 1);
+        assert_eq!(listed.delete_markers()[0].key(), Some(marker.0));
+        assert_eq!(listed.delete_markers()[0].version_id(), Some(marker.1));
+        assert_eq!(listed.delete_markers()[0].is_latest(), Some(true));
+        for version in versions {
+            assert_exact_version(&client, bucket, &version.key, &version.id, &version.body).await?;
+            let disk = Path::new(&dist.cluster.nodes[node].data_dirs[0]);
+            assert!(
+                census_object_version_on_disk(disk, bucket, &version.key, Some(&version.id))?
+                    .matches_manifest(&version.manifests[node])
+            );
+        }
+    }
+    Ok(())
+}
+
+async fn assert_single_denied(dist: &DistCluster, node: usize, bucket: &str, key: &str, version: Option<&str>) -> TestResult {
+    let before = physical_snapshot(dist, bucket)?;
+    // One attempt: a later retry must not conceal a first local mutation.
+    let client = s3_probe_client(&dist.client(node)?);
+    let error = timeout(
+        Duration::from_secs(30),
+        client
+            .delete_object()
+            .bucket(bucket)
+            .key(key)
+            .set_version_id(version.map(str::to_owned))
+            .send(),
+    )
+    .await?
+    .expect_err("ordinary deletion succeeded in a managed bucket");
+    let service = error
+        .as_service_error()
+        .ok_or("delete failed without an S3 service rejection")?;
+    assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(500));
+    assert_eq!(service.code(), Some("InternalError"));
+    assert_eq!(service.message(), Some(PUBLIC_INTERNAL_ERROR));
+    assert!(
+        physical_snapshot(dist, bucket)? == before,
+        "first delete through node {node} wrote or rolled back managed data"
+    );
+    Ok(())
+}
+
+async fn assert_batch_denied(dist: &DistCluster, node: usize, bucket: &str, objects: &[ObjectIdentifier]) -> TestResult {
+    let before = physical_snapshot(dist, bucket)?;
+    let client = s3_probe_client(&dist.client(node)?);
+    let response = timeout(
+        Duration::from_secs(30),
+        client
+            .delete_objects()
+            .bucket(bucket)
+            .delete(Delete::builder().set_objects(Some(objects.to_vec())).quiet(false).build()?)
+            .send(),
+    )
+    .await??;
+    assert!(response.deleted().is_empty(), "managed batch reported a successful delete");
+    assert_eq!(response.errors().len(), objects.len(), "batch must reject every requested occurrence");
+    for (error, requested) in response.errors().iter().zip(objects) {
+        assert_eq!(error.key(), Some(requested.key()));
+        assert_eq!(error.version_id(), requested.version_id());
+        assert_eq!(error.code(), Some("InternalError"));
+        assert_eq!(error.message(), Some(PUBLIC_INTERNAL_ERROR));
+    }
+    assert!(
+        physical_snapshot(dist, bucket)? == before,
+        "first batch through node {node} wrote or rolled back managed data"
+    );
+    Ok(())
+}
+
+fn copy_existing_object(source: &Path, destination: &Path) -> TestResult {
+    assert!(!destination.exists());
+    for entry in walkdir::WalkDir::new(source) {
+        let entry = entry?;
+        let target = destination.join(entry.path().strip_prefix(source)?);
+        if entry.file_type().is_dir() {
+            std::fs::create_dir_all(&target)?;
+        } else {
+            assert!(entry.file_type().is_file());
+            std::fs::copy(entry.path(), target)?;
+        }
+    }
+    Ok(())
+}
+
+async fn ordinary_delete_control(dist: &DistCluster, bucket: &str) -> TestResult {
+    let client = s3_probe_client(&dist.client(0)?);
+    let key = "ordinary-observer-control.bin";
+    let version = Version::put(dist, bucket, key, key).await?;
+    let before = physical_snapshot(dist, bucket)?;
+    let deleted = client.delete_object().bucket(bucket).key(key).send().await?;
+    assert_eq!(deleted.delete_marker(), Some(true));
+    let marker = deleted.version_id().ok_or("ordinary delete omitted marker ID")?;
+    assert!(
+        physical_snapshot(dist, bucket)? != before,
+        "physical observer missed real marker creation"
+    );
+    client
+        .delete_object()
+        .bucket(bucket)
+        .key(key)
+        .version_id(marker)
+        .send()
+        .await?;
+    // The logical version inventory is restored, but ctime/identity still
+    // expose the two writes. This checks the observer used by managed negatives.
+    let listed = client.list_object_versions().bucket(bucket).prefix(key).send().await?;
+    assert_eq!(listed.versions().len(), 1);
+    assert_eq!(listed.versions()[0].version_id(), Some(version.id.as_str()));
+    assert!(listed.delete_markers().is_empty());
+    assert!(
+        physical_snapshot(dist, bucket)? != before,
+        "marker round-trip hid transient physical writes"
+    );
+    assert_exact_version(&client, bucket, key, &version.id, &version.body).await?;
+    client
+        .delete_object()
+        .bucket(bucket)
+        .key(key)
+        .version_id(&version.id)
+        .send()
+        .await?;
+    assert!(
+        client
+            .list_object_versions()
+            .bucket(bucket)
+            .prefix(key)
+            .send()
+            .await?
+            .versions()
+            .is_empty()
+    );
+
+    let current = Version::put(dist, bucket, "ordinary-batch-current.bin", "current").await?;
+    let exact = Version::put(dist, bucket, "ordinary-batch-exact.bin", "exact").await?;
+    let response = client
+        .delete_objects()
+        .bucket(bucket)
+        .delete(
+            Delete::builder()
+                .objects(target(&current.key, None)?)
+                .objects(target(&exact.key, Some(&exact.id))?)
+                .objects(target(&exact.key, Some(&exact.id))?)
+                .build()?,
+        )
+        .send()
+        .await?;
+    assert!(response.errors().is_empty());
+    assert_eq!(response.deleted().len(), 3);
+    let listed = client
+        .list_object_versions()
+        .bucket(bucket)
+        .prefix(&current.key)
+        .send()
+        .await?;
+    assert_eq!(listed.versions().len(), 1);
+    assert_eq!(listed.delete_markers().len(), 1);
+    assert!(
+        client
+            .list_object_versions()
+            .bucket(bucket)
+            .prefix(&exact.key)
+            .send()
+            .await?
+            .versions()
+            .is_empty()
+    );
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_delete_entrypoints_preserve_versions_and_physical_state() -> TestResult {
+    init_logging();
+    let mut dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let (identity, admin) = create_artifact_attempt(&dist).await?;
+    let bucket = identity["bucket"]
+        .as_str()
+        .ok_or("managed receipt omitted bucket")?
+        .to_owned();
+    let prefix = identity["attempt_prefix"]
+        .as_str()
+        .ok_or("managed receipt omitted prefix")?
+        .to_owned();
+    let key = format!("{prefix}native.bin");
+    let mut versions = vec![
+        Version::put(&dist, &bucket, &key, "native-old").await?,
+        Version::put(&dist, &bucket, &key, "native-new").await?,
+    ];
+    let ordinary = unique_bucket("delete-control");
+    dist.create_bucket(&ordinary).await?;
+    enable_versioning(&dist.client(0)?, &ordinary).await?;
+
+    // A new managed bucket cannot legitimately create a marker. Model existing
+    // persisted state from before adoption/upgrade using a real S3-generated
+    // ordinary object+marker, copied disk-for-disk in the same erasure set.
+    // Only this object's files move; bucket authority/configuration is untouched.
+    let marker_key = format!("{prefix}existing-marker.bin");
+    versions.push(Version::put(&dist, &ordinary, &marker_key, "existing-data").await?);
+    let output = dist
+        .client(2)?
+        .delete_object()
+        .bucket(&ordinary)
+        .key(&marker_key)
+        .send()
+        .await?;
+    assert_eq!(output.delete_marker(), Some(true));
+    let marker = output.version_id().ok_or("ordinary fixture omitted marker ID")?.to_owned();
+    dist.cluster.stop();
+    for node in &dist.cluster.nodes {
+        let disk = Path::new(&node.data_dirs[0]);
+        copy_existing_object(&disk.join(&ordinary).join(&marker_key), &disk.join(&bucket).join(&marker_key))?;
+    }
+    dist.cluster.start().await?;
+    wait_for_ready(&dist.cluster).await?;
+    assert_fixture(&dist, &bucket, &prefix, &versions, (&marker_key, &marker)).await?;
+    ordinary_delete_control(&dist, &ordinary).await?;
+    let batch = vec![
+        target(&key, None)?,
+        target(&key, Some(&versions[0].id))?,
+        target(&key, Some(&versions[1].id))?,
+        target(&marker_key, Some(&marker))?,
+        target(&key, Some(&versions[0].id))?,
+        target(&marker_key, Some(&versions[2].id))?,
+    ];
+    for phase in ["open", "sealed", "restarted"] {
+        if phase == "sealed" {
+            confirm_seal(&dist, &admin, &json!({"version": 1, "target": identity}).to_string(), &identity).await?;
+        } else if phase == "restarted" {
+            dist.restart_with_current_binary().await?;
+        }
+        for node in 0..dist.cluster.nodes.len() {
+            assert_single_denied(&dist, node, &bucket, &key, None).await?;
+            assert_single_denied(&dist, node, &bucket, &key, Some(&versions[0].id)).await?;
+            assert_single_denied(&dist, node, &bucket, &marker_key, Some(&marker)).await?;
+            assert_batch_denied(&dist, node, &bucket, &batch).await?;
+        }
+        assert_fixture(&dist, &bucket, &prefix, &versions, (&marker_key, &marker)).await?;
+    }
+    Ok(())
+}
@@ -0,0 +1,434 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+#![cfg(unix)]
+
+use super::artifact_delete_test::physical_snapshot;
+use super::artifact_seal_test::{ArtifactAdmin, create_artifact_attempt};
+use super::harness::{DistCluster, DistLayout, TestResult, wait_for_ready};
+use crate::common::{
+    AdminTransport, admin_add_canned_policy_via, admin_attach_user_policy_via, admin_create_user_via, init_logging,
+    signed_s3_request,
+};
+use futures::{StreamExt as _, TryStreamExt as _};
+use http::{Method, StatusCode};
+use serde::Deserialize;
+use serde_json::{Value, json};
+use std::{collections::BTreeSet, time::Duration};
+use tokio::time::timeout;
+use uuid::Uuid;
+
+const ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/inventory";
+const BUDGET: Duration = Duration::from_secs(45);
+
+struct Reader {
+    access: String,
+    secret: String,
+}
+
+impl Reader {
+    async fn create(dist: &DistCluster, target: &Value, action: &str) -> TestResult<Self> {
+        let reader = Self {
+            access: format!("inventory{}", &Uuid::new_v4().simple().to_string()[..12]),
+            secret: Uuid::new_v4().simple().to_string(),
+        };
+        let policy_name = format!("inventory{}", &Uuid::new_v4().simple().to_string()[..12]);
+        let bucket = target["bucket"].as_str().ok_or("target bucket")?;
+        let prefix = target["attempt_prefix"]
+            .as_str()
+            .ok_or("target prefix")?
+            .trim_end_matches('/');
+        let resource = if action == "s3:ListBucket" {
+            format!("arn:aws:s3:::{bucket}")
+        } else {
+            format!("arn:aws:s3:::{bucket}/{prefix}")
+        };
+        let policy =
+            json!({"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":action,"Resource":resource}]}).to_string();
+        let url = &dist.cluster.nodes[0].url;
+        let access = &dist.cluster.access_key;
+        let secret = &dist.cluster.secret_key;
+        admin_create_user_via(AdminTransport::Signed, url, access, secret, &reader.access, &reader.secret).await?;
+        admin_add_canned_policy_via(AdminTransport::Signed, url, access, secret, &policy_name, &policy).await?;
+        admin_attach_user_policy_via(AdminTransport::Signed, url, access, secret, &policy_name, &reader.access).await?;
+        Ok(reader)
+    }
+
+    async fn request(&self, dist: &DistCluster, target: &Value, invocation: Uuid) -> TestResult<reqwest::Response> {
+        timeout(
+            BUDGET,
+            signed_s3_request(
+                Method::POST,
+                &format!("{}{ROUTE}", dist.cluster.nodes[0].url),
+                Some(json!({"version":1,"invocation_id":invocation,"target":target}).to_string()),
+                Some("application/json"),
+                &self.access,
+                &self.secret,
+            ),
+        )
+        .await?
+    }
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(deny_unknown_fields)]
+struct Frame {
+    version: u32,
+    invocation_id: Uuid,
+    target: Value,
+    sequence: u64,
+    payload: Payload,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(tag = "type", rename_all = "snake_case", deny_unknown_fields)]
+enum Payload {
+    Observation {
+        disk_id: Uuid,
+        key: String,
+        version_id: Uuid,
+        delete_marker: bool,
+    },
+    Complete {
+        members: usize,
+        observations: u64,
+    },
+}
+
+async fn read_frames(mut response: reqwest::Response) -> TestResult<(Vec<Frame>, bool)> {
+    let mut pending = Vec::new();
+    let mut frames = Vec::new();
+    let mut clean = true;
+    loop {
+        match timeout(BUDGET, response.chunk()).await? {
+            Ok(Some(chunk)) => {
+                pending.extend_from_slice(&chunk);
+                while let Some(end) = pending.iter().position(|byte| *byte == b'\n') {
+                    assert!(end < 1024 * 1024, "HTTP inventory line exceeds encoded bound");
+                    let line: Vec<_> = pending.drain(..=end).collect();
+                    frames.push(serde_json::from_slice(&line[..end])?);
+                }
+                assert!(pending.len() < 1024 * 1024, "unbounded incomplete HTTP line");
+            }
+            Ok(None) => break,
+            Err(_) => {
+                clean = false;
+                break;
+            }
+        }
+    }
+    Ok((frames, clean && pending.is_empty()))
+}
+
+async fn seal(dist: &DistCluster, user: &ArtifactAdmin, target: &Value) -> TestResult {
+    let (status, body) = user
+        .request(
+            dist,
+            0,
+            "/rustfs/admin/v3/plugin-artifacts/seal-writes",
+            json!({"version":1,"target":target}).to_string(),
+        )
+        .await?;
+    assert_eq!(status, StatusCode::OK, "actual all-member closure: {body}");
+    assert_eq!(serde_json::from_str::<Value>(&body)?["all_writes_sealed"], true);
+    Ok(())
+}
+
+fn exact_inventory(frames: &[Frame], target: &Value, invocation: Uuid, versions: &BTreeSet<(String, Uuid, bool)>) {
+    let mut observed = BTreeSet::new();
+    let mut disks = BTreeSet::new();
+    let mut count = 0u64;
+    for (sequence, frame) in frames.iter().enumerate() {
+        assert_eq!(frame.version, 1);
+        assert_eq!(frame.invocation_id, invocation);
+        assert_eq!(&frame.target, target);
+        assert_eq!(frame.sequence, u64::try_from(sequence).expect("bounded fixture sequence"));
+        match &frame.payload {
+            Payload::Observation {
+                disk_id,
+                key,
+                version_id,
+                delete_marker,
+            } => {
+                assert!(!disk_id.is_nil() && !version_id.is_nil());
+                assert!(
+                    observed.insert((*disk_id, key.clone(), *version_id, *delete_marker)),
+                    "duplicate physical observation"
+                );
+                disks.insert(*disk_id);
+                count += 1;
+            }
+            Payload::Complete { members, observations } => {
+                assert_eq!(sequence + 1, frames.len(), "Complete must be the last HTTP frame");
+                assert_eq!(*members, 4);
+                assert_eq!(*observations, count);
+            }
+        }
+    }
+    assert!(
+        matches!(frames.last().map(|frame| &frame.payload), Some(Payload::Complete { .. })),
+        "A03I3A_HTTP_COMPLETE"
+    );
+    if !versions.is_empty() {
+        assert_eq!(disks.len(), 4);
+    }
+    for disk in disks {
+        let actual: BTreeSet<_> = observed
+            .iter()
+            .filter(|(id, ..)| *id == disk)
+            .map(|(_, key, version, marker)| (key.clone(), *version, *marker))
+            .collect();
+        assert_eq!(&actual, versions, "A03I3A_EXACT_VERSIONS");
+    }
+    assert_eq!(observed.len(), versions.len() * 4);
+}
+
+#[tokio::test]
+async fn artifact_inventory_http_exact_versions() -> TestResult {
+    crate::common::rustfs_binary_path_with_features(Some("e2e-test-hooks"));
+    init_logging();
+    let dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let (target, admin) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("prefix")?;
+    let mut versions = BTreeSet::new();
+    for (name, body) in [
+        ("same", b"first".to_vec()),
+        ("same", b"second".to_vec()),
+        ("zero", Vec::new()),
+    ] {
+        let key = format!("{prefix}{name}");
+        let output = timeout(BUDGET, dist.client(1)?.put_object().bucket(bucket).key(&key).body(body.into()).send()).await??;
+        let version = Uuid::parse_str(output.version_id().ok_or("actual PUT version")?)?;
+        versions.insert((key, version, false));
+    }
+    seal(&dist, &admin, &target).await?;
+    // A wildcard action is still restricted to this exact attempt resource.
+    // The separate authority case exercises the dedicated action alone.
+    let reader = Reader::create(&dist, &target, "admin:*").await?;
+    let before = physical_snapshot(&dist, bucket)?;
+    let invocation = Uuid::new_v4();
+    let response = reader.request(&dist, &target, invocation).await?;
+    assert_eq!(response.status(), StatusCode::OK, "A03I3A_HTTP_ROUTE");
+    assert_eq!(
+        response.headers().get("content-type").and_then(|value| value.to_str().ok()),
+        Some("application/x-ndjson")
+    );
+    let (frames, clean) = read_frames(response).await?;
+    assert!(clean, "Complete requires clean HTTP EOF");
+    assert!(frames.len() > 2, "real multi-frame HTTP body");
+    exact_inventory(&frames, &target, invocation, &versions);
+    assert!(
+        before == physical_snapshot(&dist, bucket)?,
+        "inventory mutated physical artifact namespace"
+    );
+    let (empty, empty_admin) = create_artifact_attempt(&dist).await?;
+    seal(&dist, &empty_admin, &empty).await?;
+    let empty_reader = Reader::create(&dist, &empty, "admin:*").await?;
+    let invocation = Uuid::new_v4();
+    let response = empty_reader.request(&dist, &empty, invocation).await?;
+    assert_eq!(response.status(), StatusCode::OK);
+    let (frames, clean) = read_frames(response).await?;
+    assert!(clean);
+    exact_inventory(&frames, &empty, invocation, &BTreeSet::new());
+    Ok(())
+}
+
+#[tokio::test]
+async fn artifact_inventory_http_scoped_authority() -> TestResult {
+    crate::common::rustfs_binary_path_with_features(Some("e2e-test-hooks"));
+    init_logging();
+    let dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let (target, admin) = create_artifact_attempt(&dist).await?;
+    seal(&dist, &admin, &target).await?;
+    let reader = Reader::create(&dist, &target, "admin:InventoryPluginArtifactAttempt").await?;
+    let invocation = Uuid::new_v4();
+    let response = reader.request(&dist, &target, invocation).await?;
+    assert_eq!(response.status(), StatusCode::OK, "dedicated inventory authority");
+    let (frames, clean) = read_frames(response).await?;
+    assert!(clean);
+    exact_inventory(&frames, &target, invocation, &BTreeSet::new());
+    let mut other_prefix = target.clone();
+    other_prefix["attempt_prefix"] = json!(format!("outputs/6169/{}/{}/", Uuid::new_v4(), Uuid::new_v4()));
+    let mut other_bucket = target.clone();
+    other_bucket["bucket"] = json!("another-artifact-bucket");
+    for denied in [&other_prefix, &other_bucket] {
+        assert_eq!(
+            reader.request(&dist, denied, Uuid::new_v4()).await?.status(),
+            StatusCode::FORBIDDEN,
+            "A03I3A_SCOPED_AUTHORITY"
+        );
+    }
+    let (status, _) = admin
+        .request(
+            &dist,
+            0,
+            ROUTE,
+            json!({"version":1,"invocation_id":Uuid::new_v4(),"target":target}).to_string(),
+        )
+        .await?;
+    assert_eq!(status, StatusCode::FORBIDDEN, "A03I3A_SCOPED_AUTHORITY seal-only user");
+    let listed = Reader::create(&dist, &target, "s3:ListBucket").await?;
+    dist.client_with_credentials(0, &listed.access, &listed.secret)?
+        .list_objects_v2()
+        .bucket(target["bucket"].as_str().ok_or("bucket")?)
+        .send()
+        .await?;
+    assert_eq!(
+        listed.request(&dist, &target, Uuid::new_v4()).await?.status(),
+        StatusCode::FORBIDDEN,
+        "A03I3A_SCOPED_AUTHORITY S3 list-only user"
+    );
+    let root_response = signed_s3_request(
+        Method::POST,
+        &format!("{}{ROUTE}", dist.cluster.nodes[0].url),
+        Some(json!({"version":1,"invocation_id":Uuid::new_v4(),"target":target}).to_string()),
+        Some("application/json"),
+        &dist.cluster.access_key,
+        &dist.cluster.secret_key,
+    )
+    .await?;
+    assert_eq!(root_response.status(), StatusCode::FORBIDDEN, "original scoped user required");
+    for body in [
+        json!({"version":1,"invocation_id":Uuid::nil(),"target":target}),
+        json!({"version":1,"invocation_id":Uuid::new_v4(),"target":target,"extra":true}),
+    ] {
+        let response = signed_s3_request(
+            Method::POST,
+            &format!("{}{ROUTE}", dist.cluster.nodes[0].url),
+            Some(body.to_string()),
+            Some("application/json"),
+            &reader.access,
+            &reader.secret,
+        )
+        .await?;
+        assert_eq!(response.status(), StatusCode::BAD_REQUEST, "strict inventory request");
+    }
+    Ok(())
+}
+
+async fn assert_incomplete(response: reqwest::Response) -> TestResult<Vec<Frame>> {
+    assert_eq!(
+        response.status(),
+        StatusCode::OK,
+        "valid request must exercise the streaming failure boundary"
+    );
+    let (frames, _) = read_frames(response).await?;
+    assert!(
+        !frames.iter().any(|frame| matches!(frame.payload, Payload::Complete { .. })),
+        "A03I3A_NO_FALSE_COMPLETE"
+    );
+    Ok(frames)
+}
+
+#[tokio::test]
+async fn artifact_inventory_http_incomplete_has_no_terminal() -> TestResult {
+    crate::common::rustfs_binary_path_with_features(Some("e2e-test-hooks"));
+    init_logging();
+    let mut dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let (target, admin) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("prefix")?;
+    // Real PUTs produce more data than a stalled HTTP/2 flow-control window.
+    futures::stream::iter(0..256)
+        .map(|index| {
+            let client = dist.client(1);
+            let key = format!("{prefix}slow/{index:04}/{}/{}", "a".repeat(190), "b".repeat(190));
+            async move {
+                let output = client?
+                    .put_object()
+                    .bucket(bucket)
+                    .key(key)
+                    .body(vec![1].into())
+                    .send()
+                    .await?;
+                assert!(!Uuid::parse_str(output.version_id().ok_or("actual PUT version")?)?.is_nil());
+                Ok::<_, Box<dyn std::error::Error + Send + Sync>>(())
+            }
+        })
+        .buffer_unordered(8)
+        .try_collect::<Vec<_>>()
+        .await?;
+    seal(&dist, &admin, &target).await?;
+    let reader = Reader::create(&dist, &target, "admin:InventoryPluginArtifactAttempt").await?;
+    dist.cluster.stop_node(3)?;
+    assert_incomplete(reader.request(&dist, &target, Uuid::new_v4()).await?).await?;
+    dist.cluster.start_node(3).await?;
+    wait_for_ready(&dist.cluster).await?;
+    let mut wrong = target.clone();
+    wrong["bucket_incarnation"] = json!(Uuid::new_v4());
+    assert_incomplete(reader.request(&dist, &wrong, Uuid::new_v4()).await?).await?;
+    // The configured endpoint map is ordered. Damage its final receiver, so
+    // earlier real observations are emitted before the physical scan fails.
+    let node = dist
+        .cluster
+        .nodes
+        .iter()
+        .max_by_key(|node| format!("{}{}", node.url, node.data_dirs[0]))
+        .ok_or("configured members")?;
+    let metadata = std::path::Path::new(&node.data_dirs[0])
+        .join(bucket)
+        .join(format!("{prefix}slow/0000/{}/{}", "a".repeat(190), "b".repeat(190)))
+        .join("xl.meta");
+    let original = std::fs::read(&metadata)?;
+    std::fs::write(&metadata, b"corrupt inventory metadata")?;
+    let before = physical_snapshot(&dist, bucket)?;
+    let outcome = assert_incomplete(reader.request(&dist, &target, Uuid::new_v4()).await?).await;
+    let after = physical_snapshot(&dist, bucket)?;
+    std::fs::write(&metadata, original)?;
+    let frames = outcome?;
+    assert!(before == after, "failed inventory repaired or mutated a physical object");
+    assert!(
+        frames
+            .iter()
+            .any(|frame| matches!(frame.payload, Payload::Observation { .. })),
+        "late physical failure must follow real HTTP observations"
+    );
+    let client = reqwest::Client::builder()
+        .no_proxy()
+        .http2_prior_knowledge()
+        .http2_initial_stream_window_size(1)
+        .http2_initial_connection_window_size(1)
+        .http2_adaptive_window(false)
+        .build()?;
+    let url = format!("{}{ROUTE}", dist.cluster.nodes[0].url);
+    let request = |invocation| {
+        json!({"version":1,"invocation_id":invocation,"target":target})
+            .to_string()
+            .into_bytes()
+    };
+    let response = crate::common::signed_request_with_client(
+        &client,
+        Method::POST,
+        &url,
+        &reader.access,
+        &reader.secret,
+        Some(request(Uuid::new_v4())),
+        Some("application/json"),
+    )
+    .await?;
+    assert_eq!(response.status(), StatusCode::OK);
+    // Do not poll the body: its one-byte HTTP/2 receive window stalls transport.
+    // This waits beyond the fixed30s service budget, not for readiness.
+    tokio::time::sleep(Duration::from_secs(35)).await;
+    assert_incomplete(response).await?;
+    let response = crate::common::signed_request_with_client(
+        &client,
+        Method::POST,
+        &url,
+        &reader.access,
+        &reader.secret,
+        Some(request(Uuid::new_v4())),
+        Some("application/json"),
+    )
+    .await?;
+    assert_eq!(response.status(), StatusCode::OK);
+    drop(response);
+    let response = timeout(Duration::from_secs(10), reader.request(&dist, &target, Uuid::new_v4())).await??;
+    let (frames, clean) = timeout(Duration::from_secs(10), read_frames(response)).await??;
+    assert!(
+        clean && matches!(frames.last().map(|frame| &frame.payload), Some(Payload::Complete { .. })),
+        "fresh scan must succeed promptly after an actual disconnected HTTP body"
+    );
+    Ok(())
+}
@@ -0,0 +1,269 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+use super::artifact_repair_tail_test::PhysicalBarrier;
+use super::artifact_seal_test::{assert_exact_version, confirm_seal, create_artifact_attempt};
+use super::harness::{DistCluster, DistLayout, TestResult, payload_for, wait_until};
+use crate::chaos::census_object_version_on_disk;
+use crate::common::init_logging;
+use crate::storage_api::artifact_rpc::{
+    DiskError, TONIC_RPC_PREFIX, gen_tonic_signature_headers, set_tonic_canonical_body_digest,
+};
+use http::StatusCode;
+use rustfs_filemeta::FileMeta;
+use rustfs_protos::proto_gen::node_service::{RenameDataRequest, node_service_client::NodeServiceClient};
+use serde_json::{Value, json};
+use std::collections::BTreeMap;
+use std::path::{Path, PathBuf};
+use std::time::Duration;
+use tokio::time::timeout;
+use tonic::Request;
+use uuid::Uuid;
+
+const PUT_SEAL_ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/seal-attempt";
+
+fn signed_put_request(body: RenameDataRequest, audience: &str) -> TestResult<Request<RenameDataRequest>> {
+    let canonical = rustfs_protos::canonical_artifact_rename_data_request_body(&body)?;
+    let mut request = Request::new(body);
+    request.set_timeout(Duration::from_secs(15));
+    set_tonic_canonical_body_digest(&mut request, &canonical)?;
+    let digest = request
+        .metadata()
+        .get("x-rustfs-content-sha256")
+        .ok_or("missing canonical digest")?
+        .to_str()?
+        .to_owned();
+    request.metadata_mut().as_mut().extend(gen_tonic_signature_headers(
+        audience,
+        TONIC_RPC_PREFIX.trim_start_matches('/'),
+        "ArtifactRenameData",
+        Some(&digest),
+    )?);
+    Ok(request)
+}
+
+fn publication_snapshot(paths: &[&Path]) -> TestResult<BTreeMap<PathBuf, Option<Vec<u8>>>> {
+    let mut snapshot = BTreeMap::new();
+    for root in paths {
+        for entry in walkdir::WalkDir::new(root) {
+            let entry = entry?;
+            let contents = if entry.file_type().is_dir() {
+                None
+            } else {
+                Some(std::fs::read(entry.path())?)
+            };
+            snapshot.insert(entry.path().to_path_buf(), contents);
+        }
+    }
+    Ok(snapshot)
+}
+
+async fn assert_raw_put_closed(body: &RenameDataRequest, url: &str, audience: &str, paths: &[&Path]) -> TestResult {
+    let before = publication_snapshot(paths)?;
+    // Re-sign the exact original request; replay protection is not the rejection.
+    let request = signed_put_request(body.clone(), audience)?;
+    let response = timeout(Duration::from_secs(20), async {
+        let mut client = NodeServiceClient::connect(url.to_owned()).await?;
+        Ok::<_, Box<dyn std::error::Error + Send + Sync>>(client.artifact_rename_data(request).await?.into_inner())
+    })
+    .await??;
+    assert!(!response.success, "sealed attempt admitted another ordinary PUT");
+    let error = response.error.ok_or("rejected raw PUT omitted error")?;
+    assert_eq!(error.code, DiskError::Io(std::io::ErrorKind::PermissionDenied.into()).to_u32());
+    assert_eq!(error.error_info, "io error artifact attempt mutation domain is closed");
+    assert_eq!(publication_snapshot(paths)?, before, "rejected raw PUT mutated staged or published files");
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_put_seal_waits_for_disconnected_physical_tail() -> TestResult {
+    crate::common::rustfs_binary_path_with_features(Some("e2e-test-hooks"));
+    init_logging();
+    let _ = rustfs_credentials::set_global_rpc_secret("rustfs-internode-signature-e2e-secret".to_owned());
+    let rpc_secret = rustfs_credentials::try_get_rpc_token()?;
+    let dist = DistCluster::start_with_env(DistLayout::FourNodeFourDisk, &[("RUSTFS_RPC_SECRET", &rpc_secret)]).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("target omitted bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("target omitted prefix")?;
+    let key = format!("{prefix}detached-put.bin");
+    let payload = payload_for(&key, 2 * 1024 * 1024);
+    let output = timeout(
+        Duration::from_secs(30),
+        dist.client(1)?
+            .put_object()
+            .bucket(bucket)
+            .key(&key)
+            .body(payload.clone().into())
+            .send(),
+    )
+    .await??;
+    let version = output.version_id().ok_or("managed PUT omitted version ID")?;
+    let request_body = json!({"version": 1, "target": target}).to_string();
+    let baselines = dist
+        .cluster
+        .nodes
+        .iter()
+        .map(|node| census_object_version_on_disk(Path::new(&node.data_dirs[0]), bucket, &key, Some(version)))
+        .collect::<TestResult<Vec<_>>>()?;
+    assert!(
+        baselines
+            .iter()
+            .all(|baseline| baseline.is_complete() && !baseline.expected_part_numbers.is_empty())
+    );
+
+    let node = &dist.cluster.nodes[3];
+    let disk = PathBuf::from(&node.data_dirs[0]).canonicalize()?;
+    let object = disk.join(bucket).join(&key);
+    let metadata_bytes = std::fs::read(object.join("xl.meta"))?;
+    let fi = FileMeta::load(&metadata_bytes)?.into_fileinfo(bucket, &key, version, true, false, true)?;
+    let admitted_file_info = serde_json::to_value(&fi)?;
+    assert!(!fi.is_healing(), "ordinary publication must not carry the repair marker");
+    let data_dir = fi
+        .data_dir
+        .ok_or("physical-tail fixture requires external shards")?
+        .to_string();
+    let source = Uuid::new_v4().to_string();
+    let staging = disk.join(".rustfs.sys/tmp").join(&source);
+    std::fs::create_dir_all(&staging)?;
+    let destination = object.join(&data_dir);
+    // Replay the receiver publication of a real ordinary PUT while its attempt
+    // remains open. Preserve its referenced version metadata. The admitted
+    // owned operation may still finish metadata publication after RPC detach.
+    std::fs::rename(&destination, staging.join(&data_dir))?;
+    let barrier = PhysicalBarrier::arm(&disk, &destination)?;
+    let format: Value = serde_json::from_slice(&std::fs::read(disk.join(".rustfs.sys/format.json"))?)?;
+    let disk_id = Uuid::parse_str(format["xl"]["this"].as_str().ok_or("disk format omitted xl.this")?)?;
+    let incarnation = Uuid::parse_str(target["bucket_incarnation"].as_str().ok_or("target omitted incarnation")?)?;
+    let put = RenameDataRequest {
+        disk: disk_id.to_string(),
+        src_volume: ".rustfs.sys/tmp".to_owned(),
+        src_path: source,
+        dst_volume: bucket.to_owned(),
+        dst_path: key.clone(),
+        file_info: serde_json::to_string(&fi)?,
+        file_info_bin: Default::default(),
+        scanner_publication_lease_token: Default::default(),
+        bucket_incarnation_id: incarnation.as_bytes().to_vec().into(),
+    };
+    let request = signed_put_request(put.clone(), &node.address)?;
+    // Direct RPC takes no coordinator attempt lock and owns its own connection.
+    let url = node.url.clone();
+    let mut rpc = tokio::spawn(async move {
+        timeout(Duration::from_secs(30), async move {
+            let mut client = NodeServiceClient::connect(url).await?;
+            Ok::<_, Box<dyn std::error::Error + Send + Sync>>(client.artifact_rename_data(request).await?)
+        })
+        .await
+    });
+    tokio::select! {
+        result = &mut rpc => {
+            let response = result???.into_inner();
+            panic!(
+                "ordinary PUT receiver completed before the physical barrier: success={}, error={:?}",
+                response.success, response.error
+            );
+        }
+        arrived = barrier.observed("arrived") => arrived?,
+    }
+    assert!(!destination.exists(), "physical PUT escaped its barrier");
+    rpc.abort();
+    assert!(rpc.await.expect_err("disconnect the ordinary PUT waiter").is_cancelled());
+    // The ordinary PUT wrapper retains an owned task. Observe its RPC-facing
+    // waiter dropping, rather than cancellation of the continuing disk task.
+    barrier.observed("rpc-waiter-dropped").await?;
+
+    let seal = user.request(&dist, 0, PUT_SEAL_ROUTE, request_body.clone());
+    tokio::pin!(seal);
+    let closed = wait_until(
+        Duration::from_secs(15),
+        || async {
+            Ok(walkdir::WalkDir::new(disk.join(".rustfs-artifact-put-seals"))
+                .min_depth(2)
+                .max_depth(2)
+                .into_iter()
+                .filter_map(Result::ok)
+                .any(|entry| entry.file_name() == "closed"))
+        },
+        "PUT receiver persisted closing before physical drain",
+    );
+    tokio::pin!(closed);
+    tokio::select! {
+        result = &mut seal => {
+            let (status, response) = result?;
+            panic!("PUT seal returned before its blocked receiver closed admission: {status} {response}");
+        }
+        result = &mut closed => result?,
+    }
+    let (status, response) = timeout(Duration::from_secs(40), &mut seal).await??;
+    assert_eq!(
+        status,
+        StatusCode::SERVICE_UNAVAILABLE,
+        "PUT seal confirmed an unfinished physical tail: {response}"
+    );
+    assert!(response.contains("artifact operation unconfirmed"));
+    assert!(!destination.exists());
+    assert_raw_put_closed(&put, &node.url, &node.address, &[&staging, &object]).await?;
+    assert!(!destination.exists(), "a second admission published while the worker was paused");
+
+    barrier.release()?;
+    wait_until(
+        Duration::from_secs(15),
+        || async { Ok(destination.join("part.1").is_file()) },
+        "detached ordinary PUT worker finished",
+    )
+    .await?;
+    confirm_seal(&dist, &user, &request_body, &target).await?;
+    // Seal confirmation is the boundary: already admitted work may re-encode
+    // metadata before this point, but the complete FileInfo must be unchanged.
+    let published_objects: Vec<_> = dist
+        .cluster
+        .nodes
+        .iter()
+        .map(|node| PathBuf::from(&node.data_dirs[0]).join(bucket).join(&key))
+        .collect();
+    let published_paths: Vec<_> = published_objects.iter().map(PathBuf::as_path).collect();
+    let sealed_snapshot = publication_snapshot(&published_paths)?;
+    let sealed_file_info =
+        FileMeta::load(&std::fs::read(object.join("xl.meta"))?)?.into_fileinfo(bucket, &key, version, true, false, true)?;
+    assert_eq!(
+        serde_json::to_value(sealed_file_info)?,
+        admitted_file_info,
+        "admitted PUT changed FileInfo semantics"
+    );
+    for (index, baseline) in baselines.iter().enumerate() {
+        assert!(
+            census_object_version_on_disk(Path::new(&dist.cluster.nodes[index].data_dirs[0]), bucket, &key, Some(version))?
+                .matches_manifest(baseline)
+        );
+        assert_exact_version(&dist.client(index)?, bucket, &key, version, &payload).await?;
+    }
+
+    // Stage the exact request again. A source metadata sentinel makes a missing
+    // admission check observable even if the existing destination later causes
+    // ENOTEMPTY: ordinary rename rewrites source metadata before that syscall.
+    let staged_data = staging.join(&data_dir);
+    std::fs::create_dir_all(&staged_data)?;
+    for entry in std::fs::read_dir(&destination)? {
+        let entry = entry?;
+        assert!(entry.file_type()?.is_file(), "unexpected nested shard fixture");
+        std::fs::copy(entry.path(), staged_data.join(entry.file_name()))?;
+    }
+    std::fs::write(staging.join("xl.meta"), b"closed-admission-must-preserve-this-staged-metadata")?;
+    assert_raw_put_closed(&put, &node.url, &node.address, &[&staging, &object]).await?;
+    let listed = dist
+        .client(0)?
+        .list_object_versions()
+        .bucket(bucket)
+        .prefix(&key)
+        .send()
+        .await?;
+    assert_eq!(listed.versions().len(), 1, "raw PUT retries created another version");
+    assert_eq!(listed.versions()[0].version_id(), Some(version));
+    assert!(listed.delete_markers().is_empty());
+    confirm_seal(&dist, &user, &request_body, &target).await?;
+    assert!(
+        publication_snapshot(&published_paths)? == sealed_snapshot,
+        "published files changed after the first successful physical-drain confirmation"
+    );
+    Ok(())
+}
@@ -0,0 +1,218 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+use super::artifact_seal_test::{assert_exact_version, confirm_seal, create_artifact_attempt};
+use super::harness::{DistCluster, DistLayout, TestResult, payload_for, wait_until};
+use crate::chaos::census_object_version_on_disk;
+use crate::common::init_logging;
+use crate::storage_api::artifact_rpc::{TONIC_RPC_PREFIX, gen_tonic_signature_headers, set_tonic_canonical_body_digest};
+use http::StatusCode;
+use rustfs_filemeta::FileMeta;
+use rustfs_protos::proto_gen::node_service::{
+    ArtifactRepairRenameDataRequest, RenameDataRequest, node_service_client::NodeServiceClient,
+};
+use serde_json::{Value, json};
+use std::path::{Path, PathBuf};
+use std::time::Duration;
+use tokio::time::timeout;
+use tonic::Request;
+use uuid::Uuid;
+
+const REPAIR_SEAL_ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/seal-repairs";
+
+pub(super) struct PhysicalBarrier(PathBuf);
+
+impl PhysicalBarrier {
+    pub(super) fn arm(disk: &Path, destination: &Path) -> TestResult<Self> {
+        let path = disk.join(".rustfs.sys/e2e-physical-rename-barrier");
+        std::fs::write(&path, destination.to_str().ok_or("non-UTF8 fixture destination")?)?;
+        Ok(Self(path))
+    }
+
+    pub(super) async fn observed(&self, stage: &str) -> TestResult {
+        wait_until(Duration::from_secs(15), || async { Ok(self.0.with_extension(stage).is_file()) }, stage).await
+    }
+
+    pub(super) fn release(&self) -> TestResult {
+        std::fs::write(self.0.with_extension("release"), b"release physical worker")?;
+        Ok(())
+    }
+}
+
+impl Drop for PhysicalBarrier {
+    fn drop(&mut self) {
+        // Release even on assertion failure; the worker also has its own deadline.
+        let _ = self.release();
+        let _ = std::fs::remove_file(&self.0);
+    }
+}
+
+#[tokio::test]
+async fn four_node_artifact_repair_seal_waits_for_disconnected_physical_tail() -> TestResult {
+    crate::common::rustfs_binary_path_with_features(Some("e2e-test-hooks"));
+    init_logging();
+    // Match the other raw internode signature tests sharing the OnceLock.
+    let _ = rustfs_credentials::set_global_rpc_secret("rustfs-internode-signature-e2e-secret".to_owned());
+    let rpc_secret = rustfs_credentials::try_get_rpc_token()?;
+    let dist = DistCluster::start_with_env(DistLayout::FourNodeFourDisk, &[("RUSTFS_RPC_SECRET", &rpc_secret)]).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("target omitted bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("target omitted prefix")?;
+    let key = format!("{prefix}detached-rename.bin");
+    let body = payload_for(&key, 2 * 1024 * 1024);
+    let output = timeout(
+        Duration::from_secs(30),
+        dist.client(1)?
+            .put_object()
+            .bucket(bucket)
+            .key(&key)
+            .body(body.clone().into())
+            .send(),
+    )
+    .await??;
+    let version = output.version_id().ok_or("managed PUT omitted version ID")?;
+    let request_body = json!({"version": 1, "target": target}).to_string();
+    confirm_seal(&dist, &user, &request_body, &target).await?;
+
+    let node = &dist.cluster.nodes[3];
+    let disk = PathBuf::from(&node.data_dirs[0]).canonicalize()?;
+    let object = disk.join(bucket).join(&key);
+    let metadata = FileMeta::load(&std::fs::read(object.join("xl.meta"))?)?;
+    let mut fi = metadata.into_fileinfo(bucket, &key, version, true, false, true)?;
+    fi.set_healing();
+    let data_dir = fi
+        .data_dir
+        .ok_or("physical-tail fixture requires external shard files")?
+        .to_string();
+    let baseline = census_object_version_on_disk(&disk, bucket, &key, Some(version))?;
+    assert!(baseline.is_complete() && !baseline.expected_part_numbers.is_empty());
+    let source = Uuid::new_v4().to_string();
+    let staging = disk.join(".rustfs.sys/tmp").join(&source);
+    std::fs::create_dir_all(&staging)?;
+    let destination = object.join(&data_dir);
+    std::fs::rename(&destination, staging.join(&data_dir))?;
+    let barrier = PhysicalBarrier::arm(&disk, &destination)?;
+    let format: Value = serde_json::from_slice(&std::fs::read(disk.join(".rustfs.sys/format.json"))?)?;
+    let disk_id = Uuid::parse_str(format["xl"]["this"].as_str().ok_or("disk format omitted xl.this")?)?;
+    let incarnation = Uuid::parse_str(target["bucket_incarnation"].as_str().ok_or("target omitted incarnation")?)?;
+    let repair = ArtifactRepairRenameDataRequest {
+        rename: Some(RenameDataRequest {
+            disk: disk_id.to_string(),
+            src_volume: ".rustfs.sys/tmp".to_owned(),
+            src_path: source,
+            dst_volume: bucket.to_owned(),
+            dst_path: key.clone(),
+            file_info: serde_json::to_string(&fi)?,
+            file_info_bin: Default::default(),
+            scanner_publication_lease_token: Default::default(),
+            bucket_incarnation_id: incarnation.as_bytes().to_vec().into(),
+        }),
+        expected_disk_id: disk_id.as_bytes().to_vec().into(),
+    };
+    let canonical = rustfs_protos::canonical_artifact_repair_rename_data_request_body(&repair)?;
+    let mut request = Request::new(repair);
+    request.set_timeout(Duration::from_secs(15));
+    set_tonic_canonical_body_digest(&mut request, &canonical)?;
+    let digest = request
+        .metadata()
+        .get("x-rustfs-content-sha256")
+        .ok_or("missing canonical digest")?
+        .to_str()?
+        .to_owned();
+    let headers = gen_tonic_signature_headers(
+        &node.address,
+        TONIC_RPC_PREFIX.trim_start_matches('/'),
+        "ArtifactRepairRenameData",
+        Some(&digest),
+    )?;
+    request.metadata_mut().as_mut().extend(headers);
+    // An independent channel and direct receiver RPC take no coordinator attempt
+    // lock. Dropping this task closes the client stream while rename is paused.
+    let url = node.url.clone();
+    let mut rpc = tokio::spawn(async move {
+        timeout(Duration::from_secs(30), async move {
+            let mut client = NodeServiceClient::connect(url).await?;
+            client
+                .artifact_repair_rename_data(request)
+                .await
+                .map_err(|error| -> Box<dyn std::error::Error + Send + Sync> { Box::new(error) })
+        })
+        .await
+    });
+    tokio::select! {
+        result = &mut rpc => {
+            let response = result???.into_inner();
+            panic!(
+                "repair receiver completed before the physical barrier: success={}, error={:?}",
+                response.success, response.error
+            );
+        }
+        arrived = barrier.observed("arrived") => arrived?,
+    }
+    assert!(!destination.exists(), "physical publication ran before its barrier");
+    rpc.abort();
+    assert!(rpc.await.expect_err("cancel the disconnected RPC waiter").is_cancelled());
+    // This acknowledgement is emitted by the receiver's dropped async waiter,
+    // not by the client and not by a delayed response.
+    barrier.observed("waiter-dropped").await?;
+
+    let seal = user.request(&dist, 0, REPAIR_SEAL_ROUTE, request_body.clone());
+    tokio::pin!(seal);
+    let closed = wait_until(
+        Duration::from_secs(15),
+        || async {
+            Ok(walkdir::WalkDir::new(disk.join(".rustfs-artifact-repair-seals"))
+                .min_depth(2)
+                .max_depth(2)
+                .into_iter()
+                .filter_map(Result::ok)
+                .any(|entry| entry.file_name() == "closed"))
+        },
+        "receiver persisted repair closure while its physical worker remains paused",
+    );
+    tokio::pin!(closed);
+    tokio::select! {
+        result = &mut seal => {
+            let (status, response) = result?;
+            panic!("repair seal returned before the blocked receiver closed admission: {status} {response}");
+        }
+        result = &mut closed => result?,
+    }
+    // Cover a complete receiver drain timeout, so early physical-owner release
+    // causes a successful response here and fails this runtime assertion.
+    let (status, response) = timeout(Duration::from_secs(40), &mut seal).await??;
+    assert_eq!(
+        status,
+        StatusCode::SERVICE_UNAVAILABLE,
+        "seal confirmed an unfinished physical tail: {response}"
+    );
+    assert!(response.contains("artifact operation unconfirmed"));
+    assert!(!destination.exists(), "worker escaped the physical barrier");
+    barrier.release()?;
+    wait_until(
+        Duration::from_secs(15),
+        || async { Ok(destination.join("part.1").is_file()) },
+        "detached physical rename completes after release",
+    )
+    .await?;
+    wait_until(
+        Duration::from_secs(45),
+        || async {
+            let (status, response) = user.request(&dist, 0, REPAIR_SEAL_ROUTE, request_body.clone()).await?;
+            if status == StatusCode::SERVICE_UNAVAILABLE && response.contains("artifact operation unconfirmed") {
+                return Ok(false);
+            }
+            assert_eq!(status, StatusCode::OK, "repair seal did not confirm after physical drain: {response}");
+            assert_eq!(
+                serde_json::from_str::<Value>(&response)?,
+                json!({"version": 1, "target": target, "attempt_repairs_sealed": true})
+            );
+            Ok(true)
+        },
+        "exact retry confirms all four receivers after physical drain",
+    )
+    .await?;
+    assert!(census_object_version_on_disk(&disk, bucket, &key, Some(version))?.matches_manifest(&baseline));
+    assert_exact_version(&dist.client(0)?, bucket, &key, version, &body).await?;
+    Ok(())
+}
@@ -0,0 +1,327 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+use super::artifact_seal_test::{ArtifactAdmin, assert_exact_version, confirm_seal, create_artifact_attempt};
+use super::harness::{
+    DistCluster, DistLayout, TestResult, enable_versioning, payload_for, unique_bucket, wait_for_ready, wait_until,
+};
+use crate::chaos::{VersionShardCensus, census_object_version_on_disk, signed_admin_post, start_root_heal_when_control_ready};
+use crate::common::init_logging;
+use http::StatusCode;
+use serde_json::{Value, json};
+use std::path::{Path, PathBuf};
+use std::time::Duration;
+use tokio::time::timeout;
+
+const REPAIR_SEAL_ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/seal-repairs";
+const HEAL_BODY: &str =
+    r#"{"recursive":true,"dryRun":false,"remove":false,"recreate":true,"scanMode":2,"updateParity":false,"nolock":false}"#;
+const HEAL_BUDGET: Duration = Duration::from_secs(120);
+
+pub(super) struct RepairObject {
+    pub(super) key: String,
+    pub(super) version: String,
+    pub(super) body: Vec<u8>,
+    manifests: Vec<VersionShardCensus>,
+}
+
+fn roots(dist: &DistCluster) -> Vec<PathBuf> {
+    dist.cluster
+        .nodes
+        .iter()
+        .map(|node| PathBuf::from(&node.data_dirs[0]))
+        .collect()
+}
+
+impl RepairObject {
+    pub(super) async fn put(dist: &DistCluster, bucket: &str, key: String) -> TestResult<Self> {
+        let body = payload_for(&key, 2 * 1024 * 1024);
+        let output = timeout(
+            Duration::from_secs(30),
+            dist.client(1)?
+                .put_object()
+                .bucket(bucket)
+                .key(&key)
+                .body(body.clone().into())
+                .send(),
+        )
+        .await??;
+        let version = output.version_id().ok_or("managed PUT omitted version ID")?.to_owned();
+        let manifests = roots(dist)
+            .iter()
+            .map(|disk| census_object_version_on_disk(disk, bucket, &key, Some(&version)))
+            .collect::<TestResult<Vec<_>>>()?;
+        for manifest in &manifests {
+            assert!(manifest.is_complete(), "repair needs a complete baseline: {manifest:?}");
+            assert!(!manifest.expected_part_numbers.is_empty(), "repair must use actual shard files");
+        }
+        Ok(Self {
+            key,
+            version,
+            body,
+            manifests,
+        })
+    }
+
+    pub(super) fn part(&self, disk: &Path, bucket: &str, node: usize) -> TestResult<PathBuf> {
+        let data_dir = self.manifests[node]
+            .data_dir
+            .as_ref()
+            .ok_or("external shard omitted data directory")?;
+        Ok(disk.join(bucket).join(&self.key).join(data_dir).join("part.1"))
+    }
+
+    pub(super) async fn assert_repaired(&self, dist: &DistCluster, bucket: &str) -> TestResult {
+        wait_until(
+            HEAL_BUDGET,
+            || async {
+                for (disk, baseline) in roots(dist).iter().zip(&self.manifests) {
+                    if !census_object_version_on_disk(disk, bucket, &self.key, Some(&self.version))?.matches_manifest(baseline) {
+                        return Ok(false);
+                    }
+                }
+                Ok(true)
+            },
+            "every configured receiver restored the exact version and original shard fingerprints",
+        )
+        .await?;
+        for node in 0..dist.cluster.nodes.len() {
+            assert_exact_version(&dist.client(node)?, bucket, &self.key, &self.version, &self.body).await?;
+        }
+        Ok(())
+    }
+}
+
+pub(super) async fn start_heal(dist: &DistCluster, bucket: &str, prefix: &str, remove: bool) -> TestResult<String> {
+    let url = format!("{}/rustfs/admin/v3/heal/{bucket}/{prefix}?forceStart=true", dist.cluster.nodes[0].url);
+    let body = if remove {
+        HEAL_BODY.replace("\"remove\":false", "\"remove\":true")
+    } else {
+        HEAL_BODY.to_owned()
+    };
+    let response = timeout(
+        HEAL_BUDGET,
+        start_root_heal_when_control_ready(&url, &body, &dist.cluster.access_key, &dist.cluster.secret_key),
+    )
+    .await??;
+    let response: Value = serde_json::from_str(&response)?;
+    Ok(response["clientToken"]
+        .as_str()
+        .ok_or("heal omitted its task token")?
+        .to_owned())
+}
+
+pub(super) async fn finish_heal(dist: &DistCluster, token: &str, rejected_key: Option<&str>) -> TestResult {
+    let url = format!("{}/rustfs/admin/v3/heal/?clientToken={token}", dist.cluster.nodes[0].url);
+    wait_until(
+        HEAL_BUDGET,
+        || async {
+            let response = signed_admin_post(&url, None, &dist.cluster.access_key, &dist.cluster.secret_key).await?;
+            let status: Value = serde_json::from_str(&response)?;
+            if status["summary"] == "running" {
+                return Ok(false);
+            }
+            if let Some(key) = rejected_key {
+                assert_eq!(status["summary"], "stopped", "closed repair must report failure: {status}");
+                assert!(
+                    status["outcome"]["counters"]["failed"]
+                        .as_u64()
+                        .is_some_and(|count| count > 0)
+                );
+                assert!(
+                    status["outcome"]["objects"].as_array().is_some_and(|objects| objects
+                        .iter()
+                        .any(|object| { object["identity"]["object"] == key && object["disposition"]["state"] == "failed" })),
+                    "heal must actually attempt the rejected object: {status}"
+                );
+            } else {
+                assert_eq!(status["summary"], "finished", "heal did not complete: {status}");
+            }
+            Ok(true)
+        },
+        "exact admin heal task reached its expected terminal outcome",
+    )
+    .await
+}
+
+async fn repair_seal(dist: &DistCluster, user: &ArtifactAdmin, target: &Value, confirmed: bool) -> TestResult {
+    wait_until(
+        Duration::from_secs(45),
+        || async {
+            let request = json!({"version": 1, "target": target}).to_string();
+            let (status, body) = user.request(dist, 0, REPAIR_SEAL_ROUTE, request).await?;
+            if !confirmed {
+                assert_eq!(status, StatusCode::SERVICE_UNAVAILABLE, "offline receiver repair seal: {body}");
+                assert!(body.contains("<Code>ServiceUnavailable</Code>"));
+                assert!(body.contains("artifact operation unconfirmed"));
+                return Ok(true);
+            }
+            if status == StatusCode::SERVICE_UNAVAILABLE
+                && body.contains("<Code>ServiceUnavailable</Code>")
+                && body.contains("<Message>artifact operation unconfirmed; retry the same identity</Message>")
+            {
+                return Ok(false);
+            }
+            assert_eq!(status, StatusCode::OK, "repair seal failed: {body}");
+            assert_eq!(
+                serde_json::from_str::<Value>(&body)?,
+                json!({"version": 1, "target": target, "attempt_repairs_sealed": true})
+            );
+            Ok(true)
+        },
+        "repair seal confirms every configured receiver",
+    )
+    .await
+}
+
+#[tokio::test]
+async fn four_node_artifact_shard_and_minority_metadata_repair_after_put_seal() -> TestResult {
+    init_logging();
+    // Sub-quorum metadata recovery supports genuine legacy shards only.
+    let mut dist =
+        DistCluster::start_with_env(DistLayout::FourNodeFourDisk, &[("RUSTFS_SHARD_INTEGRITY_WRITE", "false")]).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("target omitted bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("target omitted prefix")?;
+    let shard = RepairObject::put(&dist, bucket, format!("{prefix}shard.bin")).await?;
+    let metadata = RepairObject::put(&dist, bucket, format!("{prefix}metadata.bin")).await?;
+    let later = dist
+        .client(2)?
+        .put_object()
+        .bucket(bucket)
+        .key(&shard.key)
+        .body(b"newer-version".to_vec().into())
+        .send()
+        .await?;
+    let later_version = later.version_id().ok_or("second PUT omitted version ID")?.to_owned();
+    assert_ne!(shard.version, later_version);
+    confirm_seal(&dist, &user, &json!({"version": 1, "target": target}).to_string(), &target).await?;
+
+    dist.cluster.stop();
+    let disks = roots(&dist);
+    std::fs::remove_file(shard.part(&disks[3], bucket, 3)?)?;
+    for disk in &disks[1..] {
+        std::fs::remove_file(disk.join(bucket).join(&metadata.key).join("xl.meta"))?;
+    }
+    assert!(!census_object_version_on_disk(&disks[3], bucket, &shard.key, Some(&shard.version))?.is_complete());
+    assert!(disks[0].join(bucket).join(&metadata.key).join("xl.meta").is_file());
+    assert!(
+        disks[1..]
+            .iter()
+            .all(|disk| !disk.join(bucket).join(&metadata.key).join("xl.meta").exists())
+    );
+    dist.cluster.start().await?;
+    wait_for_ready(&dist.cluster).await?;
+    let token = start_heal(&dist, bucket, prefix, false).await?;
+    shard.assert_repaired(&dist, bucket).await?;
+    metadata.assert_repaired(&dist, bucket).await?;
+    finish_heal(&dist, &token, None).await?;
+    assert_exact_version(&dist.client(3)?, bucket, &shard.key, &later_version, b"newer-version").await?;
+    let listed = dist
+        .client(0)?
+        .list_object_versions()
+        .bucket(bucket)
+        .prefix(prefix)
+        .send()
+        .await?;
+    assert_eq!(listed.versions().len(), 3, "repair must not publish replacement versions");
+    assert!(listed.delete_markers().is_empty());
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_repair_seal_denies_shard_and_metadata_repair_after_restart() -> TestResult {
+    init_logging();
+    let mut dist =
+        DistCluster::start_with_env(DistLayout::FourNodeFourDisk, &[("RUSTFS_SHARD_INTEGRITY_WRITE", "false")]).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("target omitted bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("target omitted prefix")?;
+    let shard = RepairObject::put(&dist, bucket, format!("{prefix}shard.bin")).await?;
+    let metadata = RepairObject::put(&dist, bucket, format!("{prefix}metadata.bin")).await?;
+    confirm_seal(&dist, &user, &json!({"version": 1, "target": target}).to_string(), &target).await?;
+    repair_seal(&dist, &user, &target, true).await?;
+    let ordinary_bucket = unique_bucket("repair-control");
+    dist.create_bucket(&ordinary_bucket).await?;
+    enable_versioning(&dist.client(0)?, &ordinary_bucket).await?;
+    let ordinary = RepairObject::put(&dist, &ordinary_bucket, "ordinary.bin".to_owned()).await?;
+    let disks = roots(&dist);
+    let part = shard.part(&disks[3], bucket, 3)?;
+    std::fs::remove_file(&part)?;
+    for disk in &disks[1..] {
+        std::fs::remove_file(disk.join(bucket).join(&metadata.key).join("xl.meta"))?;
+    }
+    for restarted in [false, true] {
+        if restarted {
+            dist.restart_with_current_binary().await?;
+        }
+        // The same receivers must still execute an ordinary bucket repair.
+        std::fs::remove_file(ordinary.part(&disks[3], &ordinary_bucket, 3)?)?;
+        let control = start_heal(&dist, &ordinary_bucket, &ordinary.key, false).await?;
+        ordinary.assert_repaired(&dist, &ordinary_bucket).await?;
+        finish_heal(&dist, &control, None).await?;
+        for object in [&shard, &metadata] {
+            let token = start_heal(&dist, bucket, &object.key, false).await?;
+            finish_heal(&dist, &token, Some(&object.key)).await?;
+        }
+        assert!(!part.exists(), "sealed repair recreated the missing shard");
+        assert!(
+            disks[1..]
+                .iter()
+                .all(|disk| !disk.join(bucket).join(&metadata.key).join("xl.meta").exists())
+        );
+        assert_exact_version(&dist.client(2)?, bucket, &shard.key, &shard.version, &shard.body).await?;
+    }
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_repair_seal_requires_every_receiver_on_exact_retry() -> TestResult {
+    init_logging();
+    let mut dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let request = json!({"version": 1, "target": target}).to_string();
+    confirm_seal(&dist, &user, &request, &target).await?;
+    // Repeat after global confirmation: its persisted receipt cannot replace a
+    // fresh acknowledgement from an offline configured receiver.
+    for _ in 0..2 {
+        dist.cluster.stop_node(3)?;
+        repair_seal(&dist, &user, &target, false).await?;
+        dist.cluster.start_node(3).await?;
+        wait_for_ready(&dist.cluster).await?;
+        repair_seal(&dist, &user, &target, true).await?;
+    }
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_dangling_repair_preserves_surviving_metadata() -> TestResult {
+    init_logging();
+    let mut dist =
+        DistCluster::start_with_env(DistLayout::FourNodeFourDisk, &[("RUSTFS_SHARD_INTEGRITY_WRITE", "false")]).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("target omitted bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("target omitted prefix")?;
+    let object = RepairObject::put(&dist, bucket, format!("{prefix}dangling.bin")).await?;
+    confirm_seal(&dist, &user, &json!({"version": 1, "target": target}).to_string(), &target).await?;
+    dist.cluster.stop();
+    let disks = roots(&dist);
+    let survivor = disks[0].join(bucket).join(&object.key).join("xl.meta");
+    let before = std::fs::read(&survivor)?;
+    for (node, disk) in disks.iter().enumerate() {
+        std::fs::remove_file(object.part(disk, bucket, node)?)?;
+        if node != 0 {
+            std::fs::remove_file(disk.join(bucket).join(&object.key).join("xl.meta"))?;
+        }
+    }
+    dist.cluster.start().await?;
+    wait_for_ready(&dist.cluster).await?;
+    let token = start_heal(&dist, bucket, &object.key, true).await?;
+    finish_heal(&dist, &token, Some(&object.key)).await?;
+    assert_eq!(
+        std::fs::read(survivor)?,
+        before,
+        "distributed repair must not authorize managed dangling deletion"
+    );
+    Ok(())
+}
@@ -0,0 +1,347 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+use super::harness::{
+    DistCluster, DistLayout, TestResult, assert_object_bytes, put_object, s3_probe_client, unique_bucket, wait_for_ready,
+    wait_until,
+};
+use crate::common::{
+    AdminTransport, admin_add_canned_policy_via, admin_attach_user_policy_via, admin_create_user_via, admin_request, init_logging,
+};
+use aws_sdk_s3::Client;
+use aws_sdk_s3::error::ProvideErrorMetadata;
+use http::{Method, StatusCode};
+use serde_json::{Value, json};
+use std::time::Duration;
+use tokio::time::timeout;
+use uuid::Uuid;
+
+const BUCKET_ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/buckets";
+const INSPECT_ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/buckets/inspect";
+const SEAL_ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/seal-attempt";
+const ADMIN_BUDGET: Duration = Duration::from_secs(45);
+
+pub(super) struct ArtifactAdmin {
+    access_key: String,
+    secret_key: String,
+}
+
+impl ArtifactAdmin {
+    pub(super) async fn request(
+        &self,
+        dist: &DistCluster,
+        node: usize,
+        route: &str,
+        body: String,
+    ) -> TestResult<(StatusCode, String)> {
+        timeout(
+            ADMIN_BUDGET,
+            admin_request(
+                &dist.cluster.nodes[node].url,
+                Method::POST,
+                route,
+                Some(body),
+                &self.access_key,
+                &self.secret_key,
+            ),
+        )
+        .await?
+    }
+}
+
+async fn create_artifact_admin(dist: &DistCluster, bucket: &str, prefix: &str) -> TestResult<ArtifactAdmin> {
+    let user = ArtifactAdmin {
+        access_key: format!("artifact{}", &Uuid::new_v4().simple().to_string()[..12]),
+        secret_key: Uuid::new_v4().simple().to_string(),
+    };
+    let policy_name = format!("artifact{}", &Uuid::new_v4().simple().to_string()[..12]);
+    let policy = json!({
+        "Version": "2012-10-17",
+        "Statement": [
+            {
+                "Effect": "Allow",
+                "Action": ["admin:CreatePluginArtifactBucket", "admin:GetPluginArtifactBucket"],
+                "Resource": format!("arn:aws:s3:::{bucket}"),
+            },
+            {
+                "Effect": "Allow",
+                "Action": ["admin:SealPluginArtifactAttempt", "admin:SealPluginArtifactRepairs", "admin:SealPluginArtifactWrites"],
+                "Resource": format!("arn:aws:s3:::{bucket}/{}", prefix.trim_end_matches('/')),
+            },
+        ],
+    })
+    .to_string();
+    let url = &dist.cluster.nodes[0].url;
+    let access = &dist.cluster.access_key;
+    let secret = &dist.cluster.secret_key;
+    admin_create_user_via(AdminTransport::Signed, url, access, secret, &user.access_key, &user.secret_key).await?;
+    admin_add_canned_policy_via(AdminTransport::Signed, url, access, secret, &policy_name, &policy).await?;
+    admin_attach_user_policy_via(AdminTransport::Signed, url, access, secret, &policy_name, &user.access_key).await?;
+    Ok(user)
+}
+
+pub(super) async fn create_artifact_attempt(dist: &DistCluster) -> TestResult<(Value, ArtifactAdmin)> {
+    let bucket = unique_bucket("artifact");
+    let prefix = format!("outputs/6169/{}/{}/", Uuid::new_v4(), Uuid::new_v4());
+    let user = create_artifact_admin(dist, &bucket, &prefix).await?;
+    let body = json!({"version": 1, "bucket": bucket, "base_prefix": "outputs/"}).to_string();
+    let (status, response) = user.request(dist, 0, BUCKET_ROUTE, body).await?;
+    assert_eq!(status, StatusCode::OK, "artifact bucket creation failed: {response}");
+    let receipt: Value = serde_json::from_str(&response)?;
+    assert_eq!(receipt["version"], 1);
+    assert_eq!(receipt["bucket"], bucket);
+    assert_eq!(receipt["base_prefix"], "outputs/");
+    assert_eq!(receipt["versioning_enabled"], true);
+    let incarnation = receipt["bucket_incarnation"]
+        .as_str()
+        .ok_or("artifact receipt omitted incarnation")?;
+    assert!(!Uuid::parse_str(incarnation)?.is_nil());
+    let target = json!({
+        "bucket": bucket,
+        "bucket_incarnation": incarnation,
+        "attempt_prefix": prefix,
+    });
+    assert_bucket_identity(dist, &user, 1, &target).await?;
+    Ok((target, user))
+}
+
+async fn assert_bucket_identity(dist: &DistCluster, user: &ArtifactAdmin, node: usize, target: &Value) -> TestResult {
+    let body = json!({"version": 1, "bucket": target["bucket"], "base_prefix": "outputs/"}).to_string();
+    wait_until(
+        ADMIN_BUDGET,
+        || async {
+            let (status, response) = user.request(dist, node, INSPECT_ROUTE, body.clone()).await?;
+            // IAM peers may not have received the new user and policy yet.
+            // Storage failures must fail immediately, including the old gate's 503.
+            if matches!(status, StatusCode::FORBIDDEN | StatusCode::UNAUTHORIZED)
+                && (response.contains("<Code>AccessDenied</Code>") || response.contains("<Code>InvalidAccessKeyId</Code>"))
+            {
+                return Ok(false);
+            }
+            assert_eq!(status, StatusCode::OK, "cross-node artifact inspect failed: {response}");
+            assert_eq!(
+                serde_json::from_str::<Value>(&response)?,
+                json!({
+                    "version": 1,
+                    "bucket": target["bucket"],
+                    "base_prefix": "outputs/",
+                    "bucket_incarnation": target["bucket_incarnation"],
+                    "versioning_enabled": true,
+                }),
+                "inspect must return the created managed bucket identity"
+            );
+            Ok(true)
+        },
+        "artifact IAM user and policy propagation",
+    )
+    .await
+}
+
+pub(super) async fn confirm_seal(dist: &DistCluster, user: &ArtifactAdmin, request: &str, target: &Value) -> TestResult {
+    wait_until(
+        ADMIN_BUDGET,
+        || async {
+            let (status, response) = user.request(dist, 0, SEAL_ROUTE, request.to_owned()).await?;
+            // HTTP readiness does not confirm that remote disk handles have
+            // recovered. Retry only the API's explicit same-identity response.
+            if status == StatusCode::SERVICE_UNAVAILABLE
+                && response.contains("<Code>ServiceUnavailable</Code>")
+                && response.contains("<Message>artifact operation unconfirmed; retry the same identity</Message>")
+            {
+                return Ok(false);
+            }
+            assert_eq!(status, StatusCode::OK, "artifact seal failed: {response}");
+            let receipt: Value = serde_json::from_str(&response)?;
+            assert_eq!(receipt, json!({"version": 1, "target": target, "ordinary_put_sealed": true}));
+            Ok(true)
+        },
+        "exact artifact seal confirmation after receiver recovery",
+    )
+    .await
+}
+
+async fn assert_seal_unconfirmed(dist: &DistCluster, user: &ArtifactAdmin, request: &str) -> TestResult {
+    let (status, body) = user.request(dist, 0, SEAL_ROUTE, request.to_owned()).await?;
+    assert_eq!(status, StatusCode::SERVICE_UNAVAILABLE, "offline receiver seal response: {body}");
+    assert!(
+        body.contains("<Code>ServiceUnavailable</Code>"),
+        "seal failure lost its service code: {body}"
+    );
+    assert!(
+        body.contains("artifact operation unconfirmed"),
+        "seal failure lost its retry contract: {body}"
+    );
+    Ok(())
+}
+
+pub(super) async fn assert_exact_version(client: &Client, bucket: &str, key: &str, version: &str, body: &[u8]) -> TestResult {
+    let output = timeout(
+        Duration::from_secs(30),
+        client.get_object().bucket(bucket).key(key).version_id(version).send(),
+    )
+    .await??;
+    assert_eq!(output.version_id(), Some(version));
+    let actual = timeout(Duration::from_secs(30), output.body.collect()).await??.into_bytes();
+    assert_eq!(actual.as_ref(), body);
+    Ok(())
+}
+
+async fn assert_put_denied(client: &Client, ordinary_bucket: &str, bucket: &str, key: &str) -> TestResult {
+    // The same receiver must still accept a normal write before its sealed probe.
+    put_object(client, ordinary_bucket, key, b"ordinary-control".to_vec()).await?;
+    assert_object_bytes(client, ordinary_bucket, key, b"ordinary-control").await?;
+    let client = s3_probe_client(client);
+    let result = timeout(
+        Duration::from_secs(30),
+        client
+            .put_object()
+            .bucket(bucket)
+            .key(key)
+            .body(b"must-not-publish".to_vec().into())
+            .send(),
+    )
+    .await?;
+    let error = result.expect_err("sealed artifact attempt accepted a new PUT");
+    let service = error
+        .as_service_error()
+        .ok_or("sealed PUT failed without a service rejection")?;
+    assert_eq!(
+        error.raw_response().map(|response| response.status().as_u16()),
+        Some(500),
+        "sealed PUT must return its current HTTP status"
+    );
+    assert_eq!(service.code(), Some("InternalError"), "sealed PUT must return its current service code");
+    // StorageError::Io is redacted at the API boundary; the sealed reason is
+    // not exposed. Success controls and exact inventory checks prove the effect.
+    assert_eq!(
+        service.message(),
+        Some("We encountered an internal error, please try again."),
+        "sealed PUT must retain the public redacted message"
+    );
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_put_seal_survives_full_restart() -> TestResult {
+    init_logging();
+    let mut dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("target omitted bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("target omitted attempt prefix")?;
+    let key = format!("{prefix}result.bin");
+    let mut versions = Vec::new();
+    for (node, body) in [(1, b"first-version".as_slice()), (2, b"second-version".as_slice())] {
+        let client = dist.client(node)?;
+        let output = timeout(
+            Duration::from_secs(30),
+            client.put_object().bucket(bucket).key(&key).body(body.to_vec().into()).send(),
+        )
+        .await??;
+        let version = output.version_id().ok_or("artifact PUT omitted version ID")?.to_owned();
+        assert!(!Uuid::parse_str(&version)?.is_nil());
+        assert_exact_version(&dist.client(3)?, bucket, &key, &version, body).await?;
+        versions.push((version, body.to_vec()));
+    }
+    assert_ne!(versions[0].0, versions[1].0);
+    let ordinary = unique_bucket("ordinary");
+    dist.create_bucket(&ordinary).await?;
+    put_object(&dist.client(2)?, &ordinary, "normal.bin", b"before-seal".to_vec()).await?;
+    assert_object_bytes(&dist.client(3)?, &ordinary, "normal.bin", b"before-seal").await?;
+
+    let request = json!({"version": 1, "target": target}).to_string();
+    confirm_seal(&dist, &user, &request, &target).await?;
+    let other_prefix = format!("outputs/6169/{}/{}/", Uuid::new_v4(), Uuid::new_v4());
+    for phase in ["sealed", "restarted"] {
+        if phase == "restarted" {
+            dist.cluster.stop();
+            dist.cluster.start().await?;
+            wait_for_ready(&dist.cluster).await?;
+        }
+        assert_bucket_identity(&dist, &user, 2, &target).await?;
+        for node in 0..dist.cluster.nodes.len() {
+            // A second attempt in the managed bucket must remain writable;
+            // a broken bucket-wide write path cannot stand in for sealing.
+            let client = dist.client(node)?;
+            let other_key = format!("{other_prefix}{phase}-{node}.bin");
+            let output = timeout(
+                Duration::from_secs(30),
+                client
+                    .put_object()
+                    .bucket(bucket)
+                    .key(&other_key)
+                    .body(b"other-attempt".to_vec().into())
+                    .send(),
+            )
+            .await??;
+            let version = output.version_id().ok_or("other attempt PUT omitted version ID")?;
+            assert!(!Uuid::parse_str(version)?.is_nil());
+            assert_exact_version(
+                &dist.client((node + 1) % dist.cluster.nodes.len())?,
+                bucket,
+                &other_key,
+                version,
+                b"other-attempt",
+            )
+            .await?;
+            assert_put_denied(&dist.client(node)?, &ordinary, bucket, &format!("{prefix}{phase}-{node}.bin")).await?;
+            for (version, body) in &versions {
+                assert_exact_version(&dist.client(node)?, bucket, &key, version, body).await?;
+            }
+        }
+        let listed = dist
+            .client(0)?
+            .list_object_versions()
+            .bucket(bucket)
+            .prefix(prefix)
+            .send()
+            .await?;
+        assert_eq!(listed.versions().len(), 2, "denied PUT left an artifact version: {listed:?}");
+        assert!(listed.delete_markers().is_empty(), "artifact seal created a delete marker");
+        put_object(&dist.client(1)?, &ordinary, "normal.bin", phase.as_bytes().to_vec()).await?;
+        assert_object_bytes(&dist.client(2)?, &ordinary, "normal.bin", phase.as_bytes()).await?;
+    }
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_seal_requires_every_configured_receiver_on_exact_retry() -> TestResult {
+    init_logging();
+    let mut dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let (target, user) = create_artifact_attempt(&dist).await?;
+    let bucket = target["bucket"].as_str().ok_or("target omitted bucket")?;
+    let prefix = target["attempt_prefix"].as_str().ok_or("target omitted attempt prefix")?;
+    let key = format!("{prefix}existing.bin");
+    let output = dist
+        .client(1)?
+        .put_object()
+        .bucket(bucket)
+        .key(&key)
+        .body(b"existing".to_vec().into())
+        .send()
+        .await?;
+    let version = output.version_id().ok_or("artifact PUT omitted version ID")?.to_owned();
+    assert_exact_version(&dist.client(3)?, bucket, &key, &version, b"existing").await?;
+    let ordinary = unique_bucket("ordinary");
+    dist.create_bucket(&ordinary).await?;
+    let request = json!({"version": 1, "target": target}).to_string();
+
+    // The second iteration starts from a fully acknowledged global seal. Its
+    // persisted record cannot replace a fresh acknowledgement from every disk.
+    for _ in 0..2 {
+        dist.cluster.stop_node(3)?;
+        assert_seal_unconfirmed(&dist, &user, &request).await?;
+        dist.cluster.start_node(3).await?;
+        wait_for_ready(&dist.cluster).await?;
+        confirm_seal(&dist, &user, &request, &target).await?;
+    }
+    assert_put_denied(&dist.client(3)?, &ordinary, bucket, &format!("{prefix}late.bin")).await?;
+    assert_exact_version(&dist.client(2)?, bucket, &key, &version, b"existing").await?;
+    let listed = timeout(
+        Duration::from_secs(30),
+        dist.client(0)?.list_object_versions().bucket(bucket).prefix(prefix).send(),
+    )
+    .await??;
+    assert_eq!(listed.versions().len(), 1, "rejected PUT added a version");
+    assert!(listed.delete_markers().is_empty(), "seal added a delete marker");
+    Ok(())
+}
@@ -0,0 +1,235 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+#![cfg(unix)]
+
+use super::artifact_delete_test::physical_snapshot;
+use super::artifact_repair_test::{RepairObject, finish_heal, start_heal};
+use super::artifact_seal_test::{ArtifactAdmin, assert_exact_version, confirm_seal, create_artifact_attempt};
+use super::harness::{
+    DistCluster, DistLayout, TestResult, enable_versioning, s3_probe_client, unique_bucket, wait_for_ready, wait_until,
+};
+use crate::common::init_logging;
+use aws_sdk_s3::error::ProvideErrorMetadata;
+use aws_sdk_s3::types::{
+    ObjectLockConfiguration, ObjectLockEnabled, ObjectLockLegalHold, ObjectLockLegalHoldStatus, ObjectLockRetention,
+    ObjectLockRetentionMode,
+};
+use http::StatusCode;
+use serde_json::{Value, json};
+use std::path::Path;
+use std::time::Duration;
+
+const WRITES_ROUTE: &str = "/rustfs/admin/v3/plugin-artifacts/seal-writes";
+const INTERNAL_MESSAGE: &str = "We encountered an internal error, please try again.";
+
+async fn seal_writes(dist: &DistCluster, user: &ArtifactAdmin, target: &Value, confirmed: bool) -> TestResult {
+    wait_until(Duration::from_secs(45), || async {
+        let (status, response) = user.request(dist, 0, WRITES_ROUTE, json!({"version":1,"target":target}).to_string()).await?;
+        if status == StatusCode::SERVICE_UNAVAILABLE && response.contains("artifact operation unconfirmed; retry the same identity") {
+            return Ok(!confirmed);
+        }
+        assert!(confirmed, "offline configured receiver produced a complete receipt: {status} {response}");
+        assert_eq!(status, StatusCode::OK, "combined writes seal: {response}");
+        assert_eq!(serde_json::from_str::<Value>(&response)?, json!({"version":1,"target":target,"ordinary_put_sealed":true,"attempt_repairs_sealed":true,"all_writes_sealed":true}));
+        Ok(true)
+    }, "combined seal acknowledges both domains on every receiver").await
+}
+
+async fn assert_put_closed(dist: &DistCluster, bucket: &str, key: &str) -> TestResult {
+    let before = physical_snapshot(dist, bucket)?;
+    let client = s3_probe_client(&dist.client(2)?);
+    let error = client
+        .put_object()
+        .bucket(bucket)
+        .key(key)
+        .body(b"must-not-publish".to_vec().into())
+        .send()
+        .await
+        .expect_err("combined seal admitted a new ordinary PUT");
+    let service = error.as_service_error().ok_or("PUT was not a service rejection")?;
+    assert_eq!(service.code(), Some("InternalError"));
+    assert_eq!(service.message(), Some(INTERNAL_MESSAGE));
+    assert!(
+        physical_snapshot(dist, bucket)? == before,
+        "rejected PUT changed the managed physical namespace"
+    );
+    Ok(())
+}
+
+async fn lock_metadata_entrypoints(dist: &DistCluster, managed: &Value, object: &RepairObject, ordinary: &str) -> TestResult {
+    let bucket = managed["bucket"].as_str().ok_or("bucket identity")?;
+    let client = s3_probe_client(&dist.client(0)?);
+    for bucket in [bucket, ordinary] {
+        client
+            .put_object_lock_configuration()
+            .bucket(bucket)
+            .object_lock_configuration(
+                ObjectLockConfiguration::builder()
+                    .object_lock_enabled(ObjectLockEnabled::Enabled)
+                    .build(),
+            )
+            .send()
+            .await?;
+        wait_until(
+            Duration::from_secs(30),
+            || async {
+                for node in 0..4 {
+                    let output = match dist.client(node)?.get_object_lock_configuration().bucket(bucket).send().await {
+                        Ok(output) => output,
+                        Err(error)
+                            if error.as_service_error().and_then(ProvideErrorMetadata::code)
+                                == Some("ObjectLockConfigurationNotFoundError") =>
+                        {
+                            return Ok(false);
+                        }
+                        Err(error) => return Err(error.into()),
+                    };
+                    if output
+                        .object_lock_configuration()
+                        .and_then(|configuration| configuration.object_lock_enabled())
+                        != Some(&ObjectLockEnabled::Enabled)
+                    {
+                        return Ok(false);
+                    }
+                }
+                Ok(true)
+            },
+            "actual Object Lock configuration is enabled on all request nodes",
+        )
+        .await?;
+    }
+    let control = RepairObject::put(dist, ordinary, "lock-control.bin".to_owned()).await?;
+    let retention = ObjectLockRetention::builder()
+        .mode(ObjectLockRetentionMode::Governance)
+        .retain_until_date(aws_sdk_s3::primitives::DateTime::from_secs(chrono::Utc::now().timestamp() + 86400))
+        .build();
+    let hold = ObjectLockLegalHold::builder().status(ObjectLockLegalHoldStatus::On).build();
+    client
+        .put_object_retention()
+        .bucket(ordinary)
+        .key(&control.key)
+        .version_id(&control.version)
+        .retention(retention.clone())
+        .send()
+        .await?;
+    assert_eq!(
+        client
+            .get_object_retention()
+            .bucket(ordinary)
+            .key(&control.key)
+            .version_id(&control.version)
+            .send()
+            .await?
+            .retention()
+            .and_then(|value| value.mode()),
+        Some(&ObjectLockRetentionMode::Governance)
+    );
+    client
+        .put_object_legal_hold()
+        .bucket(ordinary)
+        .key(&control.key)
+        .version_id(&control.version)
+        .legal_hold(hold.clone())
+        .send()
+        .await?;
+    assert_eq!(
+        client
+            .get_object_legal_hold()
+            .bucket(ordinary)
+            .key(&control.key)
+            .version_id(&control.version)
+            .send()
+            .await?
+            .legal_hold()
+            .and_then(|value| value.status()),
+        Some(&ObjectLockLegalHoldStatus::On)
+    );
+    let before = physical_snapshot(dist, bucket)?;
+    let error = client
+        .put_object_retention()
+        .bucket(bucket)
+        .key(&object.key)
+        .version_id(&object.version)
+        .retention(retention)
+        .send()
+        .await
+        .expect_err("managed Retention must reach and fail its unsupported metadata write");
+    let service = error.as_service_error().ok_or("retention was not a service rejection")?;
+    assert_eq!(service.code(), Some("InternalError"));
+    assert_eq!(service.message(), Some(INTERNAL_MESSAGE));
+    assert!(physical_snapshot(dist, bucket)? == before, "retention changed managed metadata");
+    let error = client
+        .put_object_legal_hold()
+        .bucket(bucket)
+        .key(&object.key)
+        .version_id(&object.version)
+        .legal_hold(hold)
+        .send()
+        .await
+        .expect_err("managed LegalHold must reach and fail its unsupported metadata write");
+    let service = error.as_service_error().ok_or("legal hold was not a service rejection")?;
+    assert_eq!(service.code(), Some("InternalError"));
+    assert_eq!(service.message(), Some("Io error: artifact bucket does not support this write operation"));
+    assert!(physical_snapshot(dist, bucket)? == before, "legal hold changed managed metadata");
+    Ok(())
+}
+
+#[tokio::test]
+async fn four_node_artifact_writes_seal_first_partial_retry_offline_and_restart() -> TestResult {
+    init_logging();
+    let mut dist = DistCluster::start(DistLayout::FourNodeFourDisk).await?;
+    let ordinary = unique_bucket("writes-control");
+    dist.create_bucket(&ordinary).await?;
+    enable_versioning(&dist.client(0)?, &ordinary).await?;
+    let (fresh, fresh_user) = create_artifact_attempt(&dist).await?;
+    let fresh_bucket = fresh["bucket"].as_str().ok_or("fresh bucket")?;
+    let fresh_prefix = fresh["attempt_prefix"].as_str().ok_or("fresh prefix")?;
+    let first = RepairObject::put(&dist, fresh_bucket, format!("{fresh_prefix}existing.bin")).await?;
+    lock_metadata_entrypoints(&dist, &fresh, &first, &ordinary).await?;
+    seal_writes(&dist, &fresh_user, &fresh, true).await?;
+    seal_writes(&dist, &fresh_user, &fresh, true).await?;
+    assert_put_closed(&dist, fresh_bucket, &format!("{fresh_prefix}closed.bin")).await?;
+
+    let (partial, partial_user) = create_artifact_attempt(&dist).await?;
+    let bucket = partial["bucket"].as_str().ok_or("partial bucket")?;
+    let prefix = partial["attempt_prefix"].as_str().ok_or("partial prefix")?;
+    let repaired = RepairObject::put(&dist, bucket, format!("{prefix}repair.bin")).await?;
+    // Enter the combined operation with only its ordinary domain closed.
+    confirm_seal(&dist, &partial_user, &json!({"version":1,"target":partial}).to_string(), &partial).await?;
+    let part = repaired.part(Path::new(&dist.cluster.nodes[3].data_dirs[0]), bucket, 3)?;
+    std::fs::remove_file(&part)?;
+    let token = start_heal(&dist, bucket, &repaired.key, false).await?;
+    repaired.assert_repaired(&dist, bucket).await?;
+    finish_heal(&dist, &token, None).await?;
+    for _ in 0..2 {
+        dist.cluster.stop_node(3)?;
+        seal_writes(&dist, &partial_user, &partial, false).await?;
+        dist.cluster.start_node(3).await?;
+        wait_for_ready(&dist.cluster).await?;
+        seal_writes(&dist, &partial_user, &partial, true).await?;
+    }
+    let ordinary_object = RepairObject::put(&dist, &ordinary, "repair-control.bin".to_owned()).await?;
+    for restarted in [false, true] {
+        if restarted {
+            dist.restart_with_current_binary().await?;
+        }
+        seal_writes(&dist, &partial_user, &partial, true).await?;
+        assert_put_closed(&dist, bucket, &format!("{prefix}closed-{restarted}.bin")).await?;
+        if part.exists() {
+            std::fs::remove_file(&part)?;
+        }
+        let before = physical_snapshot(&dist, bucket)?;
+        let token = start_heal(&dist, bucket, &repaired.key, false).await?;
+        finish_heal(&dist, &token, Some(&repaired.key)).await?;
+        assert!(!part.exists(), "combined seal admitted a remote repair publication");
+        assert!(physical_snapshot(&dist, bucket)? == before, "rejected repair changed metadata or shards");
+        assert_exact_version(&dist.client(2)?, bucket, &repaired.key, &repaired.version, &repaired.body).await?;
+        let ordinary_part = ordinary_object.part(Path::new(&dist.cluster.nodes[3].data_dirs[0]), &ordinary, 3)?;
+        std::fs::remove_file(ordinary_part)?;
+        let token = start_heal(&dist, &ordinary, &ordinary_object.key, false).await?;
+        ordinary_object.assert_repaired(&dist, &ordinary).await?;
+        finish_heal(&dist, &token, None).await?;
+    }
+    Ok(())
+}
@@ -347,9 +347,6 @@ fn relocate_pool_storage(cluster: &mut RustFSTestClusterEnvironment, node_idx: u
 }

 pub(super) fn configure_node_logs(cluster: &mut RustFSTestClusterEnvironment, capture_dir: Option<&Path>) -> TestResult {
-    if let Ok(filter) = std::env::var("RUSTFS_E2E_LOG_FILTER") {
-        cluster.set_env("RUST_LOG", filter);
-    }
    if let Some(directory) = capture_dir {
        std::fs::create_dir_all(directory)?;
        for node_idx in 0..cluster.nodes.len() {
@@ -104,12 +104,7 @@ async fn verified_get(
        stage = "response body";
        let mut digest = Sha256::new();
        while let Some(chunk) = output.body.next().await {
-            let chunk = chunk.inspect_err(|error| {
-                eprintln!(
-                    "TLS acceptance: GET body failed: node={node}, key={}, range={:?}, concurrent={concurrent}, received={received}/{}, elapsed={:?}, error={error}",
-                    object.key, expected.range, expected.length, started.elapsed()
-                );
-            })?;
+            let chunk = chunk?;
            received += u64::try_from(chunk.len())?;
            assert!(received <= expected.length, "node {node}: GET exceeded the requested length");
            digest.update(&chunk);
@@ -18,6 +18,13 @@
 //! `.github/workflows/e2e-distributed.yml`. Excluded from `e2e-full` because
 //! each case starts four real `rustfs` processes.

+mod artifact_delete_test;
+mod artifact_inventory_test;
+mod artifact_put_tail_test;
+mod artifact_repair_tail_test;
+mod artifact_repair_test;
+mod artifact_seal_test;
+mod artifact_writes_test;
 mod chaos_test;
 mod concurrency_stability_test;
 mod concurrent_data_movement_test;
@@ -28,17 +35,14 @@ mod harness;
 mod heal_test;
 mod internode_tls_test;
 mod multipart_fence_acceptance_test;
-mod multipart_rpc_delay_test;
 mod object_lock_test;
 mod observability_test;
-mod publication_log;
 mod replication_delete_marker_test;
 mod replication_quota_test;
 mod s3_basic_test;
 mod s3_during_data_movement_test;
 mod scanner_heal_topology_fixture;
 mod scanner_heal_topology_test;
-mod scanner_heal_topology_tier_test;
 mod site_replication_test;
 mod upgrade_test;
 mod versioning_test;
@@ -1,413 +0,0 @@
-// Copyright 2026 RustFS Team
-// SPDX-License-Identifier: Apache-2.0
-
-//! Follow the same append-only log files without rescanning previous JSON rows.
-
-use same_file::Handle;
-use serde::{Deserialize, Deserializer};
-use serde_json::Value;
-use std::fs::File;
-use std::io::{self, Read};
-use std::path::PathBuf;
-
-// Captured RPC spans already produce valid rows above 2 MiB. Keep complete
-// rows bounded independently from the much smaller selected-event history.
-const MAX_LINE_BYTES: usize = 4 << 20;
-const MAX_EVENTS: usize = 128;
-const MAX_EVENT_BYTES: usize = 1 << 20;
-
-fn invalid(reason: &'static str) -> io::Error {
-    io::Error::new(io::ErrorKind::InvalidData, reason)
-}
-
-#[derive(Default, Deserialize)]
-struct Selector {
-    #[serde(default)]
-    event: Value,
-    #[serde(default)]
-    op: Value,
-    #[serde(default)]
-    bucket: Value,
-    #[serde(default)]
-    object: Value,
-}
-
-impl Selector {
-    fn matches(&self, bucket: &str, object: &str) -> bool {
-        self.event.as_str() == Some("object_namespace_lock")
-            && self.op.as_str() == Some("data_movement_publication")
-            && self.bucket.as_str() == Some(bucket)
-            && self.object.as_str() == Some(object)
-    }
-}
-
-#[derive(Deserialize)]
-struct Probe {
-    #[serde(default)]
-    event: Value,
-    #[serde(default)]
-    op: Value,
-    #[serde(default)]
-    bucket: Value,
-    #[serde(default)]
-    object: Value,
-    // A present null is not a missing fields object. The old reader uses the
-    // root only when this key is absent, including for non-object JSON values.
-    #[serde(default, deserialize_with = "present_fields")]
-    fields: Option<Option<Selector>>,
-}
-
-fn present_fields<'de, D: Deserializer<'de>>(d: D) -> Result<Option<Option<Selector>>, D::Error> {
-    Option::<Selector>::deserialize(d).map(Some)
-}
-
-impl Probe {
-    fn matches(&self, bucket: &str, object: &str) -> bool {
-        match &self.fields {
-            Some(Some(fields)) => fields.matches(bucket, object),
-            Some(None) => false,
-            None => {
-                self.event.as_str() == Some("object_namespace_lock")
-                    && self.op.as_str() == Some("data_movement_publication")
-                    && self.bucket.as_str() == Some(bucket)
-                    && self.object.as_str() == Some(object)
-            }
-        }
-    }
-}
-
-fn select(line: &[u8], bucket: &str, object: &str, full_decodes: &mut u64) -> io::Result<Option<Value>> {
-    let text = std::str::from_utf8(line).map_err(|_| invalid("invalid UTF-8 in a completed log row"))?;
-    // Skip unknown fields without allocating a Value tree for every RPC trace.
-    // A shape/duplicate-field error falls back to the original Value parser;
-    // it must not discard valid escaped strings or last-key-wins JSON.
-    if let Ok(probe) = serde_json::from_str::<Probe>(text)
-        && !probe.matches(bucket, object)
-    {
-        return Ok(None);
-    }
-    *full_decodes += 1;
-    let Ok(row) = serde_json::from_str::<Value>(text) else {
-        return Ok(None);
-    };
-    let fields = row.get("fields").unwrap_or(&row);
-    if fields.get("event").and_then(Value::as_str) != Some("object_namespace_lock")
-        || fields.get("op").and_then(Value::as_str) != Some("data_movement_publication")
-        || fields.get("bucket").and_then(Value::as_str) != Some(bucket)
-        || fields.get("object").and_then(Value::as_str) != Some(object)
-    {
-        return Ok(None);
-    }
-    let mut event = fields.clone();
-    event["timestamp"] = row["timestamp"].clone();
-    Ok(Some(event))
-}
-
-struct Tail {
-    path: PathBuf,
-    handle: Handle,
-    offset: u64,
-    pending: Vec<u8>,
-}
-
-impl Tail {
-    fn open(path: PathBuf) -> io::Result<Self> {
-        let file = File::open(&path)?;
-        if !file.metadata()?.is_file() {
-            return Err(invalid("publication log is not a regular file"));
-        }
-        Ok(Self {
-            path,
-            handle: Handle::from_file(file)?,
-            offset: 0,
-            pending: Vec::new(),
-        })
-    }
-
-    fn check_identity(&self) -> io::Result<()> {
-        if Handle::from_path(&self.path)? != self.handle {
-            return Err(invalid("publication log file was replaced"));
-        }
-        Ok(())
-    }
-
-    fn poll(&mut self, bytes_read: &mut u64, mut accept: impl FnMut(&[u8]) -> io::Result<()>) -> io::Result<()> {
-        self.check_identity()?;
-        let end = self.handle.as_file().metadata()?.len();
-        if end < self.offset {
-            return Err(invalid("publication log file was truncated"));
-        }
-        // A fixed high-water snapshot bounds each poll even if writers append
-        // faster than the reader. Bytes after it remain for the next poll.
-        let mut chunk = [0_u8; 64 * 1024];
-        while self.offset < end {
-            let size = usize::try_from((end - self.offset).min(64 * 1024)).expect("a log chunk fits usize");
-            self.handle.as_file_mut().read_exact(&mut chunk[..size])?;
-            self.offset += u64::try_from(size).expect("a bounded log read fits u64");
-            *bytes_read += u64::try_from(size).expect("a bounded log read fits u64");
-            let appended_at = self.pending.len();
-            self.pending.extend_from_slice(&chunk[..size]);
-            let mut start = 0;
-            for end in self.pending[appended_at..]
-                .iter()
-                .enumerate()
-                .filter_map(|(i, byte)| (*byte == b'\n').then_some(appended_at + i + 1))
-            {
-                if end - start > MAX_LINE_BYTES {
-                    return Err(invalid("publication log row exceeds its fixed bound"));
-                }
-                accept(&self.pending[start..end])?;
-                start = end;
-            }
-            self.pending.drain(..start);
-            if self.pending.len() > MAX_LINE_BYTES {
-                return Err(invalid("unfinished publication log row exceeds its fixed bound"));
-            }
-        }
-        self.check_identity()
-    }
-}
-
-pub(super) struct PublicationEvents {
-    tails: Vec<Tail>,
-    bucket: String,
-    object: String,
-    events: Vec<Value>,
-    per_file: Vec<Vec<Value>>,
-    event_count: usize,
-    event_bytes: usize,
-    bytes_read: u64,
-    full_decodes: u64,
-    failed: bool,
-}
-
-impl PublicationEvents {
-    pub(super) fn new(paths: Vec<PathBuf>, bucket: &str, object: &str) -> io::Result<Self> {
-        if paths.is_empty() || paths.len() > 4 {
-            return Err(invalid("publication capture requires one to four log files"));
-        }
-        let tails: Vec<Tail> = paths.into_iter().map(Tail::open).collect::<io::Result<_>>()?;
-        let mut reader = Self {
-            per_file: vec![Vec::new(); tails.len()],
-            tails,
-            bucket: bucket.to_owned(),
-            object: object.to_owned(),
-            events: Vec::new(),
-            event_bytes: 0,
-            event_count: 0,
-            bytes_read: 0,
-            full_decodes: 0,
-            failed: false,
-        };
-        // Prime before holding remote DELETE or starting a movement attempt.
-        // Retain earlier matching events too: the caller still applies its
-        // original timestamp boundary, and evidence keeps the complete history.
-        reader.poll()?;
-        Ok(reader)
-    }
-
-    pub(super) fn poll(&mut self) -> io::Result<&[Value]> {
-        if self.failed {
-            return Err(invalid("publication log reader was already invalidated"));
-        }
-        let result = (|| {
-            for (tail, history) in self.tails.iter_mut().zip(&mut self.per_file) {
-                tail.poll(&mut self.bytes_read, |line| {
-                    if let Some(event) = select(line, &self.bucket, &self.object, &mut self.full_decodes)? {
-                        let bytes = serde_json::to_vec(&event).map_err(io::Error::other)?.len();
-                        if self.event_count >= MAX_EVENTS || bytes > MAX_EVENT_BYTES - self.event_bytes {
-                            return Err(invalid("publication event history exceeds its fixed bound"));
-                        }
-                        self.event_bytes += bytes;
-                        self.event_count += 1;
-                        history.push(event);
-                    }
-                    Ok(())
-                })?;
-            }
-            Ok(())
-        })();
-        // Preserve the old file-then-row order, even when a later poll appends
-        // to an earlier file. Only bounded selected history is copied here.
-        self.events = self.per_file.iter().flatten().cloned().collect();
-        if let Err(error) = result {
-            self.failed = true;
-            return Err(error);
-        }
-        Ok(&self.events)
-    }
-
-    /// Diagnostics only: after a read error this history can be incomplete.
-    pub(super) fn cached(&self) -> &[Value] {
-        &self.events
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use serde_json::json;
-    use std::io::Write;
-
-    fn event(id: &str) -> Value {
-        json!({"timestamp":"2026-10-26T00:00:00Z","event":"object_namespace_lock","op":"data_movement_publication","bucket":"bucket","object":"object","lock_attempt_id":id,"state":"acquiring","extra":{"kept":[1,2]}})
-    }
-    fn append(path: &std::path::Path, raw: &[u8]) {
-        std::fs::OpenOptions::new()
-            .append(true)
-            .open(path)
-            .expect("open append log")
-            .write_all(raw)
-            .expect("append log bytes");
-    }
-    fn legacy(raw: &[u8]) -> Vec<Value> {
-        std::str::from_utf8(raw)
-            .expect("fixture UTF-8")
-            .lines()
-            .filter_map(|line| {
-                let row: Value = serde_json::from_str(line).ok()?;
-                let fields = row.get("fields").unwrap_or(&row);
-                if fields.get("event").and_then(Value::as_str) == Some("object_namespace_lock")
-                    && fields.get("op").and_then(Value::as_str) == Some("data_movement_publication")
-                    && fields.get("bucket").and_then(Value::as_str) == Some("bucket")
-                    && fields.get("object").and_then(Value::as_str) == Some("object")
-                {
-                    let mut result = fields.clone();
-                    result["timestamp"] = row["timestamp"].clone();
-                    Some(result)
-                } else {
-                    None
-                }
-            })
-            .collect()
-    }
-
-    #[test]
-    fn appended_events_keep_full_fields_without_history_rescans() {
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        let mut raw = (json!({"message":"unrelated trace","payload":"x".repeat(4096)}).to_string() + "\n")
-            .repeat(64)
-            .into_bytes();
-        raw.extend_from_slice(
-            format!("{}\n", json!({"event":"object_namespace_lock","op":"get_object","bucket":"bucket","object":"object","spans":"x".repeat(2401832)})).as_bytes(),
-        );
-        raw.extend_from_slice(format!("{}\n", event("first")).as_bytes());
-        std::fs::write(file.path(), &raw).expect("seed log");
-        let mut reader = PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("prime log");
-        assert_eq!(reader.cached(), legacy(&raw));
-        assert_eq!(reader.full_decodes, 1);
-        let bytes = reader.bytes_read;
-        assert_eq!(reader.poll().expect("unchanged poll"), legacy(&raw));
-        assert_eq!(reader.bytes_read, bytes);
-        let next = format!("{}\n", event("second"));
-        append(file.path(), next.as_bytes());
-        raw.extend_from_slice(next.as_bytes());
-        assert_eq!(reader.poll().expect("new rows"), legacy(&raw));
-        assert_eq!(reader.bytes_read, u64::try_from(raw.len()).expect("fixture length"));
-        assert_eq!(reader.full_decodes, 2);
-    }
-
-    #[test]
-    fn later_appends_preserve_the_old_file_then_row_order() {
-        let first = tempfile::NamedTempFile::new().expect("first log");
-        let second = tempfile::NamedTempFile::new().expect("second log");
-        std::fs::write(first.path(), format!("{}\n", event("a1"))).expect("seed first");
-        std::fs::write(second.path(), format!("{}\n", event("b1"))).expect("seed second");
-        let mut reader = PublicationEvents::new(vec![first.path().to_owned(), second.path().to_owned()], "bucket", "object")
-            .expect("prime both");
-        append(first.path(), format!("{}\n", event("a2")).as_bytes());
-        let mut expected = legacy(&std::fs::read(first.path()).expect("first bytes"));
-        expected.extend(legacy(&std::fs::read(second.path()).expect("second bytes")));
-        assert_eq!(reader.poll().expect("append first after second was read"), expected);
-    }
-
-    #[test]
-    fn root_nested_escaped_and_duplicate_fields_match_the_old_reader() {
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        let root = event("root");
-        let mut nested = json!({"timestamp":root["timestamp"],"fields":root});
-        nested["fields"]["extra"] = json!({"unicode":"é"});
-        let null = json!({"fields":null,"event":"object_namespace_lock","op":"data_movement_publication","bucket":"bucket","object":"object"});
-        let escaped = root
-            .to_string()
-            .replace("object_namespace_lock", "\\u006fbject_namespace_lock");
-        let duplicate = root.to_string().replacen("{", "{\"event\":\"earlier-value\",", 1);
-        let raw = format!("{root}\n{nested}\n{null}\n{escaped}\n{duplicate}\nnot json\n{{\"fields\":[]}}\n");
-        std::fs::write(file.path(), &raw).expect("mixed log");
-        let reader = PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("probe and fallback");
-        assert_eq!(reader.cached(), legacy(raw.as_bytes()));
-        assert_eq!(reader.cached().len(), 4);
-    }
-
-    #[test]
-    fn incomplete_rows_and_split_utf8_wait_for_the_newline() {
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        let mut row = event("partial");
-        row["extra"] = json!("é");
-        let raw = format!("{row}\n").into_bytes();
-        let cut = raw.iter().position(|b| *b == 0xc3).expect("UTF-8 prefix") + 1;
-        std::fs::write(file.path(), &raw[..cut]).expect("partial code point");
-        let mut reader =
-            PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("incomplete row is pending");
-        assert!(reader.cached().is_empty());
-        append(file.path(), &raw[cut..raw.len() - 1]);
-        assert!(reader.poll().expect("complete JSON without delimiter").is_empty());
-        append(file.path(), b"\n");
-        assert_eq!(reader.poll().expect("published row"), legacy(&raw));
-    }
-
-    #[test]
-    fn truncation_is_sticky_even_after_the_file_grows_again() {
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        std::fs::write(file.path(), format!("{}\n", event("first"))).expect("seed log");
-        let mut reader = PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("prime log");
-        file.as_file().set_len(0).expect("truncate");
-        assert!(reader.poll().is_err());
-        append(file.path(), format!("{}\n", event("longer replacement")).as_bytes());
-        assert!(reader.poll().is_err());
-        assert_eq!(reader.cached().len(), 1);
-    }
-
-    #[cfg(unix)]
-    #[test]
-    fn a_replaced_path_does_not_switch_to_the_new_log() {
-        let dir = tempfile::tempdir().expect("log dir");
-        let path = dir.path().join("node.log");
-        std::fs::write(&path, b"").expect("log file");
-        let mut reader = PublicationEvents::new(vec![path.clone()], "bucket", "object").expect("open log");
-        std::fs::rename(&path, dir.path().join("retired.log")).expect("replace log");
-        std::fs::write(&path, format!("{}\n", event("other-generation"))).expect("replacement");
-        assert!(reader.poll().is_err());
-        assert!(reader.cached().is_empty());
-    }
-
-    #[test]
-    fn invalid_utf8_and_oversized_or_excessive_records_fail_closed() {
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        let mut reader = PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("empty log");
-        append(file.path(), b"\xff\n");
-        assert!(reader.poll().is_err());
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        let mut reader = PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("empty log");
-        append(file.path(), &vec![b'x'; MAX_LINE_BYTES + 1]);
-        assert!(reader.poll().is_err());
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        let mut reader = PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("empty log");
-        for _ in 0..=MAX_EVENTS {
-            append(file.path(), format!("{}\n", event("attempt")).as_bytes());
-        }
-        assert!(reader.poll().is_err());
-        assert_eq!(reader.cached().len(), MAX_EVENTS);
-        assert!(reader.poll().is_err());
-        let file = tempfile::NamedTempFile::new().expect("log file");
-        let mut reader = PublicationEvents::new(vec![file.path().to_owned()], "bucket", "object").expect("empty log");
-        let mut large = event("large");
-        large["extra"] = json!("x".repeat(600 * 1024));
-        for _ in 0..2 {
-            append(file.path(), format!("{large}\n").as_bytes());
-        }
-        assert!(reader.poll().is_err());
-        assert_eq!(reader.cached().len(), 1);
-        assert!(reader.poll().is_err());
-    }
-}
@@ -216,10 +216,6 @@ pub(crate) struct TopologyRun {

 impl TopologyRun {
    pub(crate) async fn start(label: &str) -> TestResult<Self> {
-        Self::start_with_env(label, &[]).await
-    }
-
-    pub(crate) async fn start_with_env(label: &str, extra_env: &[(&str, &str)]) -> TestResult<Self> {
        let run_name = format!("scanner-heal-topology-{label}-{}", Uuid::new_v4().simple());
        // CI uploads RUSTFS_E2E_LOG_DIR; keep node logs, barrier observations
        // and evidence there so a failed lane can be diagnosed.
@@ -240,7 +236,6 @@ impl TopologyRun {
        let mut env: Vec<(&str, &str)> = TOPOLOGY_ENV.to_vec();
        env.extend_from_slice(FAST_DATA_USAGE_SCANNER_ENV);
        env.push((MOVEMENT_BARRIER_DIR_ENV, movement_dir_value.as_str()));
-        env.extend_from_slice(extra_env);
        let mut dist = DistCluster::new_stopped_with_env(DistLayout::SingleNodeFourDrive, &env).await?;
        dist.capture_logs_under(&log_dir)?;
        dist.cluster.start().await?;
@@ -334,11 +329,6 @@ impl FileBarrier {
        &self.nonce
    }

-    /// Keep the previous phase's release handle while arming a fresh nonce.
-    pub(crate) fn next_phase(&self) -> Self {
-        Self::new(self.dir.clone())
-    }
-
    fn write_atomic(&self, name: &str, body: &[u8]) -> TestResult {
        let tmp = self.dir.join(format!(".{name}.{}.tmp", Uuid::new_v4().simple()));
        std::fs::write(&tmp, body)?;
@@ -370,10 +360,6 @@ impl FileBarrier {
        self.write_atomic(&format!("release.{}", self.nonce), b"io_error")
    }

-    pub(crate) fn release_movement(&self) -> TestResult {
-        self.write_atomic(&format!("release.{}", self.nonce), b"continue")
-    }
-
    pub(crate) fn reached_observations(&self) -> TestResult<Vec<Value>> {
        let prefix = format!("reached.{}.", self.nonce);
        let mut observations = Vec::new();
@@ -528,7 +528,7 @@ async fn scanner_heal_topology_decommission_kill_before_source_cleanup_resumes_w
    run.movement_barrier.disarm()?;
    let restarted_pid = run.restart_killed_node(SEED_POOL).await?;
    let label = "after the killed leader resumed decommission";
-    let outcome = settle_decommission(&run, &manifest, label, MOVEMENT_COMPLETE_TIMEOUT).await;
+    let outcome = settle_decommission(&run, &manifest, label, DECOMMISSION_RESUME_COMPLETE_TIMEOUT).await;
    let strict_nodes = assert_process_durability_strict(&run.node_log_paths());
    record(
        &run,
@@ -1,599 +0,0 @@
-// Copyright 2026 RustFS Team
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! G-TIER: real mover processes contend with a held remote DELETE while a
-//! free version owns the old remote tuple beside a live transitioned version.
-//! The remote is the HTTP fake S3 target, not a provider interoperability test.
-
-use super::harness::{
-    DECOMMISSION_POOL_ID, DRIVES_PER_NODE, TestResult, cluster_admin_ok, decommission_status_json, enable_versioning,
-    rebalance_status_json, sha256_hex, start_decommission, start_rebalance, unique_bucket, wait_for_decommission_complete,
-    wait_for_rebalance_complete,
-};
-use super::publication_log::PublicationEvents;
-use super::scanner_heal_topology_fixture::{
-    MOVEMENT_COMPLETE_TIMEOUT, MovementOperation, SEED_POOL, STAGE_AFTER_RESPONSIBILITY_PERSISTED, STAGE_BEFORE_SOURCE_CLEANUP,
-    TopologyRun, assert_bucket_durability_strict, assert_process_durability_strict, require_test_hooks,
-};
-use crate::common::init_logging;
-use crate::fake_s3_target::{FAKE_ACCESS_KEY, FAKE_SECRET_KEY, FakeS3Target, Operation, RequestRecord};
-use crate::storage_api::OBJECT_LOCK_TRACE_FILTER;
-use aws_sdk_s3::primitives::ByteStream;
-use aws_sdk_s3::types::{
-    BucketLifecycleConfiguration, ExpirationStatus, LifecycleRule, LifecycleRuleFilter, Transition, TransitionStorageClass,
-};
-use http::Method;
-use rustfs_filemeta::{FileMeta, TransitionVersionState};
-use rustfs_utils::http::{SUFFIX_TRANSITION_TIER_DESTINATION_ID, get_consistent_str};
-use serde::Serialize;
-use serde_json::{Value, json};
-use std::collections::BTreeSet;
-use std::path::Path;
-use std::time::Duration;
-use time::{OffsetDateTime, format_description::well_known::Rfc3339};
-use tokio::time::{Instant, sleep, timeout, timeout_at};
-
-const TIER: &str = "TOPOLOGYCOLD";
-const KEY: &str = "000-tier-owner.bin";
-const TRANSITION_TIMEOUT: Duration = Duration::from_secs(90);
-// Free-version cleanup holds its locks for at most 30 s during remote DELETE.
-// Fail before that deadline instead of confusing a retry with the held attempt.
-const DELETE_OVERLAP_TIMEOUT: Duration = Duration::from_secs(20);
-
-#[derive(Clone, Debug, PartialEq, Eq, Serialize)]
-struct RemoteTuple {
-    bucket: String,
-    key: String,
-    version: String,
-    tier: String,
-    destination: String,
-}
-
-#[derive(Debug, PartialEq, Eq, Serialize)]
-struct Owner {
-    pool: usize,
-    drive: usize,
-    version: String,
-    free: bool,
-    remote: RemoteTuple,
-}
-
-fn owners(run: &TopologyRun, bucket: &str, remote_bucket: &str) -> TestResult<Vec<Owner>> {
-    let mut owners = Vec::new();
-    for node in &run.dist.cluster.nodes {
-        for (drive, root) in node.data_dirs.iter().enumerate() {
-            let bytes = match std::fs::read(Path::new(root).join(bucket).join(KEY).join("xl.meta")) {
-                Ok(bytes) => bytes,
-                Err(error) if error.kind() == std::io::ErrorKind::NotFound => continue,
-                Err(error) => return Err(error.into()),
-            };
-            for version in FileMeta::load(&bytes)?.get_file_info_versions(bucket, KEY, true)?.versions {
-                if version.transition_status != "complete" && !version.tier_free_version() {
-                    continue;
-                }
-                assert_eq!(version.transition_version_state, TransitionVersionState::Exact);
-                owners.push(Owner {
-                    pool: node.pool_idx,
-                    drive,
-                    version: version.version_id.ok_or("tier owner omitted its local version")?.to_string(),
-                    free: version.tier_free_version(),
-                    remote: RemoteTuple {
-                        bucket: remote_bucket.to_string(),
-                        key: version.transitioned_objname.clone(),
-                        version: version
-                            .transition_version
-                            .clone()
-                            .ok_or("tier owner omitted its remote version")?,
-                        tier: version.transition_tier.clone(),
-                        destination: get_consistent_str(&version.metadata, SUFFIX_TRANSITION_TIER_DESTINATION_ID)
-                            .ok_or("tier owner omitted its destination identity")?
-                            .to_string(),
-                    },
-                });
-            }
-        }
-    }
-    Ok(owners)
-}
-
-fn assert_remote(target: &FakeS3Target, remote: &RemoteTuple, expected: &[u8]) -> TestResult {
-    assert_eq!(target.stored_versions(&remote.bucket, &remote.key), vec![(remote.version.clone(), false)]);
-    let (body, metadata) = target
-        .stored_object(&remote.bucket, &remote.key)
-        .ok_or("remote bytes are missing")?;
-    assert_eq!(body.as_ref(), expected, "remote bytes changed for {remote:?}");
-    assert_eq!(
-        get_consistent_str(&metadata, SUFFIX_TRANSITION_TIER_DESTINATION_ID),
-        Some(remote.destination.as_str())
-    );
-    assert_eq!(remote.tier, TIER);
-    Ok(())
-}
-
-async fn transition_version(
-    run: &TopologyRun,
-    target: &FakeS3Target,
-    bucket: &str,
-    remote_bucket: &str,
-    body: &[u8],
-) -> TestResult<(String, RemoteTuple)> {
-    let client = run.dist.client(0)?;
-    let put = client
-        .put_object()
-        .bucket(bucket)
-        .key(KEY)
-        .body(ByteStream::from(body.to_vec()))
-        .send()
-        .await?;
-    let version = put.version_id().ok_or("versioned PUT omitted its version")?.to_string();
-    cluster_admin_ok(
-        &run.dist.cluster,
-        Method::POST,
-        &format!("/rustfs/admin/v3/ilm/transition/run?bucket={bucket}&prefix={KEY}&tier={TIER}&dryRun=false"),
-        None,
-    )
-    .await?;
-    let deadline = Instant::now() + TRANSITION_TIMEOUT;
-    loop {
-        let current = owners(run, bucket, remote_bucket)?;
-        let shards: Vec<_> = current
-            .iter()
-            .filter(|owner| owner.version == version && !owner.free)
-            .collect();
-        if let Some(first) = shards.first()
-            && shards.len() == DRIVES_PER_NODE
-            && shards
-                .iter()
-                .all(|owner| owner.pool == SEED_POOL && owner.remote == first.remote)
-        {
-            let head = client
-                .head_object()
-                .bucket(bucket)
-                .key(KEY)
-                .version_id(&version)
-                .send()
-                .await?;
-            assert_eq!(head.storage_class().map(|class| class.as_str()), Some(TIER));
-            assert_remote(target, &first.remote, body)?;
-            return Ok((version, first.remote.clone()));
-        }
-        if Instant::now() >= deadline {
-            return Err(format!("transition of {bucket}/{KEY}@{version} did not reach every seed drive: {current:?}").into());
-        }
-        sleep(Duration::from_millis(200)).await;
-    }
-}
-
-fn event_time(event: &Value) -> TestResult<OffsetDateTime> {
-    Ok(OffsetDateTime::parse(
-        event["timestamp"].as_str().ok_or("lock event omitted its timestamp")?,
-        &Rfc3339,
-    )?)
-}
-
-async fn pending_publication(events: &mut PublicationEvents, started: OffsetDateTime) -> TestResult<Value> {
-    loop {
-        let observed = events.poll()?;
-        for event in observed {
-            if event_time(event)? < started {
-                continue;
-            }
-            assert_ne!(
-                event["state"], "acquired",
-                "mover acquired its publication lock while remote DELETE was held"
-            );
-            if event["state"] == "acquiring"
-                && !observed
-                    .iter()
-                    .any(|later| later["lock_attempt_id"] == event["lock_attempt_id"] && later["state"] != "acquiring")
-            {
-                assert!(event["lock_attempt_id"].as_str().is_some_and(|id| !id.is_empty()));
-                return Ok(event.clone());
-            }
-        }
-        sleep(Duration::from_millis(50)).await;
-    }
-}
-
-async fn acquired_publication(events: &mut PublicationEvents, pending: &Value) -> TestResult<Value> {
-    loop {
-        for event in events.poll()? {
-            if event["lock_attempt_id"] != pending["lock_attempt_id"] {
-                continue;
-            }
-            match event["state"].as_str() {
-                Some("acquired") => return Ok(event.clone()),
-                Some("failed" | "cancelled") => return Err(format!("held publication attempt did not acquire: {event}").into()),
-                _ => {}
-            }
-        }
-        sleep(Duration::from_millis(50)).await;
-    }
-}
-
-fn deletes(target: &FakeS3Target, remote: &RemoteTuple) -> Vec<RequestRecord> {
-    target
-        .requests()
-        .into_iter()
-        .filter(|request| {
-            request.operation == Operation::DeleteObject
-                && request.bucket == remote.bucket
-                && request.key.as_deref() == Some(remote.key.as_str())
-        })
-        .collect()
-}
-
-async fn verify_live(run: &TopologyRun, bucket: &str, live_version: &str, old_version: &str, body: &[u8]) -> TestResult {
-    for client in run.dist.clients()? {
-        let got = client
-            .get_object()
-            .bucket(bucket)
-            .key(KEY)
-            .version_id(live_version)
-            .send()
-            .await?;
-        assert_eq!(got.body.collect().await?.into_bytes().as_ref(), body);
-        let latest = client.head_object().bucket(bucket).key(KEY).send().await?;
-        assert_eq!(latest.version_id(), Some(live_version));
-        assert_eq!(latest.storage_class().map(|class| class.as_str()), Some(TIER));
-        let deleted = client
-            .get_object()
-            .bucket(bucket)
-            .key(KEY)
-            .version_id(old_version)
-            .send()
-            .await;
-        let error = deleted.expect_err("deleted source version must not be visible");
-        assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(404));
-        let listed = client.list_object_versions().bucket(bucket).prefix(KEY).send().await?;
-        assert_eq!(listed.versions().len(), 1, "free owners must not appear as object versions");
-        assert_eq!(listed.versions()[0].version_id(), Some(live_version));
-        assert!(
-            listed.delete_markers().is_empty(),
-            "moving the free owner must not create a delete marker"
-        );
-    }
-    Ok(())
-}
-
-async fn tier_delete_during_movement(decommission: bool) -> TestResult {
-    init_logging();
-    require_test_hooks();
-    let operation = if decommission { "decommission" } else { "rebalance" };
-    let target = FakeS3Target::start().await?;
-    let remote_bucket = unique_bucket("sht-cold");
-    target.create_bucket(&remote_bucket);
-    let mut run = TopologyRun::start_with_env(
-        &format!("tier-{operation}"),
-        &[
-            ("RUSTFS_TIER_RUSTFS_ALLOW_LOOPBACK_ENDPOINT", "true"),
-            ("RUSTFS_OBJECT_LOCK_DIAG_ENABLE", "true"),
-            ("RUST_LOG", OBJECT_LOCK_TRACE_FILTER),
-        ],
-    )
-    .await?;
-    let tier = json!({
-        "type": "rustfs",
-        "rustfs": {
-            "name": TIER, "endpoint": target.endpoint(), "accessKey": FAKE_ACCESS_KEY,
-            "secretKey": FAKE_SECRET_KEY, "bucket": remote_bucket, "prefix": "",
-            "region": "us-east-1", "storageClass": ""
-        }
-    });
-    let deadline = Instant::now() + Duration::from_secs(30);
-    loop {
-        match cluster_admin_ok(&run.dist.cluster, Method::PUT, "/rustfs/admin/v3/tier", Some(tier.to_string())).await {
-            Ok(_) => break,
-            Err(_) if Instant::now() < deadline => sleep(Duration::from_millis(250)).await,
-            Err(error) => return Err(error),
-        }
-    }
-    let bucket = unique_bucket("sht-tier");
-    run.dist.create_bucket(&bucket).await?;
-    let client = run.dist.client(0)?;
-    enable_versioning(&client, &bucket).await?;
-    let rule = LifecycleRule::builder()
-        .id("tier-owner")
-        .status(ExpirationStatus::Enabled)
-        .filter(LifecycleRuleFilter::builder().prefix(KEY).build())
-        .transitions(
-            Transition::builder()
-                .days(0)
-                .storage_class(TransitionStorageClass::from(TIER))
-                .build(),
-        )
-        .build()?;
-    client
-        .put_bucket_lifecycle_configuration()
-        .bucket(&bucket)
-        .lifecycle_configuration(BucketLifecycleConfiguration::builder().rules(rule).build()?)
-        .send()
-        .await?;
-    let old_body = vec![0x31; 4096];
-    let live_body = vec![0x92; 8192];
-    let (old_version, old_remote) = transition_version(&run, &target, &bucket, &remote_bucket, &old_body).await?;
-    let (live_version, live_remote) = transition_version(&run, &target, &bucket, &remote_bucket, &live_body).await?;
-    assert_ne!(
-        old_remote.key, live_remote.key,
-        "the obsolete and live versions need distinct remote tuples"
-    );
-    // Keep the seed pool above the rebalance goal until the first key is visited.
-    // These local objects are outside the transition rule's prefix.
-    for index in 0..16 {
-        client
-            .put_object()
-            .bucket(&bucket)
-            .key(format!("zz-load/{index:02}.bin"))
-            .body(ByteStream::from(vec![index as u8; 1024 * 1024]))
-            .send()
-            .await?;
-    }
-    let bucket_durability = assert_bucket_durability_strict(&run.dist.cluster, &[&bucket]).await?;
-    run.dist.expand_to_four_pools().await?;
-    assert_bucket_durability_strict(&run.dist.cluster, &[&bucket]).await?;
-    let seeded = owners(&run, &bucket, &remote_bucket)?;
-    assert_eq!(seeded.len(), 2 * DRIVES_PER_NODE);
-    assert!(seeded.iter().all(|owner| owner.pool == SEED_POOL && !owner.free));
-
-    let mut decommission_start = Box::pin(start_decommission(&run.dist.cluster, DECOMMISSION_POOL_ID));
-    let mut startup = Value::Null;
-    if decommission {
-        run.movement_barrier.arm_movement(
-            "decommission_start",
-            ".rustfs.sys",
-            "pool.bin",
-            STAGE_AFTER_RESPONSIBILITY_PERSISTED,
-        )?;
-        let requested_at = OffsetDateTime::now_utc();
-        let preparation_started = Instant::now();
-        let reached = tokio::select! {
-            reached = run.movement_barrier.wait_reached(MOVEMENT_COMPLETE_TIMEOUT) => {
-                reached.map_err(|error| format!(
-                    "G-TIER decommission start preparation failed before DELETE: {error}"
-                ))?
-            }
-            result = &mut decommission_start => {
-                return Err(format!(
-                    "G-TIER decommission start preparation returned before durable-start barrier {}: {result:?}",
-                    run.movement_barrier.nonce()
-                ).into());
-            }
-        };
-        startup = json!({
-            "requested_at": requested_at.format(&Rfc3339)?,
-            "parked_at": OffsetDateTime::now_utc().format(&Rfc3339)?,
-            "preparation_elapsed_ms": preparation_started.elapsed().as_millis(),
-            "barrier": reached,
-        });
-    }
-    // The durable-start barrier has released the movement writer but has not
-    // started a worker. Install a separate release nonce before holding DELETE.
-    let cleanup_barrier = run.movement_barrier.next_phase();
-    cleanup_barrier.arm_movement(operation, &bucket, KEY, STAGE_BEFORE_SOURCE_CLEANUP)?;
-    let mut publication_events = PublicationEvents::new(run.node_log_paths(), &bucket, KEY)?;
-    let mut delete_gate = target.hold_delete_object(&remote_bucket, &old_remote.key);
-    // The public DELETE persists a free owner and enqueues its remote cleanup.
-    let client = run.dist.client(0)?;
-    client
-        .delete_object()
-        .bucket(&bucket)
-        .key(KEY)
-        .version_id(&old_version)
-        .send()
-        .await
-        .map_err(|error| format!("G-TIER {operation} public DELETE before remote gate failed: {error}; startup={startup}"))?;
-    timeout(TRANSITION_TIMEOUT, delete_gate.wait_until_entered())
-        .await
-        .map_err(|error| format!("G-TIER {operation} DELETE gate entry timed out: {error}; startup={startup}"))?
-        .map_err(|error| format!("G-TIER {operation} DELETE gate entry failed: {error}; startup={startup}"))?;
-    let delete_gate_entered_at = OffsetDateTime::now_utc();
-    let overlap_started = Instant::now();
-    let overlap_deadline = overlap_started + DELETE_OVERLAP_TIMEOUT;
-    let held = owners(&run, &bucket, &remote_bucket)?;
-    assert_eq!(held.len(), 2 * DRIVES_PER_NODE);
-    let old_owners: Vec<_> = held.iter().filter(|owner| owner.remote == old_remote).collect();
-    assert_eq!(old_owners.len(), DRIVES_PER_NODE);
-    assert!(
-        old_owners
-            .iter()
-            .all(|owner| owner.pool == SEED_POOL && owner.free && owner.version != old_version)
-    );
-    assert_eq!(old_owners.iter().map(|owner| &owner.version).collect::<BTreeSet<_>>().len(), 1);
-    assert_eq!(
-        held.iter()
-            .filter(|owner| {
-                owner.pool == SEED_POOL && !owner.free && owner.version == live_version && owner.remote == live_remote
-            })
-            .count(),
-        DRIVES_PER_NODE
-    );
-    assert_remote(&target, &old_remote, &old_body)?;
-    assert_remote(&target, &live_remote, &live_body)?;
-    let held_deletes = deletes(&target, &old_remote);
-    assert!(!held_deletes.is_empty());
-    assert!(held_deletes.iter().all(|request| {
-        request.prepared_response.is_none() && request.version_id.as_deref() == Some(old_remote.version.as_str())
-    }));
-    assert!(deletes(&target, &live_remote).is_empty());
-
-    let movement_started = OffsetDateTime::now_utc();
-    if decommission {
-        startup["released_at"] = json!(movement_started.format(&Rfc3339)?);
-        run.movement_barrier.release_movement()?;
-    }
-    let rebalance_id = timeout_at(overlap_deadline, async {
-        if decommission {
-            decommission_start.as_mut().await?;
-            Ok::<_, Box<dyn std::error::Error + Send + Sync>>(None)
-        } else {
-            Ok(Some(start_rebalance(&run.dist.cluster).await?))
-        }
-    })
-    .await
-    .map_err(|error| {
-        format!("G-TIER {operation} start acknowledgment timed out within DELETE overlap: {error}; startup={startup}")
-    })?
-    .map_err(|error| {
-        format!("G-TIER {operation} start acknowledgment failed within DELETE overlap: {error}; startup={startup}")
-    })?;
-    drop(decommission_start);
-    let movement_acknowledged_at = OffsetDateTime::now_utc();
-    let pending = timeout_at(overlap_deadline, pending_publication(&mut publication_events, movement_started))
-        .await
-        .map_err(|error| format!(
-            "G-TIER {operation} publication pending timed out within DELETE overlap: {error}; startup={startup}; lock_events={:?}; cleanup_barrier={:?}",
-            publication_events.cached(), cleanup_barrier.reached_observations()
-        ))?
-        .map_err(|error| format!("G-TIER {operation} publication pending failed within DELETE overlap: {error}"))?;
-    // Positive gate entry, exact physical ownership and the pending lock attempt
-    // establish the overlap; an absent log alone is not an ordering assertion.
-    assert_eq!(owners(&run, &bucket, &remote_bucket)?, held);
-    assert_remote(&target, &old_remote, &old_body)?;
-    let released_at = OffsetDateTime::now_utc();
-    let delete_overlap_elapsed_ms = overlap_started.elapsed().as_millis();
-    drop(delete_gate);
-    let acquired = timeout(DELETE_OVERLAP_TIMEOUT, acquired_publication(&mut publication_events, &pending))
-        .await
-        .map_err(|error| format!(
-            "G-TIER {operation} publication acquired after DELETE release timed out: {error}; pending={pending}; lock_events={:?}; cleanup_barrier={:?}",
-            publication_events.cached(), cleanup_barrier.reached_observations()
-        ))?
-        .map_err(|error| format!("G-TIER {operation} publication acquired after DELETE release failed: {error}"))?;
-    assert!(event_time(&pending)? >= movement_started && event_time(&pending)? < released_at);
-    assert!(
-        event_time(&acquired)? >= released_at,
-        "the same publication attempt must acquire after DELETE is released"
-    );
-    drop(publication_events);
-    let reached = cleanup_barrier
-        .wait_reached_during(
-            &run.dist.cluster,
-            match rebalance_id.as_deref() {
-                Some(id) => MovementOperation::Rebalance(id),
-                None => MovementOperation::Decommission(DECOMMISSION_POOL_ID),
-            },
-            MOVEMENT_COMPLETE_TIMEOUT,
-        )
-        .await
-        .map_err(|error| format!("G-TIER {operation} before-source-cleanup barrier failed: {error}"))?;
-    let published = owners(&run, &bucket, &remote_bucket)?;
-    assert!(
-        published
-            .iter()
-            .all(|owner| !owner.free && owner.version == live_version && owner.remote == live_remote)
-    );
-    let publication_pools: BTreeSet<_> = published.iter().map(|owner| owner.pool).collect();
-    assert!(publication_pools.contains(&SEED_POOL) && publication_pools.iter().any(|pool| *pool != SEED_POOL));
-    assert_eq!(published.len(), publication_pools.len() * DRIVES_PER_NODE);
-    assert!(target.stored_versions(&remote_bucket, &old_remote.key).is_empty());
-    assert_remote(&target, &live_remote, &live_body)?;
-    cleanup_barrier.release_movement()?;
-    cleanup_barrier.disarm()?;
-    let completion = match rebalance_id.as_deref() {
-        Some(id) => {
-            wait_for_rebalance_complete(&run.dist.cluster, id, MOVEMENT_COMPLETE_TIMEOUT).await?;
-            rebalance_status_json(&run.dist.cluster).await?
-        }
-        None => {
-            wait_for_decommission_complete(&run.dist.cluster, DECOMMISSION_POOL_ID, MOVEMENT_COMPLETE_TIMEOUT).await?;
-            decommission_status_json(&run.dist.cluster).await?
-        }
-    };
-    let settled = owners(&run, &bucket, &remote_bucket)?;
-    assert_eq!(settled.len(), DRIVES_PER_NODE);
-    assert_eq!(settled.iter().map(|owner| owner.pool).collect::<BTreeSet<_>>().len(), 1);
-    assert!(
-        settled
-            .iter()
-            .all(|owner| owner.pool != SEED_POOL && !owner.free && owner.remote == live_remote)
-    );
-    verify_live(&run, &bucket, &live_version, &old_version, &live_body).await?;
-    if decommission {
-        run.dist.remove_retired_pools_and_restart(&[SEED_POOL]).await?;
-    } else {
-        run.dist.restart_current_binary_gracefully().await?;
-    }
-    verify_live(&run, &bucket, &live_version, &old_version, &live_body).await?;
-    let restarted = owners(&run, &bucket, &remote_bucket)?;
-    assert_eq!(restarted.len(), DRIVES_PER_NODE);
-    assert_eq!(restarted.iter().map(|owner| owner.pool).collect::<BTreeSet<_>>().len(), 1);
-    assert!(
-        restarted
-            .iter()
-            .all(|owner| !owner.free && owner.version == live_version && owner.remote == live_remote)
-    );
-    assert_remote(&target, &live_remote, &live_body)?;
-    assert!(target.stored_versions(&remote_bucket, &old_remote.key).is_empty());
-    assert!(
-        deletes(&target, &live_remote).is_empty(),
-        "the live transitioned tuple must never receive DELETE"
-    );
-    let remote_deletes = deletes(&target, &old_remote);
-    assert!(!remote_deletes.is_empty());
-    assert!(
-        remote_deletes
-            .iter()
-            .all(|request| request.version_id.as_deref() == Some(old_remote.version.as_str()))
-    );
-    let successful = remote_deletes
-        .iter()
-        .filter_map(|request| request.prepared_response.as_ref())
-        .find(|response| response.status == 204)
-        .ok_or("old remote tuple never completed DELETE")?;
-    let deleted_at_ms = i128::from(
-        successful
-            .prepared_at_unix_millis
-            .ok_or("DELETE response omitted its timestamp")?,
-    );
-    assert!(deleted_at_ms >= released_at.unix_timestamp_nanos() / 1_000_000);
-    assert!(event_time(&acquired)?.unix_timestamp_nanos() / 1_000_000 >= deleted_at_ms);
-    assert_bucket_durability_strict(&run.dist.cluster, &[&bucket]).await?;
-    let strict_nodes = assert_process_durability_strict(&run.node_log_paths())?;
-    run.write_evidence(
-        &format!("g-tier-{operation}"),
-        &json!({
-            "gate": "G-TIER", "operation": operation, "rebalance_id": rebalance_id,
-            "startup": startup,
-            "delete_gate_entered_at": delete_gate_entered_at.format(&Rfc3339)?,
-            "movement_overlap_started_at": movement_started.format(&Rfc3339)?,
-            "movement_acknowledged_at": movement_acknowledged_at.format(&Rfc3339)?,
-            "delete_overlap_timeout_ms": DELETE_OVERLAP_TIMEOUT.as_millis(),
-            "delete_overlap_elapsed_ms": delete_overlap_elapsed_ms,
-            "remote_backend": "HTTP fake_s3_target with versioning enabled",
-            "ordering": "remote DELETE held, mover publication waiting, DELETE released, same publication acquired",
-            "bucket": bucket, "key": KEY, "bucket_durability": bucket_durability,
-            "process_durability_strict_nodes": strict_nodes,
-            "old_version": old_version, "old_remote": old_remote, "old_sha256": sha256_hex(&old_body),
-            "live_version": live_version, "live_remote": live_remote, "live_sha256": sha256_hex(&live_body),
-            "owners_while_delete_held": held, "publication_waiting": pending, "publication_acquired": acquired,
-            "held_delete_sequences": held_deletes.iter().map(|request| request.sequence).collect::<Vec<_>>(),
-            "delete_released_at": released_at.format(&Rfc3339)?, "remote_delete_completed_at_unix_millis": deleted_at_ms,
-            "barrier": reached, "owners_before_source_cleanup": published, "owners_after_movement": settled,
-            "owners_after_restart": restarted, "completion": completion,
-            "old_remote_delete_attempts": remote_deletes.len(), "live_remote_delete_attempts": 0,
-            "source_readback_nodes": run.dist.cluster.nodes.len(),
-        }),
-    )?;
-    Ok(())
-}
-
-#[tokio::test]
-async fn scanner_heal_topology_tier_free_owner_delete_overlaps_rebalance() -> TestResult {
-    tier_delete_during_movement(false).await
-}
-
-#[tokio::test]
-async fn scanner_heal_topology_tier_free_owner_delete_overlaps_decommission() -> TestResult {
-    tier_delete_during_movement(true).await
-}
@@ -60,7 +60,7 @@ struct UpgradeSeed {
    iam_secret: &'static str,
 }

-pub(super) fn source_binary() -> TestResult<PathBuf> {
+fn source_binary() -> TestResult<PathBuf> {
    let path = std::env::var_os(SOURCE_BINARY_ENV).map(PathBuf::from).ok_or_else(|| {
        format!(
            "{SOURCE_BINARY_ENV} must point to the pinned previous release binary (the e2e-distributed workflow downloads it)"
@@ -487,43 +487,36 @@ impl JournaledHeaders {
 struct ControlState {
    scripts: HashMap<Operation, VecDeque<FaultAction>>,
    keyed_scripts: HashMap<(Operation, String), VecDeque<FaultAction>>,
-    held_get: Option<HeldObject>,
-    held_delete: Option<HeldObject>,
+    held_get: Option<HeldGetObject>,
    requests: VecDeque<RequestRecord>,
    next_sequence: u64,
 }

 #[derive(Clone)]
-struct HeldObject {
+struct HeldGetObject {
    bucket: String,
    key: String,
    entered: watch::Sender<usize>,
    released: watch::Receiver<bool>,
 }

-/// Holds every matching operation, including retries, until this guard is dropped.
-#[must_use = "dropping the guard releases the held requests"]
-pub struct ObjectGate {
+/// Holds every GET of one object, including retries, until this guard is dropped.
+#[must_use = "dropping the guard releases the held GET requests"]
+pub struct GetObjectGate {
    control: Arc<Mutex<ControlState>>,
-    operation: Operation,
    entered: watch::Receiver<usize>,
    released: watch::Sender<bool>,
 }

-impl ObjectGate {
+impl GetObjectGate {
    pub async fn wait_until_entered(&mut self) -> Result<(), watch::error::RecvError> {
        self.entered.wait_for(|count| *count > 0).await.map(|_| ())
    }
 }

-impl Drop for ObjectGate {
+impl Drop for GetObjectGate {
    fn drop(&mut self) {
-        let mut state = lock(&self.control);
-        match self.operation {
-            Operation::GetObject => state.held_get = None,
-            Operation::DeleteObject => state.held_delete = None,
-            _ => unreachable!("only GET and DELETE have object gates"),
-        }
+        lock(&self.control).held_get = None;
        self.released.send_replace(true);
    }
 }
@@ -1115,40 +1108,24 @@ impl FakeS3Target {
    }

    /// Hold one exact bucket/key before any GET response can reach the client.
-    /// The fixture supports one live GET gate; request and connection deadlines still apply.
-    pub fn hold_get_object(&self, bucket: &str, key: &str) -> ObjectGate {
-        self.hold_object_operation(Operation::GetObject, bucket, key)
-    }
-
-    /// Hold one exact bucket/key before DELETE changes any stored version.
-    /// The fixture supports one live DELETE gate; request deadlines still apply.
-    pub fn hold_delete_object(&self, bucket: &str, key: &str) -> ObjectGate {
-        self.hold_object_operation(Operation::DeleteObject, bucket, key)
-    }
-
-    fn hold_object_operation(&self, operation: Operation, bucket: &str, key: &str) -> ObjectGate {
+    /// The fixture supports one live gate; request and connection deadlines still apply.
+    pub fn hold_get_object(&self, bucket: &str, key: &str) -> GetObjectGate {
        assert!(
            bucket.len() <= MAX_RETAINED_IDENTIFIER_BYTES && key.len() <= MAX_RETAINED_IDENTIFIER_BYTES,
-            "held object identifiers exceed the fixture limit"
+            "held GET identifiers exceed the fixture limit"
        );
        let mut state = lock(&self.control);
-        let slot = match operation {
-            Operation::GetObject => &mut state.held_get,
-            Operation::DeleteObject => &mut state.held_delete,
-            _ => unreachable!("only GET and DELETE have object gates"),
-        };
-        assert!(slot.is_none(), "fake target already holds a {operation:?} gate");
+        assert!(state.held_get.is_none(), "fake target already holds a GET gate");
        let (entered, entered_rx) = watch::channel(0);
        let (released, released_rx) = watch::channel(false);
-        *slot = Some(HeldObject {
+        state.held_get = Some(HeldGetObject {
            bucket: bucket.to_string(),
            key: key.to_string(),
            entered,
            released: released_rx,
        });
-        ObjectGate {
+        GetObjectGate {
            control: Arc::clone(&self.control),
-            operation,
            entered: entered_rx,
            released,
        }
@@ -2818,15 +2795,6 @@ impl S3 for FakeBackend {
        apply_non_body_fault(fault.as_ref(), &self.control).await?;
        let headers = req.headers;
        let input = req.input;
-        let held_delete = lock(&self.control)
-            .held_delete
-            .as_ref()
-            .filter(|held| held.bucket == input.bucket && held.key == input.key)
-            .cloned();
-        if let Some(mut held) = held_delete {
-            held.entered.send_modify(|count| *count += 1);
-            let _ = held.released.wait_for(|released| *released).await;
-        }
        let mut state = lock(&self.store);
        let Some(versioned) = state.buckets.get(&input.bucket).map(|bucket| bucket.versioned) else {
            return Err(s3s::s3_error!(NoSuchBucket, "bucket does not exist"));
@@ -3468,68 +3436,6 @@ mod tests {
        Ok(())
    }

-    #[tokio::test]
-    async fn delete_object_gate_retains_exact_version_until_release() -> Result<(), BoxError> {
-        let target = FakeS3Target::start().await?;
-        let bucket = "delete-gated-target";
-        target.create_bucket(bucket);
-        for key in ["held", "unrelated"] {
-            target.put_seed_object(bucket, key, Bytes::from_static(b"payload"), &SeedMetadata::default());
-        }
-        let versions = target.stored_versions(bucket, "held");
-        let mut gate = target.hold_delete_object(bucket, "held");
-        let client = client(&target);
-        let held_client = client.clone();
-        let version = versions[0].0.clone();
-        let mut requests = tokio::task::JoinSet::new();
-        requests.spawn(async move {
-            held_client
-                .delete_object()
-                .bucket(bucket)
-                .key("held")
-                .version_id(version)
-                .send()
-                .await
-        });
-        timeout(Duration::from_secs(2), gate.wait_until_entered()).await??;
-        assert_eq!(
-            target.stored_versions(bucket, "held"),
-            versions,
-            "the gate must precede the storage mutation"
-        );
-        assert!(requests.try_join_next().is_none());
-        let held = target
-            .requests()
-            .into_iter()
-            .find(|record| record.operation == Operation::DeleteObject && record.key.as_deref() == Some("held"))
-            .expect("the held DELETE must be journaled");
-        assert_eq!(held.version_id.as_deref(), Some(versions[0].0.as_str()));
-        assert_eq!(held.prepared_response, None);
-        client
-            .delete_object()
-            .bucket(bucket)
-            .key("unrelated")
-            .version_id(&target.stored_versions(bucket, "unrelated")[0].0)
-            .send()
-            .await?;
-        assert!(target.stored_versions(bucket, "unrelated").is_empty());
-        assert_eq!(target.stored_versions(bucket, "held"), versions);
-        drop(gate);
-        timeout(Duration::from_secs(2), requests.join_next())
-            .await?
-            .expect("held DELETE task")??;
-        assert!(target.stored_versions(bucket, "held").is_empty());
-        let released = target
-            .requests()
-            .into_iter()
-            .find(|record| record.sequence == held.sequence)
-            .and_then(|record| record.prepared_response)
-            .expect("released DELETE response");
-        assert_eq!(released.status, 204);
-        assert_eq!(released.version_id.as_deref(), Some(versions[0].0.as_str()));
-        Ok(())
-    }
-
    #[tokio::test]
    async fn object_lock_target_requires_a_checksum_on_locked_puts() -> Result<(), BoxError> {
        use aws_sdk_s3::error::ProvideErrorMetadata;
@@ -21,7 +21,7 @@ mod tests {
    };
    use crate::common::{
        ClusterTopology, FAST_DATA_USAGE_SCANNER_ENV, RustFSTestClusterEnvironment, RustFSTestEnvironment, admin_request,
-        init_logging, local_http_client, rustfs_binary_path,
+        init_logging, rustfs_binary_path,
    };
    use crate::storage_api::RUSTFS_META_BUCKET;
    use aws_sdk_s3::{
@@ -53,196 +53,6 @@ mod tests {
        expected_pool_metadata: Option<VersionShardCensus>,
    }

-    fn pool_metadata_matches_republished_manifest(actual: &VersionShardCensus, expected: &VersionShardCensus) -> bool {
-        for data_dir in [&actual.data_dir, &expected.data_dir] {
-            if data_dir
-                .as_deref()
-                .and_then(|value| uuid::Uuid::parse_str(value).ok())
-                .is_none_or(|value| value.is_nil())
-            {
-                return false;
-            }
-        }
-        // The owning CAS republishes the same canonical payload with a fresh
-        // physical identity. Every shard and layout field must still match.
-        let mut republished = actual.clone();
-        republished.data_dir = expected.data_dir.clone();
-        republished.matches_manifest(expected)
-    }
-
-    fn pool_metadata_node_health_is_ready(status: u16, payload: &serde_json::Value) -> bool {
-        (200..300).contains(&status)
-            && payload["ready"] == true
-            && payload["details"]["poolMetadata"]["ready"] == true
-            && payload["details"]["storage"]["readQuorum"] == true
-            && payload["details"]["storage"]["writeQuorum"] == true
-    }
-
-    async fn all_nodes_pool_metadata_readiness(
-        cluster: &RustFSTestClusterEnvironment,
-        deadline: Instant,
-    ) -> (bool, serde_json::Value) {
-        let http = local_http_client();
-        let mut ready = !cluster.nodes.is_empty();
-        let mut observations = Vec::with_capacity(cluster.nodes.len());
-        for (node, environment) in cluster.nodes.iter().enumerate() {
-            let response = tokio::time::timeout_at(deadline, async {
-                let response = http
-                    .get(format!("{}/health/ready", environment.url))
-                    .timeout(Duration::from_secs(3))
-                    .send()
-                    .await?;
-                let status = response.status().as_u16();
-                let payload = response.json::<serde_json::Value>().await?;
-                Ok::<_, reqwest::Error>((status, payload))
-            })
-            .await;
-            let observation = match response {
-                Ok(Ok((status, payload))) => {
-                    let node_ready = pool_metadata_node_health_is_ready(status, &payload);
-                    ready &= node_ready;
-                    serde_json::json!({"node": node, "status": status, "ready": node_ready, "payload": payload})
-                }
-                Ok(Err(error)) => {
-                    ready = false;
-                    serde_json::json!({"node": node, "error": error.to_string()})
-                }
-                Err(_) => {
-                    ready = false;
-                    serde_json::json!({"node": node, "error": "pool metadata health deadline elapsed"})
-                }
-            };
-            observations.push(observation);
-        }
-        let deadline_elapsed = Instant::now() >= deadline;
-        (
-            ready && !deadline_elapsed,
-            serde_json::json!({"deadline_elapsed": deadline_elapsed, "nodes": observations}),
-        )
-    }
-
-    fn pool_metadata_manifest_fixture() -> VersionShardCensus {
-        VersionShardCensus {
-            version_id: None,
-            has_xl_meta: true,
-            data_dir: Some(uuid::Uuid::from_u128(1).to_string()),
-            erasure_index: Some(1),
-            erasure_distribution: Some(vec![1, 2, 3, 4]),
-            data_blocks: Some(2),
-            parity_blocks: Some(2),
-            expected_part_numbers: Default::default(),
-            present_part_fingerprints: Default::default(),
-            inline_data_fingerprint: Some(crate::chaos::PartShardFingerprint {
-                size: 7,
-                sha256: sha256_hex(b"payload"),
-            }),
-        }
-    }
-
-    #[test]
-    fn pool_metadata_republication_allows_only_valid_data_dir_change() {
-        let expected = pool_metadata_manifest_fixture();
-        let mut actual = expected.clone();
-        actual.data_dir = Some(uuid::Uuid::from_u128(2).to_string());
-        assert!(pool_metadata_matches_republished_manifest(&actual, &expected));
-        assert!(
-            !actual.matches_manifest(&expected),
-            "ordinary object manifests must retain their original identity"
-        );
-        for invalid in [
-            None,
-            Some(String::new()),
-            Some("invalid".to_string()),
-            Some(uuid::Uuid::nil().to_string()),
-        ] {
-            let mut changed = actual.clone();
-            changed.data_dir = invalid.clone();
-            assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-            let mut changed_expected = expected.clone();
-            changed_expected.data_dir = invalid;
-            assert!(!pool_metadata_matches_republished_manifest(&actual, &changed_expected));
-        }
-        let mut changed = actual.clone();
-        changed
-            .inline_data_fingerprint
-            .as_mut()
-            .expect("fixture has inline payload")
-            .sha256 = sha256_hex(b"corrupt");
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-        let mut changed = actual.clone();
-        changed.erasure_index = Some(2);
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-        let mut changed = actual.clone();
-        changed.erasure_distribution = Some(vec![2, 1, 3, 4]);
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-        let mut changed = actual.clone();
-        changed.data_blocks = Some(1);
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-        let mut changed = actual.clone();
-        changed.parity_blocks = Some(3);
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-        let mut changed = actual.clone();
-        changed.version_id = Some(uuid::Uuid::from_u128(3).to_string());
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-        let mut changed = actual;
-        changed.has_xl_meta = false;
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-    }
-
-    #[test]
-    fn pool_metadata_republication_requires_exact_complete_part_fingerprints() {
-        let mut expected = pool_metadata_manifest_fixture();
-        expected.inline_data_fingerprint = None;
-        expected.expected_part_numbers.insert(1);
-        expected.present_part_fingerprints.insert(
-            1,
-            crate::chaos::PartShardFingerprint {
-                size: 7,
-                sha256: sha256_hex(b"payload"),
-            },
-        );
-        let mut actual = expected.clone();
-        actual.data_dir = Some(uuid::Uuid::from_u128(2).to_string());
-        assert!(pool_metadata_matches_republished_manifest(&actual, &expected));
-        let mut changed = actual.clone();
-        changed.present_part_fingerprints.remove(&1);
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-        let mut changed = actual;
-        changed
-            .present_part_fingerprints
-            .get_mut(&1)
-            .expect("fixture has part 1")
-            .sha256 = sha256_hex(b"corrupt");
-        assert!(!pool_metadata_matches_republished_manifest(&changed, &expected));
-    }
-
-    #[test]
-    fn pool_metadata_node_health_requires_explicit_metadata_and_both_quorums() {
-        let expected = serde_json::json!({"ready": true, "details": {
-            "poolMetadata": {"ready": true},
-            "storage": {"readQuorum": true, "writeQuorum": true}
-        }});
-        assert!(pool_metadata_node_health_is_ready(200, &expected));
-        assert!(!pool_metadata_node_health_is_ready(503, &expected));
-        assert!(!pool_metadata_node_health_is_ready(200, &serde_json::json!({"ready": true})));
-        for path in [
-            "/ready",
-            "/details/poolMetadata/ready",
-            "/details/storage/readQuorum",
-            "/details/storage/writeQuorum",
-        ] {
-            for value in [
-                serde_json::Value::Bool(false),
-                serde_json::Value::Null,
-                serde_json::json!("true"),
-            ] {
-                let mut changed = expected.clone();
-                *changed.pointer_mut(path).expect("fixture contains required health field") = value;
-                assert!(!pool_metadata_node_health_is_ready(200, &changed), "required health field {path}");
-            }
-        }
-    }
-
    #[derive(serde::Deserialize)]
    struct EvidenceBuild {
        sha256: String,
@@ -2422,7 +2232,6 @@ mod tests {
            .and_then(|value| value.parse::<u64>().ok())
            .unwrap_or(180);
        let heal_deadline = Instant::now() + Duration::from_secs(heal_timeout_secs);
-        let mut last_pool_metadata_readiness = serde_json::Value::Null;
        loop {
            if restart_recovery_admin_after_failure && !recovery_admin_task_restarted {
                let task_state = timeout(
@@ -2464,23 +2273,14 @@ mod tests {
                let outage_census = census_object_version_on_disk(&replaced_disk, bucket, &outage_key, None)?;
                let pool_metadata_matches = match &expected_pool_metadata {
                    Some(expected) => {
-                        let actual =
-                            census_object_version_on_disk(&replaced_disk, RUSTFS_META_BUCKET, POOL_METADATA_OBJECT, None)?;
-                        pool_metadata_matches_republished_manifest(&actual, expected)
+                        census_object_version_on_disk(&replaced_disk, RUSTFS_META_BUCKET, POOL_METADATA_OBJECT, None)?
+                            .matches_manifest(expected)
                    }
                    None => true,
                };
-                let pool_metadata_ready = if expected_pool_metadata.is_some() && pool_metadata_matches {
-                    let (ready, observation) = all_nodes_pool_metadata_readiness(&cluster, heal_deadline).await;
-                    last_pool_metadata_readiness = observation;
-                    ready
-                } else {
-                    expected_pool_metadata.is_none()
-                };
                if matching == expected_manifests.len()
                    && (!outage_target_manifest_required || outage_census.is_complete())
                    && pool_metadata_matches
-                    && pool_metadata_ready
                {
                    break;
                }
@@ -2490,15 +2290,6 @@ mod tests {
                let outage_census = census_object_version_on_disk(&replaced_disk, bucket, &outage_key, None)?;
                let pool_metadata =
                    census_object_version_on_disk(&replaced_disk, RUSTFS_META_BUCKET, POOL_METADATA_OBJECT, None)?;
-                // This post-deadline observation is diagnostic only. It cannot
-                // make an expired recovery attempt satisfy the original budget.
-                let pool_metadata_readiness = if expected_pool_metadata.is_some() {
-                    let (_, observation) =
-                        all_nodes_pool_metadata_readiness(&cluster, Instant::now() + Duration::from_secs(3)).await;
-                    serde_json::json!({"last_eligible_check": last_pool_metadata_readiness, "timeout_check": observation})
-                } else {
-                    serde_json::Value::Null
-                };
                let final_status = signed_admin_post(&status_url, None, &cluster.access_key, &cluster.secret_key)
                    .await
                    .unwrap_or_else(|err| format!("status request failed: {err}"));
@@ -2522,7 +2313,7 @@ mod tests {
                    Err(_) => "replacement status request exceeded 5s diagnostic budget".to_string(),
                };
                return Err(format!(
-                    "root heal did not recover after {interruption_kind} within {heal_timeout_secs}s: baseline={matching}/{}, outage={outage_census:?}, pool_metadata_expected={expected_pool_metadata:?}, pool_metadata={pool_metadata:?}, pool_metadata_readiness={pool_metadata_readiness}, status={final_status}, task_status={task_status}, pre_interrupt_status={pre_interrupt_status}, pre_heal_replacement={pre_heal_replacement}, pre_interrupt_replacement={pre_interrupt_replacement}, replacement_status={replacement_status}",
+                    "root heal did not recover after {interruption_kind} within {heal_timeout_secs}s: baseline={matching}/{}, outage={outage_census:?}, pool_metadata={pool_metadata:?}, status={final_status}, task_status={task_status}, pre_interrupt_status={pre_interrupt_status}, pre_heal_replacement={pre_heal_replacement}, pre_interrupt_replacement={pre_interrupt_replacement}, replacement_status={replacement_status}",
                    expected_manifests.len()
                )
                .into());
@@ -1129,14 +1129,12 @@ mod tests {
    /// and the marker plus the cursor tag.
    ///
    /// Bug Reference: backlog#1047
-    /// Earlier releases appended a `[rustfs_cache:...]` cursor tag to the last
-    /// returned key inside the V2 continuation token. The orchestration layer
-    /// passed that raw string to `forward_past`, so any key whose byte after the
-    /// shared stem sorts below `[` (0x5B) — `.`, `/`, `-`, digits, uppercase —
-    /// was silently dropped on the next page: with keys `a`, `a.txt`, `zz` and
-    /// max_keys=1, page 2 returned `zz` and `a.txt` was never listed. The token
-    /// is now base64 of the plain key, and this test keeps guarding the
-    /// continuation boundary.
+    /// The V2 continuation token appends a `[rustfs_cache:...]` cursor tag to the
+    /// last returned key. The orchestration layer passed that raw string to
+    /// `forward_past`, so any key whose byte after the shared stem sorts below
+    /// `[` (0x5B) — `.`, `/`, `-`, digits, uppercase — was silently dropped on
+    /// the next page: with keys `a`, `a.txt`, `zz` and max_keys=1, page 2
+    /// returned `zz` and `a.txt` was never listed.
    #[tokio::test]
    async fn test_list_objects_v2_continuation_keeps_keys_after_marker_stem() {
        init_logging();
@@ -19,19 +19,6 @@ use http::{Method, StatusCode};
 use tokio::time::{Duration, sleep, timeout};
 use tracing::{debug, info};

-/// A successful reporting response can still have unknown scanner usage.
-fn reported_quota_usage(response: &serde_json::Value) -> std::io::Result<Option<u64>> {
-    let value = response
-        .get("current_usage")
-        .ok_or_else(|| std::io::Error::new(std::io::ErrorKind::InvalidData, "quota response is missing current_usage"))?;
-    if value.is_null() {
-        return Ok(None);
-    }
-    value.as_u64().map(Some).ok_or_else(|| {
-        std::io::Error::new(std::io::ErrorKind::InvalidData, "quota current_usage is not an unsigned integer or null")
-    })
-}
-
 /// Test environment setup for quota tests
 pub struct QuotaTestEnv {
    pub env: RustFSTestEnvironment,
@@ -100,69 +87,35 @@ impl QuotaTestEnv {
        }
    }

-    async fn wait_for_usage_response(
-        &self,
-        method: Method,
-        path: &str,
-        body: Option<String>,
-        expected_usage: u64,
-    ) -> Result<serde_json::Value, Box<dyn std::error::Error + Send + Sync>> {
-        let convergence = async {
-            loop {
-                let (status, response) = admin_request(
-                    &self.env.url,
-                    method.clone(),
-                    path,
-                    body.clone(),
-                    &self.env.access_key,
-                    &self.env.secret_key,
-                )
-                .await?;
-                if status.is_success() {
-                    let response: serde_json::Value = serde_json::from_str(&response)?;
-                    if let Some(usage) = reported_quota_usage(&response)?
-                        && usage == expected_usage
-                    {
-                        return Ok::<_, Box<dyn std::error::Error + Send + Sync>>(response);
-                    }
-                } else if status != StatusCode::SERVICE_UNAVAILABLE {
-                    return Err(format!("quota usage request failed for {path}: {status} {response}").into());
-                }
-                sleep(Duration::from_millis(100)).await;
-            }
-        };
-        match timeout(Duration::from_secs(30), convergence).await {
-            Ok(result) => result,
-            Err(_) => Err(format!("quota usage did not converge to {expected_usage} for {path} within 30 seconds").into()),
+    pub async fn get_bucket_quota_stats(&self) -> Result<serde_json::Value, Box<dyn std::error::Error + Send + Sync>> {
+        let url = format!("{}/rustfs/admin/v3/quota-stats/{}", self.env.url, self.bucket_name);
+        let response = awscurl_get(&url, &self.env.access_key, &self.env.secret_key).await?;
+
+        if response.contains("error") {
+            Err(format!("Failed to get quota stats: {}", response).into())
+        } else {
+            Ok(serde_json::from_str(&response)?)
        }
    }

-    async fn wait_for_bucket_quota_stats(
-        &self,
-        bucket: &str,
-        expected_usage: u64,
-    ) -> Result<serde_json::Value, Box<dyn std::error::Error + Send + Sync>> {
-        self.wait_for_usage_response(Method::GET, &format!("/rustfs/admin/v3/quota-stats/{bucket}"), None, expected_usage)
-            .await
-    }
-
-    async fn wait_for_bucket_quota_check(
+    pub async fn check_bucket_quota(
        &self,
        operation_type: &str,
        operation_size: u64,
-        expected_usage: u64,
    ) -> Result<serde_json::Value, Box<dyn std::error::Error + Send + Sync>> {
+        let url = format!("{}/rustfs/admin/v3/quota-check/{}", self.env.url, self.bucket_name);
        let check_request = serde_json::json!({
            "operation_type": operation_type,
            "operation_size": operation_size
        });
-        self.wait_for_usage_response(
-            Method::POST,
-            &format!("/rustfs/admin/v3/quota-check/{}", self.bucket_name),
-            Some(check_request.to_string()),
-            expected_usage,
-        )
-        .await
+
+        let response = awscurl_post(&url, &check_request.to_string(), &self.env.access_key, &self.env.secret_key).await?;
+
+        if response.contains("error") {
+            Err(format!("Failed to check quota: {}", response).into())
+        } else {
+            Ok(serde_json::from_str(&response)?)
+        }
    }

    pub async fn upload_object(&self, key: &str, size_bytes: usize) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
@@ -192,9 +145,25 @@ impl QuotaTestEnv {
        }
    }

+    pub async fn get_bucket_usage(&self) -> Result<u64, Box<dyn std::error::Error + Send + Sync>> {
+        let stats = self.get_bucket_quota_stats().await?;
+        Ok(stats.get("current_usage").and_then(|v| v.as_u64()).unwrap_or(0))
+    }
+
    async fn wait_for_bucket_usage(&self, expected: u64) -> Result<u64, Box<dyn std::error::Error + Send + Sync>> {
-        let stats = self.wait_for_bucket_quota_stats(&self.bucket_name, expected).await?;
-        reported_quota_usage(&stats)?.ok_or_else(|| "converged quota usage is missing".into())
+        let convergence = async {
+            loop {
+                let usage = self.get_bucket_usage().await?;
+                if usage == expected {
+                    return Ok::<u64, Box<dyn std::error::Error + Send + Sync>>(usage);
+                }
+                sleep(Duration::from_millis(100)).await;
+            }
+        };
+        match timeout(Duration::from_secs(30), convergence).await {
+            Ok(result) => result,
+            Err(_) => Err(format!("bucket usage did not converge to {expected} bytes within 30 seconds").into()),
+        }
    }

    pub async fn set_bucket_quota_for(
@@ -202,6 +171,8 @@ impl QuotaTestEnv {
        bucket: &str,
        quota_bytes: u64,
    ) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+        self.wait_for_quota_usage_for(bucket).await?;
+
        let quota_path = format!("/rustfs/admin/v3/quota/{bucket}");
        let quota_config = serde_json::json!({
            "quota": quota_bytes,
@@ -235,6 +206,46 @@ impl QuotaTestEnv {
        }
    }

+    pub async fn wait_for_quota_usage_for(&self, bucket: &str) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+        let stats_path = format!("/rustfs/admin/v3/quota-stats/{bucket}");
+        let readiness = async {
+            loop {
+                let (status, response) =
+                    admin_request(&self.env.url, Method::GET, &stats_path, None, &self.env.access_key, &self.env.secret_key)
+                        .await?;
+                if status.is_success() {
+                    return Ok::<(), Box<dyn std::error::Error + Send + Sync>>(());
+                }
+                if status != StatusCode::SERVICE_UNAVAILABLE {
+                    return Err(format!("quota usage readiness failed for {bucket}: {status} {response}").into());
+                }
+                sleep(Duration::from_secs(1)).await;
+            }
+        };
+        match timeout(Duration::from_secs(30), readiness).await {
+            Ok(result) => result,
+            Err(_) => Err(format!("quota usage did not become authoritative for {bucket} within 30 seconds").into()),
+        }
+    }
+
+    /// Get bucket quota statistics for specific bucket
+    pub async fn get_bucket_quota_stats_for(
+        &self,
+        bucket: &str,
+    ) -> Result<serde_json::Value, Box<dyn std::error::Error + Send + Sync>> {
+        debug!("Getting quota stats for bucket: {}", bucket);
+
+        let url = format!("{}/rustfs/admin/v3/quota-stats/{}", self.env.url, bucket);
+        let response = awscurl_get(&url, &self.env.access_key, &self.env.secret_key).await?;
+
+        if response.contains("error") {
+            Err(format!("Failed to get quota stats: {}", response).into())
+        } else {
+            let stats: serde_json::Value = serde_json::from_str(&response)?;
+            Ok(stats)
+        }
+    }
+
    /// Upload an object to specific bucket
    pub async fn upload_object_to_bucket(
        &self,
@@ -259,132 +270,6 @@ impl QuotaTestEnv {
    }
 }

-#[cfg(test)]
-mod usage_response_tests {
-    use super::*;
-    use tokio::io::{AsyncReadExt, AsyncWriteExt};
-    use tokio::net::TcpListener;
-    use tokio::task::JoinSet;
-
-    #[test]
-    fn unknown_usage_is_not_zero() {
-        assert_eq!(
-            reported_quota_usage(&serde_json::json!({"current_usage": null})).expect("valid unknown usage"),
-            None
-        );
-        assert_eq!(
-            reported_quota_usage(&serde_json::json!({"current_usage": 0})).expect("known zero usage"),
-            Some(0)
-        );
-    }
-
-    #[test]
-    fn missing_or_invalid_usage_is_not_readiness() {
-        for response in [
-            serde_json::json!({}),
-            serde_json::json!({"current_usage": -1}),
-            serde_json::json!({"current_usage": "0"}),
-            serde_json::json!({"current_usage": 1.5}),
-            serde_json::json!({"current_usage": false}),
-        ] {
-            let error = reported_quota_usage(&response).expect_err("malformed usage must fail");
-            assert_eq!(error.kind(), std::io::ErrorKind::InvalidData);
-        }
-    }
-
-    async fn mock_environment(
-        responses: Vec<(StatusCode, &'static str)>,
-    ) -> Result<(QuotaTestEnv, JoinSet<()>), Box<dyn std::error::Error + Send + Sync>> {
-        let listener = TcpListener::bind((std::net::Ipv4Addr::LOCALHOST, 0)).await?;
-        let address = listener.local_addr()?;
-        let mut tasks = JoinSet::new();
-        tasks.spawn(async move {
-            for (status, body) in responses {
-                let (mut stream, _) = listener.accept().await.expect("accept quota reporting request");
-                let mut request = Vec::new();
-                while !request.windows(4).any(|part| part == b"\r\n\r\n") {
-                    let mut buffer = [0_u8; 1024];
-                    let read = stream.read(&mut buffer).await.expect("read reporting request");
-                    assert!(read > 0 && request.len() + read <= 8192, "bounded HTTP request headers");
-                    request.extend_from_slice(&buffer[..read]);
-                }
-                let response = format!(
-                    "HTTP/1.1 {} Test\r\nContent-Type: application/json\r\nContent-Length: {}\r\nConnection: close\r\n\r\n{}",
-                    status.as_u16(),
-                    body.len(),
-                    body
-                );
-                stream
-                    .write_all(response.as_bytes())
-                    .await
-                    .expect("write quota reporting response");
-                stream.shutdown().await.expect("close reporting response");
-            }
-        });
-        let mut env = RustFSTestEnvironment::new().await?;
-        env.url = format!("http://{address}");
-        let client = env.create_s3_client();
-        Ok((
-            QuotaTestEnv {
-                env,
-                client,
-                bucket_name: "quota-reporting-fixture".to_owned(),
-            },
-            tasks,
-        ))
-    }
-
-    #[tokio::test]
-    async fn reporting_waits_for_known_matching_usage_without_selecting_allowed()
-    -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-        let (env, mut tasks) = mock_environment(vec![
-            (StatusCode::SERVICE_UNAVAILABLE, "unavailable"),
-            (StatusCode::OK, r#"{"current_usage":null}"#),
-            (StatusCode::OK, r#"{"current_usage":1}"#),
-            (StatusCode::OK, r#"{"current_usage":0,"allowed":false}"#),
-        ])
-        .await?;
-        let response = env.wait_for_usage_response(Method::GET, "/reporting", None, 0).await?;
-        assert_eq!(response["current_usage"], 0);
-        assert_eq!(response["allowed"], false, "readiness must not select a desired admission outcome");
-        timeout(Duration::from_secs(1), tasks.join_next())
-            .await?
-            .expect("reporting mock task")
-            .expect("all responses consumed");
-        Ok(())
-    }
-
-    #[tokio::test]
-    async fn reporting_rejects_malformed_success_instead_of_retrying() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-        let (env, mut tasks) = mock_environment(vec![(StatusCode::OK, r#"{"current_usage":"unknown"}"#)]).await?;
-        let error = env
-            .wait_for_usage_response(Method::GET, "/reporting", None, 0)
-            .await
-            .expect_err("malformed usage must fail");
-        assert!(error.to_string().contains("not an unsigned integer or null"));
-        timeout(Duration::from_secs(1), tasks.join_next())
-            .await?
-            .expect("reporting mock task")
-            .expect("response consumed");
-        Ok(())
-    }
-
-    #[tokio::test]
-    async fn reporting_does_not_retry_authorization_failure() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-        let (env, mut tasks) = mock_environment(vec![(StatusCode::FORBIDDEN, "denied")]).await?;
-        let error = env
-            .wait_for_usage_response(Method::GET, "/reporting", None, 0)
-            .await
-            .expect_err("authorization error must fail");
-        assert!(error.to_string().contains("403"));
-        timeout(Duration::from_secs(1), tasks.join_next())
-            .await?
-            .expect("reporting mock task")
-            .expect("response consumed");
-        Ok(())
-    }
-}
-
 #[cfg(test)]
 mod integration_tests {
    use super::*;
@@ -597,7 +482,7 @@ mod integration_tests {
        env.upload_object("file2.txt", 256 * 1024).await?;

        // Check usage
-        let usage = env.wait_for_bucket_usage((512 + 256) * 1024).await?;
+        let usage = env.get_bucket_usage().await?;
        assert_eq!(usage, (512 + 256) * 1024);

        // Delete a file
@@ -632,7 +517,7 @@ mod integration_tests {
        env.upload_object("file2.txt", 512 * 1024).await?;

        // Get detailed quota statistics
-        let stats = env.wait_for_bucket_quota_stats(&env.bucket_name, (1024 + 512) * 1024).await?;
+        let stats = env.get_bucket_quota_stats().await?;

        assert_eq!(stats.get("bucket").unwrap().as_str().unwrap(), env.bucket_name);
        assert_eq!(stats.get("quota_limit").unwrap().as_u64().unwrap(), 2 * 1024 * 1024);
@@ -661,22 +546,22 @@ mod integration_tests {
        env.upload_object("existing_file.txt", 512 * 1024).await?;

        // Check if we can upload another 512KB (should succeed, exactly fill quota)
-        let check_result = env.wait_for_bucket_quota_check("PUT", 512 * 1024, 512 * 1024).await?;
+        let check_result = env.check_bucket_quota("PUT", 512 * 1024).await?;
        assert!(check_result.get("allowed").unwrap().as_bool().unwrap());
        assert_eq!(check_result.get("remaining_quota").unwrap().as_u64().unwrap(), 0);

        // Note: we haven't actually uploaded the second file yet, so current_usage is still 512KB
        // Check if we can upload 1KB (should succeed - we haven't used the full quota yet)
-        let check_result = env.wait_for_bucket_quota_check("PUT", 1024, 512 * 1024).await?;
+        let check_result = env.check_bucket_quota("PUT", 1024).await?;
        assert!(check_result.get("allowed").unwrap().as_bool().unwrap());
        assert_eq!(check_result.get("remaining_quota").unwrap().as_u64().unwrap(), 523264); // 511 * 1024

        // Check if we can upload 600KB (should fail - would exceed quota)
-        let check_result = env.wait_for_bucket_quota_check("PUT", 600 * 1024, 512 * 1024).await?;
+        let check_result = env.check_bucket_quota("PUT", 600 * 1024).await?;
        assert!(!check_result.get("allowed").unwrap().as_bool().unwrap());

        // Check delete operation (should always be allowed)
-        let check_result = env.wait_for_bucket_quota_check("DELETE", 512 * 1024, 512 * 1024).await?;
+        let check_result = env.check_bucket_quota("DELETE", 512 * 1024).await?;
        assert!(check_result.get("allowed").unwrap().as_bool().unwrap());

        env.cleanup_bucket().await?;
@@ -708,8 +593,8 @@ mod integration_tests {
        env.upload_object_to_bucket(&bucket2, "another_file.txt", 512 * 1024).await?;

        // Verify statistics are independent
-        let stats1 = env.wait_for_bucket_quota_stats(&bucket1, 1024 * 1024).await?;
-        let stats2 = env.wait_for_bucket_quota_stats(&bucket2, (1024 + 512) * 1024).await?;
+        let stats1 = env.get_bucket_quota_stats_for(&bucket1).await?;
+        let stats2 = env.get_bucket_quota_stats_for(&bucket2).await?;

        assert_eq!(stats1.get("current_usage").unwrap().as_u64().unwrap(), 1024 * 1024);
        assert_eq!(stats2.get("current_usage").unwrap().as_u64().unwrap(), (1024 + 512) * 1024);
@@ -770,6 +655,7 @@ mod integration_tests {
        let env = QuotaTestEnv::new().await?;

        env.create_bucket().await?;
+        env.wait_for_quota_usage_for(&env.bucket_name).await?;

        // Test 1: GET quota for bucket without quota config
        let url = format!("{}/rustfs/admin/v3/quota/{}", env.env.url, env.bucket_name);
@@ -541,6 +541,50 @@ impl NodeService for MinimalLockNodeService {
        Err(Status::unimplemented("lock-only test server"))
    }

+    async fn artifact_rename_data(
+        &self,
+        _request: Request<rustfs_protos::proto_gen::node_service::RenameDataRequest>,
+    ) -> Result<Response<rustfs_protos::proto_gen::node_service::RenameDataResponse>, Status> {
+        Err(Status::unimplemented("lock-only test server"))
+    }
+
+    async fn artifact_repair_rename_data(
+        &self,
+        _request: Request<rustfs_protos::proto_gen::node_service::ArtifactRepairRenameDataRequest>,
+    ) -> Result<Response<rustfs_protos::proto_gen::node_service::RenameDataResponse>, Status> {
+        Err(Status::unimplemented("lock-only test server"))
+    }
+
+    async fn artifact_repair_write_metadata(
+        &self,
+        _request: Request<rustfs_protos::proto_gen::node_service::ArtifactRepairWriteMetadataRequest>,
+    ) -> Result<Response<rustfs_protos::proto_gen::node_service::WriteMetadataResponse>, Status> {
+        Err(Status::unimplemented("lock-only test server"))
+    }
+
+    type InventoryArtifactAttemptStream =
+        Pin<Box<dyn Stream<Item = Result<rustfs_protos::proto_gen::node_service::ArtifactInventoryFrame, Status>> + Send>>;
+    async fn inventory_artifact_attempt(
+        &self,
+        _request: Request<rustfs_protos::proto_gen::node_service::ArtifactInventoryRequest>,
+    ) -> Result<Response<Self::InventoryArtifactAttemptStream>, Status> {
+        Err(Status::unimplemented("lock-only test server"))
+    }
+
+    async fn seal_artifact_attempt_repairs(
+        &self,
+        _request: Request<rustfs_protos::proto_gen::node_service::SealArtifactAttemptPutsRequest>,
+    ) -> Result<Response<rustfs_protos::proto_gen::node_service::SealArtifactAttemptPutsResponse>, Status> {
+        Err(Status::unimplemented("lock-only test server"))
+    }
+
+    async fn seal_artifact_attempt_puts(
+        &self,
+        _request: Request<rustfs_protos::proto_gen::node_service::SealArtifactAttemptPutsRequest>,
+    ) -> Result<Response<rustfs_protos::proto_gen::node_service::SealArtifactAttemptPutsResponse>, Status> {
+        Err(Status::unimplemented("lock-only test server"))
+    }
+
    async fn rename_data(
        &self,
        _request: Request<rustfs_protos::proto_gen::node_service::RenameDataRequest>,
@@ -548,20 +592,6 @@ impl NodeService for MinimalLockNodeService {
        Err(Status::unimplemented("lock-only test server"))
    }

-    async fn rename_multipart_data(
-        &self,
-        _request: Request<rustfs_protos::proto_gen::node_service::RenameDataRequest>,
-    ) -> Result<Response<rustfs_protos::proto_gen::node_service::RenameDataResponse>, Status> {
-        Err(Status::unimplemented("lock-only test server"))
-    }
-
-    async fn recover_multipart_source(
-        &self,
-        _request: Request<rustfs_protos::proto_gen::node_service::RecoverMultipartSourceRequest>,
-    ) -> Result<Response<rustfs_protos::proto_gen::node_service::RecoverMultipartSourceResponse>, Status> {
-        Err(Status::unimplemented("lock-only test server"))
-    }
-
    async fn rename_data_at_incarnation(
        &self,
        _request: Request<rustfs_protos::proto_gen::node_service::RenameDataRequest>,
@@ -576,25 +606,6 @@ impl NodeService for MinimalLockNodeService {
        Err(Status::unimplemented("lock-only test server"))
    }

-    async fn rename_data_with_pool_meta_cas(
-        &self,
-        _request: Request<rustfs_protos::proto_gen::node_service::RenameDataRequest>,
-    ) -> Result<Response<rustfs_protos::proto_gen::node_service::RenameDataResponse>, Status> {
-        Err(Status::unimplemented("lock-only test server"))
-    }
-    async fn undo_pool_meta_write(
-        &self,
-        _request: Request<rustfs_protos::proto_gen::node_service::DeleteVersionRequest>,
-    ) -> Result<Response<rustfs_protos::proto_gen::node_service::DeleteVersionResponse>, Status> {
-        Err(Status::unimplemented("lock-only test server"))
-    }
-    async fn pool_meta_native_recovery(
-        &self,
-        _request: Request<rustfs_protos::proto_gen::node_service::PoolMetaNativeRecoveryRequest>,
-    ) -> Result<Response<rustfs_protos::proto_gen::node_service::PoolMetaNativeRecoveryResponse>, Status> {
-        Err(Status::unimplemented("lock-only test server"))
-    }
-
    async fn make_volumes(
        &self,
        _request: Request<rustfs_protos::proto_gen::node_service::MakeVolumesRequest>,
@@ -15,16 +15,14 @@
 #[cfg(test)]
 pub(crate) use rustfs_ecstore::api::bucket::bucket_target_sys::BucketTargetSys;
 #[cfg(test)]
-pub(crate) const OBJECT_LOCK_TRACE_FILTER: &str = "info,rustfs_ecstore::object_lock_diag=trace";
-#[cfg(test)]
 pub(crate) use rustfs_ecstore::api::disk::{
-    DiskOption, Endpoint, RUSTFS_META_BUCKET, RUSTFS_META_MULTIPART_BUCKET, VolumeInfo, WalkDirOptions, new_disk,
+    DiskError, DiskOption, Endpoint, RUSTFS_META_BUCKET, VolumeInfo, WalkDirOptions, new_disk,
 };
 pub(crate) use rustfs_ecstore::api::rpc::{AuthenticatedChannel, TonicInterceptor, node_service_time_out_client_no_auth};
 #[cfg(test)]
 pub(crate) use rustfs_ecstore::api::rpc::{
    TONIC_RPC_PREFIX, gen_signature_headers, gen_tonic_replay_scope_headers, gen_tonic_signature_headers,
-    verify_tonic_boot_epoch_response,
+    set_tonic_canonical_body_digest, verify_tonic_boot_epoch_response,
 };
 #[cfg(test)]
 pub(crate) use rustfs_ecstore::api::rpc::{gen_tonic_signature_interceptor, node_service_time_out_client};
@@ -40,6 +38,11 @@ pub(crate) mod grpc_lock {
    pub(crate) use super::{AuthenticatedChannel, TonicInterceptor, node_service_time_out_client_no_auth};
 }

+#[cfg(test)]
+pub(crate) mod artifact_rpc {
+    pub(crate) use super::{DiskError, TONIC_RPC_PREFIX, gen_tonic_signature_headers, set_tonic_canonical_body_digest};
+}
+
 /// Signing/transport surface used by the cross-process internode RPC signature
 /// acceptance tests (backlog#1327). The signing helpers are what let a test mint
 /// the one legitimately signed request an on-path attacker is assumed to have
@@ -59,24 +62,5 @@ pub(crate) mod replication_extension {

 #[cfg(test)]
 pub(crate) mod upgrade_compatibility {
-    pub(crate) use super::{DiskOption, Endpoint, RUSTFS_META_MULTIPART_BUCKET, new_disk};
-}
-
-#[cfg(test)]
-pub(crate) mod multipart_rpc_delay {
-    pub(crate) use super::RUSTFS_META_MULTIPART_BUCKET;
-}
-
-#[cfg(test)]
-pub(crate) mod multipart_fence_acceptance {
-    pub(crate) use super::RUSTFS_META_MULTIPART_BUCKET;
-}
-
-#[cfg(test)]
-pub(crate) mod multipart_source_rpc {
-    pub(crate) use rustfs_ecstore::api::disk::{
-        MULTIPART_SOURCE_PROTOCOL_VERSION, MultipartAbortCertificate, MultipartAbortProof, MultipartAbortProofKind,
-        MultipartAbortRound, MultipartSourceOperation, MultipartSourcePhase, MultipartSourceRequest, MultipartSourceSnapshot,
-        PublicationIdentity, SourceGeneration, SourceGeometry, SourceLineage,
-    };
+    pub(crate) use super::{DiskOption, Endpoint, new_disk};
 }
@@ -21,7 +21,6 @@ use crate::on_demand_migration::common::{ODM_SERVER_ENV, OdmTestEnv, SeedObject,
 use crate::replication_extension_test::{
    LOOPBACK_REPLICATION_TARGET_ENV, ReplicationTargetOptions, put_bucket_replication, set_replication_target_with_options,
 };
-use crate::storage_api::upgrade_compatibility::RUSTFS_META_MULTIPART_BUCKET;
 use aws_sdk_s3::Client;
 use aws_sdk_s3::error::ProvideErrorMetadata;
 use aws_sdk_s3::primitives::ByteStream;
@@ -53,8 +52,6 @@ const SSE_MASTER_KEY: &str = "QkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkI=";
 const PLAIN_BUCKET: &str = "upgrade-plain-data";
 const VERSIONED_BUCKET: &str = "upgrade-versioned-data";
 const MIXED_BUCKET: &str = "upgrade-mixed-version-data";
-const PENDING_MULTIPART_BUCKET: &str = "upgrade-mpu-continuity";
-const PENDING_MULTIPART_KEY: &str = "pending/legacy-multipart.bin";
 const MIXED_NODE_COUNT: usize = 4;
 const UPGRADE_READINESS_BODY: &[u8] = b"upgrade write readiness";
 // Written by the "previous-seed" readiness probe through node 0 before any
@@ -304,27 +301,18 @@ async fn read_object(
    Ok((encryption, body))
 }

-struct PendingMultipart {
-    upload_id: String,
-    completed_parts: Vec<CompletedPart>,
-    part_sizes: Vec<i64>,
-}
-
-async fn stage_multipart(client: &Client, bucket: &str, key: &str, parts: &[Vec<u8>]) -> Result<PendingMultipart, BoxError> {
+async fn write_multipart(client: &Client, bucket: &str, key: &str, parts: &[Vec<u8>]) -> TestResult {
    let created = client.create_multipart_upload().bucket(bucket).key(key).send().await?;
-    let upload_id = created
-        .upload_id()
-        .ok_or("CreateMultipartUpload omitted upload ID")?
-        .to_owned();
+    let upload_id = created.upload_id().ok_or("CreateMultipartUpload omitted upload ID")?;
    let mut completed_parts = Vec::with_capacity(parts.len());
-    let mut part_sizes = Vec::with_capacity(parts.len());
+
    for (index, part) in parts.iter().enumerate() {
        let part_number = i32::try_from(index + 1)?;
        let uploaded = client
            .upload_part()
            .bucket(bucket)
            .key(key)
-            .upload_id(&upload_id)
+            .upload_id(upload_id)
            .part_number(part_number)
            .body(ByteStream::from(part.clone()))
            .send()
@@ -335,38 +323,16 @@ async fn stage_multipart(client: &Client, bucket: &str, key: &str, parts: &[Vec<
                .e_tag(uploaded.e_tag().ok_or("UploadPart omitted ETag")?)
                .build(),
        );
-        part_sizes.push(i64::try_from(part.len())?);
    }
-    Ok(PendingMultipart {
-        upload_id,
-        completed_parts,
-        part_sizes,
-    })
-}

-async fn complete_pending_multipart(
-    client: &Client,
-    bucket: &str,
-    key: &str,
-    pending: &PendingMultipart,
-) -> Result<aws_sdk_s3::operation::complete_multipart_upload::CompleteMultipartUploadOutput, BoxError> {
-    Ok(client
+    client
        .complete_multipart_upload()
        .bucket(bucket)
        .key(key)
-        .upload_id(&pending.upload_id)
-        .multipart_upload(
-            CompletedMultipartUpload::builder()
-                .set_parts(Some(pending.completed_parts.clone()))
-                .build(),
-        )
+        .upload_id(upload_id)
+        .multipart_upload(CompletedMultipartUpload::builder().set_parts(Some(completed_parts)).build())
        .send()
-        .await?)
-}
-
-async fn write_multipart(client: &Client, bucket: &str, key: &str, parts: &[Vec<u8>]) -> TestResult {
-    let pending = stage_multipart(client, bucket, key, parts).await?;
-    complete_pending_multipart(client, bucket, key, &pending).await?;
+        .await?;
    Ok(())
 }

@@ -413,330 +379,6 @@ async fn write_multipart_load(clients: &[Client], phase: &str) -> Result<Vec<Str
    Ok(keys)
 }

-async fn write_mixed_put_load(clients: &[Client], phase: &str) -> Result<Vec<String>, BoxError> {
-    let mut tasks = JoinSet::new();
-    for worker in 0..MULTIPART_WORKERS {
-        let node = worker % clients.len();
-        let client = clients[node].clone();
-        let phase = phase.to_owned();
-        tasks.spawn(async move {
-            let mut keys = Vec::with_capacity(MULTIPART_UPLOADS_PER_WORKER);
-            for upload in 0..MULTIPART_UPLOADS_PER_WORKER {
-                let key = format!("{phase}/put/{worker:02}/{upload:02}");
-                tokio::time::timeout(
-                    MIXED_MULTIPART_UPLOAD_TIMEOUT,
-                    client
-                        .put_object()
-                        .bucket(MIXED_BUCKET)
-                        .key(&key)
-                        .body(ByteStream::from(vec![u8::try_from(worker)?; 64 * 1024]))
-                        .send(),
-                )
-                .await
-                .map_err(|_| format!("node {node}: PUT {key} acknowledgement deadline exceeded"))??;
-                keys.push(key);
-            }
-            Ok::<_, BoxError>(keys)
-        });
-    }
-    let mut keys = Vec::with_capacity(MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER);
-    while let Some(result) = tasks.join_next().await {
-        keys.extend(result??);
-    }
-    Ok(keys)
-}
-
-async fn verify_load_bodies(clients: &[Client], phase: &str, operation: &str) -> TestResult {
-    for worker in 0..MULTIPART_WORKERS {
-        let reader = &clients[(worker + 1) % clients.len()];
-        for upload in 0..MULTIPART_UPLOADS_PER_WORKER {
-            let key = format!("{phase}/{operation}/{worker:02}/{upload:02}");
-            assert_eq!(
-                read_object(reader, MIXED_BUCKET, &key, None).await?.1,
-                vec![u8::try_from(worker)?; 64 * 1024],
-                "{phase}: acknowledged {key} body"
-            );
-        }
-    }
-    Ok(())
-}
-
-async fn exercise_homogeneous_multipart(cluster: &RustFSTestClusterEnvironment, phase: &str) -> TestResult {
-    let clients = cluster.create_all_clients()?;
-    wait_for_upgrade_write_readiness(&clients, MIXED_BUCKET, phase, LISTING_CONVERGENCE_TIMEOUT).await?;
-    wait_for_drive_readmission(&clients, MIXED_BUCKET, phase, DRIVE_READMISSION_TIMEOUT).await?;
-    let keys = match write_multipart_load(&clients, phase).await {
-        Ok(keys) => keys,
-        Err(error) => {
-            let log_dir = std::env::var_os("RUSTFS_E2E_LOG_DIR");
-            return observe_mixed_multipart_failure(cluster, phase, error, log_dir.as_deref().map(Path::new)).await;
-        }
-    };
-    assert_eq!(keys.len(), MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER);
-    verify_load_bodies(&clients, phase, "multipart").await?;
-    for (reader, client) in clients.iter().enumerate() {
-        wait_for_phase_listing(client, phase, keys.len(), &format!("homogeneous reader {reader}")).await?;
-    }
-    Ok(())
-}
-
-struct PendingSourceBytes {
-    root: PathBuf,
-    files: Vec<(PathBuf, Vec<u8>)>,
-}
-
-fn pending_source_bytes(
-    cluster: &RustFSTestClusterEnvironment,
-    pending: &PendingMultipart,
-) -> Result<Vec<PendingSourceBytes>, BoxError> {
-    let source_hash =
-        rustfs_utils::hex_sha256(format!("{PENDING_MULTIPART_BUCKET}/{PENDING_MULTIPART_KEY}").as_bytes(), str::to_owned);
-    let mut sources = Vec::new();
-    for volume in cluster.nodes.iter().flat_map(|node| &node.data_dirs) {
-        let hash_root = Path::new(volume).join(RUSTFS_META_MULTIPART_BUCKET).join(&source_hash);
-        let roots = std::fs::read_dir(&hash_root)?
-            .map(|entry| {
-                let entry = entry?;
-                Ok(entry.file_type()?.is_dir().then(|| entry.path()))
-            })
-            .collect::<Result<Vec<_>, std::io::Error>>()?
-            .into_iter()
-            .flatten()
-            .collect::<Vec<_>>();
-        if roots.is_empty() {
-            return Err(std::io::Error::new(std::io::ErrorKind::NotFound, "pending upload source has not settled").into());
-        }
-        assert_eq!(roots.len(), 1, "the dedicated key has exactly one real pending upload");
-        let root = roots.into_iter().next().ok_or("pending upload source missing")?;
-        let mut files = vec![(PathBuf::from("xl.meta"), std::fs::read(root.join("xl.meta"))?)];
-        let data_dirs = std::fs::read_dir(&root)?
-            .map(|entry| {
-                let entry = entry?;
-                Ok((entry.file_type()?.is_dir() && entry.path().join("part.1").is_file()).then(|| entry.path()))
-            })
-            .collect::<Result<Vec<_>, std::io::Error>>()?
-            .into_iter()
-            .flatten()
-            .collect::<Vec<_>>();
-        if data_dirs.is_empty() {
-            return Err(std::io::Error::new(std::io::ErrorKind::NotFound, "selected part publication has not settled").into());
-        }
-        assert_eq!(data_dirs.len(), 1, "the upload has one actual selected-part directory");
-        let data_dir = data_dirs.into_iter().next().ok_or("pending upload parts missing")?;
-        for part in &pending.completed_parts {
-            let number = part.part_number().ok_or("acknowledged part omitted its number")?;
-            for name in [format!("part.{number}"), format!("part.{number}.meta")] {
-                let path = data_dir.join(name);
-                files.push((path.strip_prefix(&root)?.to_owned(), std::fs::read(path)?));
-            }
-        }
-        sources.push(PendingSourceBytes { root, files });
-    }
-    assert_eq!(
-        sources.len(),
-        MIXED_NODE_COUNT,
-        "the controlled legacy fixture requires every physical source"
-    );
-    Ok(sources)
-}
-
-async fn wait_for_pending_source_bytes(
-    cluster: &RustFSTestClusterEnvironment,
-    pending: &PendingMultipart,
-) -> Result<Vec<PendingSourceBytes>, BoxError> {
-    let deadline = Instant::now() + DRIVE_READMISSION_TIMEOUT;
-    loop {
-        match pending_source_bytes(cluster, pending) {
-            Ok(sources) => return Ok(sources),
-            Err(error)
-                if error
-                    .downcast_ref::<std::io::Error>()
-                    .is_some_and(|error| error.kind() == std::io::ErrorKind::NotFound)
-                    && Instant::now() < deadline =>
-            {
-                sleep(Duration::from_millis(500)).await
-            }
-            Err(error) => return Err(error),
-        }
-    }
-}
-
-async fn assert_pending_parts(client: &Client, pending: &PendingMultipart) -> TestResult {
-    let listed = client
-        .list_parts()
-        .bucket(PENDING_MULTIPART_BUCKET)
-        .key(PENDING_MULTIPART_KEY)
-        .upload_id(&pending.upload_id)
-        .send()
-        .await?;
-    assert_eq!(listed.upload_id(), Some(pending.upload_id.as_str()));
-    assert_ne!(listed.is_truncated(), Some(true));
-    assert_eq!(listed.parts().len(), pending.completed_parts.len());
-    for ((actual, expected), expected_size) in listed.parts().iter().zip(&pending.completed_parts).zip(&pending.part_sizes) {
-        assert_eq!(actual.part_number(), expected.part_number());
-        assert_eq!(actual.e_tag(), expected.e_tag());
-        assert_eq!(actual.size(), Some(*expected_size));
-    }
-    Ok(())
-}
-
-async fn assert_mixed_pending_refusal(
-    cluster: &RustFSTestClusterEnvironment,
-    pending: &PendingMultipart,
-    sources: &[PendingSourceBytes],
-) -> TestResult {
-    let clients = cluster.create_all_clients()?;
-    assert_pending_parts(&clients[0], pending).await?;
-    let error = upgrade_probe_client(&clients[0])
-        .complete_multipart_upload()
-        .bucket(PENDING_MULTIPART_BUCKET)
-        .key(PENDING_MULTIPART_KEY)
-        .upload_id(&pending.upload_id)
-        .multipart_upload(
-            CompletedMultipartUpload::builder()
-                .set_parts(Some(pending.completed_parts.clone()))
-                .build(),
-        )
-        .send()
-        .await
-        .expect_err("one native participant cannot authorize a legacy MPU completion");
-    assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(503), "{error:?}");
-    assert_eq!(error.as_service_error().and_then(ProvideErrorMetadata::code), Some("ServiceUnavailable"));
-    for client in &clients {
-        assert_pending_parts(client, pending).await?;
-        let error = client
-            .get_object()
-            .bucket(PENDING_MULTIPART_BUCKET)
-            .key(PENDING_MULTIPART_KEY)
-            .send()
-            .await
-            .expect_err("the rejected Complete must not publish a target");
-        assert_eq!(error.as_service_error().and_then(ProvideErrorMetadata::code), Some("NoSuchKey"));
-    }
-    for source in sources {
-        for entry in std::fs::read_dir(&source.root)? {
-            assert!(
-                !entry?.file_name().to_string_lossy().starts_with(".mpu-"),
-                "the failed preflight must not upgrade one physical legacy source"
-            );
-        }
-        for (relative, expected) in &source.files {
-            let actual = std::fs::read(source.root.join(relative))?;
-            assert!(actual == *expected, "rejected Complete changed actual source {}", relative.display());
-        }
-    }
-    Ok(())
-}
-
-struct CompletedPendingMultipart {
-    version_id: String,
-    etag: String,
-    body: Vec<u8>,
-}
-
-async fn assert_resumed_multipart(clients: &[Client], completed: &CompletedPendingMultipart) -> TestResult {
-    for (node, client) in clients.iter().enumerate() {
-        let response = client
-            .get_object()
-            .bucket(PENDING_MULTIPART_BUCKET)
-            .key(PENDING_MULTIPART_KEY)
-            .version_id(&completed.version_id)
-            .send()
-            .await?;
-        assert_eq!(response.version_id(), Some(completed.version_id.as_str()), "reader {node}");
-        assert_eq!(response.e_tag(), Some(completed.etag.as_str()), "reader {node}");
-        assert_eq!(
-            response.body.collect().await?.into_bytes().as_ref(),
-            completed.body.as_slice(),
-            "reader {node}"
-        );
-        assert_eq!(
-            read_object(client, PENDING_MULTIPART_BUCKET, PENDING_MULTIPART_KEY, None)
-                .await?
-                .1,
-            completed.body
-        );
-        let versions = client
-            .list_object_versions()
-            .bucket(PENDING_MULTIPART_BUCKET)
-            .prefix(PENDING_MULTIPART_KEY)
-            .send()
-            .await?;
-        assert_eq!(versions.versions().len(), 1, "same-upload replay must not add a version");
-        assert_eq!(versions.versions()[0].version_id(), Some(completed.version_id.as_str()));
-        assert!(versions.delete_markers().is_empty());
-    }
-    Ok(())
-}
-
-async fn finish_pending_multipart(
-    clients: &[Client],
-    pending: &PendingMultipart,
-    body: Vec<u8>,
-) -> Result<CompletedPendingMultipart, BoxError> {
-    let complete = complete_pending_multipart(&clients[0], PENDING_MULTIPART_BUCKET, PENDING_MULTIPART_KEY, pending).await?;
-    let version_id = complete
-        .version_id()
-        .filter(|version| !version.is_empty() && *version != "null")
-        .ok_or("versioned legacy upload completion omitted a concrete version")?
-        .to_owned();
-    let etag = complete.e_tag().ok_or("CompleteMultipartUpload omitted ETag")?.to_owned();
-    let replay = complete_pending_multipart(&clients[0], PENDING_MULTIPART_BUCKET, PENDING_MULTIPART_KEY, pending).await?;
-    assert_eq!(replay.version_id(), Some(version_id.as_str()));
-    assert_eq!(replay.e_tag(), Some(etag.as_str()));
-    let completed = CompletedPendingMultipart { version_id, etag, body };
-    assert_resumed_multipart(clients, &completed).await?;
-    Ok(completed)
-}
-
-async fn wait_for_multipart_quiescence(cluster: &RustFSTestClusterEnvironment, sources: &[PendingSourceBytes]) -> TestResult {
-    let deadline = Instant::now() + LISTING_CONVERGENCE_TIMEOUT;
-    loop {
-        let pending_roots = sources.iter().filter(|source| source.root.exists()).count();
-        let mut native_controls = 0;
-        let mut remaining_upload_roots = 0;
-        for volume in cluster.nodes.iter().flat_map(|node| &node.data_dirs) {
-            let root = Path::new(volume).join(RUSTFS_META_MULTIPART_BUCKET);
-            if !root.exists() {
-                continue;
-            }
-            for entry in walkdir::WalkDir::new(root) {
-                let entry = match entry {
-                    Ok(entry) => entry,
-                    Err(error)
-                        if error
-                            .io_error()
-                            .is_some_and(|error| error.kind() == std::io::ErrorKind::NotFound) =>
-                    {
-                        native_controls += 1;
-                        continue;
-                    }
-                    Err(error) => return Err(error.into()),
-                };
-                // Every fixture upload lives at MPI/<SHA>/<upload>. A born-only
-                // source can contain just xl.meta and its data directory, with
-                // no .mpu-* record. Only empty SHA parents may survive rollback.
-                if entry.depth() == 2 || (entry.depth() == 1 && !entry.file_type().is_dir()) {
-                    remaining_upload_roots += 1;
-                }
-                if entry.file_name().to_string_lossy().starts_with(".mpu-") {
-                    native_controls += 1;
-                }
-            }
-        }
-        if pending_roots == 0 && remaining_upload_roots == 0 && native_controls == 0 {
-            return Ok(());
-        }
-        if Instant::now() >= deadline {
-            return Err(format!(
-                "downgrade requires settled native MPU state: {pending_roots} fixed pending roots, {remaining_upload_roots} inventoried upload roots, {native_controls} native controls"
-            )
-            .into());
-        }
-        sleep(Duration::from_millis(500)).await;
-    }
-}
-
 async fn mixed_multipart_before(
    deadline: Instant,
    node: usize,
@@ -983,11 +625,14 @@ async fn exercise_mixed_cluster(
        .await?;
    assert_eq!(read_object(current_client, MIXED_BUCKET, &previous_key, None).await?.1, previous_body);

-    // Native MPU mutations are operationally paused while RPC generations
-    // differ. Keep the same mixed traffic volume with ordinary PUT instead.
-    let written_keys = write_mixed_put_load(&clients, phase).await?;
-    let expected_count = written_keys.len() + 2;
-    verify_load_bodies(&clients, phase, "put").await?;
+    let multipart_keys = match write_multipart_load(&clients, phase).await {
+        Ok(keys) => keys,
+        Err(error) => {
+            let log_dir = std::env::var_os("RUSTFS_E2E_LOG_DIR");
+            return observe_mixed_multipart_failure(cluster, phase, error, log_dir.as_deref().map(Path::new)).await;
+        }
+    };
+    let expected_count = multipart_keys.len() + 2;
    for (label, client) in [("current", current_client), ("previous", previous_client)] {
        assert_eq!(
            read_object(client, MIXED_BUCKET, PREVIOUS_RELEASE_SEED_KEY, None).await?.1,
@@ -1003,9 +648,9 @@ async fn exercise_mixed_cluster(
        .await?;
    }

-    let last_put_key = format!("{phase}/put/{:02}/{:02}", MULTIPART_WORKERS - 1, MULTIPART_UPLOADS_PER_WORKER - 1);
+    let last_multipart_key = format!("{phase}/multipart/{:02}/{:02}", MULTIPART_WORKERS - 1, MULTIPART_UPLOADS_PER_WORKER - 1);
    assert_eq!(
-        read_object(previous_client, MIXED_BUCKET, &last_put_key, None).await?.1,
+        read_object(previous_client, MIXED_BUCKET, &last_multipart_key, None).await?.1,
        vec![u8::try_from(MULTIPART_WORKERS - 1)?; 64 * 1024]
    );

@@ -1145,20 +790,12 @@ fn previous_baseline_writers(clients: &[Client], restarted_node: usize) -> &[Cli
 }

 async fn prepare_previous_release_baseline(cluster: &mut RustFSTestClusterEnvironment, previous_binary: &Path) -> TestResult {
-    prepare_release_baseline(cluster, previous_binary, "previous").await
-}
-
-async fn prepare_release_baseline(
-    cluster: &mut RustFSTestClusterEnvironment,
-    previous_binary: &Path,
-    prefix: &str,
-) -> TestResult {
    let clients: Vec<_> = cluster.create_all_clients()?.iter().map(upgrade_probe_client).collect();
    // rc.5 can latch a non-elected node's write fence while its first startup
    // waits for pool metadata (#7473). First prove the elected writer can
    // persist data, then restart each old process once with three peers still
-    // readable. The same preparation is reused only after a quiescent homogeneous rollback.
-    wait_for_upgrade_write_readiness(&clients[..1], MIXED_BUCKET, &format!("{prefix}-seed"), LISTING_CONVERGENCE_TIMEOUT).await?;
+    // readable. This preparation ends before any current binary is started.
+    wait_for_upgrade_write_readiness(&clients[..1], MIXED_BUCKET, "previous-seed", LISTING_CONVERGENCE_TIMEOUT).await?;
    // A node that just came back is still replaying its startup traffic against
    // every peer. Killing the next node during that burst gives the fresh node
    // two failures in a row and it drops that peer's drive to Offline, where
@@ -1168,7 +805,7 @@ async fn prepare_release_baseline(
    for node in [1, 2, 3, 0] {
        cluster.stop_node(node)?;
        cluster.start_node_from_binary(node, previous_binary).await?;
-        let context = format!("{prefix}-restart-{node}");
+        let context = format!("previous-restart-{node}");
        wait_for_upgrade_write_readiness(
            std::slice::from_ref(&clients[node]),
            MIXED_BUCKET,
@@ -1185,17 +822,15 @@ async fn prepare_release_baseline(
        .await?;
    }

-    wait_for_upgrade_write_readiness(&clients, MIXED_BUCKET, &format!("{prefix}-baseline"), LISTING_CONVERGENCE_TIMEOUT).await?;
+    wait_for_upgrade_write_readiness(&clients, MIXED_BUCKET, "previous-baseline", LISTING_CONVERGENCE_TIMEOUT).await?;
    for (reader, client) in clients.iter().enumerate() {
        assert_eq!(
-            read_object(client, MIXED_BUCKET, &format!(".upgrade-readiness/{prefix}-seed/node-0"), None)
-                .await?
-                .1,
+            read_object(client, MIXED_BUCKET, PREVIOUS_RELEASE_SEED_KEY, None).await?.1,
            UPGRADE_READINESS_BODY,
            "previous-release node {reader} must retain the seed across its rolling restart"
        );
        for writer in 0..clients.len() {
-            let key = format!(".upgrade-readiness/{prefix}-baseline/node-{writer}");
+            let key = format!(".upgrade-readiness/previous-baseline/node-{writer}");
            assert_eq!(
                read_object(client, MIXED_BUCKET, &key, None).await?.1,
                UPGRADE_READINESS_BODY,
@@ -2248,21 +1883,10 @@ async fn rolling_upgrade_from_previous_release_preserves_mixed_version_contracts
    cluster.start_with_binary(&previous_binary).await?;
    cluster.create_test_bucket(MIXED_BUCKET).await?;
    prepare_previous_release_baseline(&mut cluster, &previous_binary).await?;
-    exercise_homogeneous_multipart(&cluster, "homogeneous-previous").await?;
-    cluster.create_test_bucket(PENDING_MULTIPART_BUCKET).await?;
-    let previous_clients = cluster.create_all_clients()?;
-    enable_versioning(&previous_clients[0], PENDING_MULTIPART_BUCKET).await?;
-    let pending_parts = vec![vec![0x63; 5 * 1024 * 1024], vec![0x7d; 4096]];
-    let pending = stage_multipart(&previous_clients[0], PENDING_MULTIPART_BUCKET, PENDING_MULTIPART_KEY, &pending_parts).await?;
-    let sources = wait_for_pending_source_bytes(&cluster, &pending).await?;
-    assert_pending_parts(&previous_clients[0], &pending).await?;

    cluster.stop_node(0)?;
    cluster.start_node_from_binary(0, &current_binary).await?;
    exercise_mixed_cluster(&cluster, "one-current-node", 0, 1).await?;
-    // One controlled out-of-policy attempt proves fail-closed behavior below
-    // native write quorum; positive MPU writers remain paused while mixed.
-    assert_mixed_pending_refusal(&cluster, &pending, &sources).await?;

    for (node_idx, phase) in [(1, "two-current-nodes"), (2, "one-previous-node")] {
        cluster.stop_node(node_idx)?;
@@ -2274,9 +1898,6 @@ async fn rolling_upgrade_from_previous_release_preserves_mixed_version_contracts
    cluster.start_node_from_binary(3, &current_binary).await?;
    let clients = cluster.create_all_clients()?;
    wait_for_drive_readmission(&clients, MIXED_BUCKET, "homogeneous-current", DRIVE_READMISSION_TIMEOUT).await?;
-    let completed_pending = finish_pending_multipart(&clients, &pending, pending_parts.concat()).await?;
-    exercise_homogeneous_multipart(&cluster, "homogeneous-current").await?;
-    verify_load_bodies(&clients, "homogeneous-previous", "multipart").await?;

    for (node_idx, client) in clients.iter().enumerate() {
        assert_eq!(
@@ -2295,6 +1916,47 @@ async fn rolling_upgrade_from_previous_release_preserves_mixed_version_contracts
        }
    }

+    if let Some(context) = evidence_context.as_ref() {
+        let phases = ["one-current-node", "two-current-nodes", "one-previous-node"];
+        let objects_per_phase = MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER + 2;
+        write_g09_evidence(
+            context,
+            "mixed_version_reader_evidence",
+            "mixed-version-reader",
+            &["old-writer-new-reader", "new-writer-old-reader"],
+            "upgrade_compatibility_test::rolling_upgrade_from_previous_release_preserves_mixed_version_contracts",
+            serde_json::json!({
+                "bucket": MIXED_BUCKET,
+                "phases": phases,
+                "objects_per_phase": objects_per_phase,
+                "assertions": [
+                    "current node reads objects written through previous-release client",
+                    "previous-release node reads objects written through current client",
+                    "all nodes list every mixed-version object after homogeneous-current convergence",
+                    "the previous-release seed survives the baseline restart and every upgrade phase"
+                ],
+            }),
+        )?;
+        write_g09_evidence(
+            context,
+            "mixed_version_writer_evidence",
+            "mixed-version-writer",
+            &["old-reader-new-writer", "new-reader-old-writer"],
+            "upgrade_compatibility_test::rolling_upgrade_from_previous_release_preserves_mixed_version_contracts",
+            serde_json::json!({
+                "bucket": MIXED_BUCKET,
+                "phases": phases,
+                "objects_per_phase": objects_per_phase,
+                "assertions": [
+                    "current writer publishes objects readable by previous-release node",
+                    "previous-release writer publishes objects readable by current node",
+                    "multipart writers continue at every individual node upgrade",
+                    "modern DELETE fails closed and preserves every byte while old peers remain"
+                ],
+            }),
+        )?;
+    }
+
    let clients = cluster.create_all_clients()?;
    wait_for_upgrade_write_readiness(&clients, MIXED_BUCKET, "all-current", LISTING_CONVERGENCE_TIMEOUT).await?;
    clients[0]
@@ -2318,115 +1980,6 @@ async fn rolling_upgrade_from_previous_release_preserves_mixed_version_contracts
        );
    }

-    wait_for_multipart_quiescence(&cluster, &sources).await?;
-    // No MPU mutation runs during a heterogeneous downgrade. All current
-    // callbacks and source controls settle before old binaries reopen volumes.
-    cluster.stop();
-    cluster.start_with_binary(&previous_binary).await?;
-    prepare_release_baseline(&mut cluster, &previous_binary, "rollback").await?;
-    let old_clients = cluster.create_all_clients()?;
-    assert_resumed_multipart(&old_clients, &completed_pending).await?;
-    for phase in ["homogeneous-previous", "homogeneous-current"] {
-        verify_load_bodies(&old_clients, phase, "multipart").await?;
-        for client in &old_clients {
-            wait_for_phase_listing(
-                client,
-                phase,
-                MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER,
-                "previous reader after rollback",
-            )
-            .await?;
-        }
-    }
-    for phase in ["one-current-node", "two-current-nodes", "one-previous-node"] {
-        verify_load_bodies(&old_clients, phase, "put").await?;
-        for client in &old_clients {
-            wait_for_phase_listing(
-                client,
-                phase,
-                MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER + 2,
-                "previous reader after rollback",
-            )
-            .await?;
-            for (key, body) in [
-                ("written-by-current", format!("{phase}: current RustFS build")),
-                ("written-by-previous", format!("{phase}: previous RustFS release")),
-            ] {
-                assert_eq!(
-                    read_object(client, MIXED_BUCKET, &format!("{phase}/{key}"), None).await?.1,
-                    body.as_bytes()
-                );
-            }
-        }
-    }
-    for (node, client) in old_clients.iter().enumerate() {
-        let error = client
-            .get_object()
-            .bucket(MIXED_BUCKET)
-            .key(PREVIOUS_RELEASE_SEED_KEY)
-            .send()
-            .await
-            .expect_err("current DELETE must remain visible to previous readers after rollback");
-        assert_eq!(
-            error.as_service_error().and_then(ProvideErrorMetadata::code),
-            Some("NoSuchKey"),
-            "reader {node}"
-        );
-    }
-    exercise_homogeneous_multipart(&cluster, "homogeneous-rollback").await?;
-
-    if let Some(context) = evidence_context.as_ref() {
-        let phases = ["one-current-node", "two-current-nodes", "one-previous-node"];
-        let objects_per_phase = MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER + 2;
-        write_g09_evidence(
-            context,
-            "mixed_version_reader_evidence",
-            "mixed-version-reader",
-            &["old-writer-new-reader", "new-writer-old-reader"],
-            "upgrade_compatibility_test::rolling_upgrade_from_previous_release_preserves_mixed_version_contracts",
-            serde_json::json!({
-                "bucket": MIXED_BUCKET,
-                "phases": phases,
-                "objects_per_phase": objects_per_phase,
-                "mixed_load": "plain-put",
-                "homogeneous_multipart_phases": ["homogeneous-previous", "homogeneous-current", "homogeneous-rollback"],
-                "multipart_objects_per_homogeneous_phase": MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER,
-                "assertions": [
-                    "current node reads objects written through previous-release client",
-                    "previous-release node reads objects written through current client",
-                    "all nodes list every mixed-version object after homogeneous-current convergence",
-                    "the previous-release seed survives the baseline restart and every upgrade phase",
-                    "previous readers read every current-native MPU body after quiescent rollback",
-                    "same legacy upload resumes with identical body, ETag and version after full upgrade"
-                ],
-            }),
-        )?;
-        write_g09_evidence(
-            context,
-            "mixed_version_writer_evidence",
-            "mixed-version-writer",
-            &["old-reader-new-writer", "new-reader-old-writer"],
-            "upgrade_compatibility_test::rolling_upgrade_from_previous_release_preserves_mixed_version_contracts",
-            serde_json::json!({
-                "bucket": MIXED_BUCKET,
-                "phases": phases,
-                "objects_per_phase": objects_per_phase,
-                "mixed_load": "plain-put",
-                "homogeneous_multipart_phases": ["homogeneous-previous", "homogeneous-current", "homogeneous-rollback"],
-                "multipart_objects_per_homogeneous_phase": MULTIPART_WORKERS * MULTIPART_UPLOADS_PER_WORKER,
-                "assertions": [
-                    "current writer publishes objects readable by previous-release node",
-                    "previous-release writer publishes objects readable by current node",
-                    "mixed phases retain 16x16 plain PUT writers while positive multipart writers are paused",
-                    "16x16 multipart load runs in homogeneous previous, current and rollback phases",
-                    "one-current-node Complete returns typed 503 and preserves actual source authority and parts",
-                    "the same legacy upload completes and replays once fully upgraded without adding a version",
-                    "modern DELETE fails closed and preserves every byte while old peers remain"
-                ],
-            }),
-        )?;
-    }
-
    Ok(())
 }

@@ -33,6 +33,11 @@ workspace = true
 default = []
 diagnostic-read-version-caller = ["rustfs-io-metrics/diagnostic-read-version-caller"]
 gcs = ["dep:google-cloud-storage", "dep:google-cloud-auth"]
+# Compiles the controlled list-objects namespace-journal chaos injector into a
+# production binary (it is always available to tests). Off by default so the
+# RUSTFS_LIST_OBJECTS_NAMESPACE_JOURNAL_CHAOS_* env vars cannot rewrite journal
+# state in a stock build (backlog#1832).
+list-chaos = []
 rio-v2 = ["dep:rustfs-rio-v2"]
 hotpath = [
    "hotpath/hotpath",
@@ -382,6 +382,43 @@ pub mod config {
            with_config_object_read_lock, with_config_object_write_lock, with_server_config_read_lock,
            with_server_config_write_lock,
        };
+
+        /// Observe persisted config bytes and their reader-associated metadata within a byte limit.
+        pub async fn read_config_observation(
+            api: std::sync::Arc<crate::store::ECStore>,
+            file: &str,
+            max_bytes: usize,
+        ) -> crate::error::Result<(Vec<u8>, crate::object_api::ObjectInfo)> {
+            crate::config::com::read_config_observation(api, file, max_bytes).await
+        }
+
+        /// Observe bounded config bytes while the caller retains the object's write owner.
+        pub async fn read_config_observation_no_lock(
+            api: std::sync::Arc<crate::store::ECStore>,
+            file: &str,
+            max_bytes: usize,
+            guard: &crate::object_api::WriteCommitGuard,
+        ) -> crate::error::Result<(Vec<u8>, crate::object_api::ObjectInfo)> {
+            crate::config::com::read_config_observation_no_lock(api, file, max_bytes, guard).await
+        }
+
+        /// Read config bytes and metadata without treating an empty payload as absent.
+        pub async fn read_config_preserve_empty_with_metadata_opts(
+            api: std::sync::Arc<crate::store::ECStore>,
+            file: &str,
+            opts: &crate::object_api::ObjectOptions,
+        ) -> crate::error::Result<(Vec<u8>, crate::object_api::ObjectInfo)> {
+            crate::config::com::read_config_preserve_empty_with_metadata_opts(api, file, opts).await
+        }
+
+        pub async fn read_config_limited_preserve_empty_with_metadata_opts(
+            api: std::sync::Arc<crate::store::ECStore>,
+            file: &str,
+            opts: &crate::object_api::ObjectOptions,
+            max_bytes: usize,
+        ) -> crate::error::Result<(Vec<u8>, crate::object_api::ObjectInfo)> {
+            crate::config::com::read_config_limited_preserve_empty_with_metadata_opts(api, file, opts, max_bytes).await
+        }
    }

    pub mod storageclass {
@@ -429,31 +466,21 @@ pub mod data_usage {
 pub mod disk {
    pub use crate::disk::disk_store::get_object_disk_read_timeout;
    pub use crate::disk::local::{ReplacementExecutionLease, ScanGuard};
-    #[cfg(feature = "test-util")]
-    pub use crate::disk::local::{local_durability_modes, set_local_rename_data_fail_after_metadata_commit};
-    pub use crate::disk::multipart_source::{
-        MULTIPART_SOURCE_PROTOCOL_VERSION, MultipartAbortCertificate, MultipartAbortProof, MultipartAbortProofKind,
-        MultipartAbortRound, MultipartSourceOperation, MultipartSourcePhase, MultipartSourceRequest, MultipartSourceResponse,
-        MultipartSourceSnapshot, PublicationIdentity, SourceGeneration, SourceGeometry, SourceLineage, capture_source_condition,
-        require_source_condition, strip_native_controls,
-    };
-    #[cfg(all(feature = "test-util", unix))]
-    pub use crate::disk::os::set_local_dir_fsync_failure;
    #[cfg(all(feature = "test-util", not(windows)))]
    pub use crate::disk::os::{LocalPublicationPause, LocalPublicationStage};
+    pub use crate::disk::{ArtifactInventoryFrame, ArtifactInventoryVersion};
    pub use crate::disk::{
        BATCH_READ_VERSION_MAX_ITEMS, BUCKET_META_PREFIX, BatchReadVersionItem, BatchReadVersionReq, BatchReadVersionResp,
        CheckPartsResp, ConditionalFileUpdate, CurrentDeleteGeneration, CurrentDeleteTransition,
        DELETE_RECOVERY_PROTOCOL_VERSION, DeleteOptions, DeleteRecoveryAction, DeleteRecoveryCursor, DeleteRecoveryDigest,
        DeleteRecoveryInspection, DeleteRecoveryPage, DeleteRecoveryRpcOperation, DeleteRecoveryRpcReply, DeleteRecoveryState,
        Disk, DiskAPI, DiskInfo, DiskInfoOptions, DiskLocation, DiskOption, DiskStore, FileInfoVersions, FileReader, FileWriter,
-        GuardedDeleteVersionsPayload, GuardedFileInfoVersions, HEALING_MARKER_PATH, NsScannerOpenRequest, OldCurrentSize,
-        POOL_META_NATIVE_CAS_METADATA_SUFFIX, PartTransactionAction, PoolMetaNativeBackup, PoolMetaNativeInspection,
-        PoolMetaNativeObject, PoolMetaNativeRecoveryRequest, PoolMetaNativeRecoveryResponse,
-        QUOTA_MUTATION_FENCE_METADATA_SUFFIX, RUSTFS_META_BUCKET, RUSTFS_META_MULTIPART_BUCKET, RUSTFS_META_TMP_BUCKET,
-        ReadMultipleReq, ReadMultipleResp, ReadOptions, RenameDataResp, STORAGE_FORMAT_FILE, SnapshotLeaseToken,
-        UpdateMetadataOpts, VolumeInfo, WalkDirOptions, is_quota_mutation_fence_path, new_disk,
-        validate_batch_read_version_item_count,
+        GuardedDeleteVersionsPayload, GuardedFileInfoVersions, HEALING_MARKER_PATH, LegacyFileStream, LegacyFileWrite,
+        LegacyMetadataWrite, LegacyPartMutation, LegacyPartOperation, LegacyPathDelete, LegacyPathDeleteOperation,
+        LegacyRenameData, LegacyRenameFile, NsScannerOpenRequest, OldCurrentSize, PartTransactionAction,
+        QUOTA_MUTATION_FENCE_METADATA_SUFFIX, RUSTFS_META_BUCKET, ReadMultipleReq, ReadMultipleResp, ReadOptions, RenameDataResp,
+        STORAGE_FORMAT_FILE, SnapshotLeaseToken, UpdateMetadataOpts, VolumeInfo, WalkDirOptions, is_quota_mutation_fence_path,
+        new_disk, validate_batch_read_version_item_count,
    };
    pub use bytes::Bytes;
    pub use endpoint::Endpoint;
@@ -526,16 +553,13 @@ pub mod metrics {
 pub mod notification {
    pub use crate::services::notification_sys::{
        ClusterTierDailyStats, CrossPoolFenceFleetProofToken, IlmRecoveryExportFleetProofToken,
-        LegacyTransitionStateReconcileFleetProofToken, MrfLifecycleWriterFleetProofToken, NotificationPeerErr, NotificationSys,
-        ScannerPublicationLeaseGrant, acquire_cross_pool_fence_fleet_proof, acquire_ilm_recovery_export_fleet_proof,
-        acquire_legacy_transition_state_reconcile_fleet_proof, acquire_mrf_lifecycle_writer_fleet_proof,
-        configured_fleet_topology_fingerprint, cross_pool_fence_fleet_proof_matches, get_global_notification_sys,
-        ilm_recovery_export_fleet_proof_matches, ilm_recovery_export_local_process_epoch,
-        ilm_recovery_export_member_epochs_sha256, ilm_recovery_export_topology_generation,
-        legacy_transition_state_reconcile_fleet_proof_matches, mrf_lifecycle_reader_local_process_epoch,
-        mrf_lifecycle_writer_fleet_proof_current, mrf_lifecycle_writer_fleet_proof_matches, new_global_notification_sys,
-        scanner_peer_transport_error_message_is_retryable, start_remote_version_state_fleet_probe,
-        with_mrf_lifecycle_writer_fleet_proof,
+        LegacyTransitionStateReconcileFleetProofToken, NotificationPeerErr, NotificationSys, ScannerPublicationLeaseGrant,
+        acquire_cross_pool_fence_fleet_proof, acquire_ilm_recovery_export_fleet_proof,
+        acquire_legacy_transition_state_reconcile_fleet_proof, configured_fleet_topology_fingerprint,
+        cross_pool_fence_fleet_proof_matches, get_global_notification_sys, ilm_recovery_export_fleet_proof_matches,
+        ilm_recovery_export_local_process_epoch, ilm_recovery_export_member_epochs_sha256,
+        ilm_recovery_export_topology_generation, legacy_transition_state_reconcile_fleet_proof_matches,
+        new_global_notification_sys, scanner_peer_transport_error_message_is_retryable, start_remote_version_state_fleet_probe,
    };
    #[cfg(any(test, feature = "test-util"))]
    pub use crate::services::notification_sys::{
@@ -651,6 +675,7 @@ pub mod store_list {
 }

 pub mod storage {
+    pub use crate::bucket::artifact::inventory::ArtifactAttemptInventoryFrame;
    pub use crate::core::pools::{HealLifecycleExpiryContext, POOL_META_NAME};
    pub use crate::store::HealWalkVersion;
    pub use crate::store::{
@@ -0,0 +1,120 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+use super::*;
+use crate::bucket::metadata::BUCKET_INCARNATION_FILE;
+use crate::config::com::read_config_observation;
+use crate::object_api::WriteCompletion;
+
+impl ECStore {
+    /// Permanently retain this managed bucket's versions for historical restores.
+    /// Lifecycle WRITE drains earlier exact deletes. The detached owner keeps
+    /// lifecycle -> metadata transaction locks until every metadata write drains.
+    pub async fn retain_artifact_backups(self: Arc<Self>, bucket: &str, incarnation: Uuid, base_prefix: &str) -> Result<()> {
+        let bucket = bucket.to_owned();
+        let base_prefix = base_prefix.to_owned();
+        let ctx = Arc::clone(&self.ctx);
+        ctx.run_detached_mutation(async move {
+            require_put_seal_topology(&self).await?;
+            if self.ctx.lock_manager().is_disabled() {
+                return Err(Error::other("artifact backup retention requires namespace locking"));
+            }
+            let lifecycle = self.acquire_bucket_lifecycle_write_lock(&bucket).await?;
+            let transaction = metadata_sys::acquire_bucket_metadata_transaction_lock_in(&self.ctx, &bucket).await?;
+            let mut metadata = self.backup_retention_metadata(&bucket, incarnation, &base_prefix).await?;
+            let check = || {
+                if lifecycle.is_lock_lost() || transaction.is_lock_lost() {
+                    Err(Error::other("artifact backup retention fence was lost"))
+                } else {
+                    Ok(())
+                }
+            };
+            check()?;
+            // Even an idempotent retry rewrites with TailDrained: an earlier
+            // interrupted call may have reached only some metadata replicas.
+            metadata.artifact_backup_retained = true;
+            let mut opts = ObjectOptions {
+                max_parity: true,
+                write_completion: WriteCompletion::TailDrained,
+                ..Default::default()
+            };
+            opts.add_bucket_lifecycle_lock_guard(&lifecycle);
+            opts.add_namespace_lock_guard(&transaction);
+            metadata.save_with_store_options(self.clone(), &opts).await?;
+            check()?;
+            let sys = metadata_sys::require_bucket_metadata_sys_in(&self.ctx)?;
+            let sys = sys.read().await.clone();
+            sys.set_validated(metadata).await?;
+            check()
+        })
+        .await
+        .map_err(|_| Error::other("artifact backup retention owner failed"))?
+    }
+
+    /// Observe the immutable bucket identity and retention in one locked read.
+    pub async fn inspect_artifact_backup_retention(&self, bucket: &str, incarnation: Uuid, base_prefix: &str) -> Result<bool> {
+        require_put_seal_topology(self).await?;
+        if self.ctx.lock_manager().is_disabled() {
+            return Err(Error::other("artifact backup retention requires namespace locking"));
+        }
+        let lifecycle = self.acquire_bucket_lifecycle_read_lock(bucket).await?;
+        let metadata = self.backup_retention_metadata(bucket, incarnation, base_prefix).await?;
+        if lifecycle.is_lock_lost() {
+            return Err(Error::other("artifact backup retention observation fence was lost"));
+        }
+        Ok(metadata.artifact_backup_retained)
+    }
+
+    async fn backup_retention_metadata(&self, bucket: &str, incarnation: Uuid, base_prefix: &str) -> Result<BucketMetadata> {
+        if incarnation.is_nil() || !crate::storage_api_contracts::bucket::valid_artifact_base_prefix(base_prefix) {
+            return Err(Error::other("artifact backup retention identity is invalid"));
+        }
+        let mut metadata = self.read_backup_retention_metadata(bucket).await?;
+        let store = metadata_sys::object_store_in(&self.ctx).await?;
+        let (sidecar, _) =
+            read_config_observation(store, &format!("{BUCKET_META_PREFIX}/{bucket}/{BUCKET_INCARNATION_FILE}"), 16).await?;
+        metadata.parse_all_configs()?;
+        if metadata.bucket_incarnation_id != incarnation
+            || Uuid::from_slice(&sidecar).ok() != Some(incarnation)
+            || metadata.artifact_base_prefix.as_deref() != Some(base_prefix)
+            || !metadata.bucket_creation_committed
+            || !metadata.versioning_config.as_ref().is_some_and(|versioning| {
+                versioning.enabled()
+                    && !versioning.exclude_folders.unwrap_or(false)
+                    && versioning.excluded_prefixes.as_ref().is_none_or(Vec::is_empty)
+            })
+        {
+            return Err(Error::other("artifact backup retention identity mismatch"));
+        }
+        metadata.bucket_incarnation_sidecar = true;
+        Ok(metadata)
+    }
+
+    /// Caller must hold the bucket lifecycle fence. An unreadable or missing
+    /// record cannot prove that historical backup protection was never enabled.
+    pub(crate) async fn require_no_artifact_backup_retention(&self, bucket: &str) -> Result<()> {
+        if self.read_backup_retention_metadata(bucket).await?.artifact_backup_retained {
+            return Err(Error::other("artifact versions are retained for backups"));
+        }
+        Ok(())
+    }
+
+    async fn read_backup_retention_metadata(&self, bucket: &str) -> Result<BucketMetadata> {
+        if bucket.is_empty()
+            || super::super::utils::has_bad_path_component(bucket)
+            || super::super::utils::is_meta_bucketname(bucket)
+        {
+            return Err(Error::other("artifact backup retention bucket is invalid"));
+        }
+        let store = metadata_sys::object_store_in(&self.ctx).await?;
+        if store.id != self.id {
+            return Err(Error::other("artifact backup retention belongs to another store"));
+        }
+        let (bytes, _) = read_config_observation(store, &BucketMetadata::new(bucket).save_file_path(), 64 * 1024 * 1024).await?;
+        let metadata = BucketMetadata::decode_file(&bytes)?;
+        if metadata.name != bucket {
+            return Err(Error::other("artifact backup retention bucket mismatch"));
+        }
+        Ok(metadata)
+    }
+}
@@ -0,0 +1,154 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+use super::*;
+use crate::storage_api_contracts::object::ObjectOperations as _;
+
+/// In-process authority for exactly one drained managed version. No caller can
+/// construct this capability or serialize it into a disk/RPC request.
+#[doc(hidden)]
+pub struct ArtifactDeleteTarget {
+    store: Uuid,
+    record: ArtifactVersionRetirementRecord,
+    lifecycle: Arc<rustfs_lock::NamespaceLockGuard>,
+    attempt: WriteCommitGuard,
+    repair: WriteCommitGuard,
+}
+
+impl ArtifactDeleteTarget {
+    fn check_live(&self) -> Result<()> {
+        if self.lifecycle.is_lock_lost() || self.attempt.is_lock_lost() || self.repair.is_lock_lost() {
+            return Err(Error::other("artifact exact delete owned fence was lost"));
+        }
+        Ok(())
+    }
+
+    pub(crate) fn lifecycle(&self) -> Arc<rustfs_lock::NamespaceLockGuard> {
+        Arc::clone(&self.lifecycle)
+    }
+
+    pub(crate) fn validate(&self, store: &ECStore, bucket: &str, object: &str, opts: &ObjectOptions) -> Result<()> {
+        if self.store != store.id
+            || bucket != self.record.bucket
+            || rustfs_utils::path::encode_dir_object(object) != self.record.object
+            || opts.expected_bucket_incarnation_id != Some(self.record.incarnation_id)
+            || opts.version_id.as_deref() != Some(self.record.version_id.to_string().as_str())
+            || !opts.versioned
+            || opts.version_suspended
+            || opts.delete_prefix
+            || opts.delete_marker
+            || opts.data_movement
+            || opts.lifecycle_delete_all.is_some()
+            || self.lifecycle.is_lock_lost()
+            || self.attempt.is_lock_lost()
+            || self.repair.is_lock_lost()
+        {
+            return Err(Error::other("artifact exact delete target or owned fence mismatch"));
+        }
+        Ok(())
+    }
+}
+
+impl ECStore {
+    /// Read-only capability observation; each mutation revalidates the topology.
+    pub async fn supports_artifact_exact_delete(&self) -> bool {
+        require_local_put_seal_topology(self).await.is_ok() && !self.ctx.lock_manager().is_disabled()
+    }
+
+    /// Delete an exact version in a fully sealed attempt. This authenticates the
+    /// storage identity and drains writers; the caller still owns GC eligibility
+    /// and cleanup IAM. Distributed receiver deletion is not yet supported.
+    pub async fn delete_artifact_object_version(
+        self: Arc<Self>,
+        bucket: &str,
+        expected_incarnation: Uuid,
+        attempt_prefix: &str,
+        object: &str,
+        version: Uuid,
+    ) -> Result<()> {
+        require_local_put_seal_topology(&self).await?;
+        if self.ctx.lock_manager().is_disabled() {
+            return Err(Error::other("artifact exact deletion requires namespace locking"));
+        }
+        let lifecycle = Arc::new(self.acquire_bucket_lifecycle_read_lock(bucket).await?);
+        self.require_no_artifact_backup_retention(bucket).await?;
+        let put = self
+            .inventory_artifact_record(bucket, expected_incarnation, attempt_prefix)
+            .await?;
+        let repair = ArtifactRepairSealRecord::new(&put);
+        let record = ArtifactVersionRetirementRecord::new(&put, object, version)?;
+        let object = object.to_owned();
+        let store = Arc::clone(&self);
+        // Lifecycle -> attempt -> repair seal -> metadata transaction -> object.
+        // The spawned owner, and the disk deletion tail's typed capability, keep
+        // these locks after cancellation of the HTTP caller.
+        with_config_object_write_lock(self, put.path(), move |attempt| async move {
+            if !put.exists(Arc::clone(&store), &attempt).await? {
+                return Err(Error::other("artifact exact deletion requires sealed PUTs"));
+            }
+            let lock = store.new_ns_lock(RUSTFS_META_BUCKET, &repair.path()).await?;
+            let repair_owner = WriteCommitGuard::acquire(&lock, get_lock_acquire_timeout()).await?;
+            if !repair.exists(Arc::clone(&store), &repair_owner).await? {
+                return Err(Error::other("artifact exact deletion requires sealed repairs"));
+            }
+            let receivers = store.capture_artifact_receivers().await?;
+            store
+                .close_artifact_receiver_snapshot(&put, crate::disk::local::ArtifactLeaseDomain::Put, &receivers)
+                .await?;
+            store
+                .close_artifact_receiver_snapshot(&put, crate::disk::local::ArtifactLeaseDomain::Repair, &receivers)
+                .await?;
+            store.verify_artifact_receiver_snapshot(&put, &receivers).await?;
+            let target = Arc::new(ArtifactDeleteTarget {
+                store: store.id,
+                record,
+                lifecycle,
+                attempt,
+                repair: repair_owner,
+            });
+            let mut opts = ObjectOptions {
+                versioned: true,
+                version_id: Some(version.to_string()),
+                expected_bucket_incarnation_id: Some(expected_incarnation),
+                artifact_delete_target: Some(Arc::clone(&target)),
+                delete_mutation_owner: Some(target.clone()),
+                ..Default::default()
+            };
+            opts.add_write_commit_guard(&target.attempt);
+            opts.add_write_commit_guard(&target.repair);
+            // These owners fence seal records, not the object. Ordinary DELETE
+            // must still acquire and retain its exact object WRITE owner.
+            opts.no_lock = false;
+            target.check_live()?;
+            // Preserve the normal exact DELETE's Object Lock, quorum, journal,
+            // cache and capacity behavior. Its success is logical deletion, not
+            // a claim that every offline shard has been physically erased.
+            match store.delete_object(&put.bucket, &object, opts).await {
+                Ok(info) => {
+                    // Match the S3 request layer's committed-generation quota
+                    // delta. A strict absence retry must not subtract twice.
+                    if !info.name.is_empty()
+                        && !info.delete_marker
+                        && let Ok(size) = crate::data_usage::quota_object_size(&info)
+                    {
+                        crate::data_usage::record_bucket_object_delete_memory(&put.bucket, size, false).await;
+                    }
+                }
+                Err(Error::VersionNotFound(bucket, object, version))
+                    if bucket == target.record.bucket
+                        && rustfs_utils::path::encode_dir_object(&object) == target.record.object
+                        && version == target.record.version_id.to_string() => {}
+                Err(Error::ObjectNotFound(bucket, object))
+                    if bucket == target.record.bucket
+                        && rustfs_utils::path::encode_dir_object(&object) == target.record.object => {}
+                Err(error) => return Err(error),
+            }
+            store.verify_artifact_receiver_snapshot(&put, &receivers).await?;
+            store
+                .inventory_artifact_record(&put.bucket, expected_incarnation, &put.attempt_prefix)
+                .await?;
+            target.check_live()
+        })
+        .await?
+    }
+}
@@ -0,0 +1,207 @@
+// Copyright 2026 RustFS Team
+// SPDX-License-Identifier: Apache-2.0
+
+use super::*;
+use crate::disk::{ArtifactInventoryFrame, ArtifactInventoryVersion, Disk};
+use rustfs_protos::proto_gen::node_service::ArtifactInventoryPhase;
+use tokio::{sync::mpsc, time::Instant};
+
+/// Physical observations retain their member. Replicas are not extra business
+/// versions and this stream makes no quorum-readability or GC claim.
+#[derive(Debug)]
+pub enum ArtifactAttemptInventoryFrame {
+    Observations {
+        endpoint: String,
+        disk_id: Uuid,
+        versions: Vec<ArtifactInventoryVersion>,
+    },
+    Complete {
+        members: usize,
+        observations: u64,
+    },
+}
+
+impl ECStore {
+    /// Inventory one fully sealed attempt across every configured receiver.
+    /// Earlier output is staging only; only the final frame plus Ok is complete.
+    pub async fn inventory_artifact_attempt(
+        self: Arc<Self>,
+        bucket: &str,
+        incarnation: Uuid,
+        prefix: &str,
+        deadline: Instant,
+        output: mpsc::Sender<ArtifactAttemptInventoryFrame>,
+    ) -> Result<()> {
+        tokio::time::timeout_at(deadline, Box::pin(async move {
+            require_put_seal_topology(&self).await?;
+            if self.ctx.lock_manager().is_disabled() { return Err(Error::other("artifact inventory requires namespace locking")); }
+            let lifecycle = self.acquire_bucket_lifecycle_read_lock(bucket).await?;
+            let put = self.inventory_artifact_record(bucket, incarnation, prefix).await?;
+            let repair = ArtifactRepairSealRecord::new(&put);
+            // Lifecycle -> attempt -> repair record. Receivers do not reenter
+            // distributed locks; actual two-domain disk owners guard their reads.
+            let store = self.clone();
+            let bucket = bucket.to_owned();
+            let prefix = prefix.to_owned();
+            with_config_object_write_lock(self, put.path(), move |attempt| async move {
+                tokio::time::timeout_at(deadline, async {
+                    if !put.exists(store.clone(), &attempt).await? { return Err(Error::other("artifact inventory requires PUT seal record")); }
+                    let lock = store.new_ns_lock(RUSTFS_META_BUCKET, &repair.path()).await?;
+                    let repair_owner = WriteCommitGuard::acquire(&lock, get_lock_acquire_timeout()).await?;
+                    if !repair.exists(store.clone(), &repair_owner).await? { return Err(Error::other("artifact inventory requires repair seal record")); }
+                    let receivers = store.capture_artifact_receivers().await?;
+                    let mut observations = 0u64;
+                    for (endpoint, (disk, expected)) in &receivers {
+                        if lifecycle.is_lock_lost() || attempt.is_lock_lost() || repair_owner.is_lock_lost() {
+                            return Err(Error::other("artifact inventory fence was lost"));
+                        }
+                        let (sender, mut frames) = mpsc::channel(2);
+                        let scan = async {
+                            match disk.as_ref() {
+                                Disk::Local(local) => local.get_disk().inventory_artifact_attempt(*expected, &bucket, &prefix, put.identity(), deadline, sender).await,
+                                Disk::Remote(remote) => remote.inventory_artifact_attempt(*expected, (&bucket, incarnation), &prefix, ArtifactInventoryPhase::ArtifactInventoryScan, deadline, sender).await,
+                            }
+                        };
+                        tokio::pin!(scan);
+                        let mut sequence = 0;
+                        let mut count = 0u64;
+                        let mut terminal = false;
+                        let mut ended = false;
+                        let mut done = false;
+                        while !ended || !done {
+                            tokio::select! {
+                                result = &mut scan, if !done => { result.map_err(Error::other)?; done = true; },
+                                frame = frames.recv(), if !ended => match frame {
+                                    Some(ArtifactInventoryFrame::Entries { sequence: actual, versions }) if !terminal && actual == sequence => {
+                                        count = count.checked_add(u64::try_from(versions.len()).map_err(Error::other)?).ok_or_else(|| Error::other("artifact inventory count overflow"))?;
+                                        output.send(ArtifactAttemptInventoryFrame::Observations { endpoint: endpoint.clone(), disk_id: *expected, versions }).await
+                                            .map_err(|_| Error::other("artifact inventory consumer closed"))?;
+                                        sequence += 1;
+                                    }
+                                    Some(ArtifactInventoryFrame::Complete { disk_id, incarnation: actual, attempt_prefix, entries })
+                                        if !terminal && disk_id == *expected && actual == incarnation && attempt_prefix == prefix && entries == count => terminal = true,
+                                    Some(_) => return Err(Error::other("artifact inventory member stream is invalid")),
+                                    None => ended = true,
+                                },
+                            }
+                        }
+                        if !terminal { return Err(Error::other("artifact inventory member is incomplete")); }
+                        observations = observations.checked_add(count).ok_or_else(|| Error::other("artifact inventory count overflow"))?;
+                    }
+                    store.verify_inventory_members(&put, &receivers, deadline).await?;
+                    let current = store.artifact_inventory_receiver_identity(&bucket, incarnation, &prefix).await?;
+                    if current.receiver_key != put.identity().receiver_key || lifecycle.is_lock_lost() || attempt.is_lock_lost() || repair_owner.is_lock_lost() {
+                        return Err(Error::other("artifact inventory authority changed"));
+                    }
+                    output.send(ArtifactAttemptInventoryFrame::Complete { members: receivers.len(), observations }).await
+                        .map_err(|_| Error::other("artifact inventory consumer closed"))?;
+                    Ok(())
+                }).await.map_err(|_| Error::other("artifact inventory deadline exceeded"))?
+            }).await?
+        })).await.map_err(|_| Error::other("artifact inventory deadline exceeded"))?
+    }
+
+    pub(super) async fn inventory_artifact_record(&self, bucket: &str, expected: Uuid, prefix: &str) -> Result<PutSealRecord> {
+        use crate::bucket::metadata::BUCKET_INCARNATION_FILE;
+        use crate::config::com::read_config_observation;
+        if expected.is_nil()
+            || crate::bucket::utils::has_bad_path_component(bucket)
+            || bucket.is_empty()
+            || crate::bucket::utils::is_meta_bucketname(bucket)
+        {
+            return Err(Error::other("artifact inventory authority is invalid"));
+        }
+        let store = metadata_sys::object_store_in(&self.ctx).await?;
+        if store.id != self.id {
+            return Err(Error::other("artifact inventory authority belongs to another store"));
+        }
+        // Do not enter metadata_sys's lazy bucket READ/migration path: the
+        // coordinator already owns lifecycle READ and a writer may be queued.
+        // Observation reads bypass cache and suppress physical read repair.
+        let path = BucketMetadata::new(bucket).save_file_path();
+        let (bytes, _) = read_config_observation(store.clone(), &path, 64 * 1024 * 1024).await?;
+        let mut metadata = BucketMetadata::decode_file(&bytes)?;
+        let (sidecar, _) =
+            read_config_observation(store, &format!("{BUCKET_META_PREFIX}/{bucket}/{BUCKET_INCARNATION_FILE}"), 16).await?;
+        if metadata.name != bucket
+            || !metadata.bucket_creation_committed
+            || metadata.bucket_incarnation_id != expected
+            || Uuid::from_slice(&sidecar).ok() != Some(expected)
+        {
+            return Err(Error::other("artifact inventory incarnation mismatch"));
+        }
+        metadata.parse_all_configs()?;
+        if !metadata.versioning_config.as_ref().is_some_and(|config| {
+            config.enabled()
+                && !config.exclude_folders.unwrap_or(false)
+                && config.excluded_prefixes.as_ref().is_none_or(Vec::is_empty)
+        }) {
+            return Err(Error::other("artifact inventory requires managed versioning"));
+        }
+        PutSealRecord::new(&metadata, prefix)
+    }
+
+    pub(crate) async fn artifact_inventory_receiver_identity(
+        &self,
+        bucket: &str,
+        expected: Uuid,
+        prefix: &str,
+    ) -> Result<ArtifactPutIdentity> {
+        Ok(self.inventory_artifact_record(bucket, expected, prefix).await?.identity())
+    }
+
+    async fn verify_inventory_members(
+        &self,
+        record: &PutSealRecord,
+        captured: &ArtifactReceiverSnapshot,
+        deadline: Instant,
+    ) -> Result<()> {
+        for final_pass in [false, true] {
+            let current = self.artifact_receiver_inventory().await?;
+            if current.len() != captured.len()
+                || current
+                    .iter()
+                    .any(|(endpoint, disk)| !captured.get(endpoint).is_some_and(|(old, _)| Arc::ptr_eq(old, disk)))
+            {
+                return Err(Error::other("artifact inventory membership changed"));
+            }
+            if final_pass {
+                for (disk, expected) in captured.values() {
+                    if disk.cached_disk_id().await != Some(*expected) {
+                        return Err(Error::other("artifact inventory expected identity changed"));
+                    }
+                }
+                break;
+            }
+            for (disk, expected) in captured.values() {
+                if disk.cached_disk_id().await != Some(*expected) {
+                    return Err(Error::other("artifact inventory expected identity changed"));
+                }
+                match disk.as_ref() {
+                    Disk::Local(local) => {
+                        let _verification = local
+                            .get_disk()
+                            .verify_artifact_inventory_closed(*expected, record.identity(), deadline)
+                            .await
+                            .map_err(Error::other)?;
+                    }
+                    Disk::Remote(remote) => {
+                        let (output, _unused) = mpsc::channel(1);
+                        remote
+                            .inventory_artifact_attempt(
+                                *expected,
+                                (&record.bucket, record.incarnation_id),
+                                &record.attempt_prefix,
+                                ArtifactInventoryPhase::ArtifactInventoryVerify,
+                                deadline,
+                                output,
+                            )
+                            .await
+                            .map_err(Error::other)?;
+                    }
+                }
+            }
+        }
+        Ok(())
+    }
+}
@@ -0,0 +1,287 @@
+// Copyright 2024 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use std::collections::HashMap;
+use std::future::Future;
+use std::sync::atomic::{AtomicU64, Ordering};
+use std::sync::{Arc, Mutex, Weak};
+
+/// Shares only reads started after a caller arrives; retains no idle results.
+#[derive(Default)]
+pub(crate) struct OrdinaryClassificationRegistry {
+    gates: Mutex<HashMap<String, Weak<Gate>>>,
+    #[cfg(test)]
+    after_unregister: Option<std::sync::Barrier>,
+}
+
+#[derive(Default)]
+struct Gate {
+    started_generation: AtomicU64,
+    completed: tokio::sync::Mutex<Option<CompletedRead>>,
+}
+
+struct CompletedRead {
+    generation: u64,
+    allowed: bool,
+}
+
+struct Registration<'a> {
+    registry: &'a OrdinaryClassificationRegistry,
+    bucket: &'a str,
+    gate: Option<Arc<Gate>>,
+    observed_generation: u64,
+}
+
+impl OrdinaryClassificationRegistry {
+    pub(crate) async fn classify(&self, bucket: &str, read: impl Future<Output = bool>) -> bool {
+        self.register(bucket).classify(read).await
+    }
+
+    fn register<'a>(&'a self, bucket: &'a str) -> Registration<'a> {
+        // Callers requiring physical admission must register after acquiring it.
+        // Release the registry lock before awaiting the gate, then acquire the
+        // existing metadata locks.
+        let mut gates = self.gates.lock().unwrap_or_else(std::sync::PoisonError::into_inner);
+        let gate = gates.get(bucket).and_then(Weak::upgrade).unwrap_or_else(|| {
+            let gate = Arc::new(Gate::default());
+            gates.insert(bucket.to_owned(), Arc::downgrade(&gate));
+            gate
+        });
+        let observed_generation = gate.started_generation.load(Ordering::Acquire);
+        Registration {
+            registry: self,
+            bucket,
+            gate: Some(gate),
+            observed_generation,
+        }
+    }
+}
+
+impl Registration<'_> {
+    async fn classify(self, read: impl Future<Output = bool>) -> bool {
+        let Some(gate) = self.gate.as_ref() else {
+            return false;
+        };
+        let mut completed = gate.completed.lock().await;
+        // Only a read started after this caller registered can authorize it.
+        // Arrivals during a read therefore wait for the next fresh read.
+        if let Some(result) = completed
+            .as_ref()
+            .filter(|result| result.generation > self.observed_generation)
+        {
+            return result.allowed;
+        }
+        let Ok(previous) = gate
+            .started_generation
+            .try_update(Ordering::AcqRel, Ordering::Acquire, |generation| generation.checked_add(1))
+        else {
+            return false;
+        };
+        // Keep the gate through the original bounded metadata read. Cancellation
+        // releases it without publishing a result; another caller can read again.
+        let allowed = read.await;
+        *completed = Some(CompletedRead {
+            generation: previous + 1,
+            allowed,
+        });
+        allowed
+    }
+}
+
+impl Drop for Registration<'_> {
+    fn drop(&mut self) {
+        let Some(gate) = self.gate.take() else {
+            return;
+        };
+        let mut gates = self.registry.gates.lock().unwrap_or_else(std::sync::PoisonError::into_inner);
+        // Strong references are acquired and released under this registry lock,
+        // so concurrent final callers cannot both miss the last reference.
+        if Arc::strong_count(&gate) == 1
+            && gates
+                .get(self.bucket)
+                .is_some_and(|registered| registered.ptr_eq(&Arc::downgrade(&gate)))
+        {
+            gates.remove(self.bucket);
+        }
+        drop(gate);
+        drop(gates);
+        #[cfg(test)]
+        if let Some(barrier) = &self.registry.after_unregister {
+            barrier.wait();
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use futures::poll;
+    use std::task::Poll;
+    use tokio::sync::oneshot;
+
+    fn assert_empty(registry: &OrdinaryClassificationRegistry) {
+        assert!(registry.gates.lock().expect("classification registry").is_empty());
+    }
+
+    #[tokio::test]
+    async fn late_arrivals_share_only_the_next_fail_closed_read() {
+        let registry = OrdinaryClassificationRegistry::default();
+        let reads = AtomicU64::new(0);
+        let (release, waiting) = oneshot::channel();
+        let mut first = Box::pin(registry.classify("bucket", async {
+            reads.fetch_add(1, Ordering::Relaxed);
+            waiting.await.expect("release first read");
+            true
+        }));
+        assert!(poll!(first.as_mut()).is_pending());
+        let mut followers = (0..16)
+            .map(|_| {
+                Box::pin(registry.classify("bucket", async {
+                    reads.fetch_add(1, Ordering::Relaxed);
+                    false
+                }))
+            })
+            .collect::<Vec<_>>();
+        for follower in &mut followers {
+            assert!(poll!(follower.as_mut()).is_pending());
+        }
+        release.send(()).expect("first reader still alive");
+        assert_eq!(poll!(first.as_mut()), Poll::Ready(true));
+        for follower in &mut followers {
+            assert_eq!(poll!(follower.as_mut()), Poll::Ready(false));
+        }
+        assert_eq!(reads.load(Ordering::Relaxed), 2);
+        assert_empty(&registry);
+    }
+
+    #[tokio::test]
+    async fn successive_waves_always_read_again() {
+        let registry = OrdinaryClassificationRegistry::default();
+        let reads = AtomicU64::new(0);
+        for expected in [true, false, true] {
+            assert_eq!(
+                registry
+                    .classify("bucket", async {
+                        reads.fetch_add(1, Ordering::Relaxed);
+                        expected
+                    })
+                    .await,
+                expected
+            );
+            assert_empty(&registry);
+        }
+        assert_eq!(reads.load(Ordering::Relaxed), 3);
+    }
+
+    #[tokio::test]
+    async fn canceled_leader_does_not_publish_or_strand_waiters() {
+        let registry = OrdinaryClassificationRegistry::default();
+        let reads = AtomicU64::new(0);
+        let old_registration = registry.register("bucket");
+        assert!(
+            registry
+                .classify("bucket", async {
+                    reads.fetch_add(1, Ordering::Relaxed);
+                    true
+                })
+                .await
+        );
+        let mut leader = Box::pin(registry.classify("bucket", async {
+            reads.fetch_add(1, Ordering::Relaxed);
+            std::future::pending::<bool>().await
+        }));
+        assert!(poll!(leader.as_mut()).is_pending());
+        let mut old_waiter =
+            Box::pin(old_registration.classify(async { panic!("old waiter must reuse the completed post-registration read") }));
+        assert!(poll!(old_waiter.as_mut()).is_pending());
+        let mut late_waiter = Box::pin(registry.classify("bucket", async {
+            reads.fetch_add(1, Ordering::Relaxed);
+            false
+        }));
+        assert!(poll!(late_waiter.as_mut()).is_pending());
+        drop(leader);
+        assert_eq!(poll!(old_waiter.as_mut()), Poll::Ready(true));
+        assert_eq!(poll!(late_waiter.as_mut()), Poll::Ready(false));
+        assert_eq!(reads.load(Ordering::Relaxed), 3);
+        assert_empty(&registry);
+    }
+
+    #[tokio::test]
+    async fn canceled_follower_does_not_retain_the_gate() {
+        let registry = OrdinaryClassificationRegistry::default();
+        let (release, waiting) = oneshot::channel();
+        let mut leader = Box::pin(registry.classify("bucket", async {
+            waiting.await.expect("release leader");
+            true
+        }));
+        assert!(poll!(leader.as_mut()).is_pending());
+        let mut follower = Box::pin(registry.classify("bucket", async { panic!("canceled follower must not read") }));
+        assert!(poll!(follower.as_mut()).is_pending());
+        drop(follower);
+        assert_eq!(registry.gates.lock().expect("classification registry").len(), 1);
+        release.send(()).expect("leader still alive");
+        assert_eq!(poll!(leader.as_mut()), Poll::Ready(true));
+        assert_empty(&registry);
+    }
+
+    #[test]
+    fn concurrent_final_registrations_remove_the_gate() {
+        let registry = OrdinaryClassificationRegistry {
+            after_unregister: Some(std::sync::Barrier::new(2)),
+            ..Default::default()
+        };
+        let first = registry.register("bucket");
+        let second = registry.register("bucket");
+        // Both destructors reach the unlocked barrier before either returns.
+        // Moving the Arc release after this barrier leaves a stale registry key.
+        std::thread::scope(|scope| {
+            scope.spawn(move || drop(first));
+            scope.spawn(move || drop(second));
+        });
+        assert_empty(&registry);
+    }
+
+    #[tokio::test]
+    async fn buckets_and_stores_do_not_share_gates() {
+        let first_store = OrdinaryClassificationRegistry::default();
+        let second_store = OrdinaryClassificationRegistry::default();
+        let mut blocked = Box::pin(first_store.classify("first", std::future::pending()));
+        assert!(poll!(blocked.as_mut()).is_pending());
+        assert_eq!(poll!(Box::pin(first_store.classify("second", async { true }))), Poll::Ready(true));
+        assert_eq!(poll!(Box::pin(second_store.classify("first", async { false }))), Poll::Ready(false));
+        assert_empty(&second_store);
+        drop(blocked);
+        assert_empty(&first_store);
+    }
+
+    #[tokio::test]
+    async fn generation_exhaustion_fails_closed_without_reading() {
+        let registry = OrdinaryClassificationRegistry::default();
+        let registration = registry.register("bucket");
+        let gate = registration.gate.as_ref().expect("registered gate");
+        gate.started_generation.store(u64::MAX, Ordering::Release);
+        *gate.completed.lock().await = Some(CompletedRead {
+            generation: u64::MAX,
+            allowed: true,
+        });
+        assert!(
+            !registry
+                .classify("bucket", async { panic!("exhausted generation must deny without reading") })
+                .await
+        );
+        assert_eq!(gate.started_generation.load(Ordering::Acquire), u64::MAX);
+        drop(registration);
+        assert_empty(&registry);
+    }
+}
@@ -890,6 +890,7 @@ pub(crate) async fn cleanup_free_version_exact(
    let bucket_guard = api
        .acquire_bucket_lifecycle_read_lock(&oi.bucket)
        .await
+        .map(Arc::new)
        .map_err(std::io::Error::other)?;
    let (lease, delete_plan) = acquire_free_version_tier_lease(oi, &api.tier_config_mgr()).await?;
    let local_object = encode_dir_object(&oi.name);
@@ -958,7 +959,7 @@ pub(crate) async fn cleanup_free_version_exact(
        };
        delete_request.set_tier_free_version();
        if let Err(err) = set
-            .delete_object_version(&oi.bucket, &local_object, &delete_request, false)
+            .delete_object_version_with_lifecycle_owner(&oi.bucket, &local_object, &delete_request, Arc::clone(&bucket_guard))
            .await
            && first_error.is_none()
        {
@@ -8496,6 +8497,104 @@ mod tests {
        }
    }

+    #[cfg(feature = "test-util")]
+    #[tokio::test]
+    #[serial]
+    async fn artifact_delete_entrypoints_free_version_cleaner_completes_with_queued_lifecycle_writer() {
+        let (disk_paths, ecstore) = setup_test_env().await;
+        let bucket = format!("free-version-queued-writer-{}", Uuid::new_v4());
+        let object = "free-version";
+        create_test_bucket(&ecstore, &bucket).await;
+        let (backend, identity) = register_recovery_mock_tier(&ecstore).await;
+        seed_recoverable_free_version(&disk_paths, &bucket, object, None, Some(identity)).await;
+        let oi = list_tier_free_versions(Arc::clone(&ecstore), 100, None, None, CancellationToken::new())
+            .await
+            .expect("list real persisted free version")
+            .items
+            .into_iter()
+            .find(|oi| oi.bucket == bucket)
+            .expect("free-version task must address this fixture");
+        assert!(oi.transitioned_object.free_version);
+        backend
+            .set_put_remote_version(Some(oi.transitioned_object.version_id.clone()))
+            .await;
+        let remote = TierConfigMgr::acquire_operation_lease(&ecstore.tier_config_mgr(), "WARM")
+            .await
+            .expect("remote fixture lease");
+        remote
+            .put(&oi.transitioned_object.name, ReaderImpl::Body(Bytes::from_static(b"body")), 4)
+            .await
+            .expect("seed exact remote object");
+        drop(remote);
+
+        let barrier = Arc::new(super::FreeVersionPostRemoteDeleteTestBarrier::default());
+        let cleanup_barrier = Arc::clone(&barrier);
+        let cleanup_store = Arc::clone(&ecstore);
+        let cleanup_oi = oi.clone();
+        let mut cleanup = tokio::spawn(async move {
+            super::FREE_VERSION_POST_REMOTE_DELETE_TEST_BARRIER
+                .scope(cleanup_barrier, async move {
+                    super::cleanup_free_version_exact(cleanup_store, &cleanup_oi, &CancellationToken::new()).await
+                })
+                .await
+        });
+        tokio::time::timeout(StdDuration::from_secs(10), barrier.arrived.notified())
+            .await
+            .expect("cleaner owns lifecycle READ and has completed remote DELETE");
+        assert!(!backend.contains(&oi.transitioned_object.name).await);
+        for disk in &disk_paths {
+            assert!(
+                disk.join(&bucket).join(object).join(STORAGE_FORMAT_FILE).is_file(),
+                "local exact cleanup must still be pending at the boundary"
+            );
+        }
+
+        // Resolve first so the pending poll is the actual local lock wait.
+        // A later READ would normally be admitted alongside the cleaner's READ;
+        // its pending state independently proves this WRITE is now queued.
+        let lifecycle = ecstore
+            .new_ns_lock(&bucket, crate::storage_api_contracts::bucket::BUCKET_LIFECYCLE_LOCK_OBJECT)
+            .await
+            .expect("lifecycle namespace");
+        let mut writer = Box::pin(lifecycle.get_write_lock(StdDuration::from_secs(30)));
+        let writer_queued = futures::poll!(&mut writer).is_pending();
+        let mut later_reader = Box::pin(lifecycle.get_read_lock(StdDuration::from_secs(30)));
+        let later_reader_blocked = futures::poll!(&mut later_reader).is_pending();
+        drop(later_reader);
+        barrier.release.notify_one();
+        assert!(writer_queued, "cleaner must retain the real lifecycle READ owner");
+        assert!(later_reader_blocked, "queued lifecycle WRITE must block a later READ");
+
+        // Keep the same WRITE future queued, without cancelling/retrying it.
+        // Re-entering READ here would deadlock behind this waiting writer.
+        let finished = tokio::time::timeout(StdDuration::from_secs(10), &mut cleanup).await;
+        if finished.is_err() {
+            cleanup.abort();
+            drop(writer);
+            let _ = tokio::time::timeout(StdDuration::from_secs(5), &mut cleanup).await;
+            panic!("exact local free-version cleanup re-entered lifecycle READ behind the queued writer");
+        }
+        assert!(
+            finished
+                .expect("bounded cleaner completion")
+                .expect("cleaner task")
+                .expect("exact local cleanup")
+        );
+        let writer = tokio::time::timeout(StdDuration::from_secs(10), writer)
+            .await
+            .expect("queued lifecycle WRITE proceeds after real cleanup drains")
+            .expect("lifecycle WRITE acquired");
+        for disk in &disk_paths {
+            assert!(!disk.join(&bucket).join(object).exists(), "free version remains on a real local disk");
+        }
+        assert_eq!(backend.remove_count().await, 1, "cleaner must delete the exact remote tuple once");
+        drop(writer);
+        ecstore
+            .delete_bucket(&bucket, &DeleteBucketOptions::default())
+            .await
+            .expect("remove empty fixture bucket");
+    }
+
    #[cfg(feature = "test-util")]
    #[tokio::test]
    #[serial]
@@ -11314,7 +11413,13 @@ mod tests {
        let marker = marker
            .as_deref()
            .expect("production checkpoint should persist an object marker");
-        assert_eq!(marker, expected_marker, "production checkpoint should stop at the first page boundary");
+        let marker_suffix = marker
+            .strip_prefix(&expected_marker)
+            .expect("production checkpoint should stop at the first page boundary");
+        assert!(
+            marker_suffix.is_empty() || marker_suffix.starts_with("[rustfs_cache:v2,"),
+            "unexpected production checkpoint marker suffix: {marker_suffix}"
+        );
        assert_eq!(version_marker.as_deref(), Some("null"));
    }

@@ -23,7 +23,6 @@ use std::{
 };

 use futures::StreamExt;
-use rand::RngExt as _;
 use serde::{Deserialize, Serialize};
 use sha2::{Digest, Sha256};
 use tokio_util::sync::CancellationToken;
@@ -71,7 +70,6 @@ pub(crate) const EVENT_LIFECYCLE_TIER_DELETE_JOURNAL: &str = "lifecycle_tier_del
 // successful pages while its wall-clock budget remains.
 pub const DEFAULT_TIER_DELETE_JOURNAL_RECOVERY_LIMIT: usize = 8;
 const TIER_DELETE_JOURNAL_RECOVERY_INTERVAL: Duration = Duration::from_secs(60);
-const TIER_DELETE_JOURNAL_RECOVERY_MAX_IDLE_INTERVAL: Duration = Duration::from_secs(5 * 60);
 const TIER_DELETE_JOURNAL_RECOVERY_TIMEOUT: Duration = Duration::from_secs(300);
 const TIER_DELETE_JOURNAL_RECOVERY_PASS_BUDGET: Duration = Duration::from_secs(240);
 const TIER_DELETE_REMOTE_DEADLINE: Duration = Duration::from_secs(30);
@@ -6106,114 +6104,57 @@ pub(crate) async fn recover_test_tier_delete_journal_pass_with_budget(
    recover_tier_delete_journal_pass(api, cancel_token, manifest_marker, journal_marker, budget).await
 }

-fn tier_delete_journal_recovery_pass_is_idle(stats: &TierDeleteJournalRecoveryPassStats) -> bool {
-    stats.manifest_pages > 0
-        && stats.journal_pages > 0
-        && stats.manifest_errors == 0
-        && stats.journal_errors == 0
-        && !stats.deadline_exhausted
-        && !stats.canceled
-        && stats.manifests == TierDeleteDispatchManifestRecoveryStats::default()
-        && stats.journals == TierDeleteJournalRecoveryStats::default()
-}
-
-fn bounded_tier_delete_journal_recovery_delay(delay: Duration, percent: u32) -> Duration {
-    (delay.saturating_mul(percent) / 100)
-        .clamp(TIER_DELETE_JOURNAL_RECOVERY_INTERVAL, TIER_DELETE_JOURNAL_RECOVERY_MAX_IDLE_INTERVAL)
-}
-
-fn jitter_tier_delete_journal_recovery_delay(delay: Duration) -> Duration {
-    bounded_tier_delete_journal_recovery_delay(delay, rand::rng().random_range(90..=110))
-}
-
-async fn drive_tier_delete_journal_recovery(
-    cancel_token: &CancellationToken,
-    wait_for_wakeup: impl AsyncFn(),
-    mut recover: impl AsyncFnMut() -> TierDeleteJournalRecoveryPassStats,
-    jitter_delay: fn(Duration) -> Duration,
-) {
+pub async fn run_tier_delete_journal_recovery_loop(api: Arc<ECStore>, cancel_token: CancellationToken) {
    let mut interval = tokio::time::interval(TIER_DELETE_JOURNAL_RECOVERY_INTERVAL);
    interval.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Delay);
-    let mut idle_interval = TIER_DELETE_JOURNAL_RECOVERY_INTERVAL;
+    let mut marker: Option<String> = None;
+    let mut manifest_marker: Option<String> = None;

    loop {
        tokio::select! {
            biased;
            _ = cancel_token.cancelled() => return,
-            _ = wait_for_wakeup() => {
-                idle_interval = TIER_DELETE_JOURNAL_RECOVERY_INTERVAL;
-                interval.reset();
-            },
            _ = interval.tick() => {},
+            _ = api.ctx.wait_for_tier_delete_journal_recovery() => {},
        }

-        let stats = recover().await;
+        let stats = recover_tier_delete_journal_pass(
+            api.clone(),
+            &cancel_token,
+            &mut manifest_marker,
+            &mut marker,
+            TIER_DELETE_JOURNAL_RECOVERY_PASS_BUDGET,
+        )
+        .await;
        if stats.canceled {
            return;
        }
-        if tier_delete_journal_recovery_pass_is_idle(&stats) {
-            // Only a completed empty sweep may defer discovery. Retained,
-            // failed, or paginated work keeps the original retry tick budget.
-            interval.reset_after(jitter_delay(idle_interval));
-            idle_interval = idle_interval
-                .saturating_mul(2)
-                .min(TIER_DELETE_JOURNAL_RECOVERY_MAX_IDLE_INTERVAL);
-        } else {
-            idle_interval = TIER_DELETE_JOURNAL_RECOVERY_INTERVAL;
-        }
+        debug!(
+            event = EVENT_LIFECYCLE_TIER_DELETE_JOURNAL,
+            component = LOG_COMPONENT_ECSTORE,
+            subsystem = LOG_SUBSYSTEM_LIFECYCLE,
+            manifest_pages = stats.manifest_pages,
+            manifest_scanned = stats.manifests.scanned,
+            manifest_advanced = stats.manifests.advanced,
+            manifest_deleted = stats.manifests.deleted,
+            manifest_retained = stats.manifests.retained,
+            manifest_failed = stats.manifests.failed,
+            manifest_errors = stats.manifest_errors,
+            manifest_truncated = stats.manifests.truncated,
+            manifest_next_marker = ?manifest_marker,
+            journal_pages = stats.journal_pages,
+            journal_scanned = stats.journals.scanned,
+            journal_deleted = stats.journals.deleted,
+            journal_failed = stats.journals.failed,
+            journal_errors = stats.journal_errors,
+            journal_truncated = stats.journals.truncated,
+            journal_next_marker = ?marker,
+            deadline_exhausted = stats.deadline_exhausted,
+            "Recovered tier delete journal pass"
+        );
    }
 }

-pub async fn run_tier_delete_journal_recovery_loop(api: Arc<ECStore>, cancel_token: CancellationToken) {
-    let mut marker: Option<String> = None;
-    let mut manifest_marker: Option<String> = None;
-    let wake_context = api.ctx.clone();
-    let recovery_cancel_token = cancel_token.clone();
-    drive_tier_delete_journal_recovery(
-        &cancel_token,
-        async move || wake_context.wait_for_tier_delete_journal_recovery().await,
-        async move || {
-            let stats = recover_tier_delete_journal_pass(
-                api.clone(),
-                &recovery_cancel_token,
-                &mut manifest_marker,
-                &mut marker,
-                TIER_DELETE_JOURNAL_RECOVERY_PASS_BUDGET,
-            )
-            .await;
-            if stats.canceled {
-                return stats;
-            }
-            debug!(
-                event = EVENT_LIFECYCLE_TIER_DELETE_JOURNAL,
-                component = LOG_COMPONENT_ECSTORE,
-                subsystem = LOG_SUBSYSTEM_LIFECYCLE,
-                manifest_pages = stats.manifest_pages,
-                manifest_scanned = stats.manifests.scanned,
-                manifest_advanced = stats.manifests.advanced,
-                manifest_deleted = stats.manifests.deleted,
-                manifest_retained = stats.manifests.retained,
-                manifest_failed = stats.manifests.failed,
-                manifest_errors = stats.manifest_errors,
-                manifest_truncated = stats.manifests.truncated,
-                manifest_next_marker = ?manifest_marker,
-                journal_pages = stats.journal_pages,
-                journal_scanned = stats.journals.scanned,
-                journal_deleted = stats.journals.deleted,
-                journal_failed = stats.journals.failed,
-                journal_errors = stats.journal_errors,
-                journal_truncated = stats.journals.truncated,
-                journal_next_marker = ?marker,
-                deadline_exhausted = stats.deadline_exhausted,
-                "Recovered tier delete journal pass"
-            );
-            stats
-        },
-        jitter_tier_delete_journal_recovery_delay,
-    )
-    .await;
-}
-
 async fn await_tier_delete_journal_recovery<T, F>(
    cancel_token: &CancellationToken,
    timeout: Duration,
@@ -6239,20 +6180,16 @@ mod tests {
    use super::{
        PersistedTierDeleteJournalEntry, TIER_DELETE_DISPATCH_MANIFEST_VERSION, TIER_DELETE_DISPATCH_PARENT_RECORD_TYPE,
        TIER_DELETE_DISPATCH_PARENT_VERSION, TIER_DELETE_JOURNAL_EXACT_VERSION, TIER_DELETE_JOURNAL_LEGACY_PREFIX,
-        TIER_DELETE_JOURNAL_RECOVERY_INTERVAL, TIER_DELETE_JOURNAL_RECOVERY_MAX_IDLE_INTERVAL,
        TIER_DELETE_JOURNAL_SOLE_OWNER_VERSION, TIER_DELETE_JOURNAL_STATE_VERSION, TIER_DELETE_JOURNAL_TRANSACTION_VERSION,
        TIER_DELETE_JOURNAL_V1_RECOVERY_SCHEMA, TIER_DELETE_JOURNAL_V2_RECOVERY_SCHEMA, TIER_DELETE_JOURNAL_V6_PREFIX,
-        TIER_DELETE_JOURNAL_VERSION, TierDeleteDispatchChunkBinding, TierDeleteDispatchManifest,
-        TierDeleteDispatchManifestRecoveryStats, TierDeleteDispatchManifestState, TierDeleteDispatchParent,
-        TierDeleteDispatchParentState, TierDeleteDispatchRecord, TierDeleteJournalRecoveryPassStats,
-        await_tier_delete_journal_recovery, bounded_tier_delete_journal_recovery_delay, decode_tier_delete_dispatch_record,
-        decode_tier_delete_journal_entry, drive_tier_delete_journal_recovery, encode_tier_delete_dispatch_manifest,
+        TIER_DELETE_JOURNAL_VERSION, TierDeleteDispatchChunkBinding, TierDeleteDispatchManifest, TierDeleteDispatchManifestState,
+        TierDeleteDispatchParent, TierDeleteDispatchParentState, TierDeleteDispatchRecord, await_tier_delete_journal_recovery,
+        decode_tier_delete_dispatch_record, decode_tier_delete_journal_entry, encode_tier_delete_dispatch_manifest,
        encode_tier_delete_dispatch_parent, encode_tier_delete_journal_entry, object_info_references_tier_delete,
        record_tier_delete_journal_backend_identity, same_tier_delete_authorization_identity, same_tier_delete_journal_identity,
        tier_delete_dispatch_child_matches_parent, tier_delete_dispatch_chunk_manifest_object_name,
        tier_delete_dispatch_journal_set_digest, tier_delete_dispatch_manifest_object_name, tier_delete_journal_object_name,
-        tier_delete_journal_recovery_pass_is_idle, tier_delete_source_matches_dispatch_scope,
-        validate_legacy_tier_delete_recovery_source,
+        tier_delete_source_matches_dispatch_scope, validate_legacy_tier_delete_recovery_source,
    };
    use crate::bucket::lifecycle::tier_sweeper::{
        Jentry, TierDeleteDispatchBinding, TierDeleteJournalState, TierDeleteSourceIdentity,
@@ -6896,213 +6833,6 @@ mod tests {
        assert!(err.to_string().contains("decode tier delete journal failed"));
    }

-    fn empty_recovery_pass() -> TierDeleteJournalRecoveryPassStats {
-        TierDeleteJournalRecoveryPassStats {
-            manifest_pages: 1,
-            journal_pages: 1,
-            ..Default::default()
-        }
-    }
-
-    #[test]
-    fn tier_delete_journal_recovery_requires_both_completed_empty_queues_for_idle() {
-        assert!(tier_delete_journal_recovery_pass_is_idle(&empty_recovery_pass()));
-        let mut cases = Vec::new();
-        cases.push(TierDeleteJournalRecoveryPassStats::default());
-        for change in [
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.manifest_pages = 0,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.journal_pages = 0,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.manifest_errors = 1,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.journal_errors = 1,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.deadline_exhausted = true,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.canceled = true,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.manifests.scanned = 1,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.manifests.retained = 1,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.manifests.failed = 1,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.manifests.truncated = true,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.manifests.next_marker = Some("next".to_owned()),
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.journals.scanned = 1,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.journals.failed = 1,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.journals.truncated = true,
-            |stats: &mut TierDeleteJournalRecoveryPassStats| stats.journals.next_marker = Some("next".to_owned()),
-        ] {
-            let mut stats = empty_recovery_pass();
-            change(&mut stats);
-            cases.push(stats);
-        }
-        for stats in cases {
-            assert!(
-                !tier_delete_journal_recovery_pass_is_idle(&stats),
-                "unfinished recovery was considered idle: {stats:?}"
-            );
-        }
-    }
-
-    #[test]
-    fn tier_delete_journal_recovery_jitter_preserves_discovery_bounds() {
-        for delay in [
-            Duration::ZERO,
-            Duration::from_secs(60),
-            Duration::from_secs(120),
-            Duration::from_secs(300),
-            Duration::MAX,
-        ] {
-            for percent in [90, 100, 110] {
-                let jittered = bounded_tier_delete_journal_recovery_delay(delay, percent);
-                assert!(jittered >= TIER_DELETE_JOURNAL_RECOVERY_INTERVAL);
-                assert!(jittered <= TIER_DELETE_JOURNAL_RECOVERY_MAX_IDLE_INTERVAL);
-                if delay == Duration::from_secs(120) {
-                    assert!((Duration::from_secs(108)..=Duration::from_secs(132)).contains(&jittered));
-                }
-            }
-        }
-    }
-
-    #[tokio::test(start_paused = true)]
-    async fn tier_delete_journal_recovery_loop_starts_immediately_backs_off_and_wakes() {
-        let cancel = CancellationToken::new();
-        let wake = tokio::sync::Notify::new();
-        let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel();
-        let started = tokio::time::Instant::now();
-        let recovery = drive_tier_delete_journal_recovery(
-            &cancel,
-            async || wake.notified().await,
-            async || {
-                tx.send(tokio::time::Instant::now()).expect("test must observe each pass");
-                empty_recovery_pass()
-            },
-            |delay| bounded_tier_delete_journal_recovery_delay(delay, 110),
-        );
-        let exercise = async {
-            assert_eq!(rx.recv().await.expect("startup recovery must run"), started);
-            let mut elapsed = Duration::ZERO;
-            for delay in [66, 132, 264, 300, 300] {
-                tokio::time::advance(Duration::from_secs(delay - 1)).await;
-                tokio::task::yield_now().await;
-                assert!(rx.try_recv().is_err(), "idle pass ran before its backoff");
-                tokio::time::advance(Duration::from_secs(1)).await;
-                elapsed += Duration::from_secs(delay);
-                assert_eq!(rx.recv().await.expect("bounded idle recovery must run"), started + elapsed);
-            }
-            wake.notify_one();
-            assert_eq!(rx.recv().await.expect("notification must bypass idle delay"), started + elapsed);
-            let first_idle_delay = Duration::from_secs(66);
-            tokio::time::advance(first_idle_delay).await;
-            assert_eq!(
-                rx.recv().await.expect("wakeup must reset idle backoff"),
-                started + elapsed + first_idle_delay
-            );
-            cancel.cancel();
-        };
-        tokio::join!(recovery, exercise);
-    }
-
-    #[tokio::test(start_paused = true)]
-    async fn tier_delete_journal_recovery_loop_preserves_known_work_tick_deadline() {
-        let cancel = CancellationToken::new();
-        let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel();
-        let started = tokio::time::Instant::now();
-        let mut pass = 0;
-        let recovery = drive_tier_delete_journal_recovery(
-            &cancel,
-            async || std::future::pending::<()>().await,
-            async || {
-                tx.send(tokio::time::Instant::now()).expect("test must observe each pass");
-                pass += 1;
-                if pass <= 3 {
-                    return empty_recovery_pass();
-                }
-                if pass == 4 {
-                    tokio::time::sleep(Duration::from_secs(40)).await;
-                }
-                let mut stats = empty_recovery_pass();
-                match pass {
-                    4 => {
-                        stats.manifests = TierDeleteDispatchManifestRecoveryStats {
-                            retained: 1,
-                            scanned: 1,
-                            ..Default::default()
-                        }
-                    }
-                    5 => stats.manifest_errors = 1,
-                    6 => stats.journal_errors = 1,
-                    7 => stats.manifests.truncated = true,
-                    8 => stats.journals.failed = 1,
-                    9 => stats.deadline_exhausted = true,
-                    _ => stats.journals.next_marker = Some("next-page".to_owned()),
-                }
-                stats
-            },
-            std::convert::identity,
-        );
-        let exercise = async {
-            for expected in [0, 60, 180, 420] {
-                assert_eq!(
-                    rx.recv().await.expect("idle and work passes must run"),
-                    started + Duration::from_secs(expected)
-                );
-            }
-            tokio::time::advance(Duration::from_secs(59)).await;
-            tokio::task::yield_now().await;
-            assert!(rx.try_recv().is_err(), "known work ran before the next tick");
-            tokio::time::advance(Duration::from_secs(1)).await;
-            for expected in [480, 540, 600, 660, 720, 780, 840] {
-                assert_eq!(
-                    rx.recv().await.expect("unfinished work must retain the base tick deadline"),
-                    started + Duration::from_secs(expected)
-                );
-            }
-            cancel.cancel();
-        };
-        tokio::join!(recovery, exercise);
-    }
-
-    #[tokio::test(start_paused = true)]
-    async fn tier_delete_journal_recovery_loop_keeps_wakeup_received_during_a_pass() {
-        let cancel = CancellationToken::new();
-        let wake = tokio::sync::Notify::new();
-        let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel();
-        let started = tokio::time::Instant::now();
-        let mut first = true;
-        let recovery = drive_tier_delete_journal_recovery(
-            &cancel,
-            async || wake.notified().await,
-            async || {
-                tx.send(tokio::time::Instant::now()).expect("test must observe each pass");
-                if first {
-                    first = false;
-                    tokio::time::sleep(Duration::from_secs(40)).await;
-                }
-                empty_recovery_pass()
-            },
-            std::convert::identity,
-        );
-        let exercise = async {
-            assert_eq!(rx.recv().await.expect("startup recovery must run"), started);
-            wake.notify_one();
-            tokio::time::advance(Duration::from_secs(40)).await;
-            assert_eq!(
-                rx.recv().await.expect("a notification during recovery must remain pending"),
-                started + Duration::from_secs(40)
-            );
-            cancel.cancel();
-        };
-        tokio::join!(recovery, exercise);
-    }
-
-    #[tokio::test(start_paused = true)]
-    async fn tier_delete_journal_recovery_loop_cancellation_wins_over_ready_wakeup() {
-        let cancel = CancellationToken::new();
-        cancel.cancel();
-        drive_tier_delete_journal_recovery(
-            &cancel,
-            async || {},
-            async || panic!("shutdown must prevent admission even when a wakeup and startup tick are ready"),
-            std::convert::identity,
-        )
-        .await;
-    }
-
    #[tokio::test]
    async fn tier_delete_journal_recovery_has_a_hard_outer_timeout() {
        let result = await_tier_delete_journal_recovery(
@@ -437,6 +437,8 @@ pub struct BucketMetadata {
    pub created: OffsetDateTime,
    pub lock_enabled: bool, // While marked as unused, it may need to be retained
    pub bucket_incarnation_id: Uuid,
+    pub artifact_base_prefix: Option<String>,
+    pub artifact_backup_retained: bool,
    pub(crate) bucket_incarnation_sidecar: bool,
    pub(crate) bucket_creation_committed: bool,
    pub policy_config_json: Vec<u8>,
@@ -512,6 +514,8 @@ impl Default for BucketMetadata {
            created: OffsetDateTime::UNIX_EPOCH,
            lock_enabled: Default::default(),
            bucket_incarnation_id: Uuid::nil(),
+            artifact_base_prefix: None,
+            artifact_backup_retained: false,
            bucket_incarnation_sidecar: false,
            bucket_creation_committed: false,
            policy_config_json: Default::default(),
@@ -607,7 +611,7 @@ impl BucketMetadata {
    /// legacy migration path, which mints the sidecar first; it must not be
    /// rewritten by this migration.
    pub(crate) fn needs_bucket_creation_commit(&self) -> bool {
-        self.lock_enabled
+        (self.lock_enabled || self.artifact_base_prefix.is_some())
            && !self.bucket_creation_committed
            && self.bucket_incarnation_sidecar
            && !self.bucket_incarnation_id.is_nil()
@@ -704,6 +708,22 @@ impl BucketMetadata {
                    self.bucket_incarnation_id =
                        Uuid::from_slice(&bytes).map_err(|err| Error::other(format!("invalid BucketIncarnationID: {err}")))?;
                }
+                "ArtifactBackupRetained" => {
+                    if self.artifact_backup_retained || !rmp::decode::read_bool(rd)? {
+                        return Err(Error::other("invalid artifact backup retention marker"));
+                    }
+                    self.artifact_backup_retained = true;
+                }
+                "ArtifactBasePrefix" => {
+                    if self.artifact_base_prefix.is_some() {
+                        return Err(Error::other("duplicate artifact namespace"));
+                    }
+                    let prefix = read_msgp_str(rd)?;
+                    if !crate::storage_api_contracts::bucket::valid_artifact_base_prefix(&prefix) {
+                        return Err(Error::other("invalid artifact namespace"));
+                    }
+                    self.artifact_base_prefix = Some(prefix);
+                }
                "PolicyConfigJSON" | "PolicyConfigJson" => self.policy_config_json = read_msgp_bin(rd)?,
                "NotificationConfigXML" | "NotificationConfigXml" => self.notification_config_xml = read_msgp_bin(rd)?,
                "LifecycleConfigXML" | "LifecycleConfigXml" => self.lifecycle_config_xml = read_msgp_bin(rd)?,
@@ -766,7 +786,7 @@ impl BucketMetadata {
    /// Encode to msgp bytes. Field order follows MinIO BucketMetadata for compatibility.
    pub fn encode_to<W: Write>(&self, wr: &mut W) -> Result<()> {
        // Map size: MinIO fields (25) + RustFS extensions (22)
-        let map_len: u32 = 47;
+        let map_len: u32 = 47 + u32::from(self.artifact_base_prefix.is_some()) + u32::from(self.artifact_backup_retained);
        rmp::encode::write_map_len(wr, map_len)?;

        // MinIO field order (same as Go struct)
@@ -780,6 +800,15 @@ impl BucketMetadata {
        rmp::encode::write_bool(wr, self.lock_enabled)?;

        write_bin_field(wr, "BucketIncarnationID", self.bucket_incarnation_id.as_bytes())?;
+        if let Some(prefix) = &self.artifact_base_prefix {
+            rmp::encode::write_str(wr, "ArtifactBasePrefix")?;
+            rmp::encode::write_str(wr, prefix)?;
+        }
+
+        if self.artifact_backup_retained {
+            rmp::encode::write_str(wr, "ArtifactBackupRetained")?;
+            rmp::encode::write_bool(wr, true)?;
+        }

        write_bin_field(wr, "PolicyConfigJSON", &self.policy_config_json)?;
        write_bin_field(wr, "NotificationConfigXML", &self.notification_config_xml)?;
@@ -880,13 +909,28 @@ impl BucketMetadata {
        }

        match version {
-            BUCKET_METADATA_VERSION => {}
+            BUCKET_METADATA_VERSION | 2 => {}
            _ => return Err(Error::other("read_bucket_metadata: version invalid")),
        }

        Ok(())
    }

+    /// Version two is reserved for permanent artifact backup retention. Older
+    /// readers reject its header instead of skipping the protection field.
+    pub(crate) fn decode_file(bytes: &[u8]) -> Result<Self> {
+        Self::check_header(bytes)?;
+        let metadata = Self::unmarshal(&bytes[4..])?;
+        let retained_header = LittleEndian::read_u16(&bytes[2..4]) == 2;
+        if retained_header != metadata.artifact_backup_retained {
+            return Err(Error::other("artifact backup retention header mismatch"));
+        }
+        if metadata.artifact_backup_retained {
+            metadata.validate_artifact_configuration()?;
+        }
+        Ok(metadata)
+    }
+
    pub(crate) fn default_timestamps(&mut self) {
        if self.policy_config_updated_at == OffsetDateTime::UNIX_EPOCH {
            self.policy_config_updated_at = self.created
@@ -1025,6 +1069,9 @@ impl BucketMetadata {
                    }
                    Some(config)
                };
+                if self.artifact_base_prefix.is_some() && !config.as_ref().is_some_and(artifact_versioning_enabled) {
+                    return Err(Error::other("artifact bucket versioning must remain enabled"));
+                }
                self.versioning_config_xml = data;
                self.versioning_config = config;
                self.versioning_config_updated_at = updated;
@@ -1127,13 +1174,34 @@ impl BucketMetadata {
        &mut self,
        store: std::sync::Arc<crate::store::ECStore>,
        write_completion: WriteCompletion,
+    ) -> Result<()> {
+        let opts = crate::object_api::ObjectOptions {
+            max_parity: true,
+            write_completion,
+            ..Default::default()
+        };
+        self.save_with_store_options(store, &opts).await
+    }
+
+    pub(crate) async fn save_with_store_options(
+        &mut self,
+        store: Arc<ECStore>,
+        opts: &crate::object_api::ObjectOptions,
    ) -> Result<()> {
        self.parse_all_configs()?;
+        self.validate_artifact_update(store.clone()).await?;
        let mut buf: Vec<u8> = vec![0; 4];

        LittleEndian::write_u16(&mut buf[0..2], BUCKET_METADATA_FORMAT);

-        LittleEndian::write_u16(&mut buf[2..4], BUCKET_METADATA_VERSION);
+        LittleEndian::write_u16(
+            &mut buf[2..4],
+            if self.artifact_backup_retained {
+                2
+            } else {
+                BUCKET_METADATA_VERSION
+            },
+        );

        let data = self
            .marshal_msg()
@@ -1141,21 +1209,52 @@ impl BucketMetadata {

        buf.extend_from_slice(&data);

-        save_config_with_opts(
-            store,
-            self.save_file_path().as_str(),
-            buf,
-            &crate::object_api::ObjectOptions {
-                max_parity: true,
-                write_completion,
-                ..Default::default()
-            },
-        )
-        .await?;
+        save_config_with_opts(store, self.save_file_path().as_str(), buf, opts).await?;

        Ok(())
    }

+    fn validate_artifact_configuration(&self) -> Result<()> {
+        if self.artifact_backup_retained && (self.artifact_base_prefix.is_none() || !self.bucket_creation_committed) {
+            return Err(Error::other("artifact backup retention requires a committed managed bucket"));
+        }
+        if let Some(prefix) = &self.artifact_base_prefix {
+            if !crate::storage_api_contracts::bucket::valid_artifact_base_prefix(prefix) || self.bucket_incarnation_id.is_nil() {
+                return Err(Error::other("invalid artifact bucket identity"));
+            }
+            let versioning = deserialize::<VersioningConfiguration>(&self.versioning_config_xml)?;
+            if !artifact_versioning_enabled(&versioning) {
+                return Err(Error::other("artifact bucket versioning must remain enabled"));
+            }
+        }
+        Ok(())
+    }
+
+    /// Full metadata replacement must not change a generation's creation identity.
+    pub(crate) async fn validate_artifact_update(&self, store: Arc<ECStore>) -> Result<()> {
+        self.validate_artifact_configuration()?;
+        // An existing empty/corrupt metadata object is not permission to create an identity.
+        match read_config_preserve_empty(store, &self.save_file_path()).await {
+            Ok(data) => {
+                let previous = Self::decode_file(&data)?;
+                previous.validate_artifact_configuration()?;
+                if previous.artifact_backup_retained && !self.artifact_backup_retained {
+                    return Err(Error::other("artifact backup retention cannot be removed"));
+                }
+                // Deletion removes this record before recreation. A caller-supplied
+                // incarnation cannot turn an existing bucket into a new generation.
+                if previous.artifact_base_prefix != self.artifact_base_prefix
+                    || (previous.artifact_base_prefix.is_some() && previous.bucket_incarnation_id != self.bucket_incarnation_id)
+                {
+                    return Err(Error::other("artifact bucket identity is immutable"));
+                }
+            }
+            Err(Error::ConfigNotFound) => {}
+            Err(error) => return Err(error),
+        }
+        Ok(())
+    }
+
    fn parse_policy_config(&mut self) -> Result<()> {
        if !self.policy_config_json.is_empty() {
            self.policy_config = Some(serde_json::from_slice(&self.policy_config_json)?);
@@ -1199,6 +1298,7 @@ impl BucketMetadata {
    /// `rustfs_bucket_metadata_parse_failed_total`, reflected in
    /// `rustfs_bucket_metadata_unparsable_current`, and logged at error level.
    pub(super) fn parse_all_configs(&mut self) -> Result<()> {
+        self.validate_artifact_configuration()?;
        if let Err(e) = self.parse_policy_config() {
            tracing::warn!(
                event = "bucket_metadata_parse_failed",
@@ -1464,6 +1564,10 @@ impl BucketMetadata {
    }
 }

+fn artifact_versioning_enabled(config: &VersioningConfiguration) -> bool {
+    config.enabled() && !config.exclude_folders.unwrap_or(false) && config.excluded_prefixes.as_ref().is_none_or(Vec::is_empty)
+}
+
 pub(crate) async fn load_bucket_incarnation(api: Arc<ECStore>, bucket: &str) -> Result<Option<Uuid>> {
    let path = format!("{BUCKET_META_PREFIX}/{bucket}/{BUCKET_INCARNATION_FILE}");
    let data = match read_config_preserve_empty(api, &path).await {
@@ -1560,9 +1664,7 @@ async fn read_bucket_metadata(api: Arc<ECStore>, bucket: &str) -> Result<BucketM

    let data = read_config(api, &file_path).await?;

-    BucketMetadata::check_header(&data)?;
-
-    let bm = BucketMetadata::unmarshal(&data[4..])?;
+    let bm = BucketMetadata::decode_file(&data)?;

    Ok(bm)
 }
@@ -1586,6 +1688,98 @@ where
 mod test {
    use super::*;

+    #[test]
+    fn artifact_metadata_roundtrip_and_corrupt_prefix_rejection() {
+        let mut metadata = BucketMetadata::new("artifacts");
+        metadata.artifact_base_prefix = Some("images/".to_owned());
+        let encoded = metadata.marshal_msg().expect("encode artifact metadata");
+        let decoded = BucketMetadata::unmarshal(&encoded).expect("decode artifact metadata");
+        assert_eq!(decoded.artifact_base_prefix, metadata.artifact_base_prefix, "ARTIFACT_METADATA_ROUNDTRIP");
+        assert_eq!(decoded.bucket_incarnation_id, metadata.bucket_incarnation_id);
+        let legacy = BucketMetadata::new("ordinary")
+            .marshal_msg()
+            .expect("encode ordinary metadata");
+        assert!(
+            BucketMetadata::unmarshal(&legacy)
+                .expect("decode ordinary metadata")
+                .artifact_base_prefix
+                .is_none()
+        );
+        for prefix in ["", "../", "outputs", "a b/"] {
+            let mut invalid = Vec::new();
+            rmp::encode::write_map_len(&mut invalid, 1).expect("encode map");
+            rmp::encode::write_str(&mut invalid, "ArtifactBasePrefix").expect("encode field");
+            rmp::encode::write_str(&mut invalid, prefix).expect("encode invalid prefix");
+            assert!(BucketMetadata::unmarshal(&invalid).is_err(), "ARTIFACT_CORRUPT_PREFIX");
+        }
+    }
+
+    #[test]
+    fn artifact_backup_retention_marker_rejects_false_and_duplicates() {
+        for count in [1, 2] {
+            let mut bytes = Vec::new();
+            rmp::encode::write_map_len(&mut bytes, count).unwrap();
+            for _ in 0..count {
+                rmp::encode::write_str(&mut bytes, "ArtifactBackupRetained").unwrap();
+                rmp::encode::write_bool(&mut bytes, count == 2).unwrap();
+            }
+            assert!(BucketMetadata::unmarshal(&bytes).is_err(), "O02P3_INVALID_RETENTION_MARKER");
+        }
+    }
+
+    #[test]
+    fn artifact_backup_retention_requires_matching_header_and_identity() {
+        let mut metadata = BucketMetadata::new("retained");
+        metadata.bucket_incarnation_id = Uuid::new_v4();
+        metadata.bucket_creation_committed = true;
+        metadata.artifact_base_prefix = Some("outputs/".to_owned());
+        metadata.versioning_config_xml = b"<VersioningConfiguration><Status>Enabled</Status></VersioningConfiguration>".to_vec();
+        let file = |metadata: &BucketMetadata, version: u16| {
+            let mut bytes = Vec::new();
+            bytes.extend_from_slice(&BUCKET_METADATA_FORMAT.to_le_bytes());
+            bytes.extend_from_slice(&version.to_le_bytes());
+            bytes.extend_from_slice(&metadata.marshal_msg().unwrap());
+            bytes
+        };
+        assert!(BucketMetadata::decode_file(&file(&metadata, 1)).is_ok(), "O02P3_ORDINARY_V1_COMPATIBLE");
+        assert!(BucketMetadata::decode_file(&file(&metadata, 2)).is_err(), "O02P3_MARKER_REQUIRED");
+        metadata.artifact_backup_retained = true;
+        assert!(
+            BucketMetadata::decode_file(&file(&metadata, 1)).is_err(),
+            "O02P3_PROTECTION_CANNOT_DOWNGRADE_HEADER"
+        );
+        assert!(
+            BucketMetadata::decode_file(&file(&metadata, 2))
+                .unwrap()
+                .artifact_backup_retained,
+            "O02P3_PROTECTED_V2_ROUNDTRIP"
+        );
+        metadata.artifact_base_prefix = None;
+        assert!(
+            BucketMetadata::decode_file(&file(&metadata, 2)).is_err(),
+            "O02P3_PROTECTION_REQUIRES_MANAGED_BUCKET"
+        );
+    }
+
+    #[test]
+    fn artifact_versioning_cannot_be_disabled_or_excluded() {
+        let mut metadata = BucketMetadata::new("artifacts");
+        metadata.artifact_base_prefix = Some("images/".to_owned());
+        for xml in [
+            "",
+            "<VersioningConfiguration><Status>Suspended</Status></VersioningConfiguration>",
+            "<VersioningConfiguration><Status>Enabled</Status><ExcludeFolders>true</ExcludeFolders></VersioningConfiguration>",
+            "<VersioningConfiguration><Status>Enabled</Status><ExcludedPrefixes><Prefix>images/</Prefix></ExcludedPrefixes></VersioningConfiguration>",
+        ] {
+            assert!(
+                metadata
+                    .update_config(BUCKET_VERSIONING_CONFIG, xml.as_bytes().to_vec())
+                    .is_err(),
+                "ARTIFACT_VERSIONING_REQUIRED"
+            );
+        }
+    }
+
    /// rustfs/backlog#1734: `StorageError::clone` rebuilds I/O errors from
    /// their text. The unreadable-config refusal must stay typed across that
    /// clone, or a cloned error stops mapping to its retryable S3 response.
@@ -293,8 +293,10 @@ pub(super) fn get_bucket_metadata_sys() -> Result<Arc<RwLock<BucketMetadataSys>>
 pub async fn set_bucket_metadata(bucket: String, bm: BucketMetadata) -> Result<()> {
    let sys = get_bucket_metadata_sys()?;
    let lock = sys.write().await;
-    lock.set(bucket, Arc::new(bm)).await;
-    Ok(())
+    if bucket != bm.name {
+        return Err(Error::other("bucket metadata identity mismatch"));
+    }
+    lock.set_validated(bm).await
 }

 pub async fn reload_bucket_metadata(api: Arc<ECStore>, bucket: &str) -> Result<()> {
@@ -585,6 +587,15 @@ pub(crate) async fn get_cached_bucket_incarnation_id_in(
    sys.get_bucket_incarnation_id(bucket).await
 }

+pub(crate) async fn get_bucket_incarnation_metadata_in(
+    ctx: &crate::runtime::instance::InstanceContext,
+    bucket: &str,
+) -> Result<Arc<BucketMetadata>> {
+    let sys = bucket_metadata_sys_of(ctx)?;
+    let sys = sys.read().await.clone();
+    sys.get_bucket_incarnation_metadata(bucket).await
+}
+
 pub(crate) async fn set_bucket_metadata_in(ctx: &crate::runtime::instance::InstanceContext, bm: BucketMetadata) -> Result<()> {
    let sys = bucket_metadata_sys_of(ctx)?;
    let lock = sys.read().await;
@@ -2132,7 +2143,16 @@ impl BucketMetadataSys {
        }
    }

-    pub async fn set(&self, bucket: String, bm: Arc<BucketMetadata>) {
+    pub(crate) async fn set_validated(&self, mut bm: BucketMetadata) -> Result<()> {
+        if bm.artifact_base_prefix.is_some() {
+            bm.parse_all_configs()?;
+        }
+        bm.validate_artifact_update(self.object_store()).await?;
+        self.set(bm.name.clone(), Arc::new(bm)).await;
+        Ok(())
+    }
+
+    async fn set(&self, bucket: String, bm: Arc<BucketMetadata>) {
        if !is_meta_bucketname(&bucket) {
            let publish_lock = self.metadata_publish_lock(&bucket);
            let _publish_guard = publish_lock.lock().await;
@@ -2147,6 +2167,11 @@ impl BucketMetadataSys {
        }
    }

+    #[cfg(any(test, feature = "test-util"))]
+    pub async fn set_for_test(&self, bucket: String, bm: Arc<BucketMetadata>) {
+        self.set(bucket, bm).await;
+    }
+
    /// Remove a bucket's cached metadata from the in-memory map.
    ///
    /// Returns `true` if an entry was present. Reserved meta buckets are ignored.
@@ -2651,12 +2676,16 @@ impl BucketMetadataSys {
    }

    async fn get_bucket_incarnation_id(&self, bucket: &str) -> Result<Uuid> {
+        Ok(self.get_bucket_incarnation_metadata(bucket).await?.bucket_incarnation_id)
+    }
+
+    async fn get_bucket_incarnation_metadata(&self, bucket: &str) -> Result<Arc<BucketMetadata>> {
        let authority = self.get_metadata_authority(bucket).await?;
        if let BucketMetadataAuthority::Authoritative(metadata) = &authority
            && metadata.bucket_incarnation_sidecar
            && !metadata.bucket_incarnation_id.is_nil()
        {
-            return Ok(metadata.bucket_incarnation_id);
+            return Ok(Arc::clone(metadata));
        }

        match authority {
@@ -2665,7 +2694,7 @@ impl BucketMetadataSys {
                    BucketMetadataAuthority::Authoritative(metadata)
                        if metadata.bucket_incarnation_sidecar && !metadata.bucket_incarnation_id.is_nil() =>
                    {
-                        Ok(metadata.bucket_incarnation_id)
+                        Ok(metadata)
                    }
                    BucketMetadataAuthority::Authoritative(_) | BucketMetadataAuthority::Fabricated => {
                        Err(Error::other(format!("bucket incarnation metadata is not authoritative: {bucket}")))
@@ -2993,7 +3022,8 @@ impl BucketMetadataSys {
            load_bucket_metadata_parse_with_presence(self.object_store(), bucket, true),
        )
        .await?;
-        if persisted && metadata.lock_enabled && !metadata.bucket_creation_committed {
+        if persisted && (metadata.lock_enabled || metadata.artifact_base_prefix.is_some()) && !metadata.bucket_creation_committed
+        {
            return Err(Error::ErasureWriteQuorum);
        }
        if persisted {
@@ -14,6 +14,7 @@

 // #730: bucket subsystems still contain staged ECStore migration code.

+pub mod artifact;
 pub mod bandwidth;
 pub mod bucket_target_sys;
 pub mod config_parse_mode;
@@ -895,7 +895,7 @@ mod tests {
            .update_bucket_metadata_config(&bucket, QUOTA_CONFIG_FILE, legacy_quota_json(8192))
            .await
            .expect("newer quota save");
-        sys.read().await.set(bucket.clone(), stale).await;
+        sys.read().await.set_for_test(bucket.clone(), stale).await;
        assert_eq!(
            checker
                .migrate_reservation_protocol(&bucket)
@@ -275,7 +275,7 @@ async fn quota_statistics_remain_available_without_a_complete_scanner_snapshot()
            // assertion: reporting must work before a protocol upgrade.
            let metadata_sys = BucketMetadataSys::new(store.clone());
            let (metadata, _) = metadata_sys.get_config(&bucket).await.expect("load existing bucket metadata");
-            metadata_sys.set(bucket.clone(), metadata).await;
+            metadata_sys.set_for_test(bucket.clone(), metadata).await;
            let checker = QuotaChecker::new(Arc::new(RwLock::new(metadata_sys)));
            let (snapshot_source, size) = if source == "empty" { ("complete", 0) } else { (source, 1000) };
            install_reporting_snapshot(store.clone(), &bucket, snapshot_source, size).await;
@@ -317,7 +317,7 @@ async fn quota_statistics_preserve_configuration_errors() {
    let metadata_sys = BucketMetadataSys::new(store.clone());
    let (mut metadata, _) = metadata_sys.get_config(&bucket).await.expect("load existing bucket metadata");
    Arc::make_mut(&mut metadata).quota_config_json = b"{not-json".to_vec();
-    metadata_sys.set(bucket.clone(), metadata).await;
+    metadata_sys.set_for_test(bucket.clone(), metadata).await;
    let checker = QuotaChecker::new(Arc::new(RwLock::new(metadata_sys)));

    let statistics = checker.get_quota_stats(&bucket).await;
@@ -707,6 +707,13 @@ struct ShardedReservationData {
 }

 impl ReservationLedgerData {
+    fn store(&self) -> &Arc<ECStore> {
+        match self {
+            Self::Single(data) => &data.store,
+            Self::Sharded(data) => &data.store,
+        }
+    }
+
    fn bucket(&self) -> &str {
        match self {
            Self::Single(data) => &data.bucket,
@@ -758,7 +765,7 @@ impl QuotaReservation {
        let Some(ledger) = self.ledger.as_ref() else {
            return;
        };
-        crate::store::list_objects::observe_scanner_namespace_mutations(ledger.bucket(), 1);
+        crate::store::list_objects::observe_list_objects_mutation(ledger.store(), ledger.bucket()).await;
        match settle(ledger, true).await {
            Ok(()) => self.ledger = None,
            Err(err) => log_deferred_settlement(ledger, "commit_deferred", &err),
@@ -1283,7 +1290,7 @@ async fn reconcile_exact(store: &Arc<ECStore>, bucket: &str, ledger: &mut QuotaL
 }

 async fn exact_bucket_usage(store: &Arc<ECStore>, bucket: &str) -> Result<u64> {
-    crate::store::list_objects::observe_scanner_namespace_mutations(bucket, 1);
+    crate::store::list_objects::observe_list_objects_mutation(store, bucket).await;
    Ok(compute_bucket_usage(Arc::clone(store), bucket).await?.size)
 }

@@ -43,6 +43,11 @@ const EVENT_METACACHE_LISTING: &str = "metacache_listing";
 pub type AgreedFn = Box<dyn Fn(MetaCacheEntry) -> Pin<Box<dyn Future<Output = Result<(), DiskError>> + Send>> + Send + 'static>;
 pub type PartialFn =
    Box<dyn Fn(MetaCacheEntries, &[Option<DiskError>]) -> Pin<Box<dyn Future<Output = ()> + Send>> + Send + 'static>;
+pub(crate) type PartialResultFn = Box<
+    dyn Fn(MetaCacheEntries, &[Option<DiskError>]) -> Pin<Box<dyn Future<Output = disk::error::Result<()>> + Send>>
+        + Send
+        + 'static,
+>;
 type FinishedFn = Box<dyn Fn(&[Option<DiskError>]) -> Pin<Box<dyn Future<Output = ()> + Send>> + Send + 'static>;

 #[derive(Clone, Default)]
@@ -55,7 +60,6 @@ impl FallbackClaimTracker {
        self.claimed.lock().await.insert(disk.endpoint().to_string());
    }

-    #[cfg(test)]
    pub(crate) async fn claimed_keys(&self) -> HashSet<String> {
        self.claimed.lock().await.clone()
    }
@@ -313,17 +317,7 @@ pub struct ListPathRawOutcome {
 pub async fn list_path_raw(rx: CancellationToken, opts: ListPathRawOptions) -> disk::error::Result<()> {
    let rx = rx.child_token();
    let _cancel_guard = rx.clone().drop_guard();
-    list_path_raw_inner(rx, opts, None).await.map(|_| ())
-}
-
-/// Like [`list_path_raw`], but reports how the merged stream ended.
-pub(crate) async fn list_path_raw_with_outcome(
-    rx: CancellationToken,
-    opts: ListPathRawOptions,
-) -> disk::error::Result<ListPathRawOutcome> {
-    let rx = rx.child_token();
-    let _cancel_guard = rx.clone().drop_guard();
-    list_path_raw_inner(rx, opts, None).await
+    list_path_raw_inner(rx, opts, None, None).await.map(|_| ())
 }

 pub(crate) async fn list_path_raw_with_claim_tracker(
@@ -333,13 +327,25 @@ pub(crate) async fn list_path_raw_with_claim_tracker(
 ) -> disk::error::Result<ListPathRawOutcome> {
    let rx = rx.child_token();
    let _cancel_guard = rx.clone().drop_guard();
-    list_path_raw_inner(rx, opts, Some(claim_tracker)).await
+    list_path_raw_inner(rx, opts, Some(claim_tracker), None).await
+}
+
+pub(crate) async fn list_path_raw_with_partial_result(
+    rx: CancellationToken,
+    opts: ListPathRawOptions,
+    claim_tracker: FallbackClaimTracker,
+    partial_result: PartialResultFn,
+) -> disk::error::Result<ListPathRawOutcome> {
+    let rx = rx.child_token();
+    let _cancel_guard = rx.clone().drop_guard();
+    list_path_raw_inner(rx, opts, Some(claim_tracker), Some(partial_result)).await
 }

 async fn list_path_raw_inner(
    rx: CancellationToken,
    opts: ListPathRawOptions,
    fallback_claim_tracker: Option<FallbackClaimTracker>,
+    partial_result: Option<PartialResultFn>,
 ) -> disk::error::Result<ListPathRawOutcome> {
    if opts.disks.is_empty() {
        return Err(DiskError::ErasureReadQuorum);
@@ -1014,7 +1020,13 @@ async fn list_path_raw_inner(
                }
            }

-            if let Some(partial_fn) = opts.partial.as_ref() {
+            if let Some(partial_fn) = partial_result.as_ref() {
+                tokio::select! {
+                    biased;
+                    _ = revjob_rx.cancelled() => return Ok(ListPathRawOutcome { limit_reached }),
+                    result = partial_fn(MetaCacheEntries(top_entries), &errs) => result?,
+                }
+            } else if let Some(partial_fn) = opts.partial.as_ref() {
                tokio::select! {
                    biased;
                    _ = revjob_rx.cancelled() => return Ok(ListPathRawOutcome { limit_reached }),
@@ -1296,6 +1308,7 @@ mod tests {
                ..Default::default()
            },
            None,
+            None,
        )
        .await
        .expect("listing should complete");
@@ -1320,6 +1333,7 @@ mod tests {
                ..Default::default()
            },
            None,
+            None,
        )
        .await
        .expect("listing should complete");
@@ -1813,6 +1827,39 @@ mod tests {
        );
    }

+    #[tokio::test]
+    async fn list_path_raw_propagates_partial_callback_failure() {
+        let first = MetaCacheEntry {
+            name: "bucket/object-a".to_string(),
+            metadata: vec![1],
+            ..Default::default()
+        };
+        let second = MetaCacheEntry {
+            name: "bucket/object-b".to_string(),
+            metadata: vec![2],
+            ..Default::default()
+        };
+
+        let err = list_path_raw_with_partial_result(
+            CancellationToken::new(),
+            ListPathRawOptions {
+                disks: vec![None, None],
+                min_disks: 2,
+                test_reader_behaviors: vec![
+                    TestReaderBehavior::Entries(vec![first]),
+                    TestReaderBehavior::Entries(vec![second]),
+                ],
+                ..Default::default()
+            },
+            FallbackClaimTracker::default(),
+            Box::new(move |_, _| Box::pin(async { Err(DiskError::ErasureReadQuorum) })),
+        )
+        .await
+        .expect_err("a resolution failure after reader advancement must fail the listing");
+
+        assert_eq!(err, DiskError::ErasureReadQuorum);
+    }
+
    #[tokio::test]
    async fn list_path_raw_cancels_a_blocked_partial_callback() {
        let cancel = CancellationToken::new();
@@ -105,7 +105,7 @@ pub async fn tier_mutation_control_time_out_client(

 /// Build a `NodeServiceClient` bound to the [`ChannelClass`]-appropriate channel for `addr`.
 ///
-/// Bulk `bytes`-carrying RPCs, including native pool metadata recovery inventories, pass
+/// Bulk `bytes`-carrying RPCs (ReadAll/WriteAll/CompareAndUpdateFile/ReadMultiple/BatchReadVersion) pass
 /// [`ChannelClass::Bulk`] so, when channel isolation is enabled, they are physically isolated
 /// from lock/health RPCs; everything else uses [`ChannelClass::Control`]. When isolation is
 /// disabled the two classes resolve to the same cached channel, i.e. legacy behavior.
@@ -357,7 +357,6 @@ fn rename_data_grpc_stage(path: &str) -> bool {
    matches!(
        path,
        "/node_service.NodeService/RenameData"
-            | "/node_service.NodeService/RenameMultipartData"
            | "/node_service.NodeService/RenameDataAtIncarnation"
            | "/node_service.NodeService/RenameDataWithQuotaFence"
    )
@@ -380,7 +379,6 @@ where
    }

    fn call(&mut self, mut request: HttpRequest<ReqBody>) -> Self::Future {
-        let rpc_method = request.extensions().get::<tonic::GrpcMethod<'_>>().cloned();
        let observe_rename_data = rustfs_io_metrics::put_stage_metrics_enabled() && rename_data_grpc_stage(request.uri().path());
        let request_scope_started = if observe_rename_data {
            rustfs_io_metrics::put_stage_timer()
@@ -449,21 +447,13 @@ where
                let response_state = verify_tonic_peer_replay_capabilities_response(&audience, challenge, response.headers());
                if let Err(error) = &response_state
                    && (response.headers().contains_key(RPC_REPLAY_CACHE_CAPABILITY_HEADER)
-                        || response.headers().contains_key(RPC_REPLAY_CACHE_CAPABILITY_PROOF_HEADER)
-                        || matches!(sent_state.cache_capability, Some(PeerReplayCapability::Capable { .. })))
+                        || response.headers().contains_key(RPC_REPLAY_CACHE_CAPABILITY_PROOF_HEADER))
                {
                    debug!(
                        event = "internode_rpc_capability_proof_rejected",
                        component = "ecstore",
                        subsystem = "rpc_client",
                        result = "rejected",
-                        audience = audience.rsplit('@').next().unwrap_or("unknown"),
-                        rpc_service = rpc_method.as_ref().map(|method| method.service()).unwrap_or("unknown"),
-                        rpc_method = rpc_method.as_ref().map(|method| method.method()).unwrap_or("unknown"),
-                        http_status = response.status().as_u16(),
-                        grpc_status = response.headers().get("grpc-status").and_then(|value| value.to_str().ok()).unwrap_or("trailers"),
-                        capability_present = response.headers().contains_key(RPC_REPLAY_CACHE_CAPABILITY_HEADER),
-                        capability_proof_present = response.headers().contains_key(RPC_REPLAY_CACHE_CAPABILITY_PROOF_HEADER),
                        error = %error,
                        "internode RPC capability proof rejected"
                    )
@@ -438,6 +438,64 @@ where
    Ok(data)
 }

+pub(crate) async fn read_config_observation<S>(api: Arc<S>, file: &str, max_bytes: usize) -> Result<(Vec<u8>, ObjectInfo)>
+where
+    S: EcstoreObjectIO,
+{
+    let opts = ObjectOptions {
+        suppress_read_repair: true,
+        no_lock: false,
+        skip_verify_bitrot: false,
+        ..Default::default()
+    };
+    crate::object_api::without_get_object_body_cache_hook(read_config_limited_preserve_empty_with_metadata_opts(
+        api, file, &opts, max_bytes,
+    ))
+    .await
+}
+
+pub(crate) async fn read_config_observation_no_lock<S>(
+    api: Arc<S>,
+    file: &str,
+    max_bytes: usize,
+    guard: &crate::object_api::WriteCommitGuard,
+) -> Result<(Vec<u8>, ObjectInfo)>
+where
+    S: EcstoreObjectIO,
+{
+    if !guard.matches(RUSTFS_META_BUCKET, file) {
+        return Err(Error::InvalidArgument(
+            RUSTFS_META_BUCKET.to_owned(),
+            file.to_owned(),
+            "locked observation requires a matching write owner".to_owned(),
+        ));
+    }
+    let lock_lost_error = || Error::NamespaceLockQuorumUnavailable {
+        mode: "locked_config_observation",
+        bucket: RUSTFS_META_BUCKET.to_owned(),
+        object: file.to_owned(),
+        required: 1,
+        achieved: 0,
+    };
+    if guard.is_lock_lost() {
+        return Err(lock_lost_error());
+    }
+    let opts = ObjectOptions {
+        suppress_read_repair: true,
+        no_lock: true,
+        skip_verify_bitrot: false,
+        ..Default::default()
+    };
+    let result = crate::object_api::without_get_object_body_cache_hook(read_config_limited_preserve_empty_with_metadata_opts(
+        api, file, &opts, max_bytes,
+    ))
+    .await;
+    if guard.is_lock_lost() {
+        return Err(lock_lost_error());
+    }
+    result
+}
+
 pub(crate) async fn read_config_limited_preserve_empty<S>(api: Arc<S>, file: &str, max_bytes: usize) -> Result<Vec<u8>>
 where
    S: EcstoreObjectIO,
@@ -484,10 +542,22 @@ pub(crate) async fn read_config_preserve_empty<S>(api: Arc<S>, file: &str) -> Re
 where
    S: EcstoreObjectIO,
 {
-    let (data, _obj) = read_config_with_metadata_inner(api, file, &ObjectOptions::default(), true, None).await?;
+    let (data, _obj) = read_config_preserve_empty_with_metadata_opts(api, file, &ObjectOptions::default()).await?;
    Ok(data)
 }

+/// Preserve an empty config payload, its metadata, and caller-supplied read options.
+pub(crate) async fn read_config_preserve_empty_with_metadata_opts<S>(
+    api: Arc<S>,
+    file: &str,
+    opts: &ObjectOptions,
+) -> Result<(Vec<u8>, ObjectInfo)>
+where
+    S: EcstoreObjectIO,
+{
+    read_config_with_metadata_inner(api, file, opts, true, None).await
+}
+
 pub async fn read_config_no_lock<S>(api: Arc<S>, file: &str) -> Result<Vec<u8>>
 where
    S: ObjectIO<
@@ -516,15 +586,13 @@ pub(crate) async fn read_config_no_lock_preserve_empty_with_metadata<S>(api: Arc
 where
    S: EcstoreObjectIO,
 {
-    read_config_with_metadata_inner(
+    read_config_preserve_empty_with_metadata_opts(
        api,
        file,
        &ObjectOptions {
            no_lock: true,
            ..Default::default()
        },
-        true,
-        None,
    )
    .await
 }
@@ -2919,9 +2987,9 @@ mod tests {
        config_task_join_error, configs_semantically_equal, decode_server_config_blob, encode_server_config_blob,
        heal_config_descriptor, is_standard_object_server_config, lookup_configs, map_system_metadata_write_error,
        new_and_save_server_config, read_config, read_config_no_lock_preserve_empty_with_metadata, read_config_preserve_empty,
-        read_config_with_metadata, read_config_without_migrate, read_server_config_snapshot, save_config_with_opts_inner,
-        save_server_config, save_server_config_snapshot, save_server_config_snapshot_with_generation,
-        server_config_transaction_lock_path, storage_class_kvs_mut,
+        read_config_preserve_empty_with_metadata_opts, read_config_with_metadata, read_config_without_migrate,
+        read_server_config_snapshot, save_config_with_opts_inner, save_server_config, save_server_config_snapshot,
+        save_server_config_snapshot_with_generation, server_config_transaction_lock_path, storage_class_kvs_mut,
    };
    use crate::config::{audit, heal, notify, oidc, scanner};
    use crate::disk::{RUSTFS_META_BUCKET, endpoint::Endpoint};
@@ -5396,6 +5464,7 @@ mod tests {
        heal_replacement: Option<Vec<u8>>,
        heal_calls: AtomicUsize,
        write_calls: AtomicUsize,
+        last_get_no_lock: AtomicBool,
        last_put_no_lock: AtomicBool,
        last_put_preconditions: Mutex<Option<HTTPPreconditions>>,
        revision: AtomicUsize,
@@ -5411,6 +5480,7 @@ mod tests {
                heal_replacement,
                heal_calls: AtomicUsize::new(0),
                write_calls: AtomicUsize::new(0),
+                last_get_no_lock: AtomicBool::new(false),
                last_put_no_lock: AtomicBool::new(false),
                last_put_preconditions: Mutex::new(None),
                revision: AtomicUsize::new(1),
@@ -5466,8 +5536,9 @@ mod tests {
            _object: &str,
            _range: Option<HTTPRangeSpec>,
            _h: HeaderMap,
-            _opts: &ObjectOptions,
+            opts: &ObjectOptions,
        ) -> Result<GetObjectReader> {
+            self.last_get_no_lock.store(opts.no_lock, Ordering::SeqCst);
            let data = match &*self.state.lock().expect("state lock poisoned") {
                RecoveryReadState::Missing => return Err(Error::ConfigNotFound),
                RecoveryReadState::Blob(data) => data.clone(),
@@ -5779,6 +5850,325 @@ mod tests {
        assert_eq!(store.write_calls.load(Ordering::SeqCst), 0);
    }

+    type ObservationEofGate = (Option<tokio::sync::oneshot::Sender<()>>, tokio::sync::oneshot::Receiver<()>);
+
+    struct ObservationStream {
+        inner: Cursor<Vec<u8>>,
+        consumed: Arc<AtomicUsize>,
+        fail: bool,
+        eof_gate: Option<ObservationEofGate>,
+    }
+
+    impl AsyncRead for ObservationStream {
+        fn poll_read(mut self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>) -> Poll<std::io::Result<()>> {
+            if self.fail {
+                return Poll::Ready(Err(std::io::Error::other("observation stream failed")));
+            }
+            if self.inner.position() == u64::try_from(self.inner.get_ref().len()).expect("fixture length")
+                && let Some((ready, release)) = self.eof_gate.as_mut()
+            {
+                if let Some(ready) = ready.take() {
+                    ready.send(()).expect("EOF observer remains active");
+                }
+                match std::future::Future::poll(Pin::new(release), cx) {
+                    Poll::Pending => return Poll::Pending,
+                    Poll::Ready(result) => result.expect("EOF gate released"),
+                }
+                self.eof_gate = None;
+            }
+            let before = buf.filled().len();
+            let result = Pin::new(&mut self.inner).poll_read(cx, buf);
+            self.consumed.fetch_add(buf.filled().len() - before, Ordering::SeqCst);
+            result
+        }
+    }
+
+    struct ObservationStore {
+        body: Vec<u8>,
+        declared_size: i64,
+        error: Option<Error>,
+        stream_error: bool,
+        gets: AtomicUsize,
+        eof_gate: std::sync::Mutex<Option<ObservationEofGate>>,
+        consumed: Arc<AtomicUsize>,
+        options: std::sync::Mutex<Option<(bool, bool, bool)>>,
+        writes: AtomicUsize,
+    }
+
+    impl Debug for ObservationStore {
+        fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+            f.debug_struct("ObservationStore").finish()
+        }
+    }
+
+    impl ObservationStore {
+        fn new(body: Vec<u8>, declared_size: i64) -> Self {
+            Self {
+                body,
+                declared_size,
+                error: None,
+                stream_error: false,
+                gets: AtomicUsize::new(0),
+                eof_gate: std::sync::Mutex::new(None),
+                consumed: Arc::new(AtomicUsize::new(0)),
+                options: std::sync::Mutex::new(None),
+                writes: AtomicUsize::new(0),
+            }
+        }
+    }
+
+    #[async_trait::async_trait]
+    impl crate::storage_api_contracts::object::ObjectIO for ObservationStore {
+        type Error = Error;
+        type RangeSpec = HTTPRangeSpec;
+        type HeaderMap = HeaderMap;
+        type ObjectOptions = ObjectOptions;
+        type ObjectInfo = ObjectInfo;
+        type GetObjectReader = GetObjectReader;
+        type PutObjectReader = PutObjReader;
+
+        async fn get_object_reader(
+            &self,
+            bucket: &str,
+            object: &str,
+            range: Option<HTTPRangeSpec>,
+            _headers: HeaderMap,
+            opts: &ObjectOptions,
+        ) -> Result<GetObjectReader> {
+            assert_eq!(bucket, RUSTFS_META_BUCKET);
+            assert_eq!(object, "config/observation.bin");
+            self.gets.fetch_add(1, Ordering::SeqCst);
+            assert!(range.is_none());
+            *self.options.lock().expect("observation options") =
+                Some((opts.suppress_read_repair, opts.no_lock, opts.skip_verify_bitrot));
+            if let Some(error) = &self.error {
+                return Err(error.clone());
+            }
+            Ok(GetObjectReader {
+                stream: Box::new(ObservationStream {
+                    inner: Cursor::new(self.body.clone()),
+                    consumed: self.consumed.clone(),
+                    fail: self.stream_error,
+                    eof_gate: self.eof_gate.lock().expect("EOF gate").take(),
+                }),
+                object_info: ObjectInfo {
+                    size: self.declared_size,
+                    etag: Some("observation-etag".to_string()),
+                    ..Default::default()
+                },
+                buffered_body: None,
+                body_source: Default::default(),
+            })
+        }
+
+        async fn put_object(
+            &self,
+            _bucket: &str,
+            _object: &str,
+            _data: &mut PutObjReader,
+            _opts: &ObjectOptions,
+        ) -> Result<ObjectInfo> {
+            self.writes.fetch_add(1, Ordering::SeqCst);
+            Err(Error::other("observation must not write"))
+        }
+    }
+
+    #[tokio::test]
+    async fn locked_observation_preserves_options_and_typed_errors() {
+        let object = "config/observation.bin";
+        let manager = Arc::new(rustfs_lock::GlobalLockManager::new());
+        let wrapper = rustfs_lock::NamespaceLockWrapper::new(
+            rustfs_lock::NamespaceLock::with_local_manager("locked-observation-options".to_owned(), manager.clone()),
+            rustfs_lock::ObjectKey::new(RUSTFS_META_BUCKET, object),
+            "locked-observation-options".to_owned(),
+        );
+        let guard = crate::object_api::WriteCommitGuard::acquire(&wrapper, std::time::Duration::from_secs(5))
+            .await
+            .expect("matching real owner");
+        let store = Arc::new(ObservationStore::new(b"raw".to_vec(), 3));
+        let result = super::read_config_observation_no_lock(store.clone(), object, 3, &guard).await;
+        assert!(result.is_ok(), "I06L_READ_FLAGS: {result:?}");
+        assert!(*store.options.lock().expect("options") == Some((true, true, false)), "I06L_READ_FLAGS");
+        assert_eq!(result.expect("raw observation").0, b"raw");
+        assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+        for (bucket, key) in [(RUSTFS_META_BUCKET, "config/other.bin"), ("wrong-bucket", object)] {
+            let wrapper = rustfs_lock::NamespaceLockWrapper::new(
+                rustfs_lock::NamespaceLock::with_local_manager("locked-observation-target".to_owned(), manager.clone()),
+                rustfs_lock::ObjectKey::new(bucket, key),
+                "locked-observation-target".to_owned(),
+            );
+            let wrong = crate::object_api::WriteCommitGuard::acquire(&wrapper, std::time::Duration::from_secs(5))
+                .await
+                .expect("wrong-target real owner");
+            let store = Arc::new(ObservationStore::new(Vec::new(), 0));
+            let result = super::read_config_observation_no_lock(store.clone(), object, 8, &wrong).await;
+            assert!(matches!(result, Err(Error::InvalidArgument(..))), "I06L_TARGET_REJECTED");
+            assert!(store.gets.load(Ordering::SeqCst) == 0, "I06L_TARGET_REJECTED");
+        }
+        for error in [
+            Error::FileNotFound,
+            Error::ObjectNotFound(RUSTFS_META_BUCKET.to_owned(), object.to_owned()),
+            Error::ErasureReadQuorum,
+        ] {
+            let expected = if error == Error::FileNotFound || matches!(error, Error::ObjectNotFound(..)) {
+                Error::ConfigNotFound
+            } else {
+                error.clone()
+            };
+            let mut fixture = ObservationStore::new(Vec::new(), 0);
+            fixture.error = Some(error);
+            let store = Arc::new(fixture);
+            assert_eq!(
+                super::read_config_observation_no_lock(store.clone(), object, 8, &guard)
+                    .await
+                    .expect_err("typed error"),
+                expected
+            );
+            assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+        }
+        let mut fixture = ObservationStore::new(Vec::new(), 0);
+        fixture.stream_error = true;
+        let store = Arc::new(fixture);
+        let err = super::read_config_observation_no_lock(store.clone(), object, 8, &guard)
+            .await
+            .expect_err("stream failure");
+        assert!(err.to_string().contains("observation stream failed"), "I06L_TYPED_STREAM_ERROR");
+        assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+        let store = Arc::new(ObservationStore::new(vec![7; 64], 0));
+        let result = super::read_config_observation_no_lock(store.clone(), object, 8, &guard).await;
+        assert!(matches!(result, Err(Error::CorruptedFormat)), "I06L_STREAM_BOUND");
+        assert!(store.consumed.load(Ordering::SeqCst) == 9, "I06L_STREAM_BOUND");
+        assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+    }
+
+    #[tokio::test]
+    async fn locked_observation_rejects_actual_owner_loss_before_and_after_read() {
+        let object = "config/observation.bin";
+        for after_read in [false, true] {
+            let manager = Arc::new(rustfs_lock::GlobalLockManager::new());
+            let client = Arc::new(RefreshControlledClient::new(manager));
+            let wrapper = rustfs_lock::NamespaceLockWrapper::new(
+                rustfs_lock::NamespaceLock::new("locked-observation-loss".to_owned(), client.clone()),
+                rustfs_lock::ObjectKey::new(RUSTFS_META_BUCKET, object),
+                "locked-observation-loss".to_owned(),
+            );
+            let guard = crate::object_api::WriteCommitGuard::acquire(&wrapper, std::time::Duration::from_secs(5))
+                .await
+                .expect("real distributed owner");
+            let signal = guard.lock_lost_signal().expect("acquired distributed owner signal");
+            let store = Arc::new(ObservationStore::new(b"raw".to_vec(), 3));
+            if after_read {
+                let (ready_tx, ready_rx) = tokio::sync::oneshot::channel();
+                let (release_tx, release_rx) = tokio::sync::oneshot::channel();
+                *store.eof_gate.lock().expect("EOF gate") = Some((Some(ready_tx), release_rx));
+                let mut read = Box::pin(super::read_config_observation_no_lock(store.clone(), object, 3, &guard));
+                tokio::time::timeout(std::time::Duration::from_secs(60), async {
+                    tokio::select! {
+                        ready = ready_rx => ready.expect("read reached EOF"),
+                        result = &mut read => assert_eq!(false, true, "I06L_LOSS_AFTER_READ: returned before EOF gate: {result:?}"),
+                    }
+                }).await.expect("EOF watchdog");
+                client.reject_refreshes();
+                tokio::time::timeout(std::time::Duration::from_secs(60), signal.notified())
+                    .await
+                    .expect("actual owner loss watchdog");
+                assert!(guard.is_lock_lost(), "I06L_LOSS_AFTER_READ");
+                release_tx.send(()).expect("release EOF");
+                let result = tokio::time::timeout(std::time::Duration::from_secs(60), read)
+                    .await
+                    .expect("read watchdog");
+                assert!(
+                    matches!(
+                        result,
+                        Err(Error::NamespaceLockQuorumUnavailable {
+                            mode: "locked_config_observation",
+                            ..
+                        })
+                    ),
+                    "I06L_LOSS_AFTER_READ"
+                );
+                assert_eq!(store.gets.load(Ordering::SeqCst), 1);
+            } else {
+                client.reject_refreshes();
+                tokio::time::timeout(std::time::Duration::from_secs(60), signal.notified())
+                    .await
+                    .expect("actual owner loss watchdog");
+                assert!(guard.is_lock_lost(), "I06L_LOSS_BEFORE_GET");
+                let result = super::read_config_observation_no_lock(store.clone(), object, 3, &guard).await;
+                assert!(
+                    matches!(
+                        result,
+                        Err(Error::NamespaceLockQuorumUnavailable {
+                            mode: "locked_config_observation",
+                            ..
+                        })
+                    ),
+                    "I06L_LOSS_BEFORE_GET"
+                );
+                assert!(store.gets.load(Ordering::SeqCst) == 0, "I06L_LOSS_BEFORE_GET");
+            }
+            assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+        }
+    }
+
+    #[tokio::test]
+    async fn observation_preserves_options_and_errors() {
+        for body in [Vec::new(), b"raw config".to_vec()] {
+            let store = Arc::new(ObservationStore::new(body.clone(), i64::try_from(body.len()).expect("fixture size")));
+            let result = super::read_config_observation(store.clone(), "config/observation.bin", 32).await;
+            assert!(result.is_ok(), "observation must preserve empty and nonempty objects: {result:?}");
+            let (observed, info) = result.expect("successful observation");
+            assert_eq!(observed, body);
+            assert_eq!(info.etag.as_deref(), Some("observation-etag"));
+            assert_eq!(
+                *store.options.lock().expect("options"),
+                Some((true, false, false)),
+                "I05_REPAIR_SUPPRESSED"
+            );
+            assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+        }
+        for (source, expected) in [
+            (Error::FileNotFound, Error::ConfigNotFound),
+            (
+                Error::ObjectNotFound(RUSTFS_META_BUCKET.to_string(), "config/observation.bin".to_string()),
+                Error::ConfigNotFound,
+            ),
+            (Error::ErasureReadQuorum, Error::ErasureReadQuorum),
+        ] {
+            let mut fixture = ObservationStore::new(Vec::new(), 0);
+            fixture.error = Some(source);
+            let store = Arc::new(fixture);
+            let result = super::read_config_observation(store.clone(), "config/observation.bin", 32).await;
+            assert_eq!(result.expect_err("read error must propagate"), expected);
+            assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+        }
+        let mut fixture = ObservationStore::new(Vec::new(), 0);
+        fixture.stream_error = true;
+        let store = Arc::new(fixture);
+        let result = super::read_config_observation(store.clone(), "config/observation.bin", 32).await;
+        let error = result.expect_err("stream error must propagate");
+        assert!(error.to_string().contains("observation stream failed"));
+        assert_eq!(store.writes.load(Ordering::SeqCst), 0);
+    }
+
+    #[tokio::test]
+    async fn observation_enforces_byte_limit() {
+        let store = Arc::new(ObservationStore::new(vec![7; 64], 0));
+        let result = super::read_config_observation(store.clone(), "config/observation.bin", 8).await;
+        assert!(result.is_err(), "I05_BOUND_ENFORCED");
+        assert_eq!(
+            result.expect_err("bounded observation error"),
+            Error::CorruptedFormat,
+            "I05_BOUND_ENFORCED"
+        );
+        assert_eq!(store.consumed.load(Ordering::SeqCst), 9, "I05_BOUND_ENFORCED: drain exactly limit + 1");
+        let store = Arc::new(ObservationStore::new(vec![7; 8], 8));
+        let result = super::read_config_observation(store.clone(), "config/observation.bin", 8).await;
+        assert!(result.is_ok(), "exact byte limit must succeed: {result:?}");
+        assert_eq!(result.expect("exact limit").0, vec![7; 8]);
+        assert_eq!(store.consumed.load(Ordering::SeqCst), 8);
+    }
+
    #[tokio::test]
    async fn read_config_preserve_empty_distinguishes_empty_object() {
        let store = Arc::new(RecoveryMockStore::new(RecoveryReadState::Blob(Vec::new()), None));
@@ -5799,6 +6189,60 @@ mod tests {
        assert!(data.is_empty());
    }

+    #[tokio::test]
+    async fn read_config_preserve_empty_metadata_keeps_empty_and_options() {
+        let store = Arc::new(RecoveryMockStore::new(RecoveryReadState::Blob(Vec::new()), None));
+        for no_lock in [false, true] {
+            let opts = ObjectOptions {
+                no_lock,
+                ..Default::default()
+            };
+            let (data, info) = read_config_preserve_empty_with_metadata_opts(store.clone(), "config/empty.json", &opts)
+                .await
+                .expect("an existing empty config must retain its payload and metadata");
+            assert!(data.is_empty());
+            assert_eq!(info.size, 0);
+            assert_eq!(info.actual_size, 0);
+            assert_eq!(info.etag.as_deref(), Some("config-1"));
+            assert_eq!(info.data_dir, Some(uuid::Uuid::from_u128(1)));
+            assert_eq!(store.last_get_no_lock.load(Ordering::SeqCst), no_lock);
+        }
+        let err = read_config(store, "config/empty.json")
+            .await
+            .expect_err("the existing reader must still treat empty configs as missing");
+        assert!(matches!(err, Error::ConfigNotFound));
+    }
+
+    #[tokio::test]
+    async fn read_config_preserve_empty_metadata_keeps_payload_and_metadata() {
+        let payload = b"original config bytes".to_vec();
+        let store = Arc::new(RecoveryMockStore::new(RecoveryReadState::Blob(payload.clone()), None));
+        let (data, info) =
+            read_config_preserve_empty_with_metadata_opts(store, "config/nonempty.json", &ObjectOptions::default())
+                .await
+                .expect("a nonempty config must retain its payload and metadata");
+        assert_eq!(data, payload);
+        let size = i64::try_from(payload.len()).expect("test payload size fits i64");
+        assert_eq!(info.size, size);
+        assert_eq!(info.actual_size, size);
+        assert_eq!(info.etag.as_deref(), Some("config-1"));
+        assert_eq!(info.data_dir, Some(uuid::Uuid::from_u128(1)));
+    }
+
+    #[tokio::test]
+    async fn read_config_preserve_empty_metadata_preserves_read_errors() {
+        let missing = Arc::new(RecoveryMockStore::new(RecoveryReadState::Missing, None));
+        let err = read_config_preserve_empty_with_metadata_opts(missing, "config/missing.json", &ObjectOptions::default())
+            .await
+            .expect_err("physical absence must remain ConfigNotFound");
+        assert!(matches!(err, Error::ConfigNotFound));
+        let quorum = Arc::new(RecoveryMockStore::new(RecoveryReadState::QuorumError, None));
+        let err = read_config_preserve_empty_with_metadata_opts(quorum, "config/quorum.json", &ObjectOptions::default())
+            .await
+            .expect_err("a quorum failure must retain its typed read error");
+        assert!(matches!(err, Error::ErasureReadQuorum));
+    }
+
    #[async_trait::async_trait]
    impl StorageAdminApi for RecoveryMockStore {
        type BackendInfo = rustfs_madmin::BackendInfo;
@@ -1,630 +0,0 @@
-// Copyright 2026 RustFS Team
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-use super::*;
-use crate::disk::error::DiskError;
-use crate::storage_api_contracts::namespace::NamespaceLocking as _;
-use codec::{fixture_inline_pool_meta_replicas as replicas, fixture_split_inline_pool_meta_replicas as split};
-use std::path::PathBuf;
-use tokio::fs;
-
-struct PhysicalFixture {
-    _directories: Vec<tempfile::TempDir>,
-    store: Arc<ECStore>,
-    canonical: Vec<u8>,
-    pending: Vec<u8>,
-    identity: Vec<u8>,
-    revision: PoolMetaRevision,
-}
-
-fn object_path(disk: &DiskStore) -> PathBuf {
-    disk.get_object_path_if_local(RUSTFS_META_BUCKET, POOL_META_NAME)
-        .expect("physical fixture must use local disks")
-        .expect("pool metadata path should resolve")
-}
-
-async fn disks(store: &ECStore) -> Vec<Vec<DiskStore>> {
-    let mut all = Vec::with_capacity(store.pools.len());
-    for pool in &store.pools {
-        let set = pool.get_disks_by_key(POOL_META_NAME);
-        let disks = set
-            .disks
-            .read()
-            .await
-            .iter()
-            .cloned()
-            .map(|disk| disk.expect("physical fixture must keep every disk online"))
-            .collect::<Vec<_>>();
-        assert_eq!(disks.len(), 4, "fixture requires an EC 2+2 set");
-        all.push(disks);
-    }
-    all
-}
-
-async fn owner(store: &ECStore) -> Arc<rustfs_lock::NamespaceLockGuard> {
-    let lock = store.pools[0]
-        .new_ns_lock(RUSTFS_META_BUCKET, POOL_META_NAME)
-        .await
-        .expect("real namespace lock should be created");
-    Arc::new(
-        lock.get_write_lock(get_lock_acquire_timeout())
-            .await
-            .expect("physical recovery must hold the namespace writer"),
-    )
-}
-
-fn clean_state(fixture: &PhysicalFixture) -> PoolMetaWriteState {
-    PoolMetaWriteState::for_startup(fixture.revision.cluster_id.expect("fixture V3 revision requires identity"), false)
-}
-
-async fn snapshots(store: &ECStore) -> Vec<Vec<PoolMetaNativeInspection>> {
-    let mut all = Vec::new();
-    for pool in disks(store).await {
-        let mut current = Vec::new();
-        for disk in pool {
-            match disk
-                .pool_meta_native_recovery(Request::Inspect {
-                    object: PoolMetaNativeObject::PoolBin,
-                })
-                .await
-                .expect("physical native inspection should succeed")
-            {
-                Response::Inspected(inspection) => current.push(inspection),
-                _ => panic!("inspection must return a disk snapshot"),
-            }
-        }
-        all.push(current);
-    }
-    all
-}
-
-async fn fixture(split_pools: usize) -> PhysicalFixture {
-    let (directories, store, _other_store) =
-        crate::services::rebalance::test_three_pool_stores_with_four_disk_sets_with_isolated_node_contexts(None).await;
-    persist_v3_pool_meta_for_test(&store).await;
-    let previous = load_pool_meta_replicas(store.pools.clone(), true)
-        .await
-        .expect("baseline V3 pool metadata must be ordinary-readable");
-    let revision = PoolMetaRevision {
-        generation: previous
-            .revision
-            .generation
-            .checked_add(1)
-            .expect("test generation should increment"),
-        transaction_id: Some(uuid::Uuid::new_v4()),
-        ..previous.revision
-    };
-    let candidate = PoolMetaCommittedCandidate {
-        canonical: previous.canonical.expect("baseline must have a canonical V3 COMMIT"),
-        meta: previous.meta.clone(),
-        revision: previous.revision,
-    };
-    let canonical = encode_pool_meta_v3_envelope(&previous.meta, revision, true, None).expect("next COMMIT should encode");
-    let pending =
-        encode_pool_meta_v3_envelope(&previous.meta, revision, false, Some(&candidate)).expect("next PREPARE should encode");
-    let identity = load_pool_meta_identity(
-        store.pools.clone(),
-        revision
-            .cluster_id
-            .expect("baseline V3 metadata should have a cluster identity"),
-    )
-    .await
-    .expect("real initialized identities must agree")
-    .identity
-    .expect("real fixture identity must be present");
-    let identity = encode_pool_meta_identity(identity).expect("real fixture identity should encode canonically");
-    let modified = OffsetDateTime::now_utc();
-    let split = split(&pending, &canonical, modified).await;
-    let commit = replicas(&canonical, modified + Duration::seconds(1)).await;
-    let prepared = replicas(&pending, modified).await;
-    let directory = uuid::Uuid::new_v4();
-    for (pool_index, pool) in disks(&store).await.into_iter().enumerate() {
-        let heads = if pool_index < split_pools { &split } else { &commit };
-        for (disk_index, disk) in pool.into_iter().enumerate() {
-            let object = object_path(&disk);
-            fs::remove_dir_all(&object)
-                .await
-                .expect("fault injection should remove only its own pool.bin fixture");
-            fs::create_dir_all(object.join(directory.to_string()))
-                .await
-                .expect("fixture rollback directory should be created");
-            fs::write(object.join("xl.meta"), &heads[disk_index])
-                .await
-                .expect("physical split head should be installed");
-            fs::write(object.join(directory.to_string()).join("xl.meta.bkp"), &prepared[disk_index])
-                .await
-                .expect("physical PREPARE backup should be installed");
-        }
-    }
-    PhysicalFixture {
-        _directories: directories,
-        store,
-        canonical,
-        pending,
-        identity,
-        revision,
-    }
-}
-
-async fn assert_committed(fixture: &PhysicalFixture) {
-    let confirmed = load_pool_meta_replicas(fixture.store.pools.clone(), true)
-        .await
-        .expect("ordinary full-pool read must succeed after physical recovery");
-    assert_eq!(confirmed.canonical.as_deref(), Some(fixture.canonical.as_slice()));
-    assert_eq!(confirmed.revision, fixture.revision);
-    assert!(!confirmed.replica_state.needs_repair);
-    assert!(confirmed.replica_state.repair_write_safe);
-    for pool in snapshots(&fixture.store).await {
-        let raw = pool
-            .iter()
-            .map(|disk| disk.current.clone().expect("every recovered physical head must exist"))
-            .collect::<Vec<_>>();
-        assert_eq!(
-            codec::decode_inline_pool_meta_replicas(&raw)
-                .await
-                .expect("every recovered shard must verify"),
-            vec![Bytes::copy_from_slice(&fixture.canonical)]
-        );
-    }
-}
-
-#[tokio::test]
-#[serial_test::serial(pool_meta_version_env)]
-async fn pool_meta_native_physical_split_repair_completes_normal_cas_and_quorum_readback() {
-    let fixture = fixture(1).await;
-    let before = read_pool_meta_replicas(fixture.store.pools.clone(), true).await;
-    assert!(matches!(before[0].replica, PoolMetaReplica::Unreadable(_)));
-    assert!(matches!(before[1].replica, PoolMetaReplica::Valid { committed: true, .. }));
-    let mut state = clean_state(&fixture);
-    let fence = PoolMetaPersistenceFence::Owned(owner(&fixture.store).await);
-    assert!(
-        repair(&fixture.store, &mut state, &fence)
-            .await
-            .expect("healthy ordinary COMMIT must authorize physical repair")
-    );
-    state
-        .ensure_write_safe("physical recovery readback")
-        .expect("completed recovery must disarm its transaction");
-    assert_committed(&fixture).await;
-}
-
-#[tokio::test]
-#[serial_test::serial(pool_meta_version_env)]
-async fn pool_meta_native_physical_split_without_ordinary_commit_performs_no_mutation() {
-    let fixture = fixture(3).await;
-    let before = snapshots(&fixture.store).await;
-    let mut state = clean_state(&fixture);
-    let fence = PoolMetaPersistenceFence::Owned(owner(&fixture.store).await);
-    assert!(
-        repair(&fixture.store, &mut state, &fence).await.is_err(),
-        "reconstruction alone must never authorize a COMMIT"
-    );
-    assert_eq!(
-        snapshots(&fixture.store).await,
-        before,
-        "all current heads, identities and complete backups must remain unchanged"
-    );
-    assert_eq!(state.active_transactions.load(Ordering::SeqCst), 0);
-}
-
-struct IdentityEpochFork {
-    path: PathBuf,
-    original: Bytes,
-    replacement: Bytes,
-    original_identity: PersistedPoolMetaIdentity,
-}
-
-async fn identity_epoch_fork(fixture: &PhysicalFixture) -> IdentityEpochFork {
-    let identity_set = fixture.store.pools[0].get_disks_by_key(POOL_META_IDENTITY_NAME);
-    assert!(
-        !Arc::ptr_eq(&identity_set, &fixture.store.pools[0].get_disks_by_key(POOL_META_NAME)),
-        "the identity evidence must come from its independently placed physical set"
-    );
-    let identity_disks = identity_set
-        .disks
-        .read()
-        .await
-        .iter()
-        .cloned()
-        .map(|disk| disk.expect("actual identity set must retain all four disks"))
-        .collect::<Vec<_>>();
-    let mut raw = Vec::with_capacity(identity_disks.len());
-    for disk in &identity_disks {
-        match disk
-            .pool_meta_native_recovery(Request::InspectIdentity {})
-            .await
-            .expect("actual identity set must support native inspection")
-        {
-            Response::IdentityInspected { disk_id, raw: current } => {
-                assert!(!disk_id.is_nil());
-                raw.push(current);
-            }
-            _ => panic!("identity inspection must return its physical raw shard"),
-        }
-    }
-    assert_eq!(raw.len(), 4);
-    let original_identity = match decode_pool_meta_identity(&fixture.identity) {
-        PoolMetaIdentityReplica::Valid(identity) => identity,
-        _ => panic!("fixture must provide a valid initialized identity"),
-    };
-    let forked_identity = PersistedPoolMetaIdentity {
-        epoch: original_identity
-            .epoch
-            .checked_add(1)
-            .expect("test identity epoch should increment"),
-        ..original_identity
-    };
-    let forked = encode_pool_meta_identity(forked_identity).expect("foreign epoch identity should remain validly encoded");
-    assert!(matches!(decode_pool_meta_identity(&forked), PoolMetaIdentityReplica::Valid(_)));
-    let modified = raw
-        .iter()
-        .map(|raw| {
-            codec::parse_inline_info(raw)
-                .expect("actual identity shard layout should parse")
-                .mod_time
-        })
-        .collect::<Option<Vec<_>>>()
-        .expect("every actual identity shard should have a modification time")
-        .into_iter()
-        .max()
-        .expect("actual identity set should contain four shards")
-        + Duration::nanoseconds(1);
-    let replacements = codec::encode_inline_pool_meta_replicas(&raw, &forked, modified)
-        .await
-        .expect("epoch fork must retain the actual set's valid erasure layout");
-    assert_eq!(
-        codec::parse_inline_info(&raw[0]).expect("original layout").erasure,
-        codec::parse_inline_info(&replacements[0])
-            .expect("replacement layout")
-            .erasure
-    );
-    codec::validate_inline_pool_meta_shard(&replacements[0], 0, &forked)
-        .await
-        .expect("forked shard must pass the physical integrity checks");
-    let identity_path = identity_disks[0]
-        .get_object_path_if_local(RUSTFS_META_BUCKET, POOL_META_IDENTITY_NAME)
-        .expect("identity fixture must use local storage")
-        .expect("actual identity metadata path should resolve");
-    IdentityEpochFork {
-        path: identity_path.join("xl.meta"),
-        original: raw[0].clone(),
-        replacement: replacements[0].clone(),
-        original_identity,
-    }
-}
-
-#[tokio::test]
-#[serial_test::serial(pool_meta_version_env)]
-async fn pool_meta_native_physical_identity_actual_set_minority_epoch_fork_performs_no_apply() {
-    let fixture = fixture(1).await;
-    let fork = identity_epoch_fork(&fixture).await;
-    let heads = |pools: Vec<Vec<PoolMetaNativeInspection>>| {
-        pools
-            .into_iter()
-            .map(|pool| pool.into_iter().map(|disk| (disk.current, disk.backups)).collect::<Vec<_>>())
-            .collect::<Vec<_>>()
-    };
-    let before = heads(snapshots(&fixture.store).await);
-    fs::write(&fork.path, &fork.replacement)
-        .await
-        .expect("only one actual identity-set disk should receive the epoch fork");
-    let selected = load_pool_meta_identity(fixture.store.pools.clone(), fork.original_identity.cluster_id)
-        .await
-        .expect("three matching identity shards must remain ordinary-readable");
-    assert_eq!(selected.identity, Some(fork.original_identity));
-    let reads = read_pool_meta_replicas(fixture.store.pools.clone(), true).await;
-    assert!(matches!(reads[0].replica, PoolMetaReplica::Unreadable(_)));
-    assert!(matches!(reads[1].replica, PoolMetaReplica::Valid { committed: true, .. }));
-    let mut state = clean_state(&fixture);
-    let fence = PoolMetaPersistenceFence::Owned(owner(&fixture.store).await);
-    let error = repair(&fixture.store, &mut state, &fence)
-        .await
-        .expect_err("ordinary identity quorum must not hide a physical minority epoch fork");
-    assert_eq!(
-        error
-            .pool_metadata_failure()
-            .expect("known identity fork must retain typed failure")
-            .kind,
-        crate::error::PoolMetadataFailure::RecoveryRequired
-    );
-    assert!(state.write_blocked, "known minority fork must latch the write gate");
-    assert_eq!(
-        heads(snapshots(&fixture.store).await),
-        before,
-        "identity rejection must precede every pool.bin Apply"
-    );
-    assert_eq!(state.active_transactions.load(Ordering::SeqCst), 0);
-    fs::write(&fork.path, &fork.original)
-        .await
-        .expect("restoring the input identity must not clear the observed fork latch");
-    let error = repair(&fixture.store, &mut state, &fence)
-        .await
-        .expect_err("the same state must retain operator recovery after identity becomes consistent");
-    assert_eq!(
-        error
-            .pool_metadata_failure()
-            .expect("sticky failure must retain its classification")
-            .kind,
-        crate::error::PoolMetadataFailure::RecoveryRequired
-    );
-    assert!(state.write_blocked);
-    assert_eq!(heads(snapshots(&fixture.store).await), before);
-}
-
-#[tokio::test]
-#[serial_test::serial(pool_meta_version_env)]
-async fn pool_meta_native_physical_runtime_fork_after_apply_latches_original_gate() {
-    let fixture = fixture(1).await;
-    let fork = identity_epoch_fork(&fixture).await;
-    let since = OffsetDateTime::from_unix_timestamp(1_700_000_000).expect("fixed original failure timestamp should be valid");
-    {
-        let mut state = fixture.store.pool_meta_save_gate.lock().await;
-        assert_eq!(state.active_transactions.load(Ordering::SeqCst), 0);
-        state.write_blocked = false;
-        state.block_context = None;
-        state.aborted_transaction.store(true, Ordering::SeqCst);
-        let mut failure = pool_metadata_error(crate::error::PoolMetadataFailure::TransactionUnknown, "commit_cas", None);
-        failure.since = since;
-        *state
-            .transaction_failure
-            .lock()
-            .expect("original transaction failure mutex should lock") = Some(failure);
-        *state
-            .block_started_at
-            .lock()
-            .expect("original block timestamp mutex should lock") = Some(since);
-    }
-    let pause = Arc::new(NativeApplyPause {
-        reached: tokio::sync::Notify::new(),
-        resume: tokio::sync::Notify::new(),
-    });
-    let reached = pause.reached.notified();
-    tokio::pin!(reached);
-    reached.as_mut().enable();
-    let recovery = tokio::spawn({
-        let store = Arc::clone(&fixture.store);
-        let pause = Arc::clone(&pause);
-        async move {
-            AFTER_NATIVE_APPLY
-                .scope(pause, async move { store.recover_pool_meta_transaction().await })
-                .await
-        }
-    });
-    tokio::time::timeout(std::time::Duration::from_secs(10), reached)
-        .await
-        .expect("real runtime recovery should pause after completing physical Apply");
-    let readable = load_pool_meta_replicas(fixture.store.pools.clone(), true)
-        .await
-        .expect("physical Apply must already make every pool ordinary-readable");
-    assert_eq!(readable.canonical.as_deref(), Some(fixture.canonical.as_slice()));
-    fs::write(&fork.path, &fork.replacement)
-        .await
-        .expect("a valid minority identity fork should arrive after physical repair");
-    pause.resume.notify_one();
-    let error = tokio::time::timeout(std::time::Duration::from_secs(10), recovery)
-        .await
-        .expect("resumed runtime recovery should finish its validation")
-        .expect("runtime recovery task should not panic")
-        .expect_err("post-Apply identity fork must reject runtime recovery");
-    assert_eq!(
-        error
-            .pool_metadata_failure()
-            .expect("runtime fork failure must remain typed")
-            .kind,
-        crate::error::PoolMetadataFailure::RecoveryRequired
-    );
-    assert_committed(&fixture).await;
-    {
-        let state = fixture.store.pool_meta_save_gate.lock().await;
-        assert!(
-            state.write_blocked,
-            "candidate validation must propagate its permanent latch to the original state"
-        );
-        let context = state
-            .block_context
-            .as_ref()
-            .expect("original state must retain the known fork context");
-        assert_eq!(context.kind, crate::error::PoolMetadataFailure::RecoveryRequired);
-        assert_eq!(context.since, since, "candidate failure must preserve the original outage timestamp");
-        assert_eq!(*state.block_started_at.lock().expect("original block timestamp should lock"), Some(since));
-    }
-    assert!(
-        !fixture
-            .store
-            .recover_pool_meta_transaction()
-            .await
-            .expect("permanently blocked recovery should return without mutation"),
-        "ordinary-readable repaired heads must not clear the original known-fork latch"
-    );
-    let state = fixture.store.pool_meta_save_gate.lock().await;
-    assert!(state.write_blocked);
-    assert_eq!(
-        state
-            .block_context
-            .as_ref()
-            .expect("sticky fork context must remain present")
-            .since,
-        since
-    );
-}
-
-#[tokio::test]
-#[serial_test::serial(pool_meta_version_env)]
-async fn pool_meta_native_physical_partial_apply_resumes_after_conditional_rejection() {
-    let fixture = fixture(1).await;
-    let fence = PoolMetaPersistenceFence::Owned(owner(&fixture.store).await);
-    let inspected = inspect(&fixture.store.pools, &fence)
-        .await
-        .expect("real native snapshots should be obtained");
-    let replacements = plan(&inspected, &fixture.canonical, fixture.revision, &fixture.identity)
-        .await
-        .expect("physical recovery plan should validate");
-    let snapshot = &inspected[0].snapshots[0];
-    assert_eq!(
-        inspected[0].disks[0]
-            .pool_meta_native_recovery(Request::Apply {
-                object: PoolMetaNativeObject::PoolBin,
-                expected_disk_id: snapshot.disk_id,
-                expected_current_sha256: snapshot.current.as_ref().map(|raw| Sha256::digest(raw).into()),
-                expected_backup_inventory_sha256: snapshot.inventory_sha256().expect("snapshot inventory should hash"),
-                replacement: replacements[0][0].clone(),
-            })
-            .await
-            .expect("first real Apply must atomically publish and sync"),
-        Response::Applied
-    );
-    let before_rejected = snapshots(&fixture.store).await;
-    let snapshot = &inspected[0].snapshots[1];
-    let mut stale_inventory = snapshot.inventory_sha256().expect("snapshot inventory should hash");
-    stale_inventory[0] ^= 1;
-    assert!(matches!(
-        inspected[0].disks[1]
-            .pool_meta_native_recovery(Request::Apply {
-                object: PoolMetaNativeObject::PoolBin,
-                expected_disk_id: snapshot.disk_id,
-                expected_current_sha256: snapshot.current.as_ref().map(|raw| Sha256::digest(raw).into()),
-                expected_backup_inventory_sha256: stale_inventory,
-                replacement: replacements[0][1].clone(),
-            })
-            .await,
-        Err(DiskError::ConditionalDeleteConflict)
-    ));
-    assert_eq!(
-        snapshots(&fixture.store).await,
-        before_rejected,
-        "rejected Apply must preserve the partial repair evidence"
-    );
-    drop(inspected);
-    drop(fence);
-    let fence = PoolMetaPersistenceFence::Owned(owner(&fixture.store).await);
-    let mut state = clean_state(&fixture);
-    assert!(
-        repair(&fixture.store, &mut state, &fence)
-            .await
-            .expect("a fresh owner should resume the partial physical repair")
-    );
-    assert_committed(&fixture).await;
-}
-
-#[tokio::test]
-#[serial_test::serial(pool_meta_version_env)]
-async fn pool_meta_native_physical_noninline_conditional_io_round_trip() {
-    let fixture = fixture(0).await;
-    let pool = Arc::clone(&fixture.store.pools[0]);
-    let fence = PoolMetaPersistenceFence::Owned(owner(&fixture.store).await);
-    let (original, info) = read_config_no_lock_preserve_empty_with_metadata(Arc::clone(&pool), POOL_META_NAME)
-        .await
-        .expect("baseline conditional object must be readable");
-    let token = pool_meta_cas_token_from_info(info);
-    // This smoke test targets the physical conditional I/O boundary. The large
-    // opaque body deliberately exceeds the inline writer's one-block limit.
-    let payload = vec![0x5a; rustfs_filemeta::BLOCK_SIZE_V2 + 137];
-    let state = clean_state(&fixture);
-    let mut arm = state.arm_transaction();
-    save_pool_meta_object_cas(
-        Arc::clone(&pool),
-        POOL_META_NAME,
-        payload.clone(),
-        &token,
-        &fence,
-        "noninline_smoke",
-        &mut arm,
-    )
-    .await
-    .expect("normal native CAS must support noninline pool metadata storage");
-    let (readback, info) = read_config_no_lock_preserve_empty_with_metadata(Arc::clone(&pool), POOL_META_NAME)
-        .await
-        .expect("noninline conditional write must be ordinary-readable");
-    assert_eq!(readback, payload);
-    for disk in &snapshots(&fixture.store).await[0] {
-        let raw = disk
-            .current
-            .as_ref()
-            .expect("noninline head should be installed on every disk");
-        let info = rustfs_filemeta::get_file_info(
-            raw,
-            RUSTFS_META_BUCKET,
-            POOL_META_NAME,
-            "",
-            rustfs_filemeta::FileInfoOpts {
-                data: true,
-                include_free_versions: false,
-                include_part_checksums: true,
-            },
-        )
-        .expect("physical noninline metadata should decode");
-        assert!(!info.inline_data());
-        assert!(info.data.is_none());
-    }
-    save_pool_meta_object_cas(
-        pool,
-        POOL_META_NAME,
-        original.clone(),
-        &pool_meta_cas_token_from_info(info),
-        &fence,
-        "noninline_to_inline_smoke",
-        &mut arm,
-    )
-    .await
-    .expect("normal CAS must also replace a noninline parent with inline metadata");
-    arm.disarm();
-    assert_committed(&fixture).await;
-}
-
-#[tokio::test]
-#[serial_test::serial(pool_meta_version_env)]
-async fn pool_meta_native_physical_three_plus_one_checkpoint_converges_all_shards() {
-    let fixture = fixture(0).await;
-    let pending = replicas(&fixture.pending, OffsetDateTime::now_utc() - Duration::seconds(1)).await;
-    let all_disks = disks(&fixture.store).await;
-    fs::write(object_path(&all_disks[0][0]).join("xl.meta"), &pending[0])
-        .await
-        .expect("one stale physical PREPARE head should be installed");
-    let selection = load_pool_meta_replicas(fixture.store.pools.clone(), true)
-        .await
-        .expect("three matching COMMIT shards must remain ordinary-readable");
-    assert_eq!(selection.canonical.as_deref(), Some(fixture.canonical.as_slice()));
-    let guard = owner(&fixture.store).await;
-    let fence = PoolMetaPersistenceFence::Owned(Arc::clone(&guard));
-    let mut state = clean_state(&fixture);
-    assert!(
-        !repair(&fixture.store, &mut state, &fence)
-            .await
-            .expect("ordinary-readable pools should use normal checkpoint recovery")
-    );
-    selection
-        .meta
-        .save_for_startup_guarded(fixture.store.pools.clone(), &mut state, guard)
-        .await
-        .expect("normal checkpoint must converge a readable 3+1 pool without an unsafe native overwrite");
-    let checkpoint = load_pool_meta_replicas(fixture.store.pools.clone(), true)
-        .await
-        .expect("checkpoint must remain ordinary-readable across all pools");
-    assert!(!checkpoint.replica_state.needs_repair);
-    assert!(checkpoint.replica_state.repair_write_safe);
-    assert!(checkpoint.revision.generation > fixture.revision.generation);
-    let canonical = checkpoint.canonical.expect("checkpoint should expose a canonical COMMIT");
-    for pool in snapshots(&fixture.store).await {
-        let raw = pool
-            .into_iter()
-            .map(|disk| disk.current.expect("checkpoint head must exist"))
-            .collect::<Vec<_>>();
-        assert_eq!(
-            codec::decode_inline_pool_meta_replicas(&raw)
-                .await
-                .expect("all four checkpoint shards must verify"),
-            vec![Bytes::copy_from_slice(&canonical)]
-        );
-    }
-}
@@ -1,736 +0,0 @@
-// Copyright 2026 RustFS Team
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-use super::pool_meta_recovery_codec as codec;
-use super::*;
-use crate::disk::{
-    DiskAPI, DiskStore, PoolMetaNativeInspection, PoolMetaNativeObject, PoolMetaNativeRecoveryRequest as Request,
-    PoolMetaNativeRecoveryResponse as Response,
-};
-use bytes::Bytes;
-
-#[cfg(test)]
-#[derive(Default)]
-pub(super) struct NativeApplyPause {
-    pub(super) reached: tokio::sync::Notify,
-    pub(super) resume: tokio::sync::Notify,
-}
-
-#[cfg(test)]
-tokio::task_local! {
-    pub(super) static AFTER_NATIVE_APPLY: Arc<NativeApplyPause>;
-}
-
-struct InspectedPool {
-    disks: Vec<DiskStore>,
-    snapshots: Vec<PoolMetaNativeInspection>,
-}
-
-fn invalid() -> Error {
-    Error::other("native pool metadata recovery requires one proven V3 transaction and complete matching disk evidence")
-}
-
-fn known_validation(source: Error, phase: &'static str) -> Error {
-    Error::other(pool_metadata_error(
-        crate::error::PoolMetadataFailure::RecoveryRequired,
-        phase,
-        Some(Arc::new(source)),
-    ))
-}
-
-fn codec_validation(source: codec::PoolMetaCodecError, phase: &'static str) -> Error {
-    // A supported transport may carry a valid layout outside this narrow
-    // recovery codec. That is not evidence of corruption or a transaction fork.
-    if matches!(source, codec::PoolMetaCodecError::UnsupportedLayout) {
-        return Error::other(source);
-    }
-    known_validation(Error::other(source), phase)
-}
-
-fn latch_validation(state: &mut PoolMetaWriteState, error: Error) -> Error {
-    if let Some(context) = error.pool_metadata_failure()
-        && context.kind == crate::error::PoolMetadataFailure::RecoveryRequired
-    {
-        state.block_with_context(context.clone());
-    }
-    error
-}
-
-fn current(pool: &InspectedPool) -> Result<Vec<Bytes>> {
-    pool.snapshots
-        .iter()
-        .map(|snapshot| snapshot.current.clone().ok_or_else(invalid))
-        .collect()
-}
-
-async fn inspect(pools: &[Arc<Sets>], fence: &PoolMetaPersistenceFence<'_>) -> Result<Vec<InspectedPool>> {
-    let mut inspected = Vec::with_capacity(pools.len());
-    // Pool -> disk order is stable; all capability probes precede every mutation.
-    for pool in pools {
-        fence.ensure_held()?;
-        let set = pool.get_disks_by_key(POOL_META_NAME);
-        let disks = set
-            .disks
-            .read()
-            .await
-            .iter()
-            .cloned()
-            .map(|disk| disk.ok_or_else(invalid))
-            .collect::<Result<Vec<_>>>()?;
-        let probes = futures::stream::iter(disks.iter().cloned().map(|disk| async move {
-            match disk.pool_meta_native_recovery(Request::Probe {}).await? {
-                Response::Probed => Ok(()),
-                _ => Err(invalid()),
-            }
-        }))
-        .buffered(4)
-        .collect::<Vec<Result<()>>>()
-        .await;
-        for result in probes {
-            result?;
-        }
-        inspected.push(InspectedPool {
-            disks,
-            snapshots: Vec::new(),
-        });
-    }
-    for pool in &mut inspected {
-        fence.ensure_held()?;
-        let results = futures::stream::iter(pool.disks.iter().cloned().map(|disk| async move {
-            match disk
-                .pool_meta_native_recovery(Request::Inspect {
-                    object: PoolMetaNativeObject::PoolBin,
-                })
-                .await?
-            {
-                Response::Inspected(snapshot) if !snapshot.disk_id.is_nil() => Ok(snapshot),
-                _ => Err(invalid()),
-            }
-        }))
-        .buffered(4)
-        .collect::<Vec<Result<PoolMetaNativeInspection>>>()
-        .await;
-        for result in results {
-            pool.snapshots.push(result?);
-        }
-    }
-    fence.ensure_held()?;
-    Ok(inspected)
-}
-
-async fn validate_identities(pools: &[Arc<Sets>], canonical: &[u8], fence: &PoolMetaPersistenceFence<'_>) -> Result<()> {
-    for pool in pools {
-        fence.ensure_held()?;
-        // Identity and pool.bin have independent placement hashes. Read every
-        // member of the identity's actual set instead of assuming co-location.
-        let set = pool.get_disks_by_key(POOL_META_IDENTITY_NAME);
-        let disks = set
-            .disks
-            .read()
-            .await
-            .iter()
-            .cloned()
-            .map(|disk| disk.ok_or_else(invalid))
-            .collect::<Result<Vec<_>>>()?;
-        let results = futures::stream::iter(disks.into_iter().enumerate().map(|(index, disk)| async move {
-            match disk.pool_meta_native_recovery(Request::InspectIdentity {}).await? {
-                Response::IdentityInspected { disk_id, raw } if !disk_id.is_nil() => {
-                    codec::validate_inline_pool_meta_shard(&raw, index, canonical)
-                        .await
-                        .map_err(|error| codec_validation(error, "native_identity_validation"))
-                }
-                _ => Err(invalid()),
-            }
-        }))
-        .buffered(4)
-        .collect::<Vec<Result<()>>>()
-        .await;
-        for result in results {
-            result?;
-        }
-    }
-    fence.ensure_held()
-}
-
-async fn plan(
-    inspected: &[InspectedPool],
-    canonical: &[u8],
-    revision: PoolMetaRevision,
-    identity: &[u8],
-) -> Result<Vec<Vec<Bytes>>> {
-    let mut pending = Vec::<Vec<u8>>::new();
-    let mut predecessors = Vec::<Vec<u8>>::new();
-    let mut decoded = Vec::<Vec<u8>>::new();
-    let mut newest = OffsetDateTime::now_utc();
-    for pool in inspected {
-        let current = current(pool)?;
-        for (index, snapshot) in pool.snapshots.iter().enumerate() {
-            if let Some(local_identity) = snapshot.identity.as_ref() {
-                codec::validate_inline_pool_meta_shard(local_identity, index, identity)
-                    .await
-                    .map_err(|error| codec_validation(error, "native_metadata_validation"))?;
-            }
-            for raw in std::iter::once(current[index].clone()).chain(snapshot.backups.iter().map(|backup| backup.data.clone())) {
-                let info =
-                    codec::parse_inline_info(&raw).map_err(|error| codec_validation(error, "native_metadata_validation"))?;
-                newest = newest.max(info.mod_time.ok_or_else(invalid)?);
-            }
-        }
-        let mut inventories = vec![current.clone()];
-        let directories = pool
-            .snapshots
-            .iter()
-            .flat_map(|snapshot| snapshot.backups.iter().map(|backup| backup.directory))
-            .collect::<HashSet<_>>();
-        for directory in directories {
-            // A missing backup contributes its actual current shard only to
-            // integrity reconstruction. It never invents backup evidence.
-            inventories.push(
-                pool.snapshots
-                    .iter()
-                    .enumerate()
-                    .map(|(index, snapshot)| {
-                        snapshot
-                            .backups
-                            .iter()
-                            .find(|backup| backup.directory == directory)
-                            .map(|backup| backup.data.clone())
-                            .unwrap_or_else(|| current[index].clone())
-                    })
-                    .collect(),
-            );
-        }
-        for raw in inventories {
-            for generation in codec::decode_inline_pool_meta_replicas(&raw)
-                .await
-                .map_err(|error| codec_validation(error, "native_metadata_validation"))?
-            {
-                let payload = generation.to_vec();
-                if !decoded.contains(&payload) {
-                    decoded.push(payload);
-                }
-            }
-        }
-    }
-    let mut obsolete = Vec::<Vec<u8>>::new();
-    for payload in &decoded {
-        match decode_pool_meta_replica(payload.clone()) {
-            PoolMetaReplica::Valid {
-                canonical: candidate,
-                revision: candidate_revision,
-                committed: false,
-                previous: Some(previous),
-                ..
-            } if candidate_revision == revision && candidate == canonical => {
-                if !pending.contains(payload) {
-                    pending.push(payload.clone());
-                }
-                if !predecessors.contains(&previous.canonical) {
-                    predecessors.push(previous.canonical);
-                }
-            }
-            PoolMetaReplica::Valid { revision: older, .. }
-                if older.is_generation_protocol()
-                    && older.cluster_id == revision.cluster_id
-                    && older.epoch == revision.epoch
-                    && older.generation < revision.generation =>
-            {
-                // Retained evidence from an earlier successful recovery is
-                // obsolete, not a competing commit authority. It remains
-                // fully reconstructed and bound into the native CAS.
-                obsolete.push(payload.clone());
-            }
-            PoolMetaReplica::Valid {
-                canonical: candidate,
-                revision: candidate_revision,
-                committed: true,
-                ..
-            } if candidate_revision == revision && candidate == canonical => {}
-            PoolMetaReplica::Valid { revision: conflict, .. } if conflict.is_generation_protocol() => {
-                return Err(known_validation(
-                    Error::other("native V3 transaction conflicts with committed authority"),
-                    "native_transaction_validation",
-                ));
-            }
-            PoolMetaReplica::Corrupt(_) | PoolMetaReplica::Incompatible(_) => {
-                return Err(known_validation(
-                    Error::other("native V3 payload is corrupt or incompatible"),
-                    "native_transaction_validation",
-                ));
-            }
-            _ => {}
-        }
-    }
-    if pending.len() > 1 {
-        return Err(known_validation(
-            Error::other("native V3 prepare records disagree on the predecessor"),
-            "native_transaction_validation",
-        ));
-    }
-    if pending.is_empty() {
-        return Err(invalid());
-    }
-    for payload in &decoded {
-        if payload.as_slice() != canonical
-            && !pending.contains(payload)
-            && !predecessors.contains(payload)
-            && !obsolete.contains(payload)
-        {
-            return Err(invalid());
-        }
-    }
-    for pool in inspected {
-        for (index, snapshot) in pool.snapshots.iter().enumerate() {
-            let raw = snapshot.current.as_ref().ok_or_else(invalid)?;
-            let mut matched = false;
-            for payload in std::iter::once(canonical).chain(pending.iter().map(Vec::as_slice)) {
-                matched |= codec::validate_inline_pool_meta_shard(raw, index, payload).await.is_ok();
-            }
-            if !matched {
-                return Err(invalid());
-            }
-            for backup in &snapshot.backups {
-                let mut matched = false;
-                for payload in std::iter::once(canonical).chain(
-                    pending
-                        .iter()
-                        .chain(predecessors.iter())
-                        .chain(obsolete.iter())
-                        .map(Vec::as_slice),
-                ) {
-                    matched |= codec::validate_inline_pool_meta_shard(&backup.data, index, payload)
-                        .await
-                        .is_ok();
-                }
-                if !matched {
-                    return Err(invalid());
-                }
-            }
-        }
-    }
-    let modified = newest.checked_add(Duration::nanoseconds(1)).ok_or_else(invalid)?;
-    let mut replacements = Vec::with_capacity(inspected.len());
-    for pool in inspected {
-        replacements.push(
-            codec::encode_inline_pool_meta_replicas(&current(pool)?, canonical, modified)
-                .await
-                .map_err(|error| codec_validation(error, "native_metadata_validation"))?,
-        );
-    }
-    Ok(replacements)
-}
-
-pub(super) async fn repair(
-    store: &ECStore,
-    state: &mut PoolMetaWriteState,
-    fence: &PoolMetaPersistenceFence<'_>,
-) -> Result<bool> {
-    fence.ensure_held()?;
-    let reads = read_pool_meta_replicas(store.pools.clone(), true).await;
-    if !reads
-        .iter()
-        .any(|read| matches!(read.replica, PoolMetaReplica::Unreadable(_)))
-    {
-        return Ok(false);
-    }
-    state.ensure_write_safe("native pool metadata recovery")?;
-    if reads
-        .iter()
-        .any(|read| matches!(read.replica, PoolMetaReplica::Corrupt(_) | PoolMetaReplica::Incompatible(_)))
-    {
-        return Err(latch_validation(
-            state,
-            known_validation(Error::other("pool metadata is corrupt or incompatible"), "native_metadata_validation"),
-        ));
-    }
-    if reads
-        .iter()
-        .any(|read| !matches!(read.replica, PoolMetaReplica::Valid { .. } | PoolMetaReplica::Unreadable(_)))
-    {
-        return Err(invalid());
-    }
-    // Only an ordinary, successfully read COMMIT grants authority. Rebuilding
-    // two erasure shards below proves integrity, never a commit decision.
-    let ordinary_commits = reads
-        .iter()
-        .filter_map(|read| match &read.replica {
-            PoolMetaReplica::Valid {
-                raw,
-                canonical,
-                revision,
-                committed: true,
-                ..
-            } if revision.is_generation_protocol() && raw == canonical => Some((canonical.clone(), *revision)),
-            _ => None,
-        })
-        .collect::<Vec<_>>();
-    if ordinary_commits.is_empty() {
-        return Err(invalid());
-    }
-    let selection = select_pool_meta_replica_reads(reads)
-        .map_err(|error| latch_validation(state, known_validation(error, "native_metadata_validation")))?;
-    state
-        .validate_selection(&selection)
-        .map_err(|error| latch_validation(state, known_validation(error, "native_metadata_validation")))?;
-    if selection.meta.pools.len() != store.pools.len()
-        || selection
-            .meta
-            .pools
-            .iter()
-            .zip(&store.pools)
-            .enumerate()
-            .any(|(index, (meta, pool))| meta.id != index || meta.cmd_line != pool.endpoints.cmd_line)
-    {
-        return Err(invalid());
-    }
-    let canonical = selection.canonical.as_ref().ok_or_else(invalid)?;
-    if !selection.revision.is_generation_protocol()
-        || !ordinary_commits
-            .iter()
-            .any(|(raw, revision)| raw == canonical && *revision == selection.revision)
-    {
-        return Err(invalid());
-    }
-    let cluster_id = selection.revision.cluster_id.ok_or_else(invalid)?;
-    if state.expected_cluster_id != Some(cluster_id) {
-        return Err(invalid());
-    }
-    let identities = join_all(store.pools.iter().cloned().map(read_pool_meta_identity_replica)).await;
-    if identities.iter().any(|read| {
-        matches!(
-            read.replica,
-            PoolMetaIdentityReplica::Corrupt(_) | PoolMetaIdentityReplica::Incompatible(_)
-        )
-    }) {
-        return Err(latch_validation(
-            state,
-            known_validation(Error::other("pool identity is corrupt or incompatible"), "native_identity_validation"),
-        ));
-    }
-    if identities
-        .iter()
-        .any(|read| !matches!(read.replica, PoolMetaIdentityReplica::Valid(_)))
-    {
-        return Err(invalid());
-    }
-    let identity = select_pool_meta_identity(identities, cluster_id)
-        .map_err(|error| latch_validation(state, known_validation(error, "native_identity_validation")))?;
-    state
-        .validate_identity(&identity)
-        .map_err(|error| latch_validation(state, known_validation(error, "native_identity_validation")))?;
-    let identity = identity.identity.ok_or_else(invalid)?;
-    if !identity.initialized {
-        return Err(invalid());
-    }
-    if identity.epoch != selection.revision.epoch {
-        return Err(latch_validation(
-            state,
-            known_validation(Error::other("pool identity epoch conflicts with metadata"), "native_identity_validation"),
-        ));
-    }
-    let identity_bytes = encode_pool_meta_identity(identity)?;
-    let repair_started = std::time::Instant::now();
-    validate_identities(&store.pools, &identity_bytes, fence)
-        .await
-        .map_err(|error| latch_validation(state, error))?;
-    let inspected = inspect(&store.pools, fence).await?;
-    let replacements = plan(&inspected, canonical, selection.revision, &identity_bytes)
-        .await
-        .map_err(|error| latch_validation(state, error))?;
-    fence.ensure_held()?;
-    let mut arm = state.arm_transaction();
-    arm.phase = Some("native_repair_apply");
-    for (pool, replacements) in inspected.iter().zip(replacements) {
-        for ((disk, snapshot), replacement) in pool.disks.iter().zip(&pool.snapshots).zip(replacements) {
-            fence.ensure_held()?;
-            let request = Request::Apply {
-                object: PoolMetaNativeObject::PoolBin,
-                expected_disk_id: snapshot.disk_id,
-                expected_current_sha256: snapshot.current.as_ref().map(|raw| Sha256::digest(raw).into()),
-                expected_backup_inventory_sha256: snapshot.inventory_sha256()?,
-                replacement,
-            };
-            match disk.pool_meta_native_recovery(request).await? {
-                Response::Applied => {}
-                _ => return Err(invalid()),
-            }
-        }
-    }
-    #[cfg(test)]
-    if let Ok(pause) = AFTER_NATIVE_APPLY.try_with(Arc::clone) {
-        pause.reached.notify_one();
-        pause.resume.notified().await;
-    }
-    fence.ensure_held()?;
-    let confirmed = load_pool_meta_replicas(store.pools.clone(), true).await?;
-    if confirmed.canonical.as_ref() != Some(canonical)
-        || confirmed.revision != selection.revision
-        || !confirmed.replica_state.repair_write_safe
-        || confirmed.replica_state.needs_repair
-    {
-        return Err(invalid());
-    }
-    // Re-enter the normal V3 conditional-write path, including native CAS,
-    // full tail completion, and the final ordinary quorum readback.
-    for (pool, token) in store.pools.iter().cloned().zip(&confirmed.cas_tokens) {
-        save_pool_meta_object_cas(pool, POOL_META_NAME, canonical.clone(), token, fence, "native_repair_confirm", &mut arm)
-            .await?;
-    }
-    let confirmed = load_pool_meta_replicas(store.pools.clone(), true).await?;
-    if confirmed.canonical.as_ref() != Some(canonical)
-        || confirmed.revision != selection.revision
-        || confirmed.replica_state.needs_repair
-        || !confirmed.replica_state.repair_write_safe
-    {
-        return Err(invalid());
-    }
-    validate_identities(&store.pools, &identity_bytes, fence)
-        .await
-        .map_err(|error| latch_validation(state, error))?;
-    let identities = join_all(store.pools.iter().cloned().map(read_pool_meta_identity_replica)).await;
-    if identities.iter().any(|read| {
-        matches!(
-            read.replica,
-            PoolMetaIdentityReplica::Corrupt(_) | PoolMetaIdentityReplica::Incompatible(_)
-        )
-    }) {
-        return Err(latch_validation(
-            state,
-            known_validation(Error::other("pool identity is corrupt or incompatible"), "native_identity_validation"),
-        ));
-    }
-    if identities
-        .iter()
-        .any(|read| !matches!(read.replica, PoolMetaIdentityReplica::Valid(_)))
-    {
-        return Err(invalid());
-    }
-    let identity = select_pool_meta_identity(identities, cluster_id)
-        .map_err(|error| latch_validation(state, known_validation(error, "native_identity_validation")))?;
-    state
-        .validate_identity(&identity)
-        .map_err(|error| latch_validation(state, known_validation(error, "native_identity_validation")))?;
-    if identity.identity.map(encode_pool_meta_identity).transpose()?.as_deref() != Some(identity_bytes.as_slice()) {
-        return Err(latch_validation(
-            state,
-            known_validation(Error::other("native identity changed after repair"), "native_identity_validation"),
-        ));
-    }
-    fence.ensure_held()?;
-    arm.disarm();
-    info!(
-        event = EVENT_DECOMMISSION_STATE,
-        component = LOG_COMPONENT_ECSTORE,
-        subsystem = LOG_SUBSYSTEM_POOLS,
-        state = "pool_metadata_native_repaired",
-        generation = selection.revision.generation,
-        pools = inspected.len(),
-        disks = inspected.iter().map(|pool| pool.disks.len()).sum::<usize>(),
-        elapsed_ms = repair_started.elapsed().as_secs_f64() * 1000.0,
-        "Pool metadata native replicas repaired"
-    );
-    Ok(true)
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use codec::{fixture_inline_pool_meta_replicas as replicas, fixture_split_inline_pool_meta_replicas as split};
-
-    struct Fixture {
-        pools: Vec<InspectedPool>,
-        commit: Vec<u8>,
-        pending: Vec<u8>,
-        identity: Vec<u8>,
-        revision: PoolMetaRevision,
-        modified: OffsetDateTime,
-    }
-
-    async fn fixture() -> Fixture {
-        let cluster_id = uuid::Uuid::new_v4();
-        let revision = PoolMetaRevision {
-            version: POOL_META_GENERATION_VERSION,
-            cluster_id: Some(cluster_id),
-            epoch: 1,
-            generation: 1,
-            transaction_id: Some(uuid::Uuid::new_v4()),
-        };
-        let meta = PoolMeta {
-            version: POOL_META_GENERATION_VERSION,
-            ..Default::default()
-        };
-        let previous_meta = PoolMeta {
-            version: POOL_META_V1_VERSION,
-            ..Default::default()
-        };
-        let previous = PoolMetaCommittedCandidate {
-            canonical: previous_meta.encode_config_data_for_v2_gate(true).unwrap(),
-            meta: previous_meta,
-            revision: PoolMetaRevision::legacy(POOL_META_V1_VERSION),
-        };
-        let pending = encode_pool_meta_v3_envelope(&meta, revision, false, Some(&previous)).unwrap();
-        let commit = encode_pool_meta_v3_envelope(&meta, revision, true, None).unwrap();
-        let identity = encode_pool_meta_identity(PersistedPoolMetaIdentity {
-            version: POOL_META_IDENTITY_VERSION,
-            cluster_id,
-            epoch: 1,
-            initialized: true,
-            fresh_bootstrap_nonce: None,
-        })
-        .unwrap();
-        let modified = OffsetDateTime::from_unix_timestamp(1_700_000_000).unwrap();
-        let current_split = split(&pending, &commit, modified).await;
-        let current_commit = replicas(&commit, modified + Duration::seconds(1)).await;
-        let backups = replicas(&pending, modified).await;
-        let identities = replicas(&identity, modified).await;
-        let directory = uuid::Uuid::new_v4();
-        let pools = [current_split.clone(), current_split, current_commit.clone(), current_commit]
-            .into_iter()
-            .map(|current| InspectedPool {
-                disks: Vec::new(),
-                snapshots: current
-                    .into_iter()
-                    .enumerate()
-                    .map(|(index, current)| PoolMetaNativeInspection {
-                        disk_id: uuid::Uuid::new_v4(),
-                        identity: Some(identities[index].clone()),
-                        current: Some(current),
-                        backups: vec![crate::disk::PoolMetaNativeBackup {
-                            directory,
-                            data: backups[index].clone(),
-                        }],
-                    })
-                    .collect(),
-            })
-            .collect();
-        Fixture {
-            pools,
-            commit,
-            pending,
-            identity,
-            revision,
-            modified,
-        }
-    }
-
-    #[tokio::test]
-    async fn pool_meta_native_plan_restores_physical_split_with_fresh_common_identity() {
-        let f = fixture().await;
-        let repaired = plan(&f.pools, &f.commit, f.revision, &f.identity).await.unwrap();
-        assert_eq!(repaired.len(), 4);
-        for pool in repaired {
-            assert_eq!(
-                codec::decode_inline_pool_meta_replicas(&pool).await.unwrap(),
-                vec![Bytes::copy_from_slice(&f.commit)]
-            );
-            let times = pool
-                .iter()
-                .map(|raw| codec::parse_inline_info(raw).unwrap().mod_time.unwrap())
-                .collect::<HashSet<_>>();
-            assert_eq!(times.len(), 1);
-            assert!(*times.iter().next().unwrap() > f.modified + Duration::seconds(1));
-        }
-    }
-
-    #[tokio::test]
-    async fn pool_meta_native_plan_rejects_single_hidden_identity_fork() {
-        let mut f = fixture().await;
-        let wrong = replicas(b"different identity", f.modified).await;
-        f.pools[0].snapshots[0].identity = Some(wrong[0].clone());
-        assert!(plan(&f.pools, &f.commit, f.revision, &f.identity).await.is_err());
-    }
-
-    #[tokio::test]
-    async fn pool_meta_native_plan_rejects_hidden_higher_generation_and_unknown_backup() {
-        let mut f = fixture().await;
-        let higher_revision = PoolMetaRevision {
-            generation: 2,
-            transaction_id: Some(uuid::Uuid::new_v4()),
-            ..f.revision
-        };
-        let higher = encode_pool_meta_v3_envelope(
-            &PoolMeta {
-                version: POOL_META_GENERATION_VERSION,
-                ..Default::default()
-            },
-            higher_revision,
-            true,
-            None,
-        )
-        .unwrap();
-        let wrong = replicas(&higher, f.modified + Duration::seconds(2)).await;
-        f.pools[0].snapshots[0].current = Some(wrong[0].clone());
-        assert!(plan(&f.pools, &f.commit, f.revision, &f.identity).await.is_err());
-        f.pools[0].snapshots[0].current = Some(replicas(&f.pending, f.modified).await[0].clone());
-        f.pools[0].snapshots[0].backups[0].data = wrong[0].clone();
-        assert!(plan(&f.pools, &f.commit, f.revision, &f.identity).await.is_err());
-    }
-
-    #[tokio::test]
-    async fn pool_meta_native_plan_accepts_retained_older_recovery_backups() {
-        let mut f = fixture().await;
-        let older_commit = f.commit.clone();
-        let older_pending = f.pending.clone();
-        let next = PoolMetaRevision {
-            generation: 2,
-            transaction_id: Some(uuid::Uuid::new_v4()),
-            ..f.revision
-        };
-        let PoolMetaReplica::Valid { meta, .. } = decode_pool_meta_replica(older_commit.clone()) else {
-            panic!("valid fixture")
-        };
-        let previous = PoolMetaCommittedCandidate {
-            canonical: older_commit.clone(),
-            meta: meta.clone(),
-            revision: f.revision,
-        };
-        f.commit = encode_pool_meta_v3_envelope(&meta, next, true, None).unwrap();
-        f.pending = encode_pool_meta_v3_envelope(&meta, next, false, Some(&previous)).unwrap();
-        f.revision = next;
-        let current = split(&f.pending, &f.commit, f.modified + Duration::seconds(2)).await;
-        let old_commit = replicas(&older_commit, f.modified + Duration::seconds(1)).await;
-        let current_pending = replicas(&f.pending, f.modified + Duration::seconds(2)).await;
-        let new_directory = uuid::Uuid::new_v4();
-        let old_directory = uuid::Uuid::new_v4();
-        for pool in &mut f.pools {
-            for (index, snapshot) in pool.snapshots.iter_mut().enumerate() {
-                snapshot.current = Some(current[index].clone());
-                snapshot.backups.push(crate::disk::PoolMetaNativeBackup {
-                    directory: new_directory,
-                    data: current_pending[index].clone(),
-                });
-                snapshot.backups.push(crate::disk::PoolMetaNativeBackup {
-                    directory: old_directory,
-                    data: old_commit[index].clone(),
-                });
-            }
-        }
-        assert!(older_pending != f.pending);
-        assert!(plan(&f.pools, &f.commit, f.revision, &f.identity).await.is_ok());
-    }
-
-    #[tokio::test]
-    async fn pool_meta_native_plan_rejects_missing_or_corrupt_evidence() {
-        let mut f = fixture().await;
-        let before = f.pools[1].snapshots[2].current.take();
-        assert!(plan(&f.pools, &f.commit, f.revision, &f.identity).await.is_err());
-        f.pools[1].snapshots[2].current = before;
-        f.pools[1].snapshots[2].backups[0].data = Bytes::from_static(b"invalid metadata");
-        assert!(plan(&f.pools, &f.commit, f.revision, &f.identity).await.is_err());
-    }
-}
-
-#[cfg(all(test, feature = "test-util"))]
-#[path = "pool_meta_native_integration_tests.rs"]
-mod integration_tests;
@@ -1,569 +0,0 @@
-// Copyright 2026 RustFS Team
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! Integrity-only codec for conditional recovery of an inline `pool.bin` head.
-//! Reconstructing a payload here never grants authority to publish it.
-
-use crate::disk::RUSTFS_META_BUCKET;
-use crate::erasure::coding::encode::IntegrityEncodeMode;
-use crate::erasure::coding::{BitrotReader, BitrotWriterWrapper, Erasure, calc_shard_size};
-use crate::io_support::shard_integrity::{PartProofReader, ShardVerifier};
-use bytes::Bytes;
-use rustfs_filemeta::{
-    BLOCK_SIZE_V2, ChecksumAlgo, ChecksumInfo, ERASURE_ALGORITHM, FileInfo, FileInfoOpts, FileMeta, get_file_info,
-};
-use rustfs_utils::HashAlgorithm;
-use rustfs_utils::http::{SUFFIX_ACTUAL_SIZE, SUFFIX_INLINE_DATA, get_consistent_str, insert_str, remove_str};
-use std::io::{self, Cursor};
-use std::sync::Arc;
-use time::OffsetDateTime;
-use uuid::Uuid;
-
-const OBJECT: &str = "pool.bin";
-const MAX_SHARDS: usize = 16;
-
-#[derive(Debug, thiserror::Error)]
-pub(super) enum PoolMetaCodecError {
-    #[error("unsupported inline pool metadata layout")]
-    UnsupportedLayout,
-    #[error("pool metadata shard does not match its physical disk")]
-    ShardPlacement,
-    #[error("pool metadata replicas disagree on persistent attributes")]
-    InconsistentMetadata,
-    #[error("pool metadata payload does not match its metadata or shards")]
-    PayloadMismatch,
-    #[error("invalid inline pool metadata")]
-    Metadata(#[source] rustfs_filemeta::Error),
-    #[error("inline pool metadata integrity verification failed")]
-    Integrity(#[source] io::Error),
-}
-
-impl From<rustfs_filemeta::Error> for PoolMetaCodecError {
-    fn from(value: rustfs_filemeta::Error) -> Self {
-        Self::Metadata(value)
-    }
-}
-
-impl From<io::Error> for PoolMetaCodecError {
-    fn from(value: io::Error) -> Self {
-        Self::Integrity(value)
-    }
-}
-
-type Result<T> = std::result::Result<T, PoolMetaCodecError>;
-
-/// Rejects layouts outside the narrow, current inline pool metadata writer.
-pub(super) fn parse_inline_info(raw: &Bytes) -> Result<FileInfo> {
-    if FileMeta::read_format_versions(raw)? != (1, 3, 3, 3) {
-        return Err(PoolMetaCodecError::UnsupportedLayout);
-    }
-    let meta = FileMeta::load(raw)?;
-    if meta.versions.len() != 1 {
-        return Err(PoolMetaCodecError::UnsupportedLayout);
-    }
-    if meta.versions[0]
-        .parse_version_meta()?
-        .object
-        .is_none_or(|object| object.bitrot_checksum_algo != ChecksumAlgo::HighwayHash)
-    {
-        return Err(PoolMetaCodecError::UnsupportedLayout);
-    }
-    let info = get_file_info(
-        raw,
-        RUSTFS_META_BUCKET,
-        OBJECT,
-        "",
-        FileInfoOpts {
-            data: true,
-            include_free_versions: true,
-            include_part_checksums: true,
-        },
-    )?;
-    let size = usize::try_from(info.size).map_err(|_| PoolMetaCodecError::UnsupportedLayout)?;
-    let erasure = &info.erasure;
-    let shards = erasure.data_blocks.checked_add(erasure.parity_blocks);
-    if !info.is_valid()
-        || info.deleted
-        || info.mark_deleted
-        || info.version_id.is_some_and(|id| !id.is_nil())
-        || info.versioned
-        || info.uses_legacy_checksum
-        || info.data_dir.is_none_or(|id| id.is_nil())
-        || info.mod_time.is_none_or(|modified| modified <= OffsetDateTime::UNIX_EPOCH)
-        || info.checksum.is_some()
-        || erasure.algorithm != ERASURE_ALGORITHM
-        || erasure.block_size != BLOCK_SIZE_V2
-        || erasure.data_blocks == 0
-        || erasure.data_blocks != erasure.parity_blocks
-        || shards.is_none_or(|count| !(2..=MAX_SHARDS).contains(&count))
-        || size == 0
-        || size > BLOCK_SIZE_V2
-        || info.parts.len() != 1
-        || info.data.is_none()
-        || get_consistent_str(&info.metadata, SUFFIX_INLINE_DATA) != Some("true")
-    {
-        return Err(PoolMetaCodecError::UnsupportedLayout);
-    }
-    let part = &info.parts[0];
-    let etag = info.metadata.get("etag").ok_or(PoolMetaCodecError::UnsupportedLayout)?;
-    if part.number != 1
-        || part.size != size
-        || part.actual_size != info.size
-        || part.etag != *etag
-        || part.index.is_some()
-        || part.checksums.is_some()
-        || part.error.is_some()
-        || etag.len() != 32
-        || !etag
-            .bytes()
-            .all(|byte| byte.is_ascii_digit() || (b'a'..=b'f').contains(&byte))
-        || get_consistent_str(&info.metadata, SUFFIX_ACTUAL_SIZE).and_then(|actual| actual.parse::<usize>().ok()) != Some(size)
-        || !erasure.checksums.is_empty()
-    {
-        return Err(PoolMetaCodecError::UnsupportedLayout);
-    }
-    Ok(info)
-}
-
-fn validate_placement(info: &FileInfo, physical_index: usize, disk_count: usize) -> Result<()> {
-    if info.erasure.distribution.len() != disk_count
-        || info.erasure.data_blocks + info.erasure.parity_blocks != disk_count
-        || info.erasure.distribution.get(physical_index).copied() != Some(info.erasure.index)
-    {
-        return Err(PoolMetaCodecError::ShardPlacement);
-    }
-    Ok(())
-}
-
-fn erasure(info: &FileInfo) -> Result<Erasure> {
-    Erasure::try_new(info.erasure.data_blocks, info.erasure.parity_blocks, info.erasure.block_size)
-        .map_err(|_| PoolMetaCodecError::UnsupportedLayout)
-}
-
-fn md5(payload: &[u8]) -> String {
-    hex_simd::encode_to_string(HashAlgorithm::Md5.hash_encode(payload).as_ref(), hex_simd::AsciiCase::Lower)
-}
-
-async fn verified_shard(info: &FileInfo) -> Result<Vec<u8>> {
-    let size = usize::try_from(info.size).map_err(|_| PoolMetaCodecError::UnsupportedLayout)?;
-    let shard_size = calc_shard_size(size, info.erasure.data_blocks);
-    let data = info.data.as_ref().ok_or(PoolMetaCodecError::UnsupportedLayout)?;
-    if data.len() != shard_size + HashAlgorithm::HighwayHash256S.size() {
-        return Err(PoolMetaCodecError::PayloadMismatch);
-    }
-    let mut reader = BitrotReader::new(Cursor::new(data.clone()), shard_size, HashAlgorithm::HighwayHash256S, false);
-    if let Some(integrity) = &info.parts[0].integrity {
-        let proof = PartProofReader::new(integrity.clone(), std::slice::from_ref(info), &[None], RUSTFS_META_BUCKET, OBJECT)?;
-        reader.set_integrity(ShardVerifier::new(proof, info.erasure.index - 1, 0, None)?)?;
-    }
-    let mut shard = vec![0; shard_size];
-    if reader.read(&mut shard).await? != shard_size {
-        return Err(PoolMetaCodecError::PayloadMismatch);
-    }
-    Ok(shard)
-}
-
-fn generation_key(info: &FileInfo) -> FileInfo {
-    let mut key = info.clone();
-    key.erasure.index = 0;
-    key.data = None;
-    key
-}
-
-/// Decodes every reconstructable generation without making a quorum decision.
-///
-/// All physical disks must be present and every supplied shard must verify.
-/// Groups below the erasure reconstruction threshold are left undecoded; the
-/// caller must match every such shard against an independently known payload
-/// with [`validate_inline_pool_meta_shard`] before proposing any mutation.
-pub(super) async fn decode_inline_pool_meta_replicas(raw: &[Bytes]) -> Result<Vec<Bytes>> {
-    if !(2..=MAX_SHARDS).contains(&raw.len()) {
-        return Err(PoolMetaCodecError::UnsupportedLayout);
-    }
-    struct Group {
-        key: FileInfo,
-        present: usize,
-        shards: Vec<Option<Vec<u8>>>,
-    }
-    let mut groups: Vec<Group> = Vec::new();
-    for (physical_index, bytes) in raw.iter().enumerate() {
-        let info = parse_inline_info(bytes)?;
-        validate_placement(&info, physical_index, raw.len())?;
-        let shard = verified_shard(&info).await?;
-        let key = generation_key(&info);
-        let group_index = if let Some(index) = groups.iter().position(|group| group.key == key) {
-            index
-        } else {
-            groups.push(Group {
-                key,
-                present: 0,
-                shards: vec![None; raw.len()],
-            });
-            groups.len() - 1
-        };
-        let group = &mut groups[group_index];
-        let slot = &mut group.shards[info.erasure.index - 1];
-        if slot.is_some() {
-            return Err(PoolMetaCodecError::ShardPlacement);
-        }
-        *slot = Some(shard);
-        group.present += 1;
-    }
-    let mut decoded = Vec::with_capacity(groups.len());
-    for mut group in groups {
-        if group.present < group.key.erasure.data_blocks {
-            continue;
-        }
-        let codec = erasure(&group.key)?;
-        codec.decode_data(&mut group.shards)?;
-        let size = usize::try_from(group.key.size).map_err(|_| PoolMetaCodecError::UnsupportedLayout)?;
-        let mut payload = Vec::with_capacity(size);
-        for shard in group.shards.iter().take(group.key.erasure.data_blocks) {
-            let shard = shard.as_ref().ok_or(PoolMetaCodecError::PayloadMismatch)?;
-            let remaining = size.saturating_sub(payload.len());
-            payload.extend_from_slice(&shard[..remaining.min(shard.len())]);
-        }
-        if payload.len() != size || group.key.metadata.get("etag") != Some(&md5(&payload)) {
-            return Err(PoolMetaCodecError::PayloadMismatch);
-        }
-        let encoded = codec.encode_data(&payload)?;
-        if group
-            .shards
-            .iter()
-            .zip(&encoded)
-            .any(|(actual, expected)| actual.as_ref().is_some_and(|actual| actual.as_slice() != expected.as_ref()))
-        {
-            return Err(PoolMetaCodecError::PayloadMismatch);
-        }
-        decoded.push(Bytes::from(payload));
-    }
-    Ok(decoded)
-}
-
-/// Verifies a minority shard against a payload whose authority was established elsewhere.
-pub(super) async fn validate_inline_pool_meta_shard(raw: &Bytes, physical_index: usize, payload: &[u8]) -> Result<()> {
-    let info = parse_inline_info(raw)?;
-    validate_placement(&info, physical_index, info.erasure.distribution.len())?;
-    if usize::try_from(info.size).ok() != Some(payload.len()) || info.metadata.get("etag") != Some(&md5(payload)) {
-        return Err(PoolMetaCodecError::PayloadMismatch);
-    }
-    let actual = verified_shard(&info).await?;
-    let encoded = erasure(&info)?.encode_data(payload)?;
-    if encoded
-        .get(info.erasure.index - 1)
-        .is_none_or(|expected| expected.as_ref() != actual.as_slice())
-    {
-        return Err(PoolMetaCodecError::PayloadMismatch);
-    }
-    Ok(())
-}
-
-fn persistent_attributes(info: &FileInfo) -> FileInfo {
-    let mut attributes = generation_key(info);
-    attributes.data_dir = None;
-    attributes.mod_time = None;
-    attributes.size = 0;
-    attributes.parts.clear();
-    attributes.erasure.checksums.clear();
-    attributes.metadata.remove("etag");
-    remove_str(&mut attributes.metadata, SUFFIX_ACTUAL_SIZE);
-    rustfs_filemeta::shard_integrity::clear_integrity_metadata(&mut attributes.metadata);
-    attributes
-}
-
-/// Builds disk-specific inline heads while retaining each disk's existing FileMeta.
-/// The caller supplies the independently authorized canonical COMMIT payload.
-pub(super) async fn encode_inline_pool_meta_replicas(
-    raw: &[Bytes],
-    canonical: &[u8],
-    modified: OffsetDateTime,
-) -> Result<Vec<Bytes>> {
-    if !(2..=MAX_SHARDS).contains(&raw.len()) || canonical.is_empty() || canonical.len() > BLOCK_SIZE_V2 {
-        return Err(PoolMetaCodecError::UnsupportedLayout);
-    }
-    let mut infos = Vec::with_capacity(raw.len());
-    for (physical_index, bytes) in raw.iter().enumerate() {
-        let info = parse_inline_info(bytes)?;
-        validate_placement(&info, physical_index, raw.len())?;
-        verified_shard(&info).await?;
-        if info.mod_time.is_none_or(|previous| modified <= previous) {
-            return Err(PoolMetaCodecError::UnsupportedLayout);
-        }
-        if let Some(first) = infos.first()
-            && persistent_attributes(first) != persistent_attributes(&info)
-        {
-            return Err(PoolMetaCodecError::InconsistentMetadata);
-        }
-        infos.push(info);
-    }
-    let mut base = infos.first().ok_or(PoolMetaCodecError::UnsupportedLayout)?.clone();
-    let protected = infos.iter().any(|info| info.parts[0].integrity.is_some());
-    let codec = Arc::new(erasure(&base)?);
-    let mut writers: Vec<Option<BitrotWriterWrapper>> = std::iter::repeat_with(|| None).take(raw.len()).collect();
-    let (_, written, shards, integrity) = Arc::clone(&codec)
-        .encode_with_shard_integrity(
-            Cursor::new(Bytes::copy_from_slice(canonical)),
-            &mut writers,
-            raw.len(),
-            1,
-            IntegrityEncodeMode::Inline(canonical.len()),
-            protected,
-        )
-        .await?;
-    if written != canonical.len() {
-        return Err(PoolMetaCodecError::PayloadMismatch);
-    }
-    let shards = shards.ok_or(PoolMetaCodecError::PayloadMismatch)?;
-    let etag = md5(canonical);
-    base.data_dir = Some(Uuid::new_v4());
-    base.mod_time = Some(modified);
-    base.size = i64::try_from(canonical.len()).map_err(|_| PoolMetaCodecError::UnsupportedLayout)?;
-    base.metadata.insert("etag".to_owned(), etag.clone());
-    insert_str(&mut base.metadata, SUFFIX_ACTUAL_SIZE, canonical.len().to_string());
-    base.parts.clear();
-    base.add_object_part(1, etag, canonical.len(), Some(modified), base.size, None, None);
-    rustfs_filemeta::shard_integrity::clear_integrity_metadata(&mut base.metadata);
-    if let Some(integrity) = integrity {
-        integrity.set_inline_metadata(&mut base)?;
-        base.parts[0].integrity = Some(integrity.part);
-    }
-    base.persist_shard_integrity()?;
-    base.erasure.checksums = vec![ChecksumInfo {
-        part_number: 1,
-        algorithm: HashAlgorithm::HighwayHash256S,
-        hash: Bytes::new(),
-    }];
-    base.set_inline_data();
-    let mut replacement = Vec::with_capacity(raw.len());
-    for (bytes, original) in raw.iter().zip(infos) {
-        let mut info = base.clone();
-        info.erasure.index = original.erasure.index;
-        info.data = Some(
-            shards
-                .get(info.erasure.index - 1)
-                .ok_or(PoolMetaCodecError::ShardPlacement)?
-                .clone(),
-        );
-        let mut meta = FileMeta::load(bytes)?;
-        meta.add_version(info)?;
-        replacement.push(Bytes::from(meta.marshal_msg()?));
-    }
-    Ok(replacement)
-}
-
-#[cfg(test)]
-pub(super) async fn fixture_inline_pool_meta_replicas(payload: &[u8], modified: OffsetDateTime) -> Vec<Bytes> {
-    use crate::erasure::coding::{BitrotWriterWrapper, CustomWriter};
-    let mut base = FileInfo::new(".rustfs.sys/pool.bin", 2, 2);
-    base.volume = RUSTFS_META_BUCKET.to_owned();
-    base.name = OBJECT.to_owned();
-    base.data_dir = Some(Uuid::new_v4());
-    base.mod_time = Some(modified);
-    base.size = i64::try_from(payload.len()).expect("test payload should fit i64");
-    let etag = md5(payload);
-    base.metadata.insert("etag".to_owned(), etag.clone());
-    base.metadata
-        .insert("content-type".to_owned(), "application/octet-stream".to_owned());
-    insert_str(&mut base.metadata, SUFFIX_ACTUAL_SIZE, payload.len().to_string());
-    base.set_inline_data();
-    base.add_object_part(1, etag, payload.len(), Some(modified), base.size, None, None);
-    let codec = erasure(&base).expect("fixture layout should construct");
-    let shards = codec.encode_data(payload).expect("fixture erasure encoding should succeed");
-    let mut raw = Vec::with_capacity(4);
-    for coding_index in &base.erasure.distribution {
-        let mut writer =
-            BitrotWriterWrapper::new(CustomWriter::new_inline_buffer(), codec.shard_size(), HashAlgorithm::HighwayHash256S);
-        writer
-            .write(&shards[*coding_index - 1])
-            .await
-            .expect("fixture bitrot writer should write");
-        writer.shutdown().await.expect("fixture bitrot writer should finish");
-        let mut info = base.clone();
-        info.erasure.index = *coding_index;
-        info.data = Some(Bytes::from(writer.into_inline_data().expect("fixture writer should retain inline bytes")));
-        let mut meta = FileMeta::new();
-        meta.add_version(info).expect("test inline FileInfo should serialize");
-        raw.push(Bytes::from(meta.marshal_msg().expect("test xl.meta should serialize")));
-    }
-    raw
-}
-
-#[cfg(test)]
-pub(super) async fn fixture_split_inline_pool_meta_replicas(
-    prepare: &[u8],
-    commit: &[u8],
-    modified: OffsetDateTime,
-) -> Vec<Bytes> {
-    let mut raw = fixture_inline_pool_meta_replicas(prepare, modified).await;
-    let committed = fixture_inline_pool_meta_replicas(commit, modified + time::Duration::seconds(1)).await;
-    raw[2..].clone_from_slice(&committed[2..]);
-    raw
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use fixture_inline_pool_meta_replicas as fixtures;
-
-    fn time(seconds: i64) -> OffsetDateTime {
-        OffsetDateTime::from_unix_timestamp(seconds).expect("test timestamp should be valid")
-    }
-
-    fn metadata(info: FileInfo) -> Bytes {
-        let mut meta = FileMeta::new();
-        meta.add_version(info).expect("test inline FileInfo should serialize");
-        Bytes::from(meta.marshal_msg().expect("test xl.meta should serialize"))
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_reconstructs_both_halves_without_treating_them_as_authority() {
-        let raw = fixture_split_inline_pool_meta_replicas(b"prepare with predecessor", b"commit", time(10)).await;
-        let decoded = decode_inline_pool_meta_replicas(&raw)
-            .await
-            .expect("two shards should reconstruct each payload");
-        assert_eq!(decoded.len(), 2);
-        assert_eq!(decoded[0].as_ref(), b"prepare with predecessor");
-        assert_eq!(decoded[1].as_ref(), b"commit");
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_requires_known_payload_for_single_minority_shard() {
-        let previous = fixtures(b"previous", time(10)).await;
-        let commit = fixtures(b"commit", time(11)).await;
-        let raw = vec![previous[0].clone(), commit[1].clone(), commit[2].clone(), commit[3].clone()];
-        let decoded = decode_inline_pool_meta_replicas(&raw)
-            .await
-            .expect("three commit shards should reconstruct");
-        assert_eq!(decoded.len(), 1);
-        assert_eq!(decoded[0].as_ref(), b"commit");
-        validate_inline_pool_meta_shard(&raw[0], 0, b"previous")
-            .await
-            .expect("known predecessor should verify");
-        assert!(matches!(
-            validate_inline_pool_meta_shard(&raw[0], 0, b"commit").await,
-            Err(PoolMetaCodecError::PayloadMismatch)
-        ));
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_rejects_bitrot_even_with_other_reconstructable_shards() {
-        let mut raw = fixtures(b"commit", time(10)).await;
-        let mut info = parse_inline_info(&raw[0]).expect("fixture should parse");
-        let mut data = info.data.take().expect("fixture should be inline").to_vec();
-        data[HashAlgorithm::HighwayHash256S.size()] ^= 1;
-        info.data = Some(Bytes::from(data));
-        raw[0] = metadata(info);
-        assert!(matches!(
-            decode_inline_pool_meta_replicas(&raw).await,
-            Err(PoolMetaCodecError::Integrity(_))
-        ));
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_rejects_trailing_inline_bytes() {
-        let mut raw = fixtures(b"commit", time(10)).await;
-        let mut info = parse_inline_info(&raw[0]).expect("fixture should parse");
-        let mut data = info.data.take().expect("fixture should be inline").to_vec();
-        data.push(0);
-        info.data = Some(Bytes::from(data));
-        raw[0] = metadata(info);
-        assert!(matches!(
-            decode_inline_pool_meta_replicas(&raw).await,
-            Err(PoolMetaCodecError::PayloadMismatch)
-        ));
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_rejects_duplicate_physical_shard_mapping() {
-        let mut raw = fixtures(b"commit", time(10)).await;
-        raw.swap(0, 1);
-        assert!(matches!(
-            decode_inline_pool_meta_replicas(&raw).await,
-            Err(PoolMetaCodecError::ShardPlacement)
-        ));
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_rejects_payload_md5_disagreement_after_valid_bitrot() {
-        let mut raw = fixtures(b"commit", time(10)).await;
-        for bytes in &mut raw {
-            let mut info = parse_inline_info(bytes).expect("fixture should parse");
-            info.metadata
-                .insert("etag".to_owned(), "00000000000000000000000000000000".to_owned());
-            info.parts[0].etag = "00000000000000000000000000000000".to_owned();
-            *bytes = metadata(info);
-        }
-        assert!(matches!(
-            decode_inline_pool_meta_replicas(&raw).await,
-            Err(PoolMetaCodecError::PayloadMismatch)
-        ));
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_reencodes_split_heads_to_one_canonical_generation() {
-        let prepare = fixtures(b"prepare with predecessor", time(10)).await;
-        let commit = fixtures(b"commit", time(11)).await;
-        let raw = vec![prepare[0].clone(), prepare[1].clone(), commit[2].clone(), commit[3].clone()];
-        let repaired = encode_inline_pool_meta_replicas(&raw, b"commit", time(12))
-            .await
-            .expect("split heads should encode");
-        let decoded = decode_inline_pool_meta_replicas(&repaired)
-            .await
-            .expect("repaired set should decode");
-        assert_eq!(decoded.len(), 1);
-        assert_eq!(decoded[0].as_ref(), b"commit");
-        let info = parse_inline_info(&repaired[0]).expect("repaired metadata should parse");
-        assert_eq!(info.mod_time, Some(time(12)));
-        assert_eq!(info.metadata.get("content-type").map(String::as_str), Some("application/octet-stream"));
-        for (index, bytes) in repaired.iter().enumerate() {
-            validate_inline_pool_meta_shard(bytes, index, b"commit")
-                .await
-                .expect("every repaired disk should match commit");
-        }
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_preserves_required_persistent_metadata_agreement() {
-        let mut raw = fixtures(b"commit", time(10)).await;
-        let mut info = parse_inline_info(&raw[0]).expect("fixture should parse");
-        info.metadata.insert("content-type".to_owned(), "text/plain".to_owned());
-        raw[0] = metadata(info);
-        assert!(matches!(
-            encode_inline_pool_meta_replicas(&raw, b"commit", time(11)).await,
-            Err(PoolMetaCodecError::InconsistentMetadata)
-        ));
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_requires_strictly_newer_common_modification_time() {
-        let raw = fixtures(b"commit", time(10)).await;
-        assert!(matches!(
-            encode_inline_pool_meta_replicas(&raw, b"commit", time(10)).await,
-            Err(PoolMetaCodecError::UnsupportedLayout)
-        ));
-    }
-
-    #[tokio::test]
-    async fn pool_meta_codec_rejects_noninline_heads_and_wrong_disk_count() {
-        let mut raw = fixtures(b"commit", time(10)).await;
-        assert!(matches!(
-            decode_inline_pool_meta_replicas(&raw[..3]).await,
-            Err(PoolMetaCodecError::ShardPlacement)
-        ));
-        let mut info = parse_inline_info(&raw[0]).expect("fixture should parse");
-        info.data = None;
-        raw[0] = metadata(info);
-        assert!(matches!(parse_inline_info(&raw[0]), Err(PoolMetaCodecError::UnsupportedLayout)));
-    }
-}
@@ -473,6 +473,7 @@ mod decommission_lock_order_tests {
        let ctx = Arc::new(crate::runtime::instance::InstanceContext::new());
        ctx.update_erasure_type(crate::layout::endpoints::SetupType::DistErasure)
            .await;
+        *ctx.local_disk_map().write().await = other_store.ctx.local_disk_map().read().await.clone();
        let endpoints = other_store
            .ctx
            .endpoints()
@@ -481,43 +482,9 @@ mod decommission_lock_order_tests {
        if let Some(deployment_id) = other_store.ctx.deployment_id() {
            ctx.set_deployment_id(deployment_id);
        }
-        let authority = ctx
-            .bind_multipart_proof_topology(&endpoints)
-            .expect("lease-loss fixture must own its complete native proof topology");
-        let mut local_disk_map = HashMap::new();
        for pool in &mut pools {
-            let pool = Arc::make_mut(pool);
-            pool.set_instance_ctx_for_test(Arc::clone(&ctx));
-            for set in &mut pool.disk_set {
-                let set = Arc::make_mut(set);
-                let source_disks = set.disks.read().await.clone();
-                let mut disks = Vec::with_capacity(set.set_endpoints.len());
-                for (slot, endpoint) in set.set_endpoints.iter().enumerate() {
-                    // The logical node clone shares durable contents, never a
-                    // native handle already owned by another instance scope.
-                    let disk = crate::disk::new_disk(
-                        endpoint,
-                        &crate::disk::DiskOption {
-                            cleanup: false,
-                            health_check: false,
-                        },
-                    )
-                    .await
-                    .expect("open the lease-loss node's independently owned native handle");
-                    assert!(!Arc::ptr_eq(&disk, source_disks[slot].as_ref().expect("source fixture disk")));
-                    assert_eq!(
-                        crate::disk::DiskAPI::get_disk_id(disk.as_ref()).await.unwrap(),
-                        Some(pool.format.erasure.sets[set.set_index][slot])
-                    );
-                    local_disk_map.insert(endpoint.to_string(), Some(disk.clone()));
-                    disks.push(Some(disk));
-                }
-                crate::disk::multipart_source::bind_multipart_proof_snapshot(&disks, &authority)
-                    .expect("lease-loss native handles must bind only to this fixture instance");
-                set.disks = Arc::new(tokio::sync::RwLock::new(disks));
-            }
+            Arc::make_mut(pool).set_instance_ctx_for_test(Arc::clone(&ctx));
        }
-        *ctx.local_disk_map().write().await = local_disk_map;
        let store = Arc::new(crate::store::ECStore {
            id: uuid::Uuid::new_v4(),
            disk_map: other_store.disk_map.clone(),
@@ -532,6 +499,7 @@ mod decommission_lock_order_tests {
            ),
            ctx,
            bucket_fence_registry: Arc::default(),
+            ordinary_classification: Default::default(),
        });
        crate::bucket::metadata_sys::init_bucket_metadata_sys(Arc::clone(&store), Vec::new()).await;
        (store, refresh_calls)
@@ -6919,6 +6887,7 @@ mod decommission_lock_order_tests {
        };
        owner.apply_to(&mut abort_opts);
        let barrier = MultipartCommitBarrier::install(&bucket, object, MultipartCommitPause::AbortAfterDelete);
+        tokio::time::pause();
        let abort = tokio::spawn({
            let abort_store = Arc::clone(&lossy_store);
            let abort_bucket = bucket.clone();
@@ -6938,9 +6907,6 @@ mod decommission_lock_order_tests {
            }
        });
        barrier.wait_until_paused().await;
-        // Native cleanup performs real filesystem I/O. Pause time only after
-        // durable deletion, when the abort is blocked before its release save.
-        tokio::time::pause();
        tokio::task::yield_now().await;
        refresh_calls.arm();
        tokio::time::advance(Duration::from_secs(11)).await;
@@ -19,6 +19,7 @@ use crate::layout::set_heal::{formats_to_drives_info, new_heal_format_sets};
 use crate::multipart_listing::paginate_multipart_listing;
 use crate::storage_api_contracts::{
    bucket::{BucketInfo, BucketOperations, BucketOptions, DeleteBucketOptions, MakeBucketOptions},
+    list::{StorageListObjectVersionsInfo, StorageListObjectsV2Info, StorageObjectInfoOrErr, StorageWalkOptions},
    multipart::{CompletePart, ListMultipartsInfo, ListPartsInfo, MultipartInfo, MultipartUploadResult, PartInfo},
    object::{DeleteAccounting, DeletedObject, ObjectIO as _, ObjectOperations as _, ObjectToDelete},
    range::HTTPRangeSpec,
@@ -59,10 +60,16 @@ use std::{
 use tokio::sync::RwLock;
 use tokio::sync::broadcast::{Receiver, Sender};
 use tokio::time::Duration;
+use tokio_util::sync::CancellationToken;
 use tracing::warn;
 use tracing::{error, info};
 use uuid::Uuid;

+type ListObjectsV2Info = StorageListObjectsV2Info<ObjectInfo>;
+type ListObjectVersionsInfo = StorageListObjectVersionsInfo<ObjectInfo>;
+type ObjectInfoOrErr = StorageObjectInfoOrErr<ObjectInfo, Error>;
+type WalkOptions = StorageWalkOptions<fn(&FileInfo) -> bool>;
+
 const LIST_MULTIPART_SETS_CONCURRENCY: usize = 4;

 fn is_idempotent_delete_prefix_error(err: &Error) -> bool {
@@ -92,6 +99,33 @@ pub struct Sets {
    ctx: Arc<InstanceContext>,
 }

+#[cfg(test)]
+impl Sets {
+    pub(crate) fn from_test_set(
+        set: Arc<SetDisks>,
+        endpoints: PoolEndpoints,
+        format: FormatV3,
+        pool_idx: usize,
+        parity_count: usize,
+        ctx: Arc<InstanceContext>,
+    ) -> Arc<Self> {
+        Arc::new(Self {
+            id: format.id,
+            disk_set: vec![set],
+            pool_idx,
+            set_count: 1,
+            set_drive_count: endpoints.drives_per_set,
+            endpoints,
+            format,
+            parity_count,
+            default_parity_count: parity_count,
+            distribution_algo: DistributionAlgoVersion::V1,
+            exit_signal: None,
+            ctx,
+        })
+    }
+}
+
 impl Drop for Sets {
    fn drop(&mut self) {
        if let Some(exit_signal) = self.exit_signal.take() {
@@ -317,17 +351,6 @@ impl Sets {
        &self.ctx
    }

-    #[cfg(test)]
-    pub(crate) async fn stop_endpoint_monitor_for_test(&self) {
-        if let Some(exit_signal) = &self.exit_signal {
-            let _ = exit_signal.send(());
-            // Wait for an in-flight reconnect pass as well as its receiver to exit.
-            while exit_signal.receiver_count() != 0 {
-                tokio::task::yield_now().await;
-            }
-        }
-    }
-
    /// Keep simulated peers' metadata ownership separate while sharing disks and lock clients.
    #[cfg(test)]
    pub(crate) fn set_instance_ctx_for_test(&mut self, ctx: Arc<InstanceContext>) {
@@ -804,6 +827,10 @@ impl crate::storage_api_contracts::object::ObjectOperations for Sets {
            mod_time: dst_opts.mod_time,
            http_preconditions: dst_opts.http_preconditions.clone(),
            quota_admission: dst_opts.quota_admission,
+            expected_bucket_incarnation_id: dst_opts.expected_bucket_incarnation_id,
+            bucket_lifecycle_lock_fence: dst_opts.bucket_lifecycle_lock_fence.clone(),
+            bucket_incarnation_fence: dst_opts.bucket_incarnation_fence.clone(),
+            object_lock_config_snapshot: dst_opts.object_lock_config_snapshot.clone(),
            ..Default::default()
        };

@@ -886,6 +913,67 @@ impl crate::storage_api_contracts::object::ObjectOperations for Sets {
    }
 }

+#[async_trait::async_trait]
+impl crate::storage_api_contracts::list::ListOperations for Sets {
+    type Error = Error;
+    type ListObjectsV2Info = ListObjectsV2Info;
+    type ListObjectVersionsInfo = ListObjectVersionsInfo;
+    type ObjectInfoOrErr = ObjectInfoOrErr;
+    type WalkOptions = WalkOptions;
+    type WalkCancellation = CancellationToken;
+    type WalkResultSender = tokio::sync::mpsc::Sender<ObjectInfoOrErr>;
+
+    #[tracing::instrument(level = "trace", skip(self))]
+    async fn list_objects_v2(
+        self: Arc<Self>,
+        bucket: &str,
+        prefix: &str,
+        continuation_token: Option<String>,
+        delimiter: Option<String>,
+        max_keys: i32,
+        fetch_owner: bool,
+        start_after: Option<String>,
+        incl_deleted: bool,
+    ) -> Result<ListObjectsV2Info> {
+        self.inner_list_objects_v2(
+            bucket,
+            prefix,
+            continuation_token,
+            delimiter,
+            max_keys,
+            fetch_owner,
+            start_after,
+            incl_deleted,
+        )
+        .await
+    }
+
+    #[tracing::instrument(skip(self))]
+    async fn list_object_versions(
+        self: Arc<Self>,
+        bucket: &str,
+        prefix: &str,
+        marker: Option<String>,
+        version_marker: Option<String>,
+        delimiter: Option<String>,
+        max_keys: i32,
+    ) -> Result<ListObjectVersionsInfo> {
+        self.inner_list_object_versions(bucket, prefix, marker, version_marker, delimiter, max_keys)
+            .await
+    }
+
+    async fn walk(
+        self: Arc<Self>,
+        rx: CancellationToken,
+        bucket: &str,
+        prefix: &str,
+        result: tokio::sync::mpsc::Sender<ObjectInfoOrErr>,
+        opts: WalkOptions,
+    ) -> Result<()> {
+        self.walk_internal(rx, bucket, prefix, result, opts).await
+    }
+}
+
 #[async_trait::async_trait]
 impl crate::storage_api_contracts::multipart::MultipartOperations for Sets {
    type Error = Error;
@@ -1458,7 +1546,9 @@ mod tests {
    use crate::layout::endpoint::Endpoint;
    use crate::layout::endpoints::SetupType;
    use crate::storage_api_contracts::heal::HealOperations as _;
+    use crate::storage_api_contracts::list::ListOperations as _;
    use crate::storage_api_contracts::multipart::MultipartOperations as _;
+    use rustfs_lock::client::local::LocalClient;
    use serial_test::serial;

    struct SetupTypeGuard {
@@ -2038,6 +2128,100 @@ mod tests {
        assert_eq!(second.common_prefixes, expected_prefixes[1..]);
    }

+    #[tokio::test(flavor = "multi_thread")]
+    #[serial]
+    async fn sets_list_objects_v2_lists_objects_within_the_pool() {
+        let _setup_type_guard = SetupTypeGuard::switch_to(SetupType::Erasure).await;
+        let format = FormatV3::new(1, 2);
+        let mut endpoints = Vec::new();
+        let mut disks = Vec::new();
+
+        for disk_idx in 0..2 {
+            let dir = tempfile::tempdir().expect("tempdir should be created");
+            let mut endpoint =
+                Endpoint::try_from(dir.path().to_str().expect("tempdir path should be utf8")).expect("endpoint should parse");
+            endpoint.set_pool_index(0);
+            endpoint.set_set_index(0);
+            endpoint.set_disk_index(disk_idx);
+
+            let disk = new_disk(
+                &endpoint,
+                &DiskOption {
+                    cleanup: false,
+                    health_check: false,
+                },
+            )
+            .await
+            .expect("disk should be created");
+
+            let mut disk_format = format.clone();
+            disk_format.erasure.this = format.erasure.sets[0][disk_idx];
+            save_format_file(&Some(disk.clone()), &Some(disk_format))
+                .await
+                .expect("format should be saved");
+
+            std::mem::forget(dir);
+            endpoints.push(endpoint);
+            disks.push(Some(disk));
+        }
+
+        let set_disks = SetDisks::new(
+            "test-owner".to_string(),
+            Arc::new(RwLock::new(disks)),
+            2,
+            1,
+            0,
+            0,
+            endpoints.clone(),
+            format.clone(),
+            vec![Arc::new(LocalClient::new()), Arc::new(LocalClient::new())],
+        )
+        .await;
+
+        let sets = Arc::new(Sets {
+            id: format.id,
+            disk_set: vec![set_disks],
+            pool_idx: 0,
+            endpoints: PoolEndpoints {
+                legacy: false,
+                set_count: 1,
+                drives_per_set: 2,
+                endpoints: Endpoints::from(endpoints),
+                cmd_line: String::new(),
+                platform: String::new(),
+            },
+            format,
+            parity_count: 1,
+            set_count: 1,
+            set_drive_count: 2,
+            default_parity_count: 1,
+            distribution_algo: DistributionAlgoVersion::V1,
+            exit_signal: None,
+            ctx: bootstrap_ctx(),
+        });
+
+        let bucket = format!("bucket-{}", Uuid::new_v4().simple());
+        let object = format!("object-{}", Uuid::new_v4().simple());
+
+        sets.make_bucket(&bucket, &MakeBucketOptions::default())
+            .await
+            .expect("bucket should be created");
+
+        let mut reader = PutObjReader::from_vec(b"hello".to_vec());
+        sets.put_object(&bucket, &object, &mut reader, &ObjectOptions::default())
+            .await
+            .expect("object should be written");
+
+        let result = sets
+            .clone()
+            .list_objects_v2(&bucket, "", None, None, 1000, false, None, false)
+            .await
+            .expect("pool-level listing should succeed");
+
+        assert_eq!(result.objects.len(), 1);
+        assert_eq!(result.objects[0].name, object);
+    }
+
    #[tokio::test]
    async fn sets_check_abandoned_parts_rejects_invalid_set_scope() {
        let format = FormatV3::new(1, 1);
@@ -31,7 +31,7 @@ use crate::storage_api_contracts::{
    namespace::NamespaceLocking as _,
    object::{HTTPPreconditions, ObjectOperations as _},
 };
-use crate::store::{DecommissionFixedReadAnchor, ECStore, SourceCleanupMutationFence};
+use crate::store::{BucketIncarnationFenceGuard, DecommissionFixedReadAnchor, ECStore, SourceCleanupMutationFence};
 use bytes::Bytes;
 use rustfs_filemeta::{FileInfo, FileInfoVersions, ObjectPartInfo};
 use rustfs_rio::{EtagResolvable, HashReader, HashReaderDetector, Index, TryGetIndex};
@@ -958,26 +958,6 @@ fn is_data_movement_rewritten_transition_metadata(object_info: &ObjectInfo, key:
    })
 }

-fn data_movement_publication_marker_valid(object_info: &ObjectInfo) -> bool {
-    use crate::disk::multipart_source::{SourceConditionV1, publication_identity_from_metadata};
-
-    let publication = match publication_identity_from_metadata(&object_info.user_defined) {
-        Ok(Some(publication)) => publication,
-        Ok(None) => return true,
-        Err(_) => return false,
-    };
-    if publication.final_data_dir.is_nil() {
-        return false;
-    }
-    SourceConditionV1 {
-        lineage: publication.lineage,
-        generation: publication.source_generation,
-        attempt: publication.attempt,
-    }
-    .validate()
-    .is_ok()
-}
-
 fn is_data_movement_rewritten_metadata(object_info: &ObjectInfo, key: &str, normalize_compression_size: bool) -> bool {
    [
        SUFFIX_DATA_MOVED,
@@ -992,7 +972,6 @@ fn is_data_movement_rewritten_metadata(object_info: &ObjectInfo, key: &str, norm
    ]
    .iter()
    .any(|suffix| is_data_movement_internal_metadata(key, suffix))
-        || crate::disk::multipart_source::is_publication_metadata_key(key)
        || is_data_movement_rewritten_transition_metadata(object_info, key)
        || key == rustfs_rio::RUSTFS_MULTIPART_CHECKSUM
        || key == rustfs_rio::RUSTFS_MULTIPART_CHECKSUM_TYPE
@@ -1015,14 +994,6 @@ pub(crate) fn is_equivalent_data_movement_metadata(
        return false;
    }

-    // Copy can retain a native publication after changing the current key,
-    // version or placement. Validate that historical record's structure, then
-    // exclude only this per-copy provenance from content equivalence. Actual
-    // current scope/content remain independently compared below; this grants
-    // no native write-quorum proof or Complete replay authority.
-    if !data_movement_publication_marker_valid(source) || !data_movement_publication_marker_valid(target) {
-        return false;
-    }
    let normalize_compression_size = source.is_compressed() && target.is_compressed();
    if normalize_compression_size
        && !is_compatible_data_movement_marker_presence(
@@ -1062,25 +1033,6 @@ pub(crate) fn is_equivalent_data_movement_object_identity(
    target: &ObjectInfo,
    compare_mod_time: bool,
    compare_part_checksums: bool,
-) -> bool {
-    source.bucket == target.bucket
-        && source.name == target.name
-        && is_equivalent_data_movement_object_fields(source, target, compare_mod_time, compare_part_checksums)
-}
-
-// Exact-delete capacity reconciliation reads a target at a fixed physical key.
-// Keep its checked encoded-name contract separate from logical-key equality.
-pub(crate) fn is_equivalent_data_movement_capacity_target(source: &ObjectInfo, target: &ObjectInfo) -> bool {
-    source.bucket == target.bucket
-        && source.name == rustfs_utils::path::decode_dir_object(&target.name)
-        && is_equivalent_data_movement_object_fields(source, target, true, false)
-}
-
-fn is_equivalent_data_movement_object_fields(
-    source: &ObjectInfo,
-    target: &ObjectInfo,
-    compare_mod_time: bool,
-    compare_part_checksums: bool,
 ) -> bool {
    let (Some(source_actual_size), Some(target_actual_size)) = (effective_actual_size(source), effective_actual_size(target))
    else {
@@ -1326,6 +1278,7 @@ pub(crate) enum SourceCleanupError {
 #[derive(Clone, Default)]
 pub(crate) struct SourceCleanupBucketFence<'a> {
    pub(crate) expected_incarnation_id: Option<uuid::Uuid>,
+    pub(crate) lifecycle_owner: Option<&'a Arc<BucketIncarnationFenceGuard>>,
    pub(crate) lifecycle_guard: Option<&'a rustfs_lock::NamespaceLockGuard>,
    pub(crate) namespace_lock_lost_signal: Option<Arc<rustfs_lock::distributed_lock::LockLostSignal>>,
    pub(crate) object_mutation_fence: Option<&'a SourceCleanupMutationFence>,
@@ -1534,9 +1487,10 @@ pub(crate) async fn cleanup_source_entry_if_unchanged(
        )
    };

-    if bucket_fence
-        .lifecycle_guard
-        .is_some_and(rustfs_lock::NamespaceLockGuard::is_lock_lost)
+    if bucket_fence.lifecycle_owner.is_some_and(|owner| owner.is_lock_lost())
+        || bucket_fence
+            .lifecycle_guard
+            .is_some_and(rustfs_lock::NamespaceLockGuard::is_lock_lost)
    {
        return Err(SourceCleanupError::Storage(Error::other(format!(
            "{op_label}: bucket incarnation fence was lost before source cleanup"
@@ -1575,6 +1529,9 @@ pub(crate) async fn cleanup_source_entry_if_unchanged(
    if let Some(object_mutation_fence) = bucket_fence.object_mutation_fence {
        object_mutation_fence.add_namespace_lock_fence(&mut opts);
    }
+    if let Some(owner) = bucket_fence.lifecycle_owner {
+        owner.attach_owner(&mut opts);
+    }
    if let Some(bucket_lifecycle_guard) = bucket_fence.lifecycle_guard {
        opts.add_bucket_lifecycle_lock_guard(bucket_lifecycle_guard);
    }
@@ -3597,268 +3554,6 @@ mod tests {
        assert!(!can_replace_stale_data_movement_target(&delete_marker, &opts));
    }

-    #[test]
-    fn data_movement_identity_keeps_logical_directory_and_literal_suffix_distinct() {
-        let fi = FileInfo {
-            version_id: Some(Uuid::from_u128(1)),
-            mod_time: Some(OffsetDateTime::UNIX_EPOCH),
-            size: 10,
-            metadata: HashMap::from([("etag".to_owned(), "directory-etag".to_owned())]),
-            ..Default::default()
-        };
-        let source = ObjectInfo::from_file_info(&fi, "bucket", "directory/", true);
-        let target = ObjectInfo::from_file_info(&fi, "bucket", &encode_dir_object("directory/"), true);
-        assert_eq!(target.name, "directory/", "real metadata construction returns the logical name");
-        assert!(is_equivalent_data_movement_object_identity(&source, &target, true, false));
-        assert!(is_equivalent_data_movement_capacity_target(&source, &target));
-
-        let literal = ObjectInfo {
-            name: "directory__XLDIR__".to_owned(),
-            ..target
-        };
-        assert!(crate::bucket::utils::is_valid_object_name(&literal.name));
-        assert!(crate::bucket::utils::is_valid_object_name(&source.name));
-        assert!(!is_equivalent_data_movement_object_identity(&source, &literal, true, false));
-    }
-
-    #[tokio::test]
-    async fn data_movement_equivalence_validates_each_real_native_multipart_publication() {
-        use crate::disk::DiskAPI as _;
-        use crate::disk::multipart_source::{is_publication_metadata_key, publication_identity_from_metadata};
-        use crate::storage_api_contracts::multipart::MultipartOperations as _;
-        use crate::storage_api_contracts::object::{ObjectIO as _, ObjectOperations as _};
-
-        let (_source_dirs, source_disks, source_set) = crate::set_disk::hermetic_set_disks_isolated(4).await;
-        let (_target_dirs, target_disks, target_set) = crate::set_disk::hermetic_set_disks_isolated(4).await;
-        let bucket = "native-multipart-migration-equivalence";
-        let object = "native-multipart-migration-equivalence-object";
-        for disk in source_disks.iter().chain(&target_disks) {
-            disk.make_volume(bucket).await.expect("create both real bucket volumes");
-        }
-        let body = vec![0x39; 1 << 20];
-        let upload = source_set
-            .new_multipart_upload(bucket, object, &ObjectOptions::default())
-            .await
-            .expect("real source upload");
-        let part = source_set
-            .put_object_part(
-                bucket,
-                object,
-                &upload.upload_id,
-                1,
-                &mut PutObjReader::from_vec(body.clone()),
-                &ObjectOptions::default(),
-            )
-            .await
-            .expect("real source part");
-        source_set
-            .clone()
-            .complete_multipart_upload(
-                bucket,
-                object,
-                &upload.upload_id,
-                vec![CompletePart {
-                    part_num: part.part_num,
-                    etag: part.etag,
-                    ..Default::default()
-                }],
-                &ObjectOptions::default(),
-            )
-            .await
-            .expect("real native source publication");
-        let source = source_set
-            .get_object_info(bucket, object, &ObjectOptions::default())
-            .await
-            .expect("actual committed source metadata");
-        let create_opts = data_movement_new_multipart_opts(&source, 0);
-        let moved_upload = target_set
-            .new_multipart_upload(bucket, object, &create_opts)
-            .await
-            .expect("real temporary transfer upload");
-        let part_opts = ObjectOptions {
-            part_number: Some(source.parts[0].number),
-            preserve_etag: Some(source.parts[0].etag.clone()),
-            data_movement: true,
-            ..Default::default()
-        };
-        let part = target_set
-            .put_object_part(
-                bucket,
-                object,
-                &moved_upload.upload_id,
-                1,
-                &mut PutObjReader::from_vec(body.clone()),
-                &part_opts,
-            )
-            .await
-            .expect("real transfer part");
-        let complete_opts = data_movement_complete_multipart_opts(&source, 0, false).expect("compatible transfer options");
-        target_set
-            .clone()
-            .complete_multipart_upload(
-                bucket,
-                object,
-                &moved_upload.upload_id,
-                vec![CompletePart {
-                    part_num: part.part_num,
-                    etag: part.etag,
-                    ..Default::default()
-                }],
-                &complete_opts,
-            )
-            .await
-            .expect("real native migration publication");
-        let target = target_set
-            .get_object_info(bucket, object, &ObjectOptions::default())
-            .await
-            .expect("actual committed target metadata");
-        let source_publication = publication_identity_from_metadata(&source.user_defined)
-            .expect("source tuple decodes")
-            .expect("source producer retained its native tuple");
-        let target_publication = publication_identity_from_metadata(&target.user_defined)
-            .expect("target tuple decodes")
-            .expect("target producer retained its own native tuple");
-        assert_ne!(
-            source_publication, target_publication,
-            "physical publications have distinct attempts and directories"
-        );
-        assert_ne!(source.data_dir, target.data_dir);
-        assert!(
-            are_equivalent_data_movement_parts(&source.parts, &target.parts),
-            "the real transport preserves each part ETag"
-        );
-        assert!(is_equivalent_data_movement_object(&source, &target));
-        assert_eq!(
-            resolve_data_movement_overwrite_resume_copy(
-                &Error::PreconditionFailed,
-                Ok(Some(target.clone())),
-                &source,
-                0,
-                1,
-                false,
-            )
-            .expect("actual equivalent target resolves the failed create-only condition"),
-            Some(DataMovementCopy::Committed)
-        );
-        for set in [&source_set, &target_set] {
-            let mut reader = set
-                .get_object_reader(bucket, object, None, http::HeaderMap::new(), &ObjectOptions::default())
-                .await
-                .expect("actual source and target bodies");
-            let mut actual = Vec::new();
-            reader.stream.read_to_end(&mut actual).await.expect("read full actual body");
-            assert_eq!(actual, body);
-        }
-        for changed in [
-            "data-dir",
-            "version",
-            "mtime",
-            "bucket",
-            "key",
-            "user-metadata",
-            "etag",
-            "checksum",
-            "parts",
-            "condition",
-            "status",
-            "unknown",
-        ] {
-            let mut invalid = target.clone();
-            match changed {
-                "data-dir" => {
-                    let mut historical = publication_identity_from_metadata(&invalid.user_defined)
-                        .expect("real tuple decodes")
-                        .expect("real tuple exists");
-                    historical.final_data_dir = Uuid::nil();
-                    let encoded = hex_simd::encode_to_string(
-                        rmp_serde::to_vec_named(&historical).expect("encode structurally invalid historical tuple"),
-                        hex_simd::AsciiCase::Lower,
-                    );
-                    for (key, value) in Arc::make_mut(&mut invalid.user_defined).iter_mut() {
-                        if is_publication_metadata_key(key) {
-                            value.clone_from(&encoded);
-                        }
-                    }
-                }
-                "version" => invalid.version_id = Some(Uuid::new_v4()),
-                "mtime" => invalid.mod_time = invalid.mod_time.map(|time| time + time::Duration::seconds(1)),
-                "bucket" => invalid.bucket.push_str("-other"),
-                "key" => invalid.name.push_str("-other"),
-                "etag" => invalid.etag = Some("different-current-etag".to_owned()),
-                "checksum" => invalid.checksum = Some(Bytes::from_static(b"different-current-checksum")),
-                "parts" => Arc::make_mut(&mut invalid.parts)[0].etag.push_str("-other"),
-                "user-metadata" => {
-                    Arc::make_mut(&mut invalid.user_defined).insert("x-amz-meta-extra".to_owned(), "changed".to_owned());
-                }
-                suffix => rustfs_utils::http::insert_str(
-                    Arc::make_mut(&mut invalid.user_defined),
-                    &format!("multipart-source-{suffix}"),
-                    "unexpected".to_owned(),
-                ),
-            }
-            assert!(
-                !is_equivalent_data_movement_object(&source, &invalid),
-                "{changed} cannot bypass metadata equivalence"
-            );
-        }
-        let mut malformed = target.clone();
-        for (key, value) in Arc::make_mut(&mut malformed.user_defined).iter_mut() {
-            if is_publication_metadata_key(key) {
-                *value = "malformed".to_owned();
-            }
-        }
-        assert!(
-            !is_equivalent_data_movement_object(&source, &malformed),
-            "malformed publication cannot be ignored"
-        );
-        let mut conflicting = target.clone();
-        let aliases = conflicting
-            .user_defined
-            .keys()
-            .filter(|key| is_publication_metadata_key(key))
-            .cloned()
-            .collect::<Vec<_>>();
-        assert_eq!(aliases.len(), 2, "actual writer stores both canonical publication aliases");
-        Arc::make_mut(&mut conflicting.user_defined).insert(aliases[0].clone(), "conflicting".to_owned());
-        assert!(
-            !is_equivalent_data_movement_object(&source, &conflicting),
-            "conflicting aliases cannot be ignored"
-        );
-        let mut malformed_source = source.clone();
-        for (key, value) in Arc::make_mut(&mut malformed_source.user_defined).iter_mut() {
-            if is_publication_metadata_key(key) {
-                *value = "malformed-source".to_owned();
-            }
-        }
-        assert!(
-            !is_equivalent_data_movement_object(&malformed_source, &target),
-            "a malformed present source publication cannot be projected away"
-        );
-        let mut takeover = target.clone();
-        takeover.mod_time = source.mod_time.map(|time| time + time::Duration::seconds(1));
-        rustfs_utils::http::insert_str(
-            Arc::make_mut(&mut takeover.user_defined),
-            SUFFIX_DATA_MOVEMENT_UPLOAD,
-            data_movement_upload_identity(&source),
-        );
-        assert!(is_data_movement_upload_takeover_target(&source, &takeover, true));
-        rustfs_utils::http::insert_str(
-            Arc::make_mut(&mut takeover.user_defined),
-            SUFFIX_DATA_MOVEMENT_UPLOAD,
-            "different-transfer-identity".to_owned(),
-        );
-        assert!(
-            !is_data_movement_upload_takeover_target(&source, &takeover, true),
-            "historical publication cannot bypass the exact current transfer identity"
-        );
-        let mut legacy = target.clone();
-        Arc::make_mut(&mut legacy.user_defined).retain(|key, _| !is_publication_metadata_key(key));
-        assert!(
-            is_equivalent_data_movement_object(&source, &legacy),
-            "a legacy destination may lack per-copy provenance"
-        );
-    }
-
    #[test]
    fn test_is_equivalent_data_movement_object_accepts_matching_metadata() {
        let version_id = Uuid::nil();
@@ -3360,6 +3360,7 @@ mod tests {
            pool_meta_save_gate: TokioMutex::default(),
            ctx,
            bucket_fence_registry: Arc::default(),
+            ordinary_classification: Default::default(),
        })
    }

@@ -159,20 +159,6 @@ pub fn lstat_std(path: impl AsRef<Path>) -> io::Result<Metadata> {
    std::fs::symlink_metadata(path)
 }

-pub fn create_dir_all_std(path: &Path) -> io::Result<()> {
-    match std::fs::create_dir(path) {
-        Ok(()) => Ok(()),
-        Err(e) if e.kind() == io::ErrorKind::AlreadyExists => Ok(()),
-        Err(e) if e.kind() == io::ErrorKind::NotFound => std::fs::create_dir_all(path),
-        Err(e) => Err(e),
-    }
-}
-
-pub async fn make_dir_all(path: impl AsRef<Path>) -> io::Result<()> {
-    let path = path.as_ref().to_path_buf();
-    tokio::task::spawn_blocking(move || create_dir_all_std(&path)).await?
-}
-
 fn is_dir_error(e: &io::Error) -> bool {
    e.raw_os_error() == Some(libc::EISDIR)
        || e.kind() == io::ErrorKind::IsADirectory
@@ -220,11 +206,6 @@ pub fn remove_all_std(path: impl AsRef<Path>) -> io::Result<()> {
    }
 }

-#[cfg(test)]
-pub async fn mkdir(path: impl AsRef<Path>) -> io::Result<()> {
-    fs::create_dir(path.as_ref()).await
-}
-
 pub async fn rename(from: impl AsRef<Path>, to: impl AsRef<Path>) -> io::Result<()> {
    fs::rename(from, to).await
 }
@@ -250,7 +231,7 @@ impl BucketExistenceCache {
        }
    }

-    fn check_exists(&self, path: &Path) -> Option<bool> {
+    fn check_exists(&self, path: &PathBuf) -> Option<bool> {
        let mut cache = self.cache.lock().ok()?;
        if let Some((timestamp, exists)) = cache.get(path) {
            if timestamp.elapsed() < self.ttl {
@@ -267,7 +248,7 @@ impl BucketExistenceCache {
        }
    }

-    fn invalidate(&self, path: &Path) {
+    fn invalidate(&self, path: &PathBuf) {
        if let Ok(mut cache) = self.cache.lock() {
            cache.remove(path);
        }
@@ -279,16 +260,15 @@ static BUCKET_EXISTENCE_CACHE: std::sync::LazyLock<BucketExistenceCache> =

 /// Cached access check - reduces statx syscalls
 pub async fn cached_access(path: impl AsRef<Path>) -> io::Result<()> {
-    let path = path.as_ref();
+    let path_buf = path.as_ref().to_path_buf();

-    if let Some(exists) = BUCKET_EXISTENCE_CACHE.check_exists(path) {
+    if let Some(exists) = BUCKET_EXISTENCE_CACHE.check_exists(&path_buf) {
        if exists {
            return Ok(());
        }
        return Err(io::Error::new(io::ErrorKind::NotFound, "bucket not found (cached)"));
    }

-    let path_buf = path.to_path_buf();
    let result = fs::metadata(&path_buf).await;

    match &result {
@@ -304,7 +284,7 @@ pub async fn cached_access(path: impl AsRef<Path>) -> io::Result<()> {
 }

 pub fn invalidate_bucket_cache(path: impl AsRef<Path>) {
-    BUCKET_EXISTENCE_CACHE.invalidate(path.as_ref());
+    BUCKET_EXISTENCE_CACHE.invalidate(&path.as_ref().to_path_buf());
 }

 #[cfg(test)]
@@ -484,17 +464,6 @@ mod tests {
        assert!(metadata.file_type().is_symlink());
    }

-    #[tokio::test]
-    async fn test_make_dir_all() {
-        let temp_dir = TempDir::new().unwrap();
-        let nested_path = temp_dir.path().join("level1").join("level2").join("level3");
-
-        // Should create nested directories
-        assert!(make_dir_all(&nested_path).await.is_ok());
-        assert!(nested_path.exists());
-        assert!(nested_path.is_dir());
-    }
-
    #[tokio::test]
    async fn test_remove_file() {
        let temp_dir = TempDir::new().unwrap();
@@ -567,17 +536,6 @@ mod tests {
        assert!(!dir_path.exists());
    }

-    #[tokio::test]
-    async fn test_mkdir() {
-        let temp_dir = TempDir::new().unwrap();
-        let dir_path = temp_dir.path().join("test_mkdir");
-
-        // Create directory
-        assert!(mkdir(&dir_path).await.is_ok());
-        assert!(dir_path.exists());
-        assert!(dir_path.is_dir());
-    }
-
    #[tokio::test]
    async fn test_rename() {
        let temp_dir = TempDir::new().unwrap();
@@ -0,0 +1,740 @@
+// Copyright 2026 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use crate::disk::error::{DiskError, Result};
+use std::{fs::File, sync::Arc};
+
+/// A target disk's admitted artifact publication. Physical mutation workers
+/// retain this Arc until their final syscall and rollback have finished.
+pub struct ArtifactLease {
+    _active: File,
+    _key_directory: File,
+    _seal_directory: File,
+    _root: File,
+}
+
+pub type ArtifactPutLease = ArtifactLease;
+pub type ArtifactRepairLease = ArtifactLease;
+
+/// Read-only census owns both already-closed physical mutation domains.
+pub(super) struct ArtifactInventoryLease {
+    _put: Arc<ArtifactLease>,
+    _repair: Arc<ArtifactLease>,
+}
+
+pub(super) async fn drain_closed(root: File, key: [u8; 32], deadline: tokio::time::Instant) -> Result<ArtifactInventoryLease> {
+    #[cfg(unix)]
+    {
+        unix::drain_closed(root, key, deadline).await
+    }
+    #[cfg(not(unix))]
+    {
+        let _ = (root, key, deadline);
+        Err(DiskError::UnsupportedDisk)
+    }
+}
+
+#[derive(Clone, Copy)]
+pub(crate) enum Domain {
+    Put,
+    Repair,
+}
+
+impl Domain {
+    fn directory(self) -> &'static str {
+        match self {
+            Self::Put => ".rustfs-artifact-put-seals",
+            Self::Repair => ".rustfs-artifact-repair-seals",
+        }
+    }
+
+    fn closed(self) -> &'static [u8] {
+        match self {
+            Self::Put => b"rustfs-artifact-put-sealed-v1\n",
+            Self::Repair => b"rustfs-artifact-repair-sealed-v1\n",
+        }
+    }
+}
+
+pub(super) async fn pinned_root(disk: &super::LocalDisk) -> Result<File> {
+    #[cfg(target_os = "linux")]
+    let root = disk.mount_lease.clone();
+    #[cfg(all(unix, not(target_os = "linux")))]
+    let root = disk.artifact_identity_root.clone();
+    #[cfg(not(unix))]
+    let _ = disk;
+    tokio::task::spawn_blocking(move || {
+        #[cfg(unix)]
+        {
+            root.try_clone().map_err(DiskError::from)
+        }
+        #[cfg(not(unix))]
+        {
+            Err(DiskError::other("artifact disk leases require Unix"))
+        }
+    })
+    .await
+    .map_err(DiskError::from)?
+}
+
+pub(super) async fn acquire(root: File, key: [u8; 32]) -> Result<Arc<ArtifactPutLease>> {
+    acquire_in(root, key, Domain::Put).await
+}
+
+pub(super) async fn acquire_in(root: File, key: [u8; 32], domain: Domain) -> Result<Arc<ArtifactLease>> {
+    #[cfg(unix)]
+    {
+        unix::acquire(root, key, domain).await
+    }
+    #[cfg(not(unix))]
+    {
+        let _ = (root, key, domain);
+        Err(DiskError::other("artifact disk leases require Unix"))
+    }
+}
+
+pub(super) async fn seal(root: File, key: [u8; 32]) -> Result<()> {
+    seal_in(root, key, Domain::Put).await
+}
+
+pub(super) async fn seal_in(root: File, key: [u8; 32], domain: Domain) -> Result<()> {
+    #[cfg(unix)]
+    {
+        unix::seal(root, key, domain).await
+    }
+    #[cfg(not(unix))]
+    {
+        let _ = (root, key, domain);
+        Err(DiskError::other("artifact disk leases require Unix"))
+    }
+}
+
+#[cfg(unix)]
+mod unix {
+    use super::*;
+    use rustix::fs::{FlockOperation, Mode, OFlags, flock, mkdirat, openat};
+    use rustix::io::Errno;
+    use std::{io, io::Read, io::Write, os::unix::fs::MetadataExt, time::Duration};
+
+    const POLL_INTERVAL: Duration = Duration::from_millis(10);
+    const LOCK_TIMEOUT: Duration = Duration::from_secs(30);
+
+    struct Opened {
+        root: File,
+        seals: File,
+        key: File,
+        admission: File,
+        active: File,
+        domain: Domain,
+    }
+
+    fn invalid() -> io::Error {
+        io::Error::new(io::ErrorKind::InvalidData, "invalid artifact seal filesystem state")
+    }
+
+    fn directory(parent: &File, name: &str, device: u64) -> io::Result<File> {
+        match mkdirat(parent, name, Mode::RWXU) {
+            Ok(()) | Err(Errno::EXIST) => {}
+            Err(error) => return Err(error.into()),
+        }
+        let file = File::from(openat(
+            parent,
+            name,
+            OFlags::RDONLY | OFlags::DIRECTORY | OFlags::NOFOLLOW | OFlags::CLOEXEC,
+            Mode::empty(),
+        )?);
+        let metadata = file.metadata()?;
+        if !metadata.is_dir() || metadata.dev() != device || metadata.mode() & 0o077 != 0 {
+            return Err(invalid());
+        }
+        Ok(file)
+    }
+
+    fn regular(file: &File, device: u64) -> io::Result<std::fs::Metadata> {
+        let metadata = file.metadata()?;
+        if !metadata.is_file() || metadata.dev() != device || metadata.nlink() != 1 || metadata.mode() & 0o077 != 0 {
+            return Err(invalid());
+        }
+        Ok(metadata)
+    }
+
+    fn lock_file(parent: &File, name: &str, device: u64) -> io::Result<File> {
+        let file = File::from(openat(
+            parent,
+            name,
+            OFlags::CREATE | OFlags::RDWR | OFlags::NOFOLLOW | OFlags::CLOEXEC | OFlags::NONBLOCK,
+            Mode::RUSR | Mode::WUSR,
+        )?);
+        if regular(&file, device)?.len() != 0 {
+            return Err(invalid());
+        }
+        Ok(file)
+    }
+
+    impl Opened {
+        fn open(root: File, key: [u8; 32], domain: Domain) -> io::Result<Self> {
+            let metadata = root.metadata()?;
+            if !metadata.is_dir() {
+                return Err(invalid());
+            }
+            let seals = directory(&root, domain.directory(), metadata.dev())?;
+            let name = hex_simd::encode_to_string(key, hex_simd::AsciiCase::Lower);
+            let key = directory(&seals, &name, metadata.dev())?;
+            // Neither lock inode is ever removed or replaced, including after
+            // closing. Independent processes must always lock the same inode.
+            let admission = lock_file(&key, "admission.lock", metadata.dev())?;
+            let active = lock_file(&key, "active.lock", metadata.dev())?;
+            Ok(Self {
+                root,
+                seals,
+                key,
+                admission,
+                active,
+                domain,
+            })
+        }
+
+        fn closed(&self) -> io::Result<Option<File>> {
+            self.closed_with_flags(OFlags::RDWR)
+        }
+
+        fn closed_with_flags(&self, access: OFlags) -> io::Result<Option<File>> {
+            let mut file = match openat(
+                &self.key,
+                "closed",
+                access | OFlags::NOFOLLOW | OFlags::CLOEXEC | OFlags::NONBLOCK,
+                Mode::empty(),
+            ) {
+                Ok(file) => File::from(file),
+                Err(Errno::NOENT) => return Ok(None),
+                Err(error) => return Err(error.into()),
+            };
+            let length = u64::try_from(self.domain.closed().len()).map_err(|_| invalid())?;
+            if regular(&file, self.root.metadata()?.dev())?.len() != length {
+                return Err(invalid());
+            }
+            let mut bytes = vec![0; self.domain.closed().len()];
+            file.read_exact(&mut bytes)?;
+            if bytes != self.domain.closed() {
+                return Err(invalid());
+            }
+            Ok(Some(file))
+        }
+
+        fn admit(self) -> io::Result<Arc<ArtifactLease>> {
+            if self.closed()?.is_some() {
+                return Err(io::Error::new(
+                    io::ErrorKind::PermissionDenied,
+                    "artifact attempt mutation domain is closed",
+                ));
+            }
+            // Admission serializes the closed check with taking this shared
+            // physical owner. A sealer cannot pass between those two steps.
+            flock(&self.active, FlockOperation::NonBlockingLockShared)?;
+            flock(&self.admission, FlockOperation::Unlock)?;
+            Ok(Arc::new(ArtifactLease {
+                _active: self.active,
+                _key_directory: self.key,
+                _seal_directory: self.seals,
+                _root: self.root,
+            }))
+        }
+
+        fn close(self) -> io::Result<Self> {
+            let marker = match self.closed()? {
+                Some(marker) => marker,
+                None => {
+                    let mut marker = File::from(openat(
+                        &self.key,
+                        "closed",
+                        OFlags::CREATE | OFlags::EXCL | OFlags::RDWR | OFlags::NOFOLLOW | OFlags::CLOEXEC,
+                        Mode::RUSR | Mode::WUSR,
+                    )?);
+                    regular(&marker, self.root.metadata()?.dev())?;
+                    marker.write_all(self.domain.closed())?;
+                    marker
+                }
+            };
+            // No admission is released until the permanent denial and every
+            // ancestor entry are durable. A failed/cancelled close never removes it.
+            marker.sync_all()?;
+            self.admission.sync_all()?;
+            self.active.sync_all()?;
+            self.key.sync_all()?;
+            self.seals.sync_all()?;
+            self.root.sync_all()?;
+            flock(&self.admission, FlockOperation::Unlock)?;
+            Ok(self)
+        }
+    }
+
+    async fn lock(file: &File, operation: FlockOperation) -> io::Result<()> {
+        tokio::time::timeout(LOCK_TIMEOUT, async {
+            loop {
+                match flock(file, operation) {
+                    Ok(()) => return Ok(()),
+                    Err(Errno::WOULDBLOCK | Errno::INTR) => tokio::time::sleep(POLL_INTERVAL).await,
+                    Err(error) => return Err(error.into()),
+                }
+            }
+        })
+        .await
+        .map_err(|_| io::Error::new(io::ErrorKind::TimedOut, "artifact disk lease lock deadline"))?
+    }
+
+    async fn open(root: File, key: [u8; 32], domain: Domain) -> Result<Opened> {
+        tokio::task::spawn_blocking(move || Opened::open(root, key, domain))
+            .await
+            .map_err(DiskError::from)?
+            .map_err(DiskError::from)
+    }
+
+    fn read_error(error: io::Error) -> DiskError {
+        match error.kind() {
+            io::ErrorKind::NotFound => DiskError::other("artifact inventory requires closed PUT and repair domains"),
+            io::ErrorKind::InvalidData | io::ErrorKind::NotADirectory => DiskError::FileCorrupt,
+            io::ErrorKind::TimedOut => DiskError::Timeout,
+            _ if error.raw_os_error() == Some(Errno::LOOP.raw_os_error()) => DiskError::FileCorrupt,
+            _ => DiskError::from(error),
+        }
+    }
+
+    fn existing_directory(parent: &File, name: &str, device: u64) -> io::Result<File> {
+        let file = File::from(openat(
+            parent,
+            name,
+            OFlags::RDONLY | OFlags::DIRECTORY | OFlags::NOFOLLOW | OFlags::CLOEXEC,
+            Mode::empty(),
+        )?);
+        let metadata = file.metadata()?;
+        if metadata.dev() != device || metadata.mode() & 0o077 != 0 {
+            return Err(invalid());
+        }
+        Ok(file)
+    }
+
+    fn existing(root: File, key: [u8; 32], domain: Domain) -> io::Result<Opened> {
+        let device = root.metadata()?.dev();
+        let seals = existing_directory(&root, domain.directory(), device)?;
+        let name = hex_simd::encode_to_string(key, hex_simd::AsciiCase::Lower);
+        let key = existing_directory(&seals, &name, device)?;
+        let lock = |name| -> io::Result<File> {
+            let file = File::from(openat(
+                &key,
+                name,
+                OFlags::RDONLY | OFlags::NOFOLLOW | OFlags::CLOEXEC | OFlags::NONBLOCK,
+                Mode::empty(),
+            )?);
+            if regular(&file, device)?.len() != 0 {
+                return Err(invalid());
+            }
+            Ok(file)
+        };
+        let admission = lock("admission.lock")?;
+        let active = lock("active.lock")?;
+        let opened = Opened {
+            root,
+            seals,
+            key,
+            admission,
+            active,
+            domain,
+        };
+        if opened.closed_with_flags(OFlags::RDONLY)?.is_none() {
+            return Err(io::Error::from(io::ErrorKind::NotFound));
+        }
+        Ok(opened)
+    }
+
+    fn retained(opened: Opened) -> Arc<ArtifactLease> {
+        Arc::new(ArtifactLease {
+            _active: opened.active,
+            _key_directory: opened.key,
+            _seal_directory: opened.seals,
+            _root: opened.root,
+        })
+    }
+
+    pub(super) async fn drain_closed(
+        root: File,
+        key: [u8; 32],
+        deadline: tokio::time::Instant,
+    ) -> Result<ArtifactInventoryLease> {
+        let (put, repair) = tokio::task::spawn_blocking(move || {
+            let put = existing(root.try_clone()?, key, Domain::Put)?;
+            let repair = existing(root, key, Domain::Repair)?;
+            Ok::<_, io::Error>((put, repair))
+        })
+        .await
+        .map_err(DiskError::from)?
+        .map_err(read_error)?;
+        // Lock order: closed PUT active exclusive -> closed repair active
+        // exclusive. No admission lock is acquired and no seal is created.
+        tokio::time::timeout_at(deadline, async {
+            lock(&put.active, FlockOperation::NonBlockingLockExclusive).await?;
+            lock(&repair.active, FlockOperation::NonBlockingLockExclusive).await
+        })
+        .await
+        .map_err(|_| DiskError::Timeout)?
+        .map_err(read_error)?;
+        Ok(ArtifactInventoryLease {
+            _put: retained(put),
+            _repair: retained(repair),
+        })
+    }
+
+    pub(super) async fn acquire(root: File, key: [u8; 32], domain: Domain) -> Result<Arc<ArtifactLease>> {
+        let opened = open(root, key, domain).await?;
+        // Lock order: admission exclusive -> active shared. Contention sleeps
+        // asynchronously; no blocking executor thread waits for another owner.
+        lock(&opened.admission, FlockOperation::NonBlockingLockExclusive).await?;
+        tokio::task::spawn_blocking(move || opened.admit())
+            .await
+            .map_err(DiskError::from)?
+            .map_err(DiskError::from)
+    }
+
+    pub(super) async fn seal(root: File, key: [u8; 32], domain: Domain) -> Result<()> {
+        let opened = open(root, key, domain).await?;
+        lock(&opened.admission, FlockOperation::NonBlockingLockExclusive).await?;
+        let opened = tokio::task::spawn_blocking(move || opened.close())
+            .await
+            .map_err(DiskError::from)??;
+        // Closing is already durable. Cancellation or timeout here only loses
+        // the confirmation; admission stays permanently closed across reopen.
+        lock(&opened.active, FlockOperation::NonBlockingLockExclusive).await?;
+        Ok(())
+    }
+}
+
+#[cfg(all(test, unix))]
+mod tests {
+    use super::*;
+    use std::{path::Path, time::Duration};
+
+    const KEY: [u8; 32] = [7; 32];
+
+    fn root(path: &Path) -> File {
+        use rustix::fs::{Mode, OFlags, open};
+        File::from(
+            open(
+                path,
+                OFlags::RDONLY | OFlags::DIRECTORY | OFlags::NOFOLLOW | OFlags::CLOEXEC,
+                Mode::empty(),
+            )
+            .expect("open pinned test root"),
+        )
+    }
+
+    fn directory(path: &Path) -> std::path::PathBuf {
+        path.join(Domain::Put.directory())
+            .join(hex_simd::encode_to_string(KEY, hex_simd::AsciiCase::Lower))
+    }
+
+    async fn closed(path: &Path) {
+        tokio::time::timeout(Duration::from_secs(5), async {
+            while !directory(path).join("closed").exists() {
+                tokio::time::sleep(Duration::from_millis(5)).await;
+            }
+        })
+        .await
+        .expect("sealer reaches its monotonic close point");
+    }
+
+    #[tokio::test]
+    async fn artifact_repair_closing_domain_is_independent_and_survives_reopen() {
+        let temp = tempfile::tempdir().expect("disk root");
+        seal(root(temp.path()), KEY).await.expect("PUT closes first");
+        let repair = acquire_in(root(temp.path()), KEY, Domain::Repair)
+            .await
+            .expect("PUT closure permits existing-version repair");
+        assert!(acquire(root(temp.path()), KEY).await.is_err());
+        drop(repair);
+        seal_in(root(temp.path()), KEY, Domain::Repair)
+            .await
+            .expect("repair closes independently");
+        assert!(acquire_in(root(temp.path()), KEY, Domain::Repair).await.is_err());
+        seal_in(root(temp.path()), KEY, Domain::Repair)
+            .await
+            .expect("reopened repair close is durable");
+
+        let other = [8; 32];
+        seal_in(root(temp.path()), other, Domain::Repair)
+            .await
+            .expect("close only repair admission");
+        drop(
+            acquire(root(temp.path()), other)
+                .await
+                .expect("repair closure permits PUT domain"),
+        );
+    }
+
+    #[tokio::test]
+    async fn artifact_repair_cancelled_waiter_keeps_physical_owner_and_durable_close() {
+        let temp = tempfile::tempdir().expect("disk root");
+        let writer = acquire_in(root(temp.path()), KEY, Domain::Repair)
+            .await
+            .expect("repair admitted");
+        let (entered, started) = tokio::sync::oneshot::channel();
+        let (release, waiting) = std::sync::mpsc::channel();
+        let owner = tokio::spawn(async move {
+            tokio::task::spawn_blocking(move || {
+                let _owner = writer;
+                let _ = entered.send(());
+                let _ = waiting.recv();
+            })
+            .await
+            .expect("repair worker");
+        });
+        started.await.expect("physical repair entered");
+        owner.abort();
+        assert!(owner.await.expect_err("cancel repair waiter").is_cancelled());
+        let sealer = tokio::spawn(seal_in(root(temp.path()), KEY, Domain::Repair));
+        let marker = temp
+            .path()
+            .join(Domain::Repair.directory())
+            .join(hex_simd::encode_to_string(KEY, hex_simd::AsciiCase::Lower))
+            .join("closed");
+        tokio::time::timeout(Duration::from_secs(5), async {
+            while !marker.exists() {
+                tokio::time::sleep(Duration::from_millis(5)).await;
+            }
+        })
+        .await
+        .expect("repair admission durably closes");
+        assert!(!sealer.is_finished(), "ARTIFACT_REPAIR_CANCELLED_PHYSICAL_TAIL");
+        sealer.abort();
+        assert!(sealer.await.expect_err("cancel repair close waiter").is_cancelled());
+        assert!(acquire_in(root(temp.path()), KEY, Domain::Repair).await.is_err());
+        let pending = seal_in(root(temp.path()), KEY, Domain::Repair);
+        tokio::pin!(pending);
+        assert!(
+            tokio::time::timeout(Duration::from_millis(50), &mut pending).await.is_err(),
+            "ARTIFACT_REPAIR_REOPEN_MUST_DRAIN_PHYSICAL_TAIL"
+        );
+        release.send(()).expect("release physical repair");
+        tokio::time::timeout(Duration::from_secs(5), &mut pending)
+            .await
+            .expect("physical drain bounded")
+            .expect("reopened close confirms repair drain");
+        assert!(acquire_in(root(temp.path()), KEY, Domain::Repair).await.is_err());
+    }
+
+    #[tokio::test]
+    async fn artifact_put_seal_waits_for_independent_openers_and_last_clone() {
+        let temp = tempfile::tempdir().expect("disk root");
+        let first = acquire(root(temp.path()), KEY).await.expect("first admitted writer");
+        let tail = first.clone();
+        let second = acquire(root(temp.path()), KEY).await.expect("independent shared writer");
+        let pending = seal(root(temp.path()), KEY);
+        tokio::pin!(pending);
+        assert!(
+            tokio::time::timeout(Duration::from_millis(50), &mut pending).await.is_err(),
+            "ARTIFACT_PUT_ACTIVE_WRITERS_DRAIN"
+        );
+        drop(first);
+        drop(second);
+        assert!(
+            tokio::time::timeout(Duration::from_millis(50), &mut pending).await.is_err(),
+            "ARTIFACT_PUT_PHYSICAL_CLONE_RETAINED"
+        );
+        assert!(acquire(root(temp.path()), KEY).await.is_err(), "ARTIFACT_PUT_CLOSE_REJECTS_ADMISSION");
+        drop(tail);
+        tokio::time::timeout(Duration::from_secs(5), &mut pending)
+            .await
+            .expect("physical tail drain bounded")
+            .expect("seal complete");
+        seal(root(temp.path()), KEY)
+            .await
+            .expect("independent reopen preserves closed state");
+        assert!(acquire(root(temp.path()), KEY).await.is_err(), "ARTIFACT_PUT_CLOSED_AFTER_REOPEN");
+    }
+
+    #[tokio::test]
+    async fn artifact_put_close_cancellation_leaves_durable_denial() {
+        let temp = tempfile::tempdir().expect("disk root");
+        let writer = acquire(root(temp.path()), KEY).await.expect("admitted writer");
+        let sealer = tokio::spawn(seal(root(temp.path()), KEY));
+        closed(temp.path()).await;
+        sealer.abort();
+        assert!(sealer.await.expect_err("cancel close waiter").is_cancelled());
+        assert!(
+            acquire(root(temp.path()), KEY).await.is_err(),
+            "ARTIFACT_PUT_CANCELLED_CLOSE_STAYS_CLOSED"
+        );
+        drop(writer);
+        seal(root(temp.path()), KEY).await.expect("reopen finishes physical drain");
+        assert!(acquire(root(temp.path()), KEY).await.is_err(), "ARTIFACT_PUT_CANCELLED_CLOSE_REOPEN");
+    }
+
+    #[tokio::test]
+    async fn artifact_put_physical_worker_retains_lease_after_waiter_cancellation() {
+        let temp = tempfile::tempdir().expect("disk root");
+        let writer = acquire(root(temp.path()), KEY).await.expect("physical writer admitted");
+        let (entered, started) = tokio::sync::oneshot::channel();
+        let (release, waiting) = std::sync::mpsc::channel();
+        let owner = tokio::spawn(async move {
+            tokio::task::spawn_blocking(move || {
+                let _physical_owner = writer;
+                let _ = entered.send(());
+                let _ = waiting.recv();
+            })
+            .await
+            .expect("physical worker");
+        });
+        started.await.expect("physical syscall entered");
+        owner.abort();
+        assert!(owner.await.expect_err("cancel async writer").is_cancelled());
+        let pending = seal(root(temp.path()), KEY);
+        tokio::pin!(pending);
+        assert!(
+            tokio::time::timeout(Duration::from_millis(50), &mut pending).await.is_err(),
+            "ARTIFACT_PUT_CANCELLED_PHYSICAL_TAIL"
+        );
+        release.send(()).expect("release physical worker");
+        tokio::time::timeout(Duration::from_secs(5), &mut pending)
+            .await
+            .expect("physical worker drains")
+            .expect("seal confirms real completion");
+    }
+
+    #[tokio::test]
+    async fn artifact_put_seal_waits_for_another_process() {
+        const CHILD_ROOT: &str = "RUSTFS_TEST_ARTIFACT_PUT_SEAL_ROOT";
+        if let Some(path) = std::env::var_os(CHILD_ROOT) {
+            seal(root(Path::new(&path)), KEY)
+                .await
+                .expect("child closes and drains parent writer");
+            assert!(acquire(root(Path::new(&path)), KEY).await.is_err(), "ARTIFACT_PUT_CHILD_CLOSED");
+            return;
+        }
+        struct Child(std::process::Child);
+        impl Drop for Child {
+            fn drop(&mut self) {
+                let _ = self.0.kill();
+                let _ = self.0.wait();
+            }
+        }
+        let temp = tempfile::tempdir().expect("disk root");
+        let writer = acquire(root(temp.path()), KEY).await.expect("parent owns physical write");
+        let mut child = Child(
+            std::process::Command::new(std::env::current_exe().expect("test executable"))
+                .args([
+                    "--exact",
+                    "disk::local::artifact_lease::tests::artifact_put_seal_waits_for_another_process",
+                ])
+                .env(CHILD_ROOT, temp.path())
+                .spawn()
+                .expect("start independent sealer"),
+        );
+        closed(temp.path()).await;
+        assert!(child.0.try_wait().expect("probe child").is_none(), "ARTIFACT_PUT_CROSS_PROCESS_DRAIN");
+        assert!(
+            acquire(root(temp.path()), KEY).await.is_err(),
+            "ARTIFACT_PUT_CROSS_PROCESS_ADMISSION_CLOSED"
+        );
+        drop(writer);
+        let status = tokio::time::timeout(Duration::from_secs(5), async {
+            loop {
+                if let Some(status) = child.0.try_wait().expect("child wait") {
+                    break status;
+                }
+                tokio::time::sleep(Duration::from_millis(10)).await;
+            }
+        })
+        .await
+        .expect("child physically drains");
+        assert!(status.success(), "ARTIFACT_PUT_CROSS_PROCESS_SEAL");
+        assert!(acquire(root(temp.path()), KEY).await.is_err(), "ARTIFACT_PUT_PROCESS_REOPEN_CLOSED");
+    }
+
+    #[tokio::test]
+    async fn artifact_put_lease_rejects_symlinks_at_every_seal_component() {
+        use std::os::unix::fs::{PermissionsExt, symlink};
+        for component in ["directory", "key", "admission.lock", "active.lock", "closed"] {
+            let temp = tempfile::tempdir().expect("disk root");
+            let outside = tempfile::tempdir().expect("symlink destination");
+            let sentinel = outside.path().join("untouched");
+            std::fs::write(&sentinel, b"unchanged").expect("sentinel");
+            let target = match component {
+                "directory" => temp.path().join(Domain::Put.directory()),
+                "key" => {
+                    std::fs::create_dir(temp.path().join(Domain::Put.directory())).expect("seal directory");
+                    std::fs::set_permissions(temp.path().join(Domain::Put.directory()), std::fs::Permissions::from_mode(0o700))
+                        .expect("private seal directory");
+                    directory(temp.path())
+                }
+                file => {
+                    drop(acquire(root(temp.path()), KEY).await.expect("initialize seal files"));
+                    let target = directory(temp.path()).join(file);
+                    if file != "closed" {
+                        std::fs::remove_file(&target).expect("replace fixture lock");
+                    }
+                    target
+                }
+            };
+            symlink(
+                if matches!(component, "directory" | "key") {
+                    outside.path()
+                } else {
+                    &sentinel
+                },
+                target,
+            )
+            .expect("symlink fixture");
+            assert!(
+                acquire(root(temp.path()), KEY).await.is_err(),
+                "ARTIFACT_PUT_SYMLINK_REJECTED: {component}"
+            );
+            assert!(
+                seal(root(temp.path()), KEY).await.is_err(),
+                "ARTIFACT_PUT_SYMLINK_SEAL_REJECTED: {component}"
+            );
+            assert_eq!(std::fs::read(&sentinel).expect("sentinel intact"), b"unchanged");
+        }
+    }
+
+    #[tokio::test]
+    async fn artifact_put_lease_rejects_corrupt_closed_marker() {
+        use std::os::unix::fs::PermissionsExt;
+        let temp = tempfile::tempdir().expect("disk root");
+        drop(acquire(root(temp.path()), KEY).await.expect("initialize seal files"));
+        let marker = directory(temp.path()).join("closed");
+        std::fs::write(&marker, b"partial").expect("corrupt marker fixture");
+        std::fs::set_permissions(&marker, std::fs::Permissions::from_mode(0o600)).expect("marker permissions");
+        assert!(acquire(root(temp.path()), KEY).await.is_err(), "ARTIFACT_PUT_CORRUPT_MARKER_FAILS_CLOSED");
+        assert!(seal(root(temp.path()), KEY).await.is_err(), "ARTIFACT_PUT_CORRUPT_MARKER_NOT_CONFIRMED");
+        assert_eq!(std::fs::read(marker).expect("corruption retained"), b"partial");
+    }
+
+    #[tokio::test]
+    async fn artifact_put_lease_stays_on_pinned_root_after_path_replacement() {
+        let temp = tempfile::tempdir().expect("disk root parent");
+        let current = temp.path().join("current");
+        let original = temp.path().join("original");
+        std::fs::create_dir(&current).expect("initial disk root");
+        let pin = root(&current);
+        drop(
+            acquire(pin.try_clone().expect("root pin clone"), KEY)
+                .await
+                .expect("initialize pinned seal"),
+        );
+        std::fs::rename(&current, &original).expect("replace configured pathname");
+        std::fs::create_dir(&current).expect("replacement disk root");
+        seal(pin, KEY).await.expect("close original disk through its descriptor");
+        assert!(directory(&original).join("closed").exists(), "ARTIFACT_PUT_ROOT_PINNED");
+        assert!(!current.join(Domain::Put.directory()).exists(), "ARTIFACT_PUT_REPLACEMENT_UNTOUCHED");
+        assert!(acquire(root(&original), KEY).await.is_err());
+    }
+}
@@ -281,12 +281,10 @@ type PreparedInlineMetadata = (
    Option<StagedRollbackBackup>,
    bool,
    os::PreparedRenameSource,
-    Option<Arc<os::PreparedPoolMetaBackup>>,
-    Option<super::pool_meta_native::DurableHeadReceipt>,
 );

 enum InlinePreparationOutcome {
-    Committed(RenameDataResp, Option<super::pool_meta_native::DurableHeadReceipt>),
+    Committed(RenameDataResp),
    CommitErr(DiskError),
    Prepared(PreparedInlineMetadata),
 }
@@ -347,6 +345,8 @@ async fn prepare_rename_commit_and_destination_metadata(
        let publication_root = publication_root.clone();
        os::run_blocking_namespace_operation(mutation_lease, move || {
            if create_source_parent {
+                #[cfg(test)]
+                super::volume_mutation_test_hooks::run(super::volume_mutation_test_hooks::Stage::Create, &source_parent);
                std::fs::create_dir_all(&source_parent)?;
            }
            let guard = match os::prepare_rename_commit_guard(&source_parent, &destination_parent, &base_dir, &publication_root) {
@@ -367,9 +367,15 @@ async fn prepare_rename_commit_and_destination_metadata(
    };
    #[cfg(not(any(windows, target_os = "linux")))]
    let result = {
-        let _ = mutation_lease;
        if create_source_parent {
-            fs::create_dir_all(source_parent).await.map_err(to_file_error)?;
+            let source_parent = source_parent.to_path_buf();
+            os::run_blocking_namespace_operation(mutation_lease, move || {
+                #[cfg(test)]
+                super::volume_mutation_test_hooks::run(super::volume_mutation_test_hooks::Stage::Create, &source_parent);
+                std::fs::create_dir_all(source_parent)
+            })
+            .await
+            .map_err(to_file_error)?;
        }
        let guard =
            os::prepare_rename_commit_guard(source_parent, destination_parent, base_dir, publication_root).map_err(|err| {
@@ -400,80 +406,31 @@ pub(in crate::disk) struct LocalRenamePreflightRejection(());
 pub(super) struct RenameDataState {
    namespace_owner: Option<Arc<dyn Send + Sync>>,
    preflight_rejection: Option<LocalRenamePreflightRejection>,
+    prepared: Option<Arc<os::NamespaceMutationLease>>,
 }

-// Keep optional native MPU state machines out of ordinary rename frames.
-// Construct the future here as well as pinning it, so its temporary stays off
-// the caller's poll stack. Call only from the existing native MPU branches.
-#[inline(never)]
-fn pin_multipart_future<F: std::future::Future>(build: impl FnOnce() -> F) -> std::pin::Pin<Box<F>> {
-    Box::pin(build())
+pub(in crate::disk) struct PreparedRenameData {
+    file_info: FileInfo,
+    mutation_lease: Arc<os::NamespaceMutationLease>,
 }

 impl LocalDisk {
-    #[tracing::instrument(name = "rename_data", target = "rustfs_ecstore::disk::local", level = "trace", skip_all)]
-    pub(super) async fn rename_data_inner(
+    async fn prepare_rename_data_admission(
        &self,
-        src_volume: &str,
-        src_path: &str,
        fi: FileInfo,
-        dst_volume: &str,
-        dst_path: &str,
-        state: &mut RenameDataState,
-    ) -> Result<RenameDataResp> {
-        super::multipart_staging::reject_noncanonical_scope(&self.root, self.io_root(), src_volume, src_path).inspect_err(
-            |_| {
-                state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-            },
-        )?;
-        super::multipart_staging::reject_noncanonical_scope(&self.root, self.io_root(), dst_volume, dst_path).inspect_err(
-            |_| {
-                state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-            },
-        )?;
-        super::pool_meta_native::reject_raw_path(&self.root, src_volume, src_path).inspect_err(|_| {
-            state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-        })?;
-        super::pool_meta_native::reject_noncanonical_object(&self.root, dst_volume, dst_path).inspect_err(|_| {
-            state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-        })?;
-        crate::hp_guard!("LocalDisk::rename_data");
-        #[cfg(feature = "e2e-test-hooks")]
-        if fi.is_healing() {
-            wait_for_heal_commit_test_barrier(&self.root, dst_volume, dst_path).await?;
-        }
+        source: (&str, &str),
+        destination: (&str, &str),
+        source_volume: Option<&str>,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<PreparedRenameData> {
+        let (src_volume, src_path) = source;
+        let (dst_volume, dst_path) = destination;
        let mut fi = fi;
-        let pool_meta_condition = if super::pool_meta_native::is_object(&self.root, dst_volume, dst_path) {
-            Some(super::pool_meta_native::PoolMetaNativeCasCondition::take(&mut fi).inspect_err(|_| {
-                state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-            })?)
-        } else {
-            None
-        };
-        let native_timing = pool_meta_condition.is_some();
-        if pool_meta_condition
-            .as_ref()
-            .is_some_and(|condition| fi.data_dir == Some(condition.attempt_id))
-        {
-            state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-            return Err(DiskError::FileCorrupt);
-        }
-        if let Some(condition) = &pool_meta_condition {
-            let new_identity = super::pool_meta_native::PoolMetaNativeFileIdentity::from_file_info(&fi)?;
-            if condition
-                .parent
-                .as_ref()
-                .is_some_and(|parent| new_identity.mod_time_unix_nanos <= parent.mod_time_unix_nanos)
-            {
-                state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-                return Err(DiskError::ConditionalDeleteConflict);
-            }
-        }
        // A non-force DeleteBucket must not remove a directory while a local
        // object commit is publishing into it. The peer's empty scan remains
        // optimistic; this lease establishes the local commit/delete order and
        // remains owned by any blocking syscall that outlives async cancellation.
-        let (dst_volume_dir, destination_object_path) = self.io_get_bucket_and_object_path(dst_volume, dst_path)?;
+        let destination_object_path = self.io_get_object_path(dst_volume, dst_path)?;
        let quota_fence_token =
            match rustfs_utils::http::metadata_compat::get_consistent_str(&fi.metadata, QUOTA_MUTATION_FENCE_METADATA_SUFFIX) {
                Some(value) => {
@@ -494,32 +451,8 @@ impl LocalDisk {
            Some(token) => Some(self.claim_quota_mutation_fence(dst_volume, dst_path, token).await?),
            None => None,
        };
-        // A failed fanout can undo the destination after this disk succeeded.
-        // Keep the original upload authoritative until coordinator quorum: only
-        // this private attempt's links and generated metadata may be consumed.
-        let multipart_staging = if src_volume == super::super::RUSTFS_META_MULTIPART_BUCKET {
-            Some(
-                pin_multipart_future(|| {
-                    self.prepare_multipart_commit_staging(src_path, &fi, dst_volume, state.namespace_owner.clone())
-                })
-                .await?,
-            )
-        } else {
-            None
-        };
-        let multipart_publication = if let Some(staging) = multipart_staging.as_ref() {
-            Some(pin_multipart_future(|| self.prepare_native_multipart_publication(src_path, &mut fi, staging)).await?)
-        } else {
-            None
-        };
-        let (src_volume, src_path) = match multipart_staging.as_ref() {
-            Some(staging) => (super::super::RUSTFS_META_TMP_BUCKET, staging.path.as_str()),
-            None => (src_volume, src_path),
-        };
        // Quota admission -> metadata RMW -> namespace/volume publication.
-        // MPU completion remains parts-backed even for a zero-byte part; its
-        // version-owned retirement anchor is published with that same DD.
-        let no_inline = fi.data.is_none() && (fi.size > 0 || multipart_publication.is_some());
+        let no_inline = fi.data.is_none() && fi.size > 0;
        let fi_healing = fi.is_healing();
        let staging_prefix = if fi_healing && !no_inline && src_volume == super::super::RUSTFS_META_TMP_BUCKET {
            Some(tmp_staging_mutation_path(&self.root, src_path)?)
@@ -531,50 +464,127 @@ impl LocalDisk {
                .strip_prefix(self.io_root())
                .map_err(|_| DiskError::InvalidPath)?,
        );
-        let metadata_wait = os::StageTimer::new(native_timing, "pool_meta_native_metadata_lease_wait");
-        let metadata_owner: Option<Arc<dyn Send + Sync>> = match multipart_staging.as_ref() {
-            Some(staging) => Some(Arc::new((state.namespace_owner.take(), staging.lease.clone()))),
-            None => state.namespace_owner.take(),
-        };
-        let metadata_lease = os::acquire_metadata_mutation_lease(&root_destination_object_path, metadata_owner).await;
-        drop(metadata_wait);
-        #[cfg(unix)]
-        let parent_receipt = if native_timing {
-            self.pool_meta_durable_head.lock().take().filter(|receipt| {
-                pool_meta_condition.as_ref().is_some_and(|condition| {
-                    condition.parent_raw_sha256.is_none() && condition.parent.as_ref() == Some(&receipt.identity)
-                })
-            })
+        let metadata_lease = os::acquire_metadata_mutation_lease(&root_destination_object_path, namespace_owner).await;
+        let mutation_lease = if let Some(source_volume) = source_volume {
+            os::acquire_rename_data_mutation_lease_for_volumes(
+                &self.root,
+                source_volume,
+                dst_volume,
+                &destination_object_path,
+                staging_prefix.as_deref(),
+                Some(metadata_lease),
+            )
+            .await
        } else {
-            None
+            os::acquire_rename_data_mutation_lease_with_owner(
+                &self.root,
+                dst_volume,
+                &destination_object_path,
+                staging_prefix.as_deref(),
+                Some(metadata_lease),
+            )
+            .await
        };
-        #[cfg(unix)]
-        let mut receipt_mutation = native_timing
-            .then(|| super::pool_meta_native::ReceiptMutationGuard::new(&self.pool_meta_durable_head, metadata_lease.clone()));
-        let namespace_wait = os::StageTimer::new(native_timing, "pool_meta_native_namespace_lease_wait");
-        let mutation_lease = os::acquire_rename_data_mutation_lease_with_owner(
-            &self.root,
-            dst_volume,
-            &root_destination_object_path,
-            staging_prefix.as_deref(),
-            Some(metadata_lease),
-        )
-        .await;
-        drop(namespace_wait);
        if let Some(claim) = quota_fence_claim {
            mutation_lease.attach_external_guard(claim);
        }
-        if let Some(condition) = &pool_meta_condition {
-            let _parent_check = os::StageTimer::new(native_timing, "pool_meta_native_parent_check");
-            if let Err(err) = self.check_pool_meta_parent(condition, &destination_object_path).await {
-                state.preflight_rejection = Some(LocalRenamePreflightRejection(()));
-                return Err(err);
-            }
-        }
        if fi.is_legacy_indexed_delete_marker() {
            fi.erasure.index = 0;
        }
        fi.validate_for_metadata_read()?;
+        Ok(PreparedRenameData {
+            file_info: fi,
+            mutation_lease,
+        })
+    }
+
+    pub(in crate::disk) async fn begin_legacy_rename_data(
+        &self,
+        source: (&str, &str),
+        fi: &FileInfo,
+        destination: (&str, &str),
+        permit: crate::disk::io_admission::DiskIoPermit,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<PreparedRenameData> {
+        // Capture the same permit, mount FD and listener-instance owner before
+        // quota -> metadata -> namespace -> sorted volume READ admission.
+        #[cfg(target_os = "linux")]
+        let owner: Arc<dyn Send + Sync> = Arc::new((permit, self.mount_lease.clone(), namespace_owner));
+        #[cfg(not(target_os = "linux"))]
+        let owner: Arc<dyn Send + Sync> = Arc::new((permit, namespace_owner));
+        let prepared = self
+            .prepare_rename_data_admission(fi.clone(), source, destination, Some(source.0), Some(owner))
+            .await?;
+        for volume in [Some(source.0), (source.0 != destination.0).then_some(destination.0)]
+            .into_iter()
+            .flatten()
+        {
+            if !skip_access_checks(volume) {
+                let path = self.io_get_bucket_path(volume)?;
+                let metadata = fs::symlink_metadata(path)
+                    .await
+                    .map_err(crate::disk::error_conv::to_volume_error)?;
+                if !metadata.is_dir() {
+                    return Err(DiskError::VolumeNotFound);
+                }
+            }
+        }
+        Ok(prepared)
+    }
+
+    pub(in crate::disk) async fn rename_data_prepared(
+        &self,
+        source: (&str, &str),
+        destination: (&str, &str),
+        prepared: PreparedRenameData,
+    ) -> Result<RenameDataResp> {
+        let PreparedRenameData {
+            file_info,
+            mutation_lease,
+        } = prepared;
+        let mut state = RenameDataState {
+            prepared: Some(mutation_lease),
+            ..Default::default()
+        };
+        self.rename_data_inner(source.0, source.1, file_info, destination.0, destination.1, &mut state)
+            .await
+    }
+
+    #[tracing::instrument(name = "rename_data", target = "rustfs_ecstore::disk::local", level = "trace", skip_all)]
+    pub(super) async fn rename_data_inner(
+        &self,
+        src_volume: &str,
+        src_path: &str,
+        fi: FileInfo,
+        dst_volume: &str,
+        dst_path: &str,
+        state: &mut RenameDataState,
+    ) -> Result<RenameDataResp> {
+        crate::hp_guard!("LocalDisk::rename_data");
+        #[cfg(feature = "e2e-test-hooks")]
+        if fi.is_healing() {
+            wait_for_heal_commit_test_barrier(&self.root, dst_volume, dst_path).await?;
+        }
+        let PreparedRenameData {
+            file_info: fi,
+            mutation_lease,
+        } = if let Some(mutation_lease) = state.prepared.take() {
+            PreparedRenameData {
+                file_info: fi,
+                mutation_lease,
+            }
+        } else {
+            self.prepare_rename_data_admission(
+                fi,
+                (src_volume, src_path),
+                (dst_volume, dst_path),
+                None,
+                state.namespace_owner.take(),
+            )
+            .await?
+        };
+        let no_inline = fi.data.is_none() && fi.size > 0;
+        let fi_healing = fi.is_healing();
        // Snapshot the destination part paths before `fi` is consumed below. These
        // are the descriptors a reader may hold for the version this call is about
        // to replace (backlog#1145); readers build the identical string in
@@ -610,6 +620,7 @@ impl LocalDisk {
            return Err(to_access_error(e, DiskError::VolumeAccessDenied).into());
        }

+        let dst_volume_dir = self.io_get_bucket_path(dst_volume)?;
        if !skip_access_checks(dst_volume)
            && let Err(e) = super::super::fs::access_std(&dst_volume_dir)
        {
@@ -627,19 +638,15 @@ impl LocalDisk {
            return Err(to_access_error(e, DiskError::VolumeAccessDenied).into());
        }

-        // Native publication consumes its canonical head. The legacy path
-        // keeps main's independent recovery authority and staging filename.
-        let preserve_upload_metadata =
-            multipart_publication.is_none() && src_volume == super::super::RUSTFS_META_MULTIPART_BUCKET;
+        // Keep recovery authority separate from active upload metadata so a
+        // committed upload cannot reopen when set-level cleanup fails.
+        let preserve_upload_metadata = src_volume == super::super::RUSTFS_META_MULTIPART_BUCKET;
        let source_metadata_name = if preserve_upload_metadata {
            super::super::MULTIPART_COMMIT_METADATA_FILE
        } else {
            STORAGE_FORMAT_FILE
        };
-        let src_file_path = match multipart_publication.as_ref() {
-            Some(publication) => publication.canonical_head(),
-            None => self.io_get_object_path(src_volume, format!("{src_path}/{source_metadata_name}").as_str())?,
-        };
+        let src_file_path = self.io_get_object_path(src_volume, format!("{src_path}/{source_metadata_name}").as_str())?;
        let dst_file_path = self.io_get_object_open_path(dst_volume, format!("{}/{}", dst_path, STORAGE_FORMAT_FILE).as_str())?;

        // data_dir path (only used by the non-inline commit branch)
@@ -665,22 +672,6 @@ impl LocalDisk {
            None
        };

-        if multipart_publication.is_none()
-            && let Some((source_directory, target_directory)) = has_data_dir_path.as_ref()
-        {
-            // Reject imported provenance before any DD purge or publication.
-            // Same-disk heal copies only an already verified local anchor.
-            self.retain_owned_multipart_anchor(
-                &fi,
-                dst_volume,
-                dst_path,
-                source_directory,
-                target_directory,
-                mutation_lease.clone(),
-            )
-            .await?;
-        }
-
        check_path_length(src_file_path.to_string_lossy().to_string().as_str())?;
        check_path_length(dst_file_path.to_string_lossy().to_string().as_str())?;

@@ -700,10 +691,8 @@ impl LocalDisk {
            .ok_or_else(|| DiskError::other("missing object metadata parent"))?;
        // Acquire the common trees before reading destination metadata. On
        // Windows this pins the object directory identity across publication.
-        // Multipart authority already created its source tree. Recreating it
-        // here would resurrect staging retired before a delayed request arrived.
        let (rename_commit_guard, has_dst_buf) = prepare_rename_commit_and_destination_metadata(
-            !no_inline && !preserve_upload_metadata,
+            !no_inline,
            src_file_parent,
            dst_file_parent,
            &dst_file_path,
@@ -724,10 +713,10 @@ impl LocalDisk {

        if preserve_upload_metadata {
            let source_object_path = self.get_object_path(src_volume, src_path)?;
-            let authority_owner: Arc<dyn Send + Sync> = if source_object_path == root_destination_object_path {
+            let authority_owner: Arc<dyn Send + Sync> = if source_object_path == self.get_object_path(dst_volume, dst_path)? {
                commit.mutation_lease.clone()
            } else {
-                os::acquire_metadata_mutation_lease(&source_object_path, Some(commit.mutation_lease.clone())).await
+                os::try_acquire_metadata_mutation_lease_with_owner(&source_object_path, commit.mutation_lease.clone())?
            };
            let authority = self.io_get_object_path(src_volume, &format!("{src_path}/{STORAGE_FORMAT_FILE}"))?;
            let recovery = self.io_get_object_path(
@@ -735,14 +724,10 @@ impl LocalDisk {
                &format!("{src_path}/{}/{STORAGE_FORMAT_FILE}", super::super::MULTIPART_RECOVERY_DIR),
            )?;
            check_path_length(recovery.to_string_lossy().as_ref())?;
-            os::rename_all_with_owner(
-                &authority,
-                &recovery,
-                src_file_parent,
-                commit.publication_root,
-                Some(authority_owner.clone()),
-            )
-            .await?;
+            // Both volume READs are already held. Neither source key may wait
+            // behind a competing owner that is queued behind a volume WRITE.
+            let recovery_lease = os::try_acquire_namespace_mutation_lease_with_owner(&recovery, authority_owner.clone())?;
+            os::rename_all_with_lease(&authority, &recovery, &src_volume_dir, commit.publication_root, recovery_lease).await?;
            // This is system metadata authority, so use its existing strict
            // durability policy even when the object payload is relaxed.
            if effective_durability(src_volume).syncs_commit_metadata() {
@@ -784,17 +769,13 @@ impl LocalDisk {
            let (old_current_size, old_current_source_checked, old_current_source) =
                observe_old_current(has_dst_buf.is_some(), dst_meta_unparsable, &xlmeta, dst_volume, dst_path, version_id);
            let has_old_data_dir = xlmeta.find_unshared_data_dir_for_version(Some(version_id));
-            let rollback_data_dir = if let Some(condition) = &pool_meta_condition {
-                condition.has_parent().then_some(condition.attempt_id)
-            } else {
-                has_old_data_dir.or_else(|| {
-                    if has_dst_buf.is_some() && xlmeta.find_version(Some(version_id)).is_ok() {
-                        Some(inline_metadata_rollback_dir(version_id, &xlmeta))
-                    } else {
-                        None
-                    }
-                })
-            };
+            let rollback_data_dir = has_old_data_dir.or_else(|| {
+                if has_dst_buf.is_some() && xlmeta.find_version(Some(version_id)).is_ok() {
+                    Some(inline_metadata_rollback_dir(version_id, &xlmeta))
+                } else {
+                    None
+                }
+            });
            if let Some(old_data_dir) = has_old_data_dir.as_ref() {
                let _ = xlmeta.data.remove_two(version_id, *old_data_dir);
            }
@@ -808,10 +789,7 @@ impl LocalDisk {
            // after the commit rename, and a crash before the rename means the
            // PUT was never acknowledged. A metadata commit: relaxed tiers
            // leave it to the page cache.
-            if let Some(publication) = multipart_publication.as_ref() {
-                pin_multipart_future(|| publication.prepare_metadata(&new_dst_buf, has_dst_buf.as_deref())).await?;
-            }
-            let tmp_meta_sync = if durability.syncs_commit_metadata() || multipart_publication.is_some() {
+            let tmp_meta_sync = if durability.syncs_commit_metadata() {
                SyncMode::FileOnly
            } else {
                SyncMode::None
@@ -831,9 +809,7 @@ impl LocalDisk {
            // rename below to report through the existing rollback path. Payload
            // durability is kept by both strict and relaxed.
            let tmp_meta_write = {
-                let src_file_path = multipart_publication
-                    .as_ref()
-                    .map_or_else(|| commit.source_metadata.to_path_buf(), |publication| publication.prepared_path.clone());
+                let src_file_path = commit.source_metadata.to_path_buf();
                let dst_file_path = dst_file_path.clone();
                let owned_directory_guard = commit.directory_guard.clone();
                let owned_mutation_lease = commit.mutation_lease.clone();
@@ -870,10 +846,6 @@ impl LocalDisk {
            // sequential version did.
            let prepared_metadata_source = tmp_meta_res?;
            shard_sync_res?;
-            let prepared_metadata_source = match multipart_publication.as_ref() {
-                Some(publication) => pin_multipart_future(|| publication.install_head(prepared_metadata_source)).await?,
-                None => prepared_metadata_source,
-            };
            commit.directory_guard = remove_dst_base_before_commit(
                dst_path,
                commit.directory_guard,
@@ -912,49 +884,30 @@ impl LocalDisk {
                    "Healing commit could not purge the stale destination data dir"
                );
            }
-            if let Some((src_data_path, dst_data_path)) = has_data_dir_path.as_ref() {
-                #[cfg(target_os = "linux")]
-                let payload_guard = if multipart_publication.is_some() {
-                    Some(
-                        os::multipart_payload_commit_guard(
-                            &commit.directory_guard,
-                            src_data_path.parent().ok_or(DiskError::InvalidPath)?,
-                            commit.mutation_lease.clone(),
-                        )
-                        .await
-                        .map_err(to_file_error)?,
-                    )
-                } else {
-                    None
-                };
-                #[cfg(target_os = "linux")]
-                let directory_guard = payload_guard.as_ref().unwrap_or(&commit.directory_guard);
-                #[cfg(not(target_os = "linux"))]
-                let directory_guard = &commit.directory_guard;
-                if let Err(err) = os::rename_all_with_commit_guard(
+            if let Some((src_data_path, dst_data_path)) = has_data_dir_path.as_ref()
+                && let Err(err) = os::rename_all_with_commit_guard(
                    src_data_path,
                    dst_data_path,
                    &skip_parent,
                    commit.publication_root,
-                    directory_guard,
+                    &commit.directory_guard,
                    commit.mutation_lease.clone(),
                )
                .await
-                {
-                    info!(
-                        target: "rustfs_ecstore::disk::local",
-                        event = EVENT_DISK_LOCAL_RENAME_REJECTED,
-                        component = LOG_COMPONENT_ECSTORE,
-                        subsystem = LOG_SUBSYSTEM_DISK_LOCAL,
-                        reason = "rename_all_data_path_failed",
-                        src_path = ?src_data_path,
-                        dst_path = ?dst_data_path,
-                        error = ?err,
-                        "Disk local rename flow failed"
-                    );
-                    commit.restore_published_data_source().await?;
-                    return Err(err);
-                }
+            {
+                info!(
+                    target: "rustfs_ecstore::disk::local",
+                    event = EVENT_DISK_LOCAL_RENAME_REJECTED,
+                    component = LOG_COMPONENT_ECSTORE,
+                    subsystem = LOG_SUBSYSTEM_DISK_LOCAL,
+                    reason = "rename_all_data_path_failed",
+                    src_path = ?src_data_path,
+                    dst_path = ?dst_data_path,
+                    error = ?err,
+                    "Disk local rename flow failed"
+                );
+                commit.restore_published_data_source().await?;
+                return Err(err);
            }
            #[cfg(test)]
            if has_data_dir_path.is_some() {
@@ -992,12 +945,10 @@ impl LocalDisk {
            } else {
                SyncMode::None
            };
-            if let (Some(old_data_dir), Some(dst_buf)) = (rollback_data_dir, has_dst_buf.as_ref())
-                && multipart_publication.as_ref().is_none_or(|publication| publication.legacy)
-            {
+            if let (Some(old_data_dir), Some(dst_buf)) = (rollback_data_dir, has_dst_buf.as_ref()) {
                let backup_parent = dst_file_parent.join(old_data_dir.to_string());
                #[cfg(not(windows))]
-                if let Err(err) = os::make_dir_all(&backup_parent, &skip_parent).await {
+                if let Err(err) = os::make_dir_all_with_owner(&backup_parent, &skip_parent, commit.mutation_lease.clone()).await {
                    commit.restore_published_data_source().await?;
                    return Err(err);
                }
@@ -1086,11 +1037,7 @@ impl LocalDisk {
                return Err(err);
            }
            if should_fail_after_metadata_commit(dst_path) {
-                if let Some(publication) = multipart_publication.as_ref() {
-                    pin_multipart_future(|| publication.restore_target_after_error(commit.mutation_lease.clone())).await?;
-                } else {
-                    commit.rollback_non_inline_std(rollback_data_dir).map_err(to_file_error)?;
-                }
+                commit.rollback_non_inline_std(rollback_data_dir).map_err(to_file_error)?;
                return Err(DiskError::Unexpected);
            }

@@ -1117,11 +1064,7 @@ impl LocalDisk {
                        rustfs_io_metrics::PUT_STAGE_SET_DISK_RENAME_DST_DIR_FSYNC,
                        fsync_started,
                    );
-                    if let Some(publication) = multipart_publication.as_ref() {
-                        pin_multipart_future(|| publication.restore_target_after_error(commit.mutation_lease.clone())).await?;
-                    } else {
-                        commit.rollback_non_inline_std(rollback_data_dir).map_err(to_file_error)?;
-                    }
+                    commit.rollback_non_inline_std(rollback_data_dir).map_err(to_file_error)?;
                    // The commit rename changed the dst part inodes before this fsync
                    // failed and rolled them back; drop any fd cached during that
                    // window so readers re-open the restored inode (rustfs/backlog#1177).
@@ -1158,12 +1101,7 @@ impl LocalDisk {
                            rustfs_io_metrics::PUT_STAGE_SET_DISK_RENAME_ANCESTOR_DIR_FSYNC,
                            fsync_started,
                        );
-                        if let Some(publication) = multipart_publication.as_ref() {
-                            pin_multipart_future(|| publication.restore_target_after_error(commit.mutation_lease.clone()))
-                                .await?;
-                        } else {
-                            commit.rollback_non_inline_std(rollback_data_dir).map_err(to_file_error)?;
-                        }
+                        commit.rollback_non_inline_std(rollback_data_dir).map_err(to_file_error)?;
                        // Same post-commit rollback window as above — drop cached
                        // dst part fds so readers re-open the restored inode
                        // (rustfs/backlog#1177).
@@ -1189,10 +1127,7 @@ impl LocalDisk {
            #[cfg(windows)]
            drop(commit.directory_guard);

-            if multipart_publication.is_none()
-                && !preserve_upload_metadata
-                && let Some(parent) = src_file_path.parent()
-            {
+            if !preserve_upload_metadata && let Some(parent) = src_file_path.parent() {
                let _ = std::fs::remove_dir(parent);
            }

@@ -1211,24 +1146,9 @@ impl LocalDisk {
                self.io_backend.invalidate_cached_fd(dst_volume, part_path).await;
            }

-            let multipart_source = match multipart_publication.as_ref() {
-                Some(publication) => match pin_multipart_future(|| publication.finish(commit.mutation_lease.clone())).await {
-                    Ok(result) => Some(Box::new(result)),
-                    Err(error) => {
-                        pin_multipart_future(|| publication.restore_target_after_error(commit.mutation_lease.clone())).await?;
-                        return Err(error);
-                    }
-                },
-                None => None,
-            };
            Ok(RenameDataResp {
-                multipart_source,
                old_data_dir: has_old_data_dir,
-                rollback_data_dir: if multipart_publication.as_ref().is_some_and(|publication| !publication.legacy) {
-                    None
-                } else {
-                    rollback_data_dir
-                },
+                rollback_data_dir,
                cleanup_data_dir: has_old_data_dir,
                sign: version_signature,
                old_current_size,
@@ -1246,42 +1166,14 @@ impl LocalDisk {
            let dst_path_for_source = dst_path.to_string();
            let dst_volume_dir_for_commit = dst_volume_dir.clone();
            let publication_root_for_commit = self.publication_root.clone();
-            let cleanup_src_parent = multipart_publication.is_none() && !preserve_upload_metadata;
+            let cleanup_src_parent = !preserve_upload_metadata;
            #[cfg(windows)]
            let source_parent = src_file_parent.to_path_buf();
            let rename_commit_guard_for_preparation = commit.directory_guard.clone();
            let sync = durability.syncs_commit_metadata();
-            #[cfg(unix)]
-            let receipt_identity = if sync
-                && pool_meta_condition
-                    .as_ref()
-                    .is_some_and(|condition| condition.parent_raw_sha256.is_none())
-            {
-                Some(super::pool_meta_native::PoolMetaNativeFileIdentity::from_file_info(&fi)?)
-            } else {
-                None
-            };
-            #[cfg(unix)]
-            let owned_backup_path = pool_meta_condition
-                .as_ref()
-                .filter(|condition| condition.has_parent())
-                .map(|condition| {
-                    destination_object_path
-                        .join(condition.attempt_id.to_string())
-                        .join(STORAGE_FORMAT_FILE_BACKUP)
-                });
-            #[cfg(unix)]
-            if let Some(backup) = &owned_backup_path {
-                let parent = backup
-                    .parent()
-                    .ok_or_else(|| DiskError::other("missing owned backup parent"))?;
-                commit.mutation_lease =
-                    os::acquire_namespace_mutation_lease_with_owner(parent, Some(commit.mutation_lease.clone())).await;
-            }
            #[cfg(test)]
            run_inline_before_file_sync_admission(dst_path);
            let mut file_sync_admission = if sync {
-                let _admission = os::StageTimer::new(native_timing, "pool_meta_native_file_sync_admission");
                Some(
                    os::acquire_file_sync_admission(self.file_sync_permits.clone())
                        .await
@@ -1291,10 +1183,7 @@ impl LocalDisk {
            } else {
                None
            };
-            let preparation_dispatch = os::StageTimer::new(native_timing, "pool_meta_native_prepare_dispatch_wait");
            let prepare_inline_metadata = move |is_cancelled: &dyn Fn() -> bool| {
-                drop(preparation_dispatch);
-                let _preparation = os::StageTimer::new(native_timing, "pool_meta_native_prepare_execute");
                let mut prepared_metadata_source =
                    os::create_prepared_rename_source_with_commit_guard(&src, &dst, &rename_commit_guard_for_preparation)?;
                #[cfg(windows)]
@@ -1328,9 +1217,7 @@ impl LocalDisk {
                // Healing commits never run set-level post-return rollback; keep
                // their intra-commit rollback backup in the staging directory so
                // `<object>/<rollback_data_dir>/xl.meta.bkp` is never stranded.
-                let rollback_data_dir = if let Some(condition) = &pool_meta_condition {
-                    condition.has_parent().then_some(condition.attempt_id)
-                } else if fi_healing {
+                let rollback_data_dir = if fi_healing {
                    None
                } else {
                    old_data_dir.or_else(|| {
@@ -1353,61 +1240,13 @@ impl LocalDisk {
                // relaxed tiers do no per-object fsync here at all (aligned
                // with MinIO's default), trading a documented power-loss
                // window for latency.
-                {
-                    let _new_file = os::StageTimer::new(native_timing, "pool_meta_native_staged_write_sync");
-                    prepared_metadata_source.write_all(&new_buf, sync)?;
-                }
+                prepared_metadata_source.write_all(&new_buf, sync)?;
                run_inline_preparation_before_backup(&dst_path_for_failpoint);
-                #[cfg(unix)]
-                let mut receipt_candidate = receipt_identity.and_then(|identity| {
-                    os::DurableFileReceipt::capture(&publication_root_for_commit, &src, &new_buf)
-                        .ok()
-                        .map(|physical| super::pool_meta_native::DurableHeadReceipt { physical, identity })
-                });
-                #[cfg(not(unix))]
-                let receipt_candidate = None;
-                #[cfg(unix)]
-                let owned_backup = match (owned_backup_path.as_ref(), has_dst_buf.as_ref()) {
-                    (Some(backup_path), Some(old_metadata)) => {
-                        let backup = {
-                            let _create = os::StageTimer::new(native_timing, "pool_meta_native_backup_create");
-                            Arc::new(os::prepare_pool_meta_owned_backup(
-                                &dst,
-                                backup_path,
-                                &dst_volume_dir_for_commit,
-                                &publication_root_for_commit,
-                                old_metadata,
-                                should_fail_local_inline_rollback_hardlink(&dst),
-                            )?)
-                        };
-                        let reuses_durability = parent_receipt.as_ref().is_some_and(|receipt| {
-                            backup.can_reuse_durability(&receipt.physical, &publication_root_for_commit, old_metadata)
-                        });
-                        if !backup.is_linked() {
-                            receipt_candidate = None;
-                        }
-                        if sync && !reuses_durability {
-                            let _backup_sync = os::StageTimer::new(native_timing, "pool_meta_native_backup_file_sync");
-                            backup.sync_data()?;
-                        } else if sync {
-                            rustfs_io_metrics::record_put_object_stage_count("pool_meta_native_backup_sync_reused", 1);
-                        }
-                        Some(backup)
-                    }
-                    (Some(_), None) => {
-                        return Err(std::io::Error::new(ErrorKind::InvalidData, "pool metadata predecessor disappeared"));
-                    }
-                    (None, _) => None,
-                };
-                #[cfg(not(unix))]
-                let owned_backup = None;
                if let Some(ref old_metadata) = has_dst_buf
-                    && owned_backup.is_none()
                    && (rollback_data_dir.is_some() || fi_healing || sync || cfg!(test))
                {
                    #[cfg(windows)]
                    let backup_path = {
-                        let _backup = os::StageTimer::new(native_timing, "pool_meta_native_backup_create_sync");
                        let backup_path = src
                            .parent()
                            .ok_or_else(|| std::io::Error::new(ErrorKind::InvalidInput, "missing staging metadata parent"))?
@@ -1416,13 +1255,9 @@ impl LocalDisk {
                        backup_path
                    };
                    #[cfg(not(windows))]
-                    let backup_path = {
-                        let _backup = os::StageTimer::new(native_timing, "pool_meta_native_backup_create");
-                        create_local_inline_rollback_backup(&dst, &src, old_metadata)?
-                    };
+                    let backup_path = create_local_inline_rollback_backup(&dst, &src, old_metadata)?;
                    #[cfg(not(windows))]
                    if sync {
-                        let _backup_sync = os::StageTimer::new(native_timing, "pool_meta_native_backup_file_sync");
                        std::fs::File::open(&backup_path)?.sync_data()?;
                    }
                    staged_rollback_path = Some(StagedRollbackBackup(backup_path));
@@ -1481,19 +1316,15 @@ impl LocalDisk {
                        let _ = std::fs::remove_dir(parent);
                    }

-                    return Ok::<_, std::io::Error>(InlinePreparationOutcome::Committed(
-                        RenameDataResp {
-                            multipart_source: None,
-                            old_data_dir,
-                            rollback_data_dir,
-                            cleanup_data_dir: old_data_dir,
-                            sign: version_signature,
-                            old_current_size,
-                            old_current_source_checked,
-                            old_current_source,
-                        },
-                        receipt_candidate,
-                    ));
+                    return Ok::<_, std::io::Error>(InlinePreparationOutcome::Committed(RenameDataResp {
+                        old_data_dir,
+                        rollback_data_dir,
+                        cleanup_data_dir: old_data_dir,
+                        sign: version_signature,
+                        old_current_size,
+                        old_current_source_checked,
+                        old_current_source,
+                    }));
                }

                Ok::<_, std::io::Error>(InlinePreparationOutcome::Prepared((
@@ -1506,11 +1337,8 @@ impl LocalDisk {
                    staged_rollback_path,
                    destination_was_absent,
                    prepared_metadata_source,
-                    owned_backup,
-                    receipt_candidate,
                )))
            };
-            let preparation_total = os::StageTimer::new(native_timing, "pool_meta_native_prepare_total");
            let inline_preparation = if let Some(admission) = file_sync_admission.as_ref() {
                os::run_cancellable_blocking_namespace_file_sync_operation(
                    commit.mutation_lease.clone(),
@@ -1523,7 +1351,6 @@ impl LocalDisk {
            }
            .map_err(to_file_error)
            .map_err(DiskError::from);
-            drop(preparation_total);
            let (
                rollback_data_dir,
                cleanup_data_dir,
@@ -1534,16 +1361,9 @@ impl LocalDisk {
                mut local_rollback_path,
                destination_was_absent,
                prepared_metadata_source,
-                owned_backup,
-                receipt_candidate,
            ) = match inline_preparation {
-                Ok(InlinePreparationOutcome::Committed(resp, receipt_candidate)) => {
+                Ok(InlinePreparationOutcome::Committed(resp)) => {
                    drop(file_sync_admission.take());
-                    #[cfg(unix)]
-                    self.publish_pool_meta_durable_head(receipt_candidate, dst_file_path.clone(), commit.mutation_lease.clone())
-                        .await;
-                    #[cfg(not(unix))]
-                    let _ = receipt_candidate;
                    #[cfg(windows)]
                    drop(commit.directory_guard);
                    #[cfg(windows)]
@@ -1553,10 +1373,6 @@ impl LocalDisk {
                    for part_path in &invalidate_part_paths {
                        self.io_backend.invalidate_cached_fd(dst_volume, part_path).await;
                    }
-                    #[cfg(unix)]
-                    if let Some(receipt_mutation) = receipt_mutation.as_mut() {
-                        receipt_mutation.complete();
-                    }
                    return Ok(resp);
                }
                Ok(InlinePreparationOutcome::CommitErr(err)) | Err(err) => {
@@ -1590,42 +1406,6 @@ impl LocalDisk {
                return Err(DiskError::FileNotFound);
            }

-            #[cfg(unix)]
-            if let Some(backup) = &owned_backup {
-                // The backup namespace lease owns the head transaction; retain
-                // its directory and inode guards in every later detached job.
-                commit.mutation_lease.attach_external_guard(backup.clone());
-                #[cfg(test)]
-                run_rename_data_after_first_publication(&self.root, dst_volume, dst_path);
-                let backup_base = dst_volume_dir.clone();
-                let backup_root = commit.publication_root.clone();
-                if let Some(admission) = file_sync_admission.as_ref() {
-                    let _backup_dir = os::StageTimer::new(native_timing, "pool_meta_native_backup_dir_sync");
-                    let fsync_started = rustfs_io_metrics::put_stage_timer();
-                    let backup = backup.clone();
-                    let result =
-                        os::run_blocking_namespace_file_sync_operation(commit.mutation_lease.clone(), admission, move || {
-                            backup.verify_paths(&backup_base, &backup_root)?;
-                            backup.sync_directory()
-                        })
-                        .await;
-                    rustfs_io_metrics::record_put_object_stage_duration_from(
-                        rustfs_io_metrics::PUT_STAGE_SET_DISK_RENAME_BACKUP_DIR_FSYNC,
-                        fsync_started,
-                    );
-                    result.map_err(to_file_error)?;
-                } else {
-                    let backup = backup.clone();
-                    os::run_blocking_namespace_operation(commit.mutation_lease.clone(), move || {
-                        backup.verify_paths(&backup_base, &backup_root)
-                    })
-                    .await
-                    .map_err(to_file_error)?;
-                }
-            }
-            #[cfg(not(unix))]
-            let _ = owned_backup;
-
            if let (Some(rollback_data_dir), Some(staged_backup)) =
                (rollback_data_dir, local_rollback_path.as_ref().map(StagedRollbackBackup::path))
            {
@@ -1635,19 +1415,24 @@ impl LocalDisk {
                let backup_path = dst_parent
                    .join(rollback_data_dir.to_string())
                    .join(STORAGE_FORMAT_FILE_BACKUP);
-                // rename_all acquires the backup path's namespace lease. Do not
-                // hold a disk admission while acquiring another namespace lock.
+                // Keep backup mutations serialized, but never wait for a second
+                // namespace while holding the volume READ: its owner can be
+                // queued behind a volume DELETE that is waiting for this commit.
                drop(file_sync_admission.take());
-                let backup_publish = os::StageTimer::new(native_timing, "pool_meta_native_backup_publish");
-                let backup_result = os::rename_all_with_owner(
-                    staged_backup,
-                    &backup_path,
-                    &dst_volume_dir,
-                    commit.publication_root,
-                    Some(commit.mutation_lease.clone()),
-                )
-                .await;
-                drop(backup_publish);
+                let backup_result =
+                    match os::try_acquire_namespace_mutation_lease_with_owner(&backup_path, commit.mutation_lease.clone()) {
+                        Ok(lease) => {
+                            os::rename_all_with_lease(
+                                staged_backup,
+                                &backup_path,
+                                &dst_volume_dir,
+                                commit.publication_root,
+                                lease,
+                            )
+                            .await
+                        }
+                        Err(err) => Err(err),
+                    };
                if let Err(err) = backup_result {
                    let _ = remove_file_if_exists(staged_backup);
                    return Err(err);
@@ -1655,7 +1440,6 @@ impl LocalDisk {
                #[cfg(test)]
                run_rename_data_after_first_publication(&self.root, dst_volume, dst_path);
                if sync {
-                    let _admission = os::StageTimer::new(native_timing, "pool_meta_native_file_sync_readmission");
                    file_sync_admission = Some(
                        os::acquire_file_sync_admission(self.file_sync_permits.clone())
                            .await
@@ -1666,7 +1450,6 @@ impl LocalDisk {
                if let Some(admission) = file_sync_admission.as_ref()
                    && let Some(backup_parent) = backup_path.parent()
                {
-                    let _backup_dir = os::StageTimer::new(native_timing, "pool_meta_native_backup_dir_sync");
                    let fsync_started = rustfs_io_metrics::put_stage_timer();
                    if let Err(err) =
                        os::fsync_dir_with_namespace_file_sync_limit(backup_parent, commit.mutation_lease.clone(), admission)
@@ -1686,7 +1469,6 @@ impl LocalDisk {
                local_rollback_path = None;
            }

-            let head_publish = os::StageTimer::new(native_timing, "pool_meta_native_head_publish");
            let commit_result = if should_fail_commit_rename(dst_path) {
                Err(DiskError::other("test fail during metadata commit rename"))
            } else {
@@ -1701,7 +1483,6 @@ impl LocalDisk {
                )
                .await
            };
-            drop(head_publish);
            if let Err(err) = commit_result {
                if let Some(backup_path) = local_rollback_path.as_ref().map(StagedRollbackBackup::path) {
                    let _ = remove_file_if_exists(backup_path);
@@ -1722,7 +1503,6 @@ impl LocalDisk {
                if let Some(admission) = file_sync_admission.as_ref()
                    && let Some(dst_parent) = dst_file_path.parent()
                {
-                    let _head_dir = os::StageTimer::new(native_timing, "pool_meta_native_head_dir_sync");
                    let fsync_started = rustfs_io_metrics::put_stage_timer();
                    if let Err(err) = os::fsync_commit_directory(
                        dst_parent,
@@ -1803,12 +1583,6 @@ impl LocalDisk {
                return Err(DiskError::from(err));
            }

-            #[cfg(unix)]
-            self.publish_pool_meta_durable_head(receipt_candidate, dst_file_path.clone(), commit.mutation_lease.clone())
-                .await;
-            #[cfg(not(unix))]
-            let _ = receipt_candidate;
-
            // The commit no longer has a rollback path. Release the Windows
            // object identity guard before best-effort staging cleanup.
            #[cfg(windows)]
@@ -1838,12 +1612,7 @@ impl LocalDisk {
                self.io_backend.invalidate_cached_fd(dst_volume, part_path).await;
            }

-            #[cfg(unix)]
-            if let Some(receipt_mutation) = receipt_mutation.as_mut() {
-                receipt_mutation.complete();
-            }
            Ok(RenameDataResp {
-                multipart_source: None,
                old_data_dir: cleanup_data_dir,
                rollback_data_dir,
                cleanup_data_dir,
@@ -1,93 +0,0 @@
-// Copyright 2026 RustFS Team
-// SPDX-License-Identifier: Apache-2.0
-
-use super::*;
-use crate::disk::endpoint::Endpoint;
-use futures::FutureExt;
-
-#[inline(never)]
-fn heap_scope<F: std::future::Future>(build: impl FnOnce() -> F) -> std::pin::Pin<Box<F>> {
-    Box::pin(build())
-}
-
-#[tokio::test]
-async fn generic_delete_recovery_cannot_restore_or_prepare_any_physical_multipart_scope() {
-    let temporary = tempfile::tempdir().expect("recovery scope disk");
-    let endpoint = Endpoint::try_from(temporary.path().to_string_lossy().as_ref()).expect("local endpoint");
-    let disk = heap_scope(|| LocalDisk::new(&endpoint, false)).await.expect("local disk");
-    let hash = "a".repeat(64);
-    let upload = Uuid::new_v4().to_string();
-    let object = format!("{hash}/{upload}");
-    let source = disk
-        .io_get_object_path(RUSTFS_META_MULTIPART_BUCKET, &object)
-        .expect("actual source root");
-    std::fs::create_dir_all(&source).expect("existing source root");
-    // Scope rejection precedes any attempt to interpret or replace these bytes.
-    let head = source.join(STORAGE_FORMAT_FILE);
-    std::fs::write(&head, b"existing source head must not be read or replaced").expect("existing head bytes");
-    let original = std::fs::read(&head).expect("original physical bytes");
-    let logical = disk
-        .get_object_path(RUSTFS_META_MULTIPART_BUCKET, &object)
-        .expect("configured metadata key");
-    let owner: Option<Arc<dyn Send + Sync>> = Some(os::acquire_metadata_mutation_lease(&logical, None).await);
-    let transaction = Uuid::new_v4();
-    let aliases = [
-        (RUSTFS_META_MULTIPART_BUCKET.to_owned(), object.clone()),
-        (format!("{RUSTFS_META_MULTIPART_BUCKET}/."), object.clone()),
-        (format!("{RUSTFS_META_MULTIPART_BUCKET}/{hash}"), upload),
-        (crate::disk::RUSTFS_META_BUCKET.to_owned(), format!("multipart/{object}")),
-    ];
-    for (volume, object) in aliases {
-        let result = heap_scope(|| {
-            disk.delete_recovery_settle(&volume, &object, transaction, [0; 32], DeleteRecoveryAction::Rollback, owner.clone())
-        })
-        .now_or_never()
-        .expect("scope is rejected before metadata lock acquisition");
-        assert_eq!(
-            result.expect_err("generic recovery cannot mutate MPI"),
-            DiskError::ConditionalDeleteConflict
-        );
-        let result = heap_scope(|| {
-            disk.delete_recovery_settle_owned(
-                &volume,
-                &object,
-                transaction,
-                [0; 32],
-                DeleteRecoveryAction::Rollback,
-                owner.clone(),
-            )
-        })
-        .now_or_never()
-        .expect("owned rollback is rejected before I/O");
-        assert_eq!(
-            result.expect_err("owned recovery cannot restore MPI head"),
-            DiskError::ConditionalDeleteConflict
-        );
-        let result = heap_scope(|| {
-            disk.prepare_delete_recovery(
-                &volume,
-                &object,
-                Some(&original),
-                &[],
-                None,
-                DeletePreparationContext {
-                    transaction,
-                    bucket_incarnation: None,
-                    namespace_owner: owner.clone(),
-                },
-            )
-        })
-        .now_or_never()
-        .expect("preparation is rejected before decoding or writing metadata");
-        assert_eq!(
-            result.expect_err("generic recovery cannot prepare MPI"),
-            DiskError::ConditionalDeleteConflict
-        );
-        assert_eq!(std::fs::read(&head).expect("source remains present"), original);
-        assert_eq!(std::fs::read_dir(&source).expect("source inventory").count(), 1);
-    }
-    assert!(
-        disk.reject_multipart_delete_recovery_mutation("ordinary-user-bucket", "object")
-            .is_ok()
-    );
-}
@@ -1,350 +0,0 @@
-use super::*;
-use crate::disk::SnapshotLeaseToken;
-
-async fn deferred_owned_undo() -> (Fixture, PublicationIdentity, SnapshotLeaseToken) {
-    let fixture = Fixture::new().await;
-    let result = fixture
-        .publish_zero_on(&[0])
-        .await
-        .pop()
-        .expect("real first-key native publication")
-        .1;
-    let publication = result.publication.clone();
-    let path = format!("object/{}", publication.final_data_dir);
-    let token = fixture.disks[0]
-        .acquire_snapshot_lease("bucket", &path)
-        .await
-        .expect("retain the actual published DD");
-    fixture.disks[0]
-        .recover_multipart_source_native(fixture.request(MultipartSourceOperation::UndoAndClaim {
-            expected: Box::new(result.proof.snapshot),
-            publication: publication.clone(),
-            capability: result.undo_capability,
-            round: Fixture::round_for(&publication),
-        }))
-        .await
-        .expect("owned Undo restores absence and defers only its exact DD");
-    assert!(!fixture.disks[0].root.join("bucket/object/xl.meta").exists());
-    (fixture, publication, token)
-}
-
-#[tokio::test]
-async fn native_multipart_owned_undo_deferred_reclaim_rechecks_successors_references_and_ownership() {
-    for changed in [
-        "successor",
-        "referenced",
-        "child",
-        "foreign-anchor",
-        "missing-anchor",
-        "unknown-file",
-    ] {
-        let (fixture, publication, token) = Box::pin(deferred_owned_undo()).await;
-        let disk = &fixture.disks[0];
-        let path = format!("object/{}", publication.final_data_dir);
-        let data = disk.io_get_object_path("bucket", &path).expect("actual failed DD");
-        let part = std::fs::read(data.join("part.1")).expect("real selected shard before deferred callback");
-        let sidecar = std::fs::read(data.join("part.1.meta")).expect("real selected generation before callback");
-        let mut successor = None;
-        let mut child = None;
-        match changed {
-            "successor" | "referenced" => {
-                let referenced = (changed == "referenced").then_some(publication.final_data_dir);
-                let info = super::super::super::test::test_file_info(
-                    "object",
-                    Uuid::new_v4(),
-                    referenced,
-                    Some(bytes::Bytes::from_static(b"newer PUT body")),
-                );
-                disk.rename_data(RUSTFS_META_TMP_BUCKET, "real-newer-put", info, "bucket", "object")
-                    .await
-                    .expect("real ordinary PUT while old failed DD is snapshot-protected");
-                let raw = std::fs::read(disk.io_get_object_path("bucket", "object/xl.meta").expect("target FI"))
-                    .expect("actual successor FI");
-                let refs = FileMeta::load(&raw)
-                    .expect("successor metadata")
-                    .get_data_dirs()
-                    .expect("all successor versions");
-                assert_eq!(refs.contains(&Some(publication.final_data_dir)), changed == "referenced");
-                successor = Some(raw);
-            }
-            "child" => {
-                let child_path = format!("{path}/child");
-                let info = super::super::super::test::test_file_info(
-                    "child",
-                    Uuid::nil(),
-                    None,
-                    Some(bytes::Bytes::from_static(b"child PUT body")),
-                );
-                disk.rename_data(RUSTFS_META_TMP_BUCKET, "real-child-put", info, "bucket", &child_path)
-                    .await
-                    .expect("real child PUT under the UUID-shaped S3 prefix");
-                child = Some(std::fs::read(data.join("child/xl.meta")).expect("actual child metadata"));
-            }
-            "foreign-anchor" => {
-                let mut anchor: UntrustedAnchorBlob =
-                    rmp_serde::from_slice(&std::fs::read(data.join(".mpu-source-retirement")).unwrap()).unwrap();
-                anchor.disk_id = Uuid::new_v4();
-                std::fs::write(data.join(".mpu-source-retirement"), rmp_serde::to_vec_named(&anchor).unwrap()).unwrap();
-            }
-            "missing-anchor" => {
-                std::fs::remove_file(data.join(".mpu-source-retirement")).unwrap();
-            }
-            "unknown-file" => {
-                std::fs::write(data.join("unknown"), b"protected").unwrap();
-            }
-            _ => unreachable!(),
-        }
-        let anchor = std::fs::read(data.join(".mpu-source-retirement")).ok();
-        let reclaimed = disk.release_snapshot_lease("bucket", &path, token).await;
-        if changed == "successor" {
-            reclaimed.expect("unreferenced owned failed DD is reclaimable beside a newer real PUT");
-            assert!(!data.exists());
-        } else {
-            assert!(reclaimed.is_err(), "{changed} must reject the actual callback before deleting payload");
-            assert_eq!(std::fs::read(data.join("part.1")).expect("protected actual shard"), part);
-            assert_eq!(std::fs::read(data.join("part.1.meta")).expect("protected actual sidecar"), sidecar);
-            assert_eq!(std::fs::read(data.join(".mpu-source-retirement")).ok(), anchor);
-        }
-        if let Some(raw) = successor {
-            assert_eq!(std::fs::read(disk.io_get_object_path("bucket", "object/xl.meta").unwrap()).unwrap(), raw);
-        }
-        if let Some(raw) = child {
-            assert_eq!(std::fs::read(data.join("child/xl.meta")).unwrap(), raw);
-        }
-        if changed == "unknown-file" {
-            assert_eq!(std::fs::read(data.join("unknown")).unwrap(), b"protected");
-        }
-    }
-}
-
-#[cfg(not(windows))]
-#[tokio::test]
-async fn native_multipart_owned_undo_reclaim_keeps_anchor_until_payload_barrier_and_retries_empty_dd() {
-    use crate::disk::os::prepared_publication_test_hooks as hooks;
-    for after_anchor in [false, true] {
-        let (fixture, publication, token) = Box::pin(deferred_owned_undo()).await;
-        let disk = &fixture.disks[0];
-        let path = format!("object/{}", publication.final_data_dir);
-        let data = disk.io_get_object_path("bucket", &path).expect("actual DD barrier path");
-        let anchor_path = data.join(".mpu-source-retirement");
-        let anchor = std::fs::read(&anchor_path).expect("actual owner anchor");
-        let _hook = if after_anchor {
-            let directory = data.clone();
-            Some(hooks::install_at(hooks::Stage::Remove, &anchor_path, move || {
-                os::fsync_dir_recorder::set_failure(&directory, std::io::ErrorKind::Other);
-            }))
-        } else {
-            os::fsync_dir_recorder::set_failure(&data, std::io::ErrorKind::Other);
-            None
-        };
-        assert!(disk.release_snapshot_lease("bucket", &path, token).await.is_err());
-        assert!(
-            os::fsync_dir_recorder::take_failure(&data).is_none(),
-            "the real selected DD barrier must fail"
-        );
-        assert!(!data.join("part.1").exists() && !data.join("part.1.meta").exists());
-        if after_anchor {
-            assert!(
-                std::fs::read_dir(&data).unwrap().next().is_none(),
-                "only an empty DD remains after the final anchor unlink"
-            );
-        } else {
-            assert_eq!(std::fs::read(&anchor_path).expect("failed payload barrier retains authority"), anchor);
-        }
-        let retry = disk
-            .acquire_snapshot_lease("bucket", &path)
-            .await
-            .expect("finished failed callback releases deleting");
-        disk.release_snapshot_lease("bucket", &path, retry)
-            .await
-            .expect("same privately owned pending operation retries");
-        assert!(!data.exists());
-        disk.delete_volume("bucket", false)
-            .await
-            .expect("no owned native payload residue blocks empty bucket deletion");
-    }
-}
-
-#[cfg(not(windows))]
-#[tokio::test]
-async fn native_multipart_owned_undo_cancelled_snapshot_release_keeps_physical_delete_claim() {
-    use crate::disk::os::prepared_publication_test_hooks as hooks;
-    let (fixture, publication, token) = Box::pin(deferred_owned_undo()).await;
-    let disk = fixture.disks[0].clone();
-    let path = format!("object/{}", publication.final_data_dir);
-    let data = disk.io_get_object_path("bucket", &path).expect("actual callback DD");
-    let (entered, receive_entered) = std::sync::mpsc::channel();
-    let (release, receive_release) = std::sync::mpsc::channel();
-    let _hook = hooks::install_at(hooks::Stage::Remove, &data.join("part.1"), move || {
-        entered.send(()).expect("actual unlink callback entered");
-        receive_release
-            .recv_timeout(std::time::Duration::from_secs(5))
-            .expect("release physical unlink");
-    });
-    let owned_disk = disk.clone();
-    let owned_path = path.clone();
-    let caller = tokio::spawn(async move { owned_disk.release_snapshot_lease("bucket", &owned_path, token).await });
-    tokio::task::spawn_blocking(move || receive_entered.recv_timeout(std::time::Duration::from_secs(5)))
-        .await
-        .expect("hook waiter joins")
-        .expect("real unlink is blocked before cancelling its waiter");
-    caller.abort();
-    assert!(caller.await.expect_err("cancelled waiter").is_cancelled());
-    let key = super::super::super::SnapshotLeaseKey {
-        volume: "bucket".to_owned(),
-        path: path.clone(),
-    };
-    assert!(
-        disk.snapshot_leases
-            .lock()
-            .entries
-            .get(&key)
-            .is_some_and(|entry| entry.deleting),
-        "only the actual physical callback may release the deleting claim"
-    );
-    release.send(()).expect("finish actual unlink after waiter cancellation");
-    tokio::time::timeout(std::time::Duration::from_secs(5), async {
-        loop {
-            if !data.exists() && !disk.snapshot_leases.lock().entries.contains_key(&key) {
-                break;
-            }
-            tokio::task::yield_now().await;
-        }
-    })
-    .await
-    .expect("physical callback finishes and clears its owned registry claim");
-    assert!(!data.exists());
-    assert!(matches!(disk.acquire_snapshot_lease("bucket", &path).await, Err(DiskError::FileNotFound)));
-}
-
-#[tokio::test]
-async fn native_multipart_owned_undo_rpc_retries_a_failed_physical_reclaim() {
-    let fixture = Fixture::new().await;
-    let result = fixture
-        .publish_zero_on(&[0])
-        .await
-        .pop()
-        .expect("actual failed-owner publication")
-        .1;
-    let publication = result.publication.clone();
-    let round = Fixture::round_for(&publication);
-    let expected = result.proof.snapshot.clone();
-    let capability_wire = rmp_serde::to_vec_named(&result.undo_capability).expect("original opaque native cap");
-    let path = format!("object/{}", publication.final_data_dir);
-    let data = fixture.disks[0].io_get_object_path("bucket", &path).expect("actual final DD");
-    let anchor = std::fs::read(data.join(".mpu-source-retirement")).expect("real native anchor");
-    os::fsync_dir_recorder::set_failure(&data, std::io::ErrorKind::Other);
-    assert!(
-        fixture.disks[0]
-            .recover_multipart_source_native(fixture.request(MultipartSourceOperation::UndoAndClaim {
-                expected: Box::new(expected.clone()),
-                publication: publication.clone(),
-                capability: result.undo_capability,
-                round: round.clone(),
-            }))
-            .await
-            .is_err(),
-        "a real reclaim barrier failure cannot become a successful first RPC"
-    );
-    assert!(
-        os::fsync_dir_recorder::take_failure(&data).is_none(),
-        "the selected physical reclaim barrier was reached"
-    );
-    let after_failure = fixture.snapshot(0).await;
-    assert_eq!(after_failure.phase, MultipartSourcePhase::Recovering);
-    assert!(after_failure.head_sha256.is_some() && after_failure.capability_sha256.is_none());
-    assert!(!fixture.disks[0].root.join("bucket/object/xl.meta").exists());
-    assert_eq!(
-        std::fs::read(data.join(".mpu-source-retirement")).expect("failed payload barrier retains exact anchor"),
-        anchor
-    );
-    let capability = rmp_serde::from_slice(&capability_wire).expect("same opaque capability on RPC replay");
-    let response = fixture.disks[0]
-        .recover_multipart_source_native(fixture.request(MultipartSourceOperation::UndoAndClaim {
-            expected: Box::new(expected),
-            publication,
-            capability,
-            round,
-        }))
-        .await
-        .expect("same UndoAndClaim RPC resumes its qualified reclaim before returning Claimed");
-    let MultipartSourceResponse::Claimed(proof) = response else {
-        panic!("native owned RPC replay must return its durable claim");
-    };
-    assert_eq!(proof.snapshot, after_failure);
-    assert!(
-        !data.exists(),
-        "the early same-claim RPC branch must actually finish its interrupted reclaim"
-    );
-    fixture.disks[0]
-        .delete_volume("bucket", false)
-        .await
-        .expect("RPC replay leaves an actually empty bucket");
-}
-
-#[tokio::test]
-async fn native_multipart_owned_undo_pending_proof_survives_both_generic_request_orders() {
-    for ordinary_first in [false, true] {
-        let fixture = Fixture::new().await;
-        let result = fixture.publish_zero_on(&[0]).await.pop().expect("actual native producer").1;
-        let publication = result.publication.clone();
-        let path = format!("object/{}", publication.final_data_dir);
-        let disk = &fixture.disks[0];
-        let data = disk.io_get_object_path("bucket", &path).expect("actual failed native DD");
-        let token = disk
-            .acquire_snapshot_lease("bucket", &path)
-            .await
-            .expect("real snapshot protects this DD");
-        let ordinary = || DeleteOptions {
-            orphan_data_dir: true,
-            ..Default::default()
-        };
-        if ordinary_first {
-            assert_eq!(
-                disk.delete_data_dir("bucket", &path, ordinary())
-                    .await
-                    .expect("generic request parks behind actual snapshot"),
-                crate::disk::DataDirDeleteStatus::Deferred
-            );
-        }
-        disk.recover_multipart_source_native(fixture.request(MultipartSourceOperation::UndoAndClaim {
-            expected: Box::new(result.proof.snapshot),
-            publication: publication.clone(),
-            capability: result.undo_capability,
-            round: Fixture::round_for(&publication),
-        }))
-        .await
-        .expect("actual owned Undo qualifies missing-FI cleanup");
-        if !ordinary_first {
-            assert_eq!(
-                disk.delete_data_dir("bucket", &path, ordinary())
-                    .await
-                    .expect("later generic request remains deferred"),
-                crate::disk::DataDirDeleteStatus::Deferred
-            );
-        }
-        let key = super::super::super::SnapshotLeaseKey {
-            volume: "bucket".to_owned(),
-            path: path.clone(),
-        };
-        assert!(
-            matches!(
-                disk.snapshot_leases
-                    .lock()
-                    .entries
-                    .get(&key)
-                    .and_then(|entry| entry.pending_delete.as_ref()),
-                Some(super::super::super::SnapshotPendingDelete::OwnedMultipart(_))
-            ),
-            "the exact native proof cannot be lost to generic options, ordinary_first={ordinary_first}"
-        );
-        assert!(data.join(".mpu-source-retirement").exists());
-        disk.release_snapshot_lease("bucket", &path, token)
-            .await
-            .expect("release replays the qualified native owner");
-        assert!(!data.exists(), "both request orders must reclaim the owned DD after its snapshot drains");
-        disk.delete_volume("bucket", false)
-            .await
-            .expect("no generic pending request strands an owned absent-target DD");
-    }
-}
@@ -1,703 +0,0 @@
-// Copyright 2026 RustFS Team
-// SPDX-License-Identifier: Apache-2.0
-
-//! All-participant, irreversible source closure. No operation in this module undoes a target.
-use super::{
-    LocalDisk,
-    multipart_source_state::{
-        LoadedSource, SourceHead, SourceState, SourceStore, decode, encode, load_source, raw_sha, read_optional,
-    },
-};
-use crate::disk::{
-    DiskError, Error, RUSTFS_META_MULTIPART_BUCKET, RUSTFS_META_TMP_DELETED_BUCKET, Result, STORAGE_FORMAT_FILE,
-    multipart_source::*, os,
-};
-use rustfs_filemeta::FileMeta;
-use serde::{Deserialize, Serialize};
-use std::{
-    io::{self, ErrorKind},
-    path::{Path, PathBuf},
-    sync::Arc,
-};
-use uuid::Uuid;
-
-const STATE: &str = ".mpu-source-state";
-#[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub(super) struct RetiredHead {
-    pub sha256: [u8; 32],
-    pub length: u64,
-}
-#[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub(super) struct AbortCertificateRef {
-    pub round: MultipartAbortRound,
-    pub sha256: [u8; 32],
-    pub slot: u8,
-}
-#[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub(super) struct NativeAbortState {
-    pub round: MultipartAbortRound,
-    pub pending_from: MultipartSourceSnapshot,
-    pub retired_head: Option<RetiredHead>,
-    pub committed: Option<AbortCertificateRef>,
-}
-impl NativeAbortState {
-    pub fn validate(&self, state: &SourceState) -> Result<()> {
-        self.round.validate()?;
-        if state.phase != MultipartSourcePhase::Aborting
-            || state.capability_sha256.is_some()
-            || state.generation != self.round.generation
-            || state.lineage != self.round.lineage
-            || self.pending_from.lineage != state.lineage
-            || self.pending_from.disk_id != state.disk_id
-            || self.pending_from.physical_slot != state.physical_slot
-            || self.pending_from.generation.epoch > state.generation.epoch
-            || self.committed.as_ref().is_some_and(|reference| {
-                reference.round.lineage != state.lineage
-                    || reference.slot > 1
-                    || reference.round.generation.epoch > state.generation.epoch
-                    || (reference.round.generation.epoch == state.generation.epoch
-                        && reference.round.generation != state.generation)
-            })
-        {
-            return Err(DiskError::FileCorrupt);
-        }
-        if let Some(reference) = &self.committed {
-            reference.round.validate()?;
-        }
-        Ok(())
-    }
-}
-fn retired_path(source: &Path, state: &SourceState) -> PathBuf {
-    source
-        .join(".mpu-completions")
-        .join(state.backup_owner.to_string())
-        .join("aborted-head.xl.meta")
-}
-fn abort_certificate_path(source: &Path, owner: Uuid, slot: u8) -> PathBuf {
-    source
-        .join(".mpu-completions")
-        .join(owner.to_string())
-        .join(format!("abort-{slot}.msgpack"))
-}
-
-/// The only cold local provenance rehydration token; callers cannot construct it.
-pub(in crate::disk) struct ValidatedAbortCertificate {
-    digest: [u8; 32],
-    round: MultipartAbortRound,
-}
-impl ValidatedAbortCertificate {
-    pub(in crate::disk) fn validate_certificate(&self, certificate: &MultipartAbortCertificate) -> Result<()> {
-        if certificate.digest()? != self.digest || certificate.round != self.round {
-            return Err(DiskError::FileCorrupt);
-        }
-        Ok(())
-    }
-}
-
-pub(super) fn validate_retired_head(
-    source: &Path,
-    base: &Path,
-    root: &os::PublicationRoot,
-    state: &SourceState,
-    head: Option<&SourceHead>,
-) -> Result<()> {
-    let Some(abort) = &state.abort else {
-        return Ok(());
-    };
-    abort.validate(state)?;
-    if let Some(head) = head {
-        if abort.pending_from.head_sha256 != Some(head.sha256)
-            && abort
-                .retired_head
-                .as_ref()
-                .is_none_or(|receipt| receipt.sha256 != head.sha256 || receipt.length != head.length)
-        {
-            return Err(DiskError::ConditionalDeleteConflict);
-        }
-    } else if let Some(receipt) = &abort.retired_head {
-        let observed = os::observe_multipart_source_metadata(&retired_path(source, state), base, root, receipt.length)?;
-        if observed != (receipt.length, receipt.sha256) {
-            return Err(DiskError::FileCorrupt);
-        }
-    }
-    Ok(())
-}
-
-impl SourceStore {
-    pub async fn root_missing(&self) -> Result<bool> {
-        let source = self.source.clone();
-        let base = self.base.clone();
-        let root = self.publication_root.clone();
-        os::run_blocking_namespace_operation(self.lease.clone(), move || {
-            match os::pin_multipart_source_directory(&source, &base, &root) {
-                Ok(_) => Ok(false),
-                Err(error) if error.kind() == ErrorKind::NotFound => Ok(true),
-                Err(error) => Err(error),
-            }
-        })
-        .await
-        .map_err(DiskError::from)
-    }
-    fn verify_abort_cohort(&self, certificate: &MultipartAbortCertificate) -> Result<()> {
-        certificate.verify_with_authority(&self.authority)?;
-        if certificate.disk_ids != self.disk_ids
-            || certificate.disk_ids.get(self.physical_slot) != Some(&self.disk_id)
-            || certificate.round.lineage.path != self.path
-        {
-            return Err(DiskError::ConditionalDeleteConflict);
-        }
-        Ok(())
-    }
-    pub async fn read_abort_certificate(&self, loaded: &LoadedSource) -> Result<Option<MultipartAbortCertificate>> {
-        let Some(reference) = loaded
-            .state
-            .as_ref()
-            .and_then(|state| state.abort.as_ref())
-            .and_then(|abort| abort.committed.as_ref())
-        else {
-            return Ok(None);
-        };
-        let owner = loaded.state.as_ref().ok_or(DiskError::FileCorrupt)?.backup_owner;
-        let path = abort_certificate_path(&self.source, owner, reference.slot);
-        let base = self.base.clone();
-        let root = self.publication_root.clone();
-        let raw = os::run_blocking_namespace_operation(self.lease.clone(), move || {
-            os::read_multipart_source_metadata(&path, &base, &root)
-        })
-        .await?;
-        let mut certificate: MultipartAbortCertificate = decode(&raw)?;
-        let validated = ValidatedAbortCertificate {
-            digest: reference.sha256,
-            round: reference.round.clone(),
-        };
-        certificate.hydrate_owned(&self.authority, &validated)?;
-        self.verify_abort_cohort(&certificate)?;
-        Ok(Some(certificate))
-    }
-    async fn persist_abort_certificate(
-        &self,
-        state: &SourceState,
-        certificate: &MultipartAbortCertificate,
-    ) -> Result<AbortCertificateRef> {
-        self.verify_abort_cohort(certificate)?;
-        let raw = encode(certificate)?;
-        let digest = raw_sha(&raw);
-        let slot = state
-            .abort
-            .as_ref()
-            .and_then(|abort| abort.committed.as_ref())
-            .map_or(0, |current| 1 - current.slot);
-        let path = abort_certificate_path(&self.source, state.backup_owner, slot);
-        let source = self.source.clone();
-        let base = self.base.clone();
-        let root = self.publication_root.clone();
-        os::run_blocking_namespace_operation(self.lease.clone(), move || {
-            let _source = os::pin_multipart_source_directory(&source, &base, &root)?;
-            let parent = path
-                .parent()
-                .ok_or_else(|| io::Error::other("abort certificate has no parent"))?;
-            let _parents = os::mkdir_all_below_existing_base_std(parent, &base, &root)?;
-            // Only the unreferenced slot may be replaced. The old committed
-            // slot remains recoverable until the subsequent state barrier.
-            os::replace_multipart_source_metadata(&path, &raw, &base, &root)?;
-            os::sync_multipart_owned_record_parents(&source, parent, true, &base, &root)
-        })
-        .await?;
-        Ok(AbortCertificateRef {
-            round: certificate.round.clone(),
-            sha256: digest,
-            slot,
-        })
-    }
-    async fn retire_abort_head(&self, state: &SourceState) -> Result<()> {
-        let abort = state.abort.as_ref().ok_or(DiskError::FileCorrupt)?;
-        let source = self.source.clone();
-        let base = self.base.clone();
-        let root = self.publication_root.clone();
-        let state = state.clone();
-        let receipt = abort.retired_head.clone();
-        os::run_blocking_namespace_operation(self.lease.clone(), move || {
-            let _pin = os::pin_multipart_source_directory(&source, &base, &root)?;
-            let canonical = source.join(STORAGE_FORMAT_FILE);
-            if let Some(receipt) = receipt {
-                let retired = retired_path(&source, &state);
-                os::retire_multipart_source_head_std(&canonical, &retired, &base, &root, receipt.length, receipt.sha256)?;
-                os::sync_multipart_owned_record_parents(
-                    &source,
-                    retired
-                        .parent()
-                        .ok_or_else(|| io::Error::other("retired head parent missing"))?,
-                    true,
-                    &base,
-                    &root,
-                )
-            } else {
-                match os::observe_multipart_source_metadata(&canonical, &base, &root, 0) {
-                    Err(error) if error.kind() == ErrorKind::NotFound => os::fsync_dir_std(&source),
-                    Err(error) => Err(error),
-                    Ok(_) => Err(io::Error::new(ErrorKind::AlreadyExists, "closed source unexpectedly has a head")),
-                }
-            }
-        })
-        .await
-        .map_err(DiskError::from)
-    }
-    async fn abort_proof(
-        &self,
-        kind: MultipartAbortProofKind,
-        round: &MultipartAbortRound,
-        certificate_sha256: Option<[u8; 32]>,
-        publication: Option<PublicationIdentity>,
-        challenge: Uuid,
-    ) -> Result<MultipartAbortProof> {
-        let loaded = self.load().await?;
-        let snapshot = loaded.snapshot.ok_or(DiskError::ConditionalDeleteConflict)?;
-        if loaded.head.is_some() {
-            return Err(DiskError::ConditionalDeleteConflict);
-        }
-        MultipartAbortProof::issue(&self.authority, kind, challenge, round.clone(), snapshot, certificate_sha256, publication)
-    }
-    async fn abort_inspection(&self) -> Result<MultipartSourceInspection> {
-        let loaded = self.load().await?;
-        let certificate = self.read_abort_certificate(&loaded).await?;
-        Ok(MultipartSourceInspection {
-            disk_id: self.disk_id,
-            root_missing: self.root_missing().await?,
-            abort_round: loaded
-                .state
-                .as_ref()
-                .and_then(|state| state.abort.as_ref().map(|abort| abort.round.clone())),
-            abort_certificate: certificate,
-            snapshot: loaded.snapshot,
-            original: loaded.original,
-            recovery: loaded.state.as_ref().and_then(|state| state.recovery.clone()),
-            negative_certificate: None,
-            ready_certificate: None,
-            terminal_certificate: loaded.state.map_or_else(Vec::new, |state| state.terminal_certificate),
-        })
-    }
-}
-
-impl LocalDisk {
-    pub(super) async fn recover_multipart_abort_owned(
-        &self,
-        store: SourceStore,
-        operation: MultipartSourceOperation,
-    ) -> Result<MultipartSourceResponse> {
-        match operation {
-            MultipartSourceOperation::UpgradeLegacy { expected } => {
-                let loaded = store.load().await?;
-                if loaded.snapshot.as_ref() != Some(&expected)
-                    || loaded.state.is_some()
-                    || expected.phase != MultipartSourcePhase::Active
-                    || expected.generation.epoch != 0
-                    || !loaded.head_matches_state
-                {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                let mut info = loaded.info.ok_or(DiskError::FileCorrupt)?;
-                if native_source_protocol(&info)? {
-                    return Ok(MultipartSourceResponse::LegacyUpgraded(store.abort_inspection().await?));
-                }
-                if recognized_native_source_controls(&info)? {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                let source = store.source.clone();
-                let base = store.base.clone();
-                let root = store.publication_root.clone();
-                os::run_blocking_namespace_operation(store.lease.clone(), move || {
-                    let _pin = os::pin_multipart_source_directory(&source, &base, &root)?;
-                    for entry in std::fs::read_dir(&source)? {
-                        let entry = entry?;
-                        if entry
-                            .file_name()
-                            .to_str()
-                            .is_some_and(|name| name.get(..5).is_some_and(|prefix| prefix.eq_ignore_ascii_case(".mpu-")))
-                        {
-                            return Err(io::Error::new(ErrorKind::InvalidData, "legacy source has native owned records"));
-                        }
-                    }
-                    Ok(())
-                })
-                .await?;
-                mark_native_source(&mut info);
-                let mut metadata = FileMeta::new();
-                metadata.add_version(info).map_err(Error::other)?;
-                store.replace_head(&metadata.marshal_msg().map_err(Error::other)?).await?;
-                Ok(MultipartSourceResponse::LegacyUpgraded(store.abort_inspection().await?))
-            }
-            MultipartSourceOperation::PrepareAbort { expected, round } => {
-                round.validate()?;
-                let loaded = store.load().await?;
-                if loaded.snapshot.as_ref() != Some(&expected) || expected.lineage != round.lineage {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                let mut state = store.ensure_state(&loaded).await?;
-                if state
-                    .abort
-                    .as_ref()
-                    .and_then(|abort| abort.committed.as_ref())
-                    .is_some_and(|committed| committed.round == round)
-                {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                if state.abort.as_ref().is_none_or(|abort| abort.round != round) {
-                    if round.generation.epoch <= state.generation.epoch {
-                        return Err(DiskError::ConditionalDeleteConflict);
-                    }
-                    if let Some(head) = loaded.head.as_ref() {
-                        let owned = head.sha256 == state.original_sha256
-                            || Some(head.sha256) == state.prepared_sha256
-                            || loaded.head_matches_state;
-                        if !owned {
-                            return Err(DiskError::ConditionalDeleteConflict);
-                        }
-                    }
-                    let previous = state.abort.take();
-                    let retired = previous.as_ref().and_then(|abort| abort.retired_head.clone()).or_else(|| {
-                        loaded.head.as_ref().map(|head| RetiredHead {
-                            sha256: head.sha256,
-                            length: head.length,
-                        })
-                    });
-                    state.abort = Some(NativeAbortState {
-                        round: round.clone(),
-                        pending_from: expected,
-                        retired_head: retired,
-                        committed: previous.and_then(|abort| abort.committed),
-                    });
-                    state.generation = round.generation;
-                    state.capability_sha256 = None;
-                    state.advance(MultipartSourcePhase::Aborting)?;
-                    store.persist(&state).await?;
-                }
-                store.retire_abort_head(&state).await?;
-                Ok(MultipartSourceResponse::AbortPrepared(
-                    store
-                        .abort_proof(MultipartAbortProofKind::Prepared, &round, None, None, round.round)
-                        .await?,
-                ))
-            }
-            MultipartSourceOperation::CommitAbort { expected, certificate } => {
-                let loaded = store.load().await?;
-                if loaded.snapshot.as_ref() != Some(&expected) {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                store.verify_abort_cohort(&certificate)?;
-                let mut state = loaded.state.ok_or(DiskError::ConditionalDeleteConflict)?;
-                let abort = state.abort.as_ref().ok_or(DiskError::ConditionalDeleteConflict)?;
-                if state.phase != MultipartSourcePhase::Aborting
-                    || loaded.head.is_some()
-                    || certificate.round.lineage != state.lineage
-                    || certificate.round.generation.epoch > state.generation.epoch
-                {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                let digest = certificate.digest()?;
-                if abort.committed.as_ref().is_none_or(|reference| reference.sha256 != digest) {
-                    let reference = store.persist_abort_certificate(&state, &certificate).await?;
-                    state.abort.as_mut().ok_or(DiskError::FileCorrupt)?.committed = Some(reference);
-                    state.advance(MultipartSourcePhase::Aborting)?;
-                    store.persist(&state).await?;
-                } else {
-                    store
-                        .read_abort_certificate(&store.load().await?)
-                        .await?
-                        .ok_or(DiskError::FileCorrupt)?;
-                }
-                Ok(MultipartSourceResponse::AbortCommitted(
-                    store
-                        .abort_proof(
-                            MultipartAbortProofKind::Committed,
-                            &certificate.round,
-                            Some(digest),
-                            None,
-                            certificate.round.round,
-                        )
-                        .await?,
-                ))
-            }
-            MultipartSourceOperation::DeleteAborted { expected, certificate } => {
-                let loaded = store.load().await?;
-                if loaded.snapshot.as_ref() != Some(&expected) {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                store.verify_abort_cohort(&certificate)?;
-                let current = store
-                    .read_abort_certificate(&loaded)
-                    .await?
-                    .ok_or(DiskError::ConditionalDeleteConflict)?;
-                if current != certificate || loaded.head.is_some() {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                let permit = AbortDeletePermit::new(&store, &expected, certificate.clone())?;
-                let destination = self.io_get_object_path(RUSTFS_META_TMP_DELETED_BUCKET, &Uuid::new_v4().to_string())?;
-                let source = store.source.clone();
-                let base = store.base.clone();
-                let root = store.publication_root.clone();
-                let lease = os::acquire_namespace_mutation_lease_with_owner(&destination, Some(store.lease.clone())).await;
-                os::run_blocking_namespace_operation_with_sync(lease, true, move || {
-                    permit.validate()?;
-                    os::rename_multipart_source_owned_std(&source, &destination, &base, &root, || permit.validate())
-                })
-                .await?;
-                let proof = MultipartAbortProof::issue(
-                    &store.authority,
-                    MultipartAbortProofKind::Deleted,
-                    certificate.round.round,
-                    certificate.round.clone(),
-                    expected,
-                    Some(certificate.digest()?),
-                    None,
-                )?;
-                Ok(MultipartSourceResponse::AbortDeleted(proof))
-            }
-            MultipartSourceOperation::ConfirmCleanupTarget {
-                expected,
-                publication,
-                challenge,
-            } => {
-                let loaded = store.load().await?;
-                if loaded.snapshot.as_ref() != Some(&expected)
-                    || expected.phase != MultipartSourcePhase::Aborting
-                    || loaded.head.is_some()
-                    || expected.lineage != publication.lineage
-                {
-                    return Err(DiskError::ConditionalDeleteConflict);
-                }
-                let certificate = store
-                    .read_abort_certificate(&loaded)
-                    .await?
-                    .ok_or(DiskError::ConditionalDeleteConflict)?;
-                let target = self.get_object_path(&publication.lineage.bucket, &publication.lineage.object)?;
-                let _owner = os::acquire_metadata_mutation_lease(&target, Some(store.lease.clone())).await;
-                store.validate_cleanup_target(&publication).await?;
-                store
-                    .abort_proof(
-                        MultipartAbortProofKind::CleanupTarget,
-                        &certificate.round,
-                        Some(certificate.digest()?),
-                        Some(publication),
-                        challenge,
-                    )
-                    .await
-                    .map(MultipartSourceResponse::CleanupTargetConfirmed)
-            }
-            _ => Err(DiskError::UnsupportedDisk),
-        }
-    }
-}
-
-/// This permit is neither serializable nor constructible by a generic delete RPC.
-struct AbortDeletePermit {
-    source: PathBuf,
-    base: PathBuf,
-    root: os::PublicationRoot,
-    path: String,
-    disk_id: Uuid,
-    slot: usize,
-    disk_ids: Vec<Uuid>,
-    expected: MultipartSourceSnapshot,
-    certificate: MultipartAbortCertificate,
-    authority: ProofVerificationContext,
-}
-impl AbortDeletePermit {
-    fn new(store: &SourceStore, expected: &MultipartSourceSnapshot, certificate: MultipartAbortCertificate) -> Result<Self> {
-        store.verify_abort_cohort(&certificate)?;
-        Ok(Self {
-            source: store.source.clone(),
-            base: store.base.clone(),
-            root: store.publication_root.clone(),
-            path: store.path.clone(),
-            disk_id: store.disk_id,
-            slot: store.physical_slot,
-            disk_ids: store.disk_ids.clone(),
-            expected: expected.clone(),
-            certificate,
-            authority: store.authority.clone(),
-        })
-    }
-    fn validate(&self) -> io::Result<()> {
-        (|| -> Result<()> {
-            self.certificate.verify_with_authority(&self.authority)?;
-            let loaded = load_source(&self.source, &self.base, &self.root, &self.path, self.disk_id, self.slot, &self.disk_ids)?;
-            if loaded.snapshot.as_ref() != Some(&self.expected) || loaded.head.is_some() {
-                return Err(DiskError::ConditionalDeleteConflict);
-            }
-            let reference = loaded
-                .state
-                .as_ref()
-                .and_then(|state| state.abort.as_ref())
-                .and_then(|abort| abort.committed.as_ref())
-                .ok_or(DiskError::ConditionalDeleteConflict)?;
-            if reference.sha256 != self.certificate.digest()? || reference.round != self.certificate.round {
-                return Err(DiskError::ConditionalDeleteConflict);
-            }
-            let raw = read_optional(
-                &abort_certificate_path(
-                    &self.source,
-                    loaded.state.as_ref().ok_or(DiskError::FileCorrupt)?.backup_owner,
-                    reference.slot,
-                ),
-                &self.base,
-                &self.root,
-            )?
-            .ok_or(DiskError::FileCorrupt)?;
-            if raw_sha(&raw) != reference.sha256 {
-                return Err(DiskError::FileCorrupt);
-            }
-            Ok(())
-        })()
-        .map_err(io::Error::other)
-    }
-}
-
-/// A local ownership token can only be obtained by acquiring the upload's
-/// SourceRW. Appending another owner preserves that guard in the Arc chain.
-#[derive(Clone)]
-pub(super) struct MultipartDeleteOwner {
-    owner: Option<Arc<dyn Send + Sync>>,
-    source_key: Option<PathBuf>,
-}
-impl MultipartDeleteOwner {
-    pub(super) fn namespace_owner(&self) -> Option<Arc<dyn Send + Sync>> {
-        self.owner.clone()
-    }
-    pub(super) fn chain(self, owner: Option<Arc<dyn Send + Sync>>) -> Self {
-        let owner = match (self.owner, owner) {
-            (None, owner) | (owner, None) => owner,
-            (Some(first), Some(second)) if Arc::ptr_eq(&first, &second) => Some(first),
-            (Some(first), Some(second)) => Some(Arc::new((first, second)) as Arc<dyn Send + Sync>),
-        };
-        Self {
-            owner,
-            source_key: self.source_key,
-        }
-    }
-}
-impl LocalDisk {
-    fn multipart_delete_owner_key(&self, volume: &str, path: &str) -> Result<Option<PathBuf>> {
-        super::multipart_staging::reject_noncanonical_scope(&self.root, self.io_root(), volume, path)?;
-        Ok((volume == RUSTFS_META_MULTIPART_BUCKET).then(|| {
-            self.root
-                .join(RUSTFS_META_MULTIPART_BUCKET)
-                .join(super::multipart_staging::upload_scope_root(path, true).to_ascii_lowercase())
-        }))
-    }
-    pub(super) async fn acquire_multipart_delete_owner(
-        &self,
-        volume: &str,
-        path: &str,
-        owner: Option<Arc<dyn Send + Sync>>,
-    ) -> Result<MultipartDeleteOwner> {
-        let source_key = self.multipart_delete_owner_key(volume, path)?;
-        let owner = self.multipart_source_owner(volume, path, true, true, owner).await?;
-        Ok(MultipartDeleteOwner { owner, source_key })
-    }
-    pub(super) fn validate_multipart_delete_owner(
-        &self,
-        token: &MultipartDeleteOwner,
-        volume: &str,
-        path: &str,
-    ) -> Result<Option<Arc<dyn Send + Sync>>> {
-        if token.source_key != self.multipart_delete_owner_key(volume, path)? {
-            return Err(DiskError::ConditionalDeleteConflict);
-        }
-        Ok(token.namespace_owner())
-    }
-}
-
-/// No prefix-wide upload lock exists. Ordinary recursive ancestor deletion is
-/// refused instead of scanning children and racing a newly closed upload.
-#[derive(Clone)]
-pub(super) struct OrdinaryMultipartDeleteCheck {
-    source: PathBuf,
-    base: PathBuf,
-    root: os::PublicationRoot,
-}
-impl OrdinaryMultipartDeleteCheck {
-    pub(super) fn validate(&self) -> Result<()> {
-        if let Some(raw) = read_optional(&self.source.join(STATE), &self.base, &self.root)? {
-            let state: SourceState = decode(&raw)?;
-            if state.abort.is_some() || state.phase == MultipartSourcePhase::Aborting {
-                return Err(DiskError::ConditionalDeleteConflict);
-            }
-        } else if os::multipart_source_has_native_controls(&self.source, &self.base, &self.root)? {
-            return Err(DiskError::ConditionalDeleteConflict);
-        }
-        Ok(())
-    }
-    pub(super) fn callback(&self) -> Arc<dyn Fn() -> io::Result<()> + Send + Sync> {
-        let check = self.clone();
-        Arc::new(move || check.validate().map_err(io::Error::other))
-    }
-}
-impl LocalDisk {
-    /// Admission is read-only but may read metadata. The queued callback keeps
-    /// SourceRW ownership and the job's resource unit after waiter cancellation.
-    pub(super) async fn validate_multipart_delete_admission(
-        &self,
-        check: OrdinaryMultipartDeleteCheck,
-        owner: Option<Arc<dyn Send + Sync>>,
-    ) -> Result<()> {
-        self.blocking_queue
-            .run_cancellable(move |_| {
-                let _owner = owner;
-                Ok(check.validate())
-            })
-            .await
-            .map_err(DiskError::from)?
-    }
-
-    pub(super) fn multipart_delete_check(&self, path: &Path, recursive: bool) -> Result<Option<OrdinaryMultipartDeleteCheck>> {
-        let Ok(relative) = path.strip_prefix(self.io_root()) else {
-            return Ok(None);
-        };
-        let mut components = relative.components();
-        if !components
-            .next()
-            .and_then(|component| component.as_os_str().to_str())
-            .is_some_and(|component| component.eq_ignore_ascii_case(crate::disk::RUSTFS_META_BUCKET))
-        {
-            return Ok(None);
-        }
-        match components.next().and_then(|component| component.as_os_str().to_str()) {
-            Some(component) if component.eq_ignore_ascii_case("multipart") => {}
-            None if recursive => return Err(DiskError::ConditionalDeleteConflict),
-            _ => return Ok(None),
-        }
-        let relative = components.as_path();
-        let relative = relative.to_str().ok_or(DiskError::InvalidPath)?;
-        let upload = super::multipart_staging::upload_scope_root(relative, true);
-        let source = self.io_get_object_path(RUSTFS_META_MULTIPART_BUCKET, upload)?;
-        // Only a production hash/upload root owns a recursive upload scope.
-        // Empty SHA rmdir remains nonrecursive and unchanged.
-        let canonical = Path::new(upload)
-            .file_name()
-            .and_then(|name| name.to_str())
-            .and_then(|name| name.split(['x', 'X']).next())
-            .and_then(|name| Uuid::parse_str(name).ok())
-            .is_some_and(|id| !id.is_nil());
-        let hashed_parent = Path::new(upload)
-            .parent()
-            .and_then(Path::file_name)
-            .and_then(|name| name.to_str())
-            .is_some_and(|name| name.len() == 64 && name.bytes().all(|byte| byte.is_ascii_hexdigit()));
-        if recursive && !(canonical && hashed_parent) {
-            return Err(DiskError::ConditionalDeleteConflict);
-        }
-        Ok(Some(OrdinaryMultipartDeleteCheck {
-            source,
-            base: self.io_root().to_path_buf(),
-            root: self.publication_root.clone(),
-        }))
-    }
-}
-
-#[cfg(test)]
-mod lock_order_tests {
-    include!("multipart_source_lock_order_tests.rs");
-}
@@ -1,460 +0,0 @@
-// Copyright 2026 RustFS Team
-// SPDX-License-Identifier: Apache-2.0
-
-use super::{Fixture, put_actual_predecessor};
-use crate::disk::{
-    DiskAPI, DiskError, RUSTFS_META_MULTIPART_BUCKET, RUSTFS_META_TMP_BUCKET,
-    multipart_source::{
-        MultipartAbortCertificate, MultipartAbortProofKind, MultipartAbortRound, MultipartSourceOperation, MultipartSourcePhase,
-        MultipartSourceResponse, PublicationIdentity, SourceGeneration, native_source_protocol, publication_identity,
-        recognized_native_source_controls,
-    },
-    os::{self, multipart_source_syscall_failures as failures, prepared_publication_test_hooks as hooks},
-};
-use futures::FutureExt as _;
-use rustfs_filemeta::{FileInfoOpts, get_file_info};
-use std::{
-    sync::{Arc, Mutex},
-    time::Duration,
-};
-use time::OffsetDateTime;
-use uuid::Uuid;
-
-// Construct concrete native fixture futures off the caller's poll frame;
-// boxing an already-built future would retain its large stack temporary.
-#[inline(never)]
-fn heap_native<F: std::future::Future>(build: impl FnOnce() -> F) -> std::pin::Pin<Box<F>> {
-    Box::pin(build())
-}
-
-async fn publication_volumes(fixture: &Fixture) {
-    for disk in &fixture.disks {
-        for volume in ["bucket", RUSTFS_META_TMP_BUCKET] {
-            match disk.make_volume(volume).await {
-                Ok(()) | Err(DiskError::VolumeExists) => {}
-                Err(error) => panic!("prepare actual publication volume {volume}: {error}"),
-            }
-        }
-    }
-}
-
-async fn abort_round(fixture: &Fixture) -> MultipartAbortRound {
-    let snapshot = heap_native(|| fixture.snapshot(0)).await;
-    MultipartAbortRound {
-        lineage: snapshot.lineage,
-        generation: SourceGeneration {
-            epoch: snapshot.generation.epoch.checked_add(1).expect("fresh native abort epoch"),
-            nonce: Uuid::new_v4(),
-        },
-        round: Uuid::new_v4(),
-    }
-}
-
-async fn close_all(fixture: &Fixture, round: &MultipartAbortRound) -> MultipartAbortCertificate {
-    let authority = fixture.disks[0].multipart_proof_verification_context();
-    let mut proofs = Vec::with_capacity(4);
-    for slot in 0..4 {
-        let expected = heap_native(|| fixture.snapshot(slot)).await;
-        let response = heap_native(|| {
-            fixture.disks[slot].recover_multipart_source_native(fixture.request(MultipartSourceOperation::PrepareAbort {
-                expected,
-                round: round.clone(),
-            }))
-        })
-        .await
-        .expect("each actual participant durably closes its source");
-        let MultipartSourceResponse::AbortPrepared(proof) = response else {
-            panic!("actual PrepareAbort response");
-        };
-        proof
-            .verify_with_authority(&authority)
-            .expect("actual native preparation proof");
-        assert_eq!(proof.kind, MultipartAbortProofKind::Prepared);
-        assert_eq!(proof.snapshot.physical_slot, slot);
-        assert_eq!(proof.snapshot.disk_id, fixture.disk_ids[slot]);
-        assert_eq!(proof.snapshot.phase, MultipartSourcePhase::Aborting);
-        assert!(proof.snapshot.head_sha256.is_none());
-        proofs.push(proof);
-    }
-    let certificate = MultipartAbortCertificate {
-        round: round.clone(),
-        disk_ids: fixture.disk_ids.clone(),
-        proofs,
-    };
-    certificate
-        .verify_with_authority(&authority)
-        .expect("all-N actual native closure certificate");
-    for slot in 0..4 {
-        let expected = heap_native(|| fixture.snapshot(slot)).await;
-        let response = heap_native(|| {
-            fixture.disks[slot].recover_multipart_source_native(fixture.request(MultipartSourceOperation::CommitAbort {
-                expected,
-                certificate: certificate.clone(),
-            }))
-        })
-        .await
-        .expect("all actual roots durably bind the closure certificate");
-        let MultipartSourceResponse::AbortCommitted(proof) = response else {
-            panic!("actual CommitAbort response");
-        };
-        proof
-            .verify_with_authority(&authority)
-            .expect("actual committed closure proof");
-        assert_eq!(proof.kind, MultipartAbortProofKind::Committed);
-        assert_eq!(proof.certificate_sha256, Some(certificate.digest().expect("exact certificate digest")));
-        assert_eq!(heap_native(|| fixture.inspect(slot)).await.abort_certificate.as_ref(), Some(&certificate));
-        assert!(!fixture.head(slot).exists(), "closure never leaves a reusable canonical head");
-    }
-    certificate
-}
-
-type TargetBytes = Option<(Vec<u8>, Vec<u8>, Vec<u8>)>;
-
-fn target_bytes(fixture: &Fixture) -> Vec<TargetBytes> {
-    fixture
-        .disks
-        .iter()
-        .enumerate()
-        .map(|(slot, disk)| {
-            let target = disk.io_get_object_path("bucket", "object").expect("actual physical target");
-            let raw = match std::fs::read(target.join("xl.meta")) {
-                Ok(raw) => raw,
-                Err(error) if error.kind() == std::io::ErrorKind::NotFound => return None,
-                Err(error) => panic!("read actual target on slot {slot}: {error}"),
-            };
-            let info = get_file_info(
-                &raw,
-                "bucket",
-                "object",
-                "",
-                FileInfoOpts {
-                    data: false,
-                    include_free_versions: false,
-                    include_part_checksums: true,
-                },
-            )
-            .expect("actual target metadata decodes");
-            assert_eq!(info.erasure.distribution.get(slot), Some(&info.erasure.index));
-            let data = target.join(info.data_dir.expect("actual native target DD").to_string());
-            Some((
-                raw,
-                std::fs::read(data.join("part.1")).expect("actual native selected shard"),
-                std::fs::read(data.join("part.1.meta")).expect("actual native selected sidecar"),
-            ))
-        })
-        .collect()
-}
-
-fn assert_target_publications(fixture: &Fixture, expected: &PublicationIdentity, producers: &[usize]) {
-    let targets = target_bytes(fixture);
-    for (slot, target) in targets.iter().enumerate() {
-        if !producers.contains(&slot) {
-            assert!(target.is_none(), "slot {slot} never physically published the target");
-            continue;
-        }
-        let raw = &target.as_ref().expect("actual physical target vote").0;
-        let info = get_file_info(
-            raw,
-            "bucket",
-            "object",
-            "",
-            FileInfoOpts {
-                data: false,
-                include_free_versions: false,
-                include_part_checksums: true,
-            },
-        )
-        .expect("actual target vote decodes");
-        assert_eq!(publication_identity(&info).expect("actual publication tuple").as_ref(), Some(expected));
-        assert_eq!(info.data_dir, Some(expected.final_data_dir));
-    }
-}
-
-#[cfg(unix)]
-#[tokio::test]
-async fn native_abort_waits_for_a_real_late_third_publication_before_closing_all_sources() {
-    let fixture = heap_native(Fixture::new).await;
-    publication_volumes(&fixture).await;
-    let published = heap_native(|| fixture.publish_zero_on(&[0, 1])).await;
-    let expected_publication = published[0].1.publication.clone();
-    assert_target_publications(&fixture, &expected_publication, &[0, 1]);
-    let expected = heap_native(|| fixture.snapshot(2)).await;
-    let round = abort_round(&fixture).await;
-    let completed = fixture.zero_info(
-        2,
-        expected_publication.final_data_dir,
-        OffsetDateTime::from_unix_timestamp_nanos(expected_publication.modified_unix_nanos).expect("shared publication time"),
-    );
-    let target = fixture.disks[2]
-        .io_get_object_path("bucket", "object")
-        .expect("late physical target");
-    let (entered_tx, entered_rx) = tokio::sync::oneshot::channel();
-    let (release_tx, release_rx) = std::sync::mpsc::channel::<()>();
-    let hook = hooks::install(&target.join("xl.meta"), move || {
-        let _ = entered_tx.send(());
-        let _ = release_rx.recv();
-    });
-    let disk = fixture.disks[2].clone();
-    let path = fixture.path.clone();
-    let mut publication = tokio::spawn(async move {
-        disk.rename_data(RUSTFS_META_MULTIPART_BUCKET, &path, completed, "bucket", "object")
-            .await
-    });
-    let mut release = Some(release_tx);
-    let mut joined = false;
-    let observations = std::panic::AssertUnwindSafe(async {
-        tokio::time::timeout(Duration::from_secs(10), entered_rx)
-            .await
-            .expect("actual third publication callback must enter")
-            .expect("physical callback notification");
-        let prepared_head = std::fs::read(fixture.head(2)).expect("the actual callback owns a prepared source head");
-        let mut abort = heap_native(|| {
-            fixture.disks[2].recover_multipart_source_native(fixture.request(MultipartSourceOperation::PrepareAbort {
-                expected,
-                round: round.clone(),
-            }))
-        });
-        // The native entry's first await is the SourceRW writer, before
-        // disk inspection or mutation; polling reaches the real held owner.
-        assert!(futures::poll!(abort.as_mut()).is_pending());
-        assert!(
-            tokio::time::timeout(Duration::from_millis(100), abort.as_mut())
-                .await
-                .is_err(),
-            "PrepareAbort must wait for the actual publication's SourceRW owner"
-        );
-        assert_eq!(std::fs::read(fixture.head(2)).expect("head while publication is blocked"), prepared_head);
-        assert_target_publications(&fixture, &expected_publication, &[0, 1]);
-        drop(release.take());
-        let response = tokio::time::timeout(Duration::from_secs(10), &mut publication)
-            .await
-            .expect("actual publication callback drains")
-            .expect("native publication task")
-            .expect("third actual publication");
-        joined = true;
-        let result = response.multipart_source.expect("actual native publication result");
-        result
-            .verify_with_authority(&fixture.disks[2].multipart_proof_verification_context())
-            .expect("actual third proof");
-        assert_eq!(result.publication, expected_publication);
-        assert!(
-            matches!(
-                tokio::time::timeout(Duration::from_secs(10), abort.as_mut())
-                    .await
-                    .expect("stale closure waiter drains"),
-                Err(DiskError::ConditionalDeleteConflict)
-            ),
-            "the pre-publication snapshot cannot authorize a post-publication closure"
-        );
-        drop(abort);
-        let before = target_bytes(&fixture);
-        assert_target_publications(&fixture, &expected_publication, &[0, 1, 2]);
-        heap_native(|| close_all(&fixture, &round)).await;
-        assert_eq!(target_bytes(&fixture), before, "source closure cannot Undo the three actual target votes");
-    })
-    .catch_unwind()
-    .await;
-    drop(release.take());
-    drop(hook);
-    if !joined {
-        let _ = tokio::time::timeout(Duration::from_secs(10), &mut publication)
-            .await
-            .expect("release and drain actual callback");
-    }
-    if let Err(panic) = observations {
-        std::panic::resume_unwind(panic);
-    }
-    drop(published);
-}
-
-#[cfg(unix)]
-#[tokio::test]
-async fn native_abort_preserves_target_votes_when_compensation_restores_prepared_head_but_target_undo_fails() {
-    let fixture = heap_native(Fixture::new).await;
-    publication_volumes(&fixture).await;
-    let predecessor = heap_native(|| put_actual_predecessor(&fixture, 2)).await;
-    let published = heap_native(|| fixture.publish_zero_on(&[0, 1])).await;
-    let publication = published[0].1.publication.clone();
-    let completed = fixture.zero_info(
-        2,
-        publication.final_data_dir,
-        OffsetDateTime::from_unix_timestamp_nanos(publication.modified_unix_nanos).expect("shared publication time"),
-    );
-    let stale = completed.clone();
-    let original = std::fs::read(fixture.head(2)).expect("exact original before physical publication");
-    let target = fixture.disks[2]
-        .io_get_object_path("bucket", "object")
-        .expect("actual target for failed compensation");
-    let undo_failure = Arc::new(Mutex::new(None::<failures::FailureGuard>));
-    let undo_failure_callback = undo_failure.clone();
-    let sync_hook = Arc::new(Mutex::new(None::<hooks::Guard>));
-    let sync_hook_callback = sync_hook.clone();
-    let target_callback = target.clone();
-    let hook = hooks::install(&target.join("xl.meta"), move || {
-        // macOS checks Rename again after PreparedRename. Arm the Undo fault
-        // only at the actual parent sync, after the initial rename completes.
-        let sync_target = target_callback.clone();
-        let sync_key = if os::dst_dir_fsync_group_commit_enabled() {
-            target_callback
-                .canonicalize()
-                .expect("group commit uses the canonical physical directory")
-        } else {
-            target_callback.clone()
-        };
-        let reached = hooks::install_at(hooks::Stage::DirFsync, &sync_key, move || {
-            if os::dst_dir_fsync_group_commit_enabled() {
-                os::fsync_dir_recorder::set_grouped_failure(&sync_target, std::io::ErrorKind::Other);
-            } else {
-                os::fsync_dir_recorder::set_failure(&sync_target, std::io::ErrorKind::Other);
-            }
-            *undo_failure_callback.lock().expect("retain exact Undo fault") = Some(failures::fail_once(
-                failures::Stage::Rename,
-                &sync_target.join("xl.meta"),
-                std::io::ErrorKind::Other,
-            ));
-        });
-        *sync_hook_callback.lock().expect("retain actual parent sync hook") = Some(reached);
-    });
-    let response = tokio::time::timeout(
-        Duration::from_secs(10),
-        fixture.disks[2].rename_data(RUSTFS_META_MULTIPART_BUCKET, &fixture.path, completed, "bucket", "object"),
-    )
-    .await
-    .expect("actual failed compensation is bounded");
-    assert!(
-        response.is_err(),
-        "failed durability and physical Undo cannot ACK the publication: {response:?}"
-    );
-    let native_error = format!("{:?}", response.as_ref().err());
-    drop(response);
-    drop(hook);
-    drop(sync_hook);
-    assert!(
-        undo_failure
-            .lock()
-            .expect("actual Undo fault")
-            .as_ref()
-            .expect("target callback armed Undo fault")
-            .was_triggered(),
-        "the physical target Undo must actually fail: native_error={native_error}"
-    );
-    drop(undo_failure);
-    let pending_sync_failure = if os::dst_dir_fsync_group_commit_enabled() {
-        os::fsync_dir_recorder::take_grouped_failure(&target)
-    } else {
-        os::fsync_dir_recorder::take_failure(&target)
-    };
-    assert!(
-        pending_sync_failure.is_none(),
-        "the required real target-parent sync failure must be consumed: native_error={native_error}"
-    );
-    let inspection = heap_native(|| fixture.inspect(2)).await;
-    let snapshot = inspection.snapshot.expect("actual prepared state after failed Undo");
-    assert_eq!(snapshot.phase, MultipartSourcePhase::Prepared);
-    assert!(
-        snapshot.head_sha256.is_some(),
-        "compensation restored the exact prepared source proxy first"
-    );
-    assert_eq!(inspection.original.as_deref(), Some(original.as_slice()));
-    let before = target_bytes(&fixture);
-    assert_ne!(before[2].as_ref().expect("failed Undo leaves actual target vote").0, predecessor);
-    assert_eq!(
-        std::fs::read(fixture.head(2)).expect("actual restored prepared head"),
-        before[2].as_ref().expect("the failed Undo retained its real target vote").0
-    );
-    assert_target_publications(&fixture, &publication, &[0, 1, 2]);
-    let round = abort_round(&fixture).await;
-    heap_native(|| close_all(&fixture, &round)).await;
-    assert_eq!(
-        target_bytes(&fixture),
-        before,
-        "Abort never treats the restored prepared head as a target-negative vote"
-    );
-    assert!(
-        fixture.disks[2]
-            .rename_data(RUSTFS_META_MULTIPART_BUCKET, &fixture.path, stale, "bucket", "object")
-            .await
-            .is_err(),
-        "a captured old publication cannot reopen the closed source"
-    );
-    assert_eq!(target_bytes(&fixture), before, "the old publication cannot change retained target votes");
-    drop(published);
-}
-
-#[cfg(unix)]
-#[tokio::test]
-async fn native_abort_waits_for_an_all_active_marked_source_stage_captured_before_reserve() {
-    let fixture = heap_native(Fixture::new).await;
-    publication_volumes(&fixture).await;
-    let expected = heap_native(|| fixture.snapshot(0)).await;
-    let round = abort_round(&fixture).await;
-    for slot in 0..4 {
-        let inspection = heap_native(|| fixture.inspect(slot)).await;
-        let snapshot = inspection.snapshot.expect("all-ACTIVE actual source");
-        assert_eq!(snapshot.phase, MultipartSourcePhase::Active);
-        assert!(snapshot.publication.is_none());
-        assert!(snapshot.capability_sha256.is_none());
-        let raw = std::fs::read(fixture.head(slot)).expect("actual marked initial metadata");
-        let info = get_file_info(
-            &raw,
-            RUSTFS_META_MULTIPART_BUCKET,
-            &fixture.path,
-            "",
-            FileInfoOpts {
-                data: false,
-                include_free_versions: false,
-                include_part_checksums: true,
-            },
-        )
-        .expect("actual marked initial FI");
-        assert!(native_source_protocol(&info).expect("strict known birth marker"));
-        assert!(recognized_native_source_controls(&info).expect("native classification includes the birth marker"));
-        assert!(
-            !fixture.head(slot).parent().unwrap().join(".mpu-source-state").exists(),
-            "all-ACTIVE native Init has no private reservation state yet"
-        );
-    }
-    let completed = fixture.zero_info(0, Uuid::new_v4(), OffsetDateTime::now_utc());
-    let original = std::fs::read(fixture.head(0)).expect("original head before capture");
-    let staging = heap_native(|| fixture.disks[0].prepare_multipart_commit_staging(&fixture.path, &completed, "bucket", None))
-        .await
-        .expect("real private stage captures the original SourceRW owner");
-    assert!(
-        !fixture.head(0).parent().unwrap().join(".mpu-source-state").exists(),
-        "capture must precede native reserve and prepared proxy creation"
-    );
-    let mut abort = heap_native(|| {
-        fixture.disks[0].recover_multipart_source_native(fixture.request(MultipartSourceOperation::PrepareAbort {
-            expected,
-            round: round.clone(),
-        }))
-    });
-    assert!(
-        futures::poll!(abort.as_mut()).is_pending(),
-        "the actual pre-reserve owner must enqueue Abort"
-    );
-    assert!(
-        tokio::time::timeout(Duration::from_millis(100), abort.as_mut())
-            .await
-            .is_err(),
-        "all-ACTIVE metadata cannot allow Abort to overtake a real pre-reserve source owner"
-    );
-    assert_eq!(std::fs::read(fixture.head(0)).expect("head protected by the old stage"), original);
-    assert_eq!(target_bytes(&fixture), vec![None; 4], "the captured stage has not published any target");
-    drop(staging);
-    let response = tokio::time::timeout(Duration::from_secs(10), abort.as_mut())
-        .await
-        .expect("PrepareAbort proceeds after the actual stage releases its SourceRW owner")
-        .expect("unchanged all-ACTIVE snapshot authorizes closure");
-    assert!(matches!(response, MultipartSourceResponse::AbortPrepared(_)));
-    drop(abort);
-    heap_native(|| close_all(&fixture, &round)).await;
-    assert!(
-        fixture.disks[0]
-            .rename_data(RUSTFS_META_MULTIPART_BUCKET, &fixture.path, completed, "bucket", "object")
-            .await
-            .is_err(),
-        "the pre-reserve captured condition cannot publish after certified closure"
-    );
-    assert_eq!(target_bytes(&fixture), vec![None; 4], "fenced old staging must not create any target");
-}
@@ -1,836 +0,0 @@
-// Copyright 2026 RustFS Team
-// SPDX-License-Identifier: Apache-2.0
-
-use super::*;
-use crate::disk::multipart_source::{MultipartAbortCertificate, MultipartAbortProofKind, MultipartAbortRound};
-use crate::disk::{DataDirDeleteStatus, DeleteOptions, RUSTFS_META_TMP_DELETED_BUCKET};
-use std::collections::BTreeMap;
-use std::path::{Path, PathBuf};
-
-// Construct concrete native fixture futures in a separate frame as well as
-// pinning them on the heap; boxing an already-built future in a test poll
-// frame would still leave its large construction temporary on that stack.
-#[inline(never)]
-fn heap_native<F: std::future::Future>(build: impl FnOnce() -> F) -> std::pin::Pin<Box<F>> {
-    Box::pin(build())
-}
-
-fn exact_tree(root: &Path) -> BTreeMap<PathBuf, Option<Vec<u8>>> {
-    let mut entries = BTreeMap::new();
-    if !root.exists() {
-        return entries;
-    }
-    let mut pending = vec![(root.to_path_buf(), 0usize)];
-    while let Some((path, depth)) = pending.pop() {
-        assert!(depth <= 16, "native fixture tree must remain bounded");
-        let metadata = std::fs::symlink_metadata(&path).expect("fixture entry metadata");
-        assert!(!metadata.file_type().is_symlink(), "native fixture contains no aliases");
-        let relative = path
-            .strip_prefix(root)
-            .expect("entry belongs to fixed fixture root")
-            .to_path_buf();
-        if metadata.is_dir() {
-            entries.insert(relative, None);
-            for entry in std::fs::read_dir(path).expect("fixture directory") {
-                pending.push((entry.expect("fixture directory entry").path(), depth + 1));
-            }
-        } else {
-            assert!(metadata.is_file(), "only regular native records may be compared");
-            entries.insert(relative, Some(std::fs::read(path).expect("exact native record bytes")));
-        }
-    }
-    entries
-}
-
-fn source_root(fixture: &Fixture, slot: usize) -> PathBuf {
-    fixture.head(slot).parent().expect("canonical source root").to_path_buf()
-}
-
-fn all_sources(fixture: &Fixture) -> Vec<BTreeMap<PathBuf, Option<Vec<u8>>>> {
-    (0..4).map(|slot| exact_tree(&source_root(fixture, slot))).collect()
-}
-
-fn all_targets(fixture: &Fixture) -> Vec<BTreeMap<PathBuf, Option<Vec<u8>>>> {
-    fixture
-        .disks
-        .iter()
-        .map(|disk| exact_tree(&disk.root.join("bucket/object")))
-        .collect()
-}
-
-async fn prepare_actual_abort(fixture: &Fixture) -> MultipartAbortCertificate {
-    let snapshot = heap_native(|| fixture.snapshot(0)).await;
-    let round = MultipartAbortRound {
-        lineage: snapshot.lineage,
-        generation: SourceGeneration {
-            epoch: snapshot.generation.epoch + 1,
-            nonce: Uuid::new_v4(),
-        },
-        round: Uuid::new_v4(),
-    };
-    let mut proofs = Vec::with_capacity(4);
-    for slot in 0..4 {
-        let response = fixture.disks[slot]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::PrepareAbort {
-                expected: heap_native(|| fixture.snapshot(slot)).await,
-                round: round.clone(),
-            }))
-            .await
-            .expect("close the actual physical source under its writer");
-        let MultipartSourceResponse::AbortPrepared(proof) = response else {
-            panic!("PrepareAbort must return a native closure proof")
-        };
-        proof
-            .verify_with_authority(&fixture.disks[slot].multipart_proof_verification_context())
-            .expect("actual native preparation proof");
-        assert_eq!(proof.snapshot.phase, MultipartSourcePhase::Aborting);
-        assert_eq!(proof.snapshot.physical_slot, slot);
-        assert_eq!(proof.snapshot.disk_id, fixture.disk_ids[slot]);
-        assert!(proof.snapshot.head_sha256.is_none());
-        assert!(proof.snapshot.capability_sha256.is_none());
-        assert!(!fixture.head(slot).exists(), "PrepareAbort retires the canonical head durably");
-        proofs.push(proof);
-    }
-    let certificate = MultipartAbortCertificate {
-        round,
-        disk_ids: fixture.disk_ids.clone(),
-        proofs,
-    };
-    certificate
-        .verify_with_authority(&fixture.disks[0].multipart_proof_verification_context())
-        .expect("real all-N closure certificate");
-    certificate
-}
-
-async fn commit_actual_abort(fixture: &Fixture, certificate: &MultipartAbortCertificate) {
-    for slot in 0..4 {
-        let response = fixture.disks[slot]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::CommitAbort {
-                expected: heap_native(|| fixture.snapshot(slot)).await,
-                certificate: certificate.clone(),
-            }))
-            .await
-            .expect("bind the complete certificate on every actual source root");
-        let MultipartSourceResponse::AbortCommitted(proof) = response else {
-            panic!("CommitAbort must return native durable binding")
-        };
-        proof
-            .verify_with_authority(&fixture.disks[slot].multipart_proof_verification_context())
-            .expect("native committed binding proof");
-        assert_eq!(
-            proof.certificate_sha256,
-            Some(certificate.digest().expect("digest of actual full-N certificate"))
-        );
-        assert_eq!(heap_native(|| fixture.inspect(slot)).await.abort_certificate.as_ref(), Some(certificate));
-    }
-}
-
-async fn assert_generic_deletes_preserve_source(fixture: &Fixture, slot: usize) {
-    let before = exact_tree(&source_root(fixture, slot));
-    let disk = &fixture.disks[slot];
-    for immediate in [false, true] {
-        assert!(
-            disk.delete(
-                RUSTFS_META_MULTIPART_BUCKET,
-                &fixture.path,
-                DeleteOptions {
-                    recursive: true,
-                    immediate,
-                    ..Default::default()
-                }
-            )
-            .await
-            .is_err(),
-            "generic recursive deletion cannot discard durable closure evidence"
-        );
-        assert_eq!(exact_tree(&source_root(fixture, slot)), before);
-    }
-    assert!(
-        disk.delete_paths(RUSTFS_META_MULTIPART_BUCKET, std::slice::from_ref(&fixture.path))
-            .await
-            .is_err(),
-        "raw DeletePaths cannot move a closed upload to trash"
-    );
-    assert_eq!(exact_tree(&source_root(fixture, slot)), before);
-    let prefix = fixture.path.rsplit_once('/').expect("real object hash prefix").0;
-    assert!(
-        disk.delete(
-            RUSTFS_META_MULTIPART_BUCKET,
-            prefix,
-            DeleteOptions {
-                recursive: true,
-                ..Default::default()
-            }
-        )
-        .await
-        .is_err(),
-        "an ancestor prefix cannot bypass an Aborting child"
-    );
-    assert_eq!(exact_tree(&source_root(fixture, slot)), before);
-    assert!(
-        disk.delete_paths(RUSTFS_META_MULTIPART_BUCKET, &[prefix.to_string()])
-            .await
-            .is_err()
-    );
-    assert_eq!(exact_tree(&source_root(fixture, slot)), before);
-}
-
-#[tokio::test]
-async fn native_abort_pending_intent_is_not_a_delete_certificate_and_raw_cleanup_preserves_exact_evidence() {
-    let fixture = heap_native(Fixture::new).await;
-    let original = all_sources(&fixture);
-    let certificate = heap_native(|| prepare_actual_abort(&fixture)).await;
-    let before = all_sources(&fixture);
-    for slot in 0..4 {
-        let initial_head = original[slot].get(Path::new("xl.meta")).unwrap().as_ref().unwrap();
-        for name in ["original.xl.meta", "aborted-head.xl.meta"] {
-            let matching = before[slot]
-                .iter()
-                .filter(|(path, _)| path.file_name().is_some_and(|leaf| leaf == name))
-                .map(|(_, bytes)| bytes.as_ref().unwrap())
-                .collect::<Vec<_>>();
-            assert_eq!(
-                matching,
-                vec![initial_head],
-                "the exact marked initial metadata must survive in both owned records"
-            );
-        }
-        for (path, bytes) in &original[slot] {
-            if path != Path::new("xl.meta") {
-                assert_eq!(
-                    before[slot].get(path),
-                    Some(bytes),
-                    "preparation cannot rewrite original source payload files"
-                );
-            }
-        }
-        let inspection = heap_native(|| fixture.inspect(slot)).await;
-        assert_eq!(inspection.abort_round.as_ref(), Some(&certificate.round));
-        assert!(
-            inspection.abort_certificate.is_none(),
-            "N preparations alone are not a durable committed binding"
-        );
-        heap_native(|| assert_generic_deletes_preserve_source(&fixture, slot)).await;
-        assert!(
-            fixture.disks[slot]
-                .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted {
-                    expected: heap_native(|| fixture.snapshot(slot)).await,
-                    certificate: certificate.clone(),
-                }))
-                .await
-                .is_err(),
-            "the executor must require this root's actual committed certificate"
-        );
-    }
-    assert_eq!(
-        all_sources(&fixture),
-        before,
-        "failed deletion must preserve every original, retired head and receipt byte"
-    );
-}
-
-#[tokio::test]
-async fn native_abort_delete_requires_all_n_actual_slots_and_the_current_exact_committed_binding() {
-    let fixture = heap_native(Fixture::new).await;
-    let first = heap_native(|| prepare_actual_abort(&fixture)).await;
-    heap_native(|| commit_actual_abort(&fixture, &first)).await;
-    let old_expected = heap_native(|| fixture.snapshot(0)).await;
-    let mut fewer = first.clone();
-    fewer.proofs.pop();
-    let mut swapped = first.clone();
-    swapped.disk_ids.swap(0, 1);
-    let foreign_fixture = heap_native(Fixture::new).await;
-    let foreign = heap_native(|| prepare_actual_abort(&foreign_fixture)).await;
-    for certificate in [fewer, swapped, foreign] {
-        let before = all_sources(&fixture);
-        assert!(
-            fixture.disks[0]
-                .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted {
-                    expected: heap_native(|| fixture.snapshot(0)).await,
-                    certificate,
-                }))
-                .await
-                .is_err()
-        );
-        assert_eq!(all_sources(&fixture), before, "bad evidence cannot mutate any native source");
-    }
-    let before = all_sources(&fixture);
-    assert!(
-        fixture.disks[0]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted {
-                expected: heap_native(|| fixture.snapshot(1)).await,
-                certificate: first.clone(),
-            }))
-            .await
-            .is_err(),
-        "a valid neighboring slot is not this participant's expected state"
-    );
-    assert_eq!(all_sources(&fixture), before);
-
-    // A real later all-N intent must preserve the old committed decision until
-    // its own complete certificate is durably committed; it is not a new binding.
-    let second = heap_native(|| prepare_actual_abort(&fixture)).await;
-    assert_ne!(second.round, first.round);
-    let before = all_sources(&fixture);
-    assert_eq!(heap_native(|| fixture.inspect(0)).await.abort_certificate.as_ref(), Some(&first));
-    assert!(
-        fixture.disks[0]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted {
-                expected: heap_native(|| fixture.snapshot(0)).await,
-                certificate: second.clone(),
-            }))
-            .await
-            .is_err(),
-        "a prepared N certificate cannot substitute for the current committed binding"
-    );
-    assert_eq!(all_sources(&fixture), before);
-    heap_native(|| commit_actual_abort(&fixture, &second)).await;
-    let before = all_sources(&fixture);
-    assert!(
-        fixture.disks[0]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted {
-                expected: heap_native(|| fixture.snapshot(0)).await,
-                certificate: first,
-            }))
-            .await
-            .is_err(),
-        "an old real certificate cannot erase a newer committed binding"
-    );
-    assert!(
-        fixture.disks[0]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted {
-                expected: old_expected,
-                certificate: second,
-            }))
-            .await
-            .is_err(),
-        "old state CAS cannot authorize a current certificate's delete"
-    );
-    assert_eq!(all_sources(&fixture), before);
-}
-
-#[tokio::test]
-async fn native_abort_rejects_old_recovery_activation_init_part_and_publication_without_reopening_a_head() {
-    let fixture = heap_native(Fixture::new).await;
-    let initial_raw = std::fs::read(fixture.head(0)).expect("exact marked initial source head");
-    let mut initial = get_file_info(
-        &initial_raw,
-        RUSTFS_META_MULTIPART_BUCKET,
-        &fixture.path,
-        "",
-        FileInfoOpts {
-            data: false,
-            include_free_versions: false,
-            include_part_checksums: true,
-        },
-    )
-    .expect("decode the actual marked initial source");
-    initial.fresh = true;
-    let recovery = heap_native(|| fixture.start_round()).await;
-    let negative = heap_native(|| fixture.negative(&recovery)).await;
-    let ready = heap_native(|| fixture.restore_all(&negative)).await;
-    heap_native(|| activate_all_actual_heads(&fixture, &ready)).await;
-    let old_incoming = fixture.zero_info(0, Uuid::new_v4(), time::OffsetDateTime::now_utc());
-    let certificate = heap_native(|| prepare_actual_abort(&fixture)).await;
-    heap_native(|| commit_actual_abort(&fixture, &certificate)).await;
-    let before = all_sources(&fixture);
-    let current = heap_native(|| fixture.snapshot(0)).await;
-    let fresh_recovery = MultipartRecoveryRound {
-        lineage: current.lineage.clone(),
-        from_generation: current.generation,
-        old_attempt: Uuid::new_v4(),
-        generation: SourceGeneration {
-            epoch: current.generation.epoch + 1,
-            nonce: Uuid::new_v4(),
-        },
-        round: Uuid::new_v4(),
-    };
-    for operation in [
-        MultipartSourceOperation::Claim {
-            expected: current.clone(),
-            round: fresh_recovery,
-        },
-        MultipartSourceOperation::Restore {
-            expected: current.clone(),
-            certificate: negative,
-        },
-        MultipartSourceOperation::Activate {
-            expected: current,
-            certificate: ready,
-        },
-    ] {
-        assert!(
-            fixture.disks[0]
-                .recover_multipart_source(fixture.request(operation))
-                .await
-                .is_err(),
-            "normal recovery methods cannot reopen an irreversibly closed source"
-        );
-        assert_eq!(all_sources(&fixture), before);
-    }
-    assert!(
-        fixture.disks[0]
-            .write_metadata("", RUSTFS_META_MULTIPART_BUCKET, &fixture.path, initial.clone())
-            .await
-            .is_err(),
-        "a late actual Init cannot recreate the retired head"
-    );
-    let new_part = format!("{}/{}/part.2", fixture.path, initial.data_dir.expect("original source data directory"));
-    assert!(
-        fixture.disks[0]
-            .write_all(RUSTFS_META_MULTIPART_BUCKET, &new_part, bytes::Bytes::from_static(b"late part"))
-            .await
-            .is_err()
-    );
-    assert!(
-        fixture.disks[0]
-            .rename_data(RUSTFS_META_MULTIPART_BUCKET, &fixture.path, old_incoming, "bucket", "object")
-            .await
-            .is_err(),
-        "an old captured native publication cannot become current by reading the closure generation"
-    );
-    assert_eq!(all_sources(&fixture), before);
-    assert!(!fixture.head(0).exists());
-}
-
-#[cfg(not(windows))]
-#[tokio::test]
-async fn native_abort_delete_rechecks_the_committed_certificate_inside_the_actual_rename_callback() {
-    use crate::disk::os::prepared_publication_test_hooks as hooks;
-    use std::sync::atomic::{AtomicBool, Ordering};
-    let fixture = heap_native(Fixture::new).await;
-    match fixture.disks[0].make_volume(RUSTFS_META_TMP_DELETED_BUCKET).await {
-        Ok(()) | Err(DiskError::VolumeExists) => {}
-        Err(error) => panic!("prepare the actual strict-delete rename parent: {error}"),
-    }
-    let certificate = heap_native(|| prepare_actual_abort(&fixture)).await;
-    heap_native(|| commit_actual_abort(&fixture, &certificate)).await;
-    let expected = heap_native(|| fixture.snapshot(0)).await;
-    let source = fixture.disks[0]
-        .io_get_object_path(RUSTFS_META_MULTIPART_BUCKET, &fixture.path)
-        .unwrap();
-    let before = all_sources(&fixture);
-    let original_certificate = rmp_serde::to_vec_named(&certificate).expect("actual native certificate encoding");
-    let records = before[0]
-        .iter()
-        .filter(|(_, bytes)| bytes.as_ref() == Some(&original_certificate))
-        .map(|(path, _)| path)
-        .collect::<Vec<_>>();
-    assert_eq!(records.len(), 1, "the first real commit has one exact durable certificate record");
-    let certificate_path = source.join(records[0]);
-    let entered = std::sync::Arc::new(AtomicBool::new(false));
-    let entered_callback = entered.clone();
-    let fault_path = certificate_path.clone();
-    let hook = hooks::install_at(hooks::Stage::Rename, &source, move || {
-        // Simulate physical record corruption AFTER handler prevalidation,
-        // without manufacturing any alternate certificate or local authority.
-        std::fs::write(fault_path, b"faulted committed certificate").expect("inject an actual callback-time record fault");
-        entered_callback.store(true, Ordering::Release);
-    });
-    let outcome = fixture.disks[0]
-        .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted { expected, certificate }))
-        .await;
-    drop(hook);
-    assert!(
-        entered.load(Ordering::Acquire),
-        "the failure must occur at the actual physical rename, not an earlier rejection"
-    );
-    assert!(
-        outcome.is_err(),
-        "the syscall's second permit validation must reject changed committed bytes"
-    );
-    assert!(
-        source_root(&fixture, 0).exists(),
-        "a failed callback must leave the authoritative source in place"
-    );
-    std::fs::write(certificate_path, original_certificate).expect("remove only the injected corruption");
-    assert_eq!(
-        all_sources(&fixture),
-        before,
-        "no source evidence may be moved or deleted by the failed callback"
-    );
-}
-
-#[tokio::test]
-async fn native_abort_partial_delete_retains_the_producer_certificate_and_never_changes_exact_targets() {
-    let mut fixture = heap_native(Fixture::new).await;
-    for slot in 0..4 {
-        heap_native(|| put_actual_predecessor(&fixture, slot)).await;
-        match fixture.disks[slot].make_volume(RUSTFS_META_TMP_DELETED_BUCKET).await {
-            Ok(()) | Err(DiskError::VolumeExists) => {}
-            Err(error) => panic!("prepare the ordinary native trash volume: {error}"),
-        }
-    }
-    let produced = heap_native(|| fixture.publish_zero_on(&[0, 1, 2])).await;
-    let publication = produced[0].1.publication.clone();
-    assert_eq!(produced.len(), 3, "real target C has the ordinary write quorum only on producers 0/1/2");
-    let targets = all_targets(&fixture);
-    let certificate = heap_native(|| prepare_actual_abort(&fixture)).await;
-    assert_eq!(all_targets(&fixture), targets, "preparation must not touch any target");
-    heap_native(|| commit_actual_abort(&fixture, &certificate)).await;
-    assert_eq!(all_targets(&fixture), targets, "committing source closure must not touch any target");
-    for slot in [0, 1, 3] {
-        let before = exact_tree(&source_root(&fixture, slot));
-        let response = fixture.disks[slot]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::DeleteAborted {
-                expected: heap_native(|| fixture.snapshot(slot)).await,
-                certificate: certificate.clone(),
-            }))
-            .await
-            .expect("strict certified native source retirement");
-        let MultipartSourceResponse::AbortDeleted(proof) = response else {
-            panic!("strict deletion returns its bound native outcome")
-        };
-        proof
-            .verify_with_authority(&fixture.disks[slot].multipart_proof_verification_context())
-            .expect("native proof of strict source retirement");
-        assert_eq!(proof.kind, MultipartAbortProofKind::Deleted);
-        assert!(!source_root(&fixture, slot).exists());
-        let trash = fixture.disks[slot].root.join(RUSTFS_META_TMP_DELETED_BUCKET);
-        let exact_retirements = std::fs::read_dir(trash)
-            .expect("native trash entries after strict retirement")
-            .filter_map(|entry| entry.ok())
-            .filter(|entry| entry.file_type().expect("native trash entry type").is_dir() && exact_tree(&entry.path()) == before)
-            .count();
-        assert_eq!(
-            exact_retirements, 1,
-            "atomic retirement preserves every exact source file in one native trash root"
-        );
-        assert_eq!(
-            all_targets(&fixture),
-            targets,
-            "Abort must never restore, rewrite or delete any target version"
-        );
-    }
-    // The coordinator may lose any/all deletion responses; the actual survivor
-    // must preserve and cold-rehydrate the earlier all-N committed decision.
-    drop(produced);
-    heap_native(|| fixture.reopen()).await;
-    let survivor = heap_native(|| fixture.inspect(2)).await;
-    let cold_certificate = survivor
-        .abort_certificate
-        .expect("the only remaining source retains the committed N certificate");
-    cold_certificate
-        .verify_with_authority(&fixture.disks[2].multipart_proof_verification_context())
-        .expect("rehydrated native authority for the committed certificate");
-    assert_eq!(
-        cold_certificate.digest().expect("digest of actual full-N certificate"),
-        certificate.digest().expect("digest of actual full-N certificate")
-    );
-    let challenge = Uuid::new_v4();
-    let response = fixture.disks[2]
-        .recover_multipart_source(fixture.request(MultipartSourceOperation::ConfirmCleanupTarget {
-            expected: survivor.snapshot.expect("remaining producer's exact Aborting state"),
-            publication: publication.clone(),
-            challenge,
-        }))
-        .await
-        .expect("the true producer can confirm C while preserving its cleanup evidence");
-    let MultipartSourceResponse::CleanupTargetConfirmed(proof) = response else {
-        panic!("an existing Aborting source cannot be faked as RootMissing")
-    };
-    proof
-        .verify_with_authority(&fixture.disks[2].multipart_proof_verification_context())
-        .expect("actual surviving producer cleanup target proof");
-    assert_eq!(proof.kind, MultipartAbortProofKind::CleanupTarget);
-    assert_eq!(proof.challenge, challenge);
-    assert_eq!(
-        proof.certificate_sha256,
-        Some(cold_certificate.digest().expect("digest of actual full-N certificate"))
-    );
-    assert_eq!(proof.publication.as_ref(), Some(&publication));
-    assert_eq!(proof.snapshot.phase, MultipartSourcePhase::Aborting);
-    for slot in [0, 1] {
-        let response = fixture.disks[slot]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::ConfirmTerminal {
-                expected: None,
-                publication: publication.clone(),
-                challenge,
-            }))
-            .await
-            .expect("a deleted producer root still has its exact own target retirement anchor");
-        let MultipartSourceResponse::TerminalConfirmed(proof) = response else {
-            panic!("deleted producer target confirmation")
-        };
-        proof
-            .verify_with_authority(&fixture.disks[slot].multipart_proof_verification_context())
-            .expect("fresh native terminal proof of the deleted producer");
-        assert_eq!(proof.kind, MultipartProofKind::RootMissingTerminal);
-        assert_eq!(proof.challenge, challenge);
-    }
-    assert!(
-        fixture.disks[3]
-            .recover_multipart_source(fixture.request(MultipartSourceOperation::ConfirmTerminal {
-                expected: None,
-                publication,
-                challenge,
-            }))
-            .await
-            .is_err(),
-        "the participant that never produced C cannot supply a target vote"
-    );
-    let survivor_source = exact_tree(&source_root(&fixture, 2));
-    assert!(!survivor_source.is_empty());
-    heap_native(|| assert_generic_deletes_preserve_source(&fixture, 2)).await;
-    assert_eq!(all_targets(&fixture), targets);
-}
-
-#[tokio::test]
-async fn native_abort_missing_state_with_actual_owned_records_never_becomes_legacy_or_missing() {
-    let fixture = heap_native(Fixture::new).await;
-    let initial = std::fs::read(fixture.head(0)).expect("exact actual marked source before publication");
-    let produced = heap_native(|| fixture.publish_zero_on(&[0])).await;
-    produced[0]
-        .1
-        .verify_with_authority(&fixture.disks[0].multipart_proof_verification_context())
-        .expect("the orphan input must come from an actual native publisher");
-    let snapshot = heap_native(|| fixture.snapshot(0)).await;
-    assert_eq!(snapshot.phase, MultipartSourcePhase::ConsumedUnsealed);
-    assert!(!fixture.head(0).exists(), "the canonical source head was physically consumed");
-    drop(produced);
-    let source = source_root(&fixture, 0);
-    let prepared = exact_tree(&source);
-    assert!(
-        prepared.iter().any(|(path, bytes)| {
-            path.file_name().is_some_and(|name| name == "original.xl.meta") && bytes.as_ref() == Some(&initial)
-        }),
-        "the original private native backup must really remain"
-    );
-    std::fs::remove_file(source.join(".mpu-source-state")).expect("inject only a lost native state record");
-    let before = all_sources(&fixture);
-    let targets = all_targets(&fixture);
-    let inspected = fixture.disks[0]
-        .recover_multipart_source(fixture.request(MultipartSourceOperation::Inspect { lineage: None }))
-        .await;
-    assert!(
-        matches!(inspected, Err(DiskError::ConditionalDeleteConflict)),
-        "known private native evidence without its state cannot become missing or legacy: {inspected:?}"
-    );
-    assert_eq!(
-        all_sources(&fixture),
-        before,
-        "readonly inspection cannot repair or erase the corrupt input"
-    );
-    let deleted = fixture.disks[0]
-        .delete(
-            RUSTFS_META_MULTIPART_BUCKET,
-            &fixture.path,
-            DeleteOptions {
-                recursive: true,
-                ..Default::default()
-            },
-        )
-        .await;
-    assert!(
-        matches!(deleted, Err(DiskError::ConditionalDeleteConflict)),
-        "ordinary delete must preserve orphan authority: {deleted:?}"
-    );
-    assert_eq!(all_sources(&fixture), before);
-    let deleted = fixture.disks[0]
-        .delete_paths(RUSTFS_META_MULTIPART_BUCKET, std::slice::from_ref(&fixture.path))
-        .await;
-    assert!(
-        matches!(deleted, Err(DiskError::ConditionalDeleteConflict)),
-        "raw DeletePaths must preserve orphan authority: {deleted:?}"
-    );
-    assert_eq!(all_sources(&fixture), before);
-    heap_native(|| assert_generic_deletes_preserve_source(&fixture, 0)).await;
-    assert_eq!(all_sources(&fixture), before, "every exact native evidence byte must remain retryable");
-    assert_eq!(all_targets(&fixture), targets, "corrupt source-state handling cannot change target bytes");
-}
-
-async fn close_actual_source_owned_by_staging(
-    fixture: &Fixture,
-    staging: &crate::disk::local::multipart_staging::MultipartCommitStaging,
-) {
-    let store = heap_native(|| fixture.disks[0].multipart_store_from_staging(&fixture.path, staging))
-        .await
-        .expect("reuse the real staging SourceRW owner without reacquisition");
-    let expected = heap_native(|| store.load())
-        .await
-        .expect("load the actual writer-owned source")
-        .snapshot
-        .expect("the selected source actually exists");
-    assert_eq!(expected.phase, MultipartSourcePhase::Active);
-    assert_eq!(expected.generation.epoch, 0, "the held stage has not reserved a publication");
-    assert!(expected.capability_sha256.is_none());
-    let round = MultipartAbortRound {
-        lineage: expected.lineage.clone(),
-        generation: SourceGeneration {
-            epoch: expected.generation.epoch.checked_add(1).expect("fresh closure epoch"),
-            nonce: Uuid::new_v4(),
-        },
-        round: Uuid::new_v4(),
-    };
-    let response = heap_native(|| {
-        fixture.disks[0].recover_multipart_abort_owned(store, MultipartSourceOperation::PrepareAbort { expected, round })
-    })
-    .await
-    .expect("the same actual SourceRW owner can durably close its source");
-    let MultipartSourceResponse::AbortPrepared(proof) = response else {
-        panic!("the owned native executor must produce an actual preparation proof");
-    };
-    proof
-        .verify_with_authority(&fixture.disks[0].multipart_proof_verification_context())
-        .expect("the closure proof comes from the actual formatted disk");
-    assert_eq!(proof.kind, MultipartAbortProofKind::Prepared);
-    assert_eq!(proof.snapshot.physical_slot, 0);
-    assert_eq!(proof.snapshot.phase, MultipartSourcePhase::Aborting);
-    assert!(proof.snapshot.head_sha256.is_none());
-    assert!(!fixture.head(0).exists());
-}
-
-#[tokio::test]
-async fn native_abort_public_data_dir_delete_waits_for_the_actual_staging_source_writer_and_then_denies_closure() {
-    use std::time::Duration;
-    let fixture = heap_native(Fixture::new).await;
-    for slot in 0..4 {
-        heap_native(|| put_actual_predecessor(&fixture, slot)).await;
-    }
-    match fixture.disks[0].make_volume(RUSTFS_META_TMP_DELETED_BUCKET).await {
-        Ok(()) | Err(DiskError::VolumeExists) => {}
-        Err(error) => panic!("prepare a real public data-dir deletion destination: {error}"),
-    }
-    let initial = heap_native(|| fixture.snapshot(0)).await;
-    let data_path = format!("{}/{}", fixture.path, initial.lineage.original_data_dir);
-    let incoming = fixture.zero_info(0, Uuid::new_v4(), time::OffsetDateTime::now_utc());
-    let staged = heap_native(|| fixture.disks[0].prepare_multipart_commit_staging(&fixture.path, &incoming, "bucket", None))
-        .await
-        .expect("hold the real pre-reservation SourceRW writer and selected physical part");
-    assert!(!source_root(&fixture, 0).join(".mpu-source-state").exists());
-    let active_sources = all_sources(&fixture);
-    let active_targets = all_targets(&fixture);
-    let mut deleted = fixture.disks[0].delete_data_dir(
-        RUSTFS_META_MULTIPART_BUCKET,
-        &data_path,
-        DeleteOptions {
-            recursive: true,
-            ..Default::default()
-        },
-    );
-    assert!(
-        tokio::time::timeout(Duration::from_millis(100), deleted.as_mut())
-            .await
-            .is_err(),
-        "public DeleteDataDir must acquire SourceRW before it can remove this actual selected directory"
-    );
-    assert_eq!(
-        all_sources(&fixture),
-        active_sources,
-        "the queued public API cannot outrun the held stage"
-    );
-    assert_eq!(all_targets(&fixture), active_targets);
-    heap_native(|| close_actual_source_owned_by_staging(&fixture, &staged)).await;
-    let closed_sources = all_sources(&fixture);
-    let closed_targets = all_targets(&fixture);
-    drop(staged);
-    let outcome = tokio::time::timeout(Duration::from_secs(10), deleted.as_mut())
-        .await
-        .expect("public deletion settles after the physical staging owner drains");
-    assert!(
-        matches!(outcome, Err(DiskError::ConditionalDeleteConflict)),
-        "new Aborting state must deny the queued public API: {outcome:?}"
-    );
-    assert_eq!(all_sources(&fixture), closed_sources, "closure evidence and selected bytes remain exact");
-    assert_eq!(all_targets(&fixture), closed_targets);
-}
-
-#[tokio::test]
-async fn native_abort_deferred_snapshot_release_and_settlement_reacquire_source_rw_before_cleanup() {
-    use std::time::Duration;
-    for settle_while_reader_retained in [false, true] {
-        let fixture = heap_native(Fixture::new).await;
-        for slot in 0..4 {
-            heap_native(|| put_actual_predecessor(&fixture, slot)).await;
-        }
-        match fixture.disks[0].make_volume(RUSTFS_META_TMP_DELETED_BUCKET).await {
-            Ok(()) | Err(DiskError::VolumeExists) => {}
-            Err(error) => panic!("prepare actual deferred cleanup destination: {error}"),
-        }
-        let initial = heap_native(|| fixture.snapshot(0)).await;
-        let data_path = format!("{}/{}", fixture.path, initial.lineage.original_data_dir);
-        let incoming = fixture.zero_info(0, Uuid::new_v4(), time::OffsetDateTime::now_utc());
-        let token = fixture.disks[0]
-            .acquire_snapshot_lease(RUSTFS_META_MULTIPART_BUCKET, &data_path)
-            .await
-            .expect("retain an actual snapshot of the selected source directory");
-        assert_eq!(
-            fixture.disks[0]
-                .delete_data_dir(
-                    RUSTFS_META_MULTIPART_BUCKET,
-                    &data_path,
-                    DeleteOptions {
-                        recursive: true,
-                        ..Default::default()
-                    },
-                )
-                .await
-                .expect("the real snapshot reader defers deletion"),
-            DataDirDeleteStatus::Deferred
-        );
-        let staged = heap_native(|| fixture.disks[0].prepare_multipart_commit_staging(&fixture.path, &incoming, "bucket", None))
-            .await
-            .expect("hold the actual source writer after deferral but before physical reclaim");
-        assert!(!source_root(&fixture, 0).join(".mpu-source-state").exists());
-        let active_sources = all_sources(&fixture);
-        let active_targets = all_targets(&fixture);
-        let mut reclaim = heap_native(|| async {
-            if settle_while_reader_retained {
-                heap_native(|| fixture.disks[0].settle_pending_snapshot_deletes(RUSTFS_META_MULTIPART_BUCKET)).await;
-                Ok(())
-            } else {
-                fixture.disks[0]
-                    .release_snapshot_lease(RUSTFS_META_MULTIPART_BUCKET, &data_path, token)
-                    .await
-            }
-        });
-        assert!(
-            tokio::time::timeout(Duration::from_millis(100), reclaim.as_mut())
-                .await
-                .is_err(),
-            "both last-reader release and volume settlement must reacquire the actual SourceRW writer"
-        );
-        assert_eq!(
-            all_sources(&fixture),
-            active_sources,
-            "deferred reclamation cannot bypass the physical writer"
-        );
-        assert_eq!(all_targets(&fixture), active_targets);
-        heap_native(|| close_actual_source_owned_by_staging(&fixture, &staged)).await;
-        let closed_sources = all_sources(&fixture);
-        let closed_targets = all_targets(&fixture);
-        drop(staged);
-        let outcome = tokio::time::timeout(Duration::from_secs(10), reclaim.as_mut())
-            .await
-            .expect("deferred reclaim settles after the staging owner drains");
-        drop(reclaim);
-        if settle_while_reader_retained {
-            assert_eq!(outcome, Ok(()), "the settlement API reports errors by retaining pending cleanup");
-            let release = fixture.disks[0]
-                .release_snapshot_lease(RUSTFS_META_MULTIPART_BUCKET, &data_path, token)
-                .await;
-            assert!(
-                matches!(release, Err(DiskError::ConditionalDeleteConflict)),
-                "retained deferred cleanup still rejects the actual Aborting source: {release:?}"
-            );
-        } else {
-            assert!(
-                matches!(outcome, Err(DiskError::ConditionalDeleteConflict)),
-                "last-reader cleanup must reject the new closure: {outcome:?}"
-            );
-        }
-        assert_eq!(
-            all_sources(&fixture),
-            closed_sources,
-            "last-reader cleanup preserves all closure evidence bytes"
-        );
-        assert_eq!(all_targets(&fixture), closed_targets);
-        heap_native(|| fixture.disks[0].settle_pending_snapshot_deletes(RUSTFS_META_MULTIPART_BUCKET)).await;
-        assert_eq!(
-            all_sources(&fixture),
-            closed_sources,
-            "later volume settlement also preserves the actual closed source"
-        );
-        assert_eq!(all_targets(&fixture), closed_targets);
-    }
-}
@@ -1,113 +0,0 @@
-// Copyright 2026 RustFS Team
-// SPDX-License-Identifier: Apache-2.0
-
-use super::*;
-use crate::disk::{DeleteOptions, endpoint::Endpoint};
-use futures::FutureExt;
-
-#[inline(never)]
-fn heap<F: std::future::Future>(build: impl FnOnce() -> F) -> std::pin::Pin<Box<F>> {
-    Box::pin(build())
-}
-
-#[tokio::test]
-async fn legacy_mpi_residue_under_metadata_ownership_never_waits_for_source_rw_or_deletes_bytes() {
-    let temporary = tempfile::tempdir().expect("legacy residue disk");
-    let endpoint = Endpoint::try_from(temporary.path().to_string_lossy().as_ref()).expect("local endpoint");
-    let disk = heap(|| LocalDisk::new(&endpoint, false)).await.expect("local disk");
-    let path = format!("{}/{}", "a".repeat(64), Uuid::new_v4());
-    let source = disk
-        .io_get_object_path(RUSTFS_META_MULTIPART_BUCKET, &path)
-        .expect("pinned source path");
-    let data_dir = Uuid::new_v4();
-    let transaction = Uuid::new_v4();
-    let data = source.join(data_dir.to_string());
-    let receipt = source.join(transaction.to_string());
-    std::fs::create_dir_all(&data).expect("legacy payload directory");
-    std::fs::create_dir_all(&receipt).expect("legacy transaction directory");
-    let payload = data.join("part.1");
-    std::fs::write(&payload, b"retained legacy payload").expect("legacy payload");
-    let committed = data.join(format!("{}{transaction}", super::super::DELETE_DATA_DIR_MARKER_PREFIX));
-    let quorum = receipt.join(super::super::DELETE_QUORUM_COMMITTED_FILE);
-    std::fs::write(&committed, []).expect("legacy data receipt");
-    std::fs::write(&quorum, []).expect("legacy quorum receipt");
-    let transactions = Box::pin(disk.committed_delete_transactions(RUSTFS_META_MULTIPART_BUCKET, &path))
-        .await
-        .expect("actual metadata-less legacy inventory");
-    assert!(transactions.contains(&transaction), "fixture must enter the actual residue branch");
-
-    // These are the two real lock domains in the reported inversion. A None
-    // token does not grant permission to wait for the already-held SourceRW.
-    let source_writer = disk
-        .multipart_source_owner(RUSTFS_META_MULTIPART_BUCKET, &path, false, true, None)
-        .await
-        .expect("independent source writer");
-    let logical = disk
-        .get_object_path(RUSTFS_META_MULTIPART_BUCKET, &path)
-        .expect("configured metadata key");
-    let metadata: Option<Arc<dyn Send + Sync>> = Some(os::acquire_metadata_mutation_lease(&logical, None).await);
-    let options = DeleteOptions {
-        recursive: true,
-        immediate: true,
-        ..Default::default()
-    };
-    let transaction_path = format!("{path}/{transaction}");
-    let data_path = format!("{path}/{data_dir}");
-    let result = heap(|| {
-        disk.delete_data_dir_with_namespace_owner(RUSTFS_META_MULTIPART_BUCKET, &data_path, options.clone(), metadata.clone())
-    })
-    .now_or_never()
-    .expect("metadata-owned data-dir cleanup cannot wait for SourceRW");
-    assert_eq!(
-        result.expect_err("public or typed source entry is required"),
-        DiskError::ConditionalDeleteConflict
-    );
-
-    let result = heap(|| {
-        disk.delete_unleased_with_namespace_owner(
-            RUSTFS_META_MULTIPART_BUCKET,
-            &transaction_path,
-            &options,
-            metadata.clone(),
-            None,
-        )
-    })
-    .now_or_never()
-    .expect("residue refusal must not await SourceRW");
-    assert_eq!(result.expect_err("unowned MPI residue is retained"), DiskError::ConditionalDeleteConflict);
-    let result =
-        heap(|| disk.finish_version_delete(RUSTFS_META_MULTIPART_BUCKET, &path, transaction, false, metadata.clone(), None))
-            .now_or_never()
-            .expect("version cleanup refuses before any lock wait");
-    assert_eq!(
-        result.expect_err("typed source ownership is required"),
-        DiskError::ConditionalDeleteConflict
-    );
-    let result = heap(|| {
-        disk.finish_delete_transaction_with_namespace_owner(
-            RUSTFS_META_MULTIPART_BUCKET,
-            &path,
-            transaction,
-            metadata.clone(),
-            None,
-        )
-    })
-    .now_or_never()
-    .expect("transaction cleanup refuses before any lock wait");
-    assert_eq!(
-        result.expect_err("typed source ownership is required"),
-        DiskError::ConditionalDeleteConflict
-    );
-    let finished = tokio::time::timeout(
-        std::time::Duration::from_secs(2),
-        Box::pin(disk.finish_internal_delete_residue(RUSTFS_META_MULTIPART_BUCKET, &path, metadata)),
-    )
-    .await
-    .expect("metadata-owned residue must not deadlock");
-    assert_eq!(finished, 0);
-    assert_eq!(std::fs::read(&payload).expect("retained payload"), b"retained legacy payload");
-    assert_eq!(std::fs::read(&committed).expect("retained committed receipt"), b"");
-    assert_eq!(std::fs::read(&quorum).expect("retained quorum receipt"), b"");
-    assert!(!source.join(STORAGE_FORMAT_FILE).exists());
-    drop(source_writer);
-}
@@ -27,11 +27,9 @@ mod io_admission;
 #[cfg(test)]
 pub(crate) mod lifecycle_test_io;
 pub mod local;
-pub mod multipart_source;
+pub use local::artifact_inventory::{ArtifactInventoryFrame, ArtifactInventoryVersion};
 pub mod os;

-pub use local::pool_meta_native::{PoolMetaNativeCasCondition, PoolMetaNativeFileIdentity};
-
 #[cfg(test)]
 pub(crate) use io_admission::DiskIoClass;
 pub(crate) use io_admission::{
@@ -76,6 +74,10 @@ use crate::cluster::rpc::RemoteDisk;
 use crate::cluster::rpc::build_internode_data_transport_from_env;
 use crate::disk::disk_store::DiskStoreRenameDataExt;
 use crate::disk::disk_store::LocalDiskWrapper;
+pub use crate::disk::disk_store::{
+    LegacyFileStream, LegacyFileWrite, LegacyMetadataWrite, LegacyPartMutation, LegacyPartOperation, LegacyPathDelete,
+    LegacyPathDeleteOperation, LegacyRenameData, LegacyRenameFile,
+};
 use crate::disk::health_state::RuntimeDriveHealthState;
 use crate::disk::local::ScanGuard;
 use bytes::Bytes;
@@ -88,7 +90,6 @@ use rustfs_filemeta::{FileInfo, ObjectPartInfo, RawFileInfo};
 use rustfs_madmin::info_commands::DiskMetrics;
 use rustfs_rio::ChunkReaderBox;
 use serde::{Deserialize, Serialize};
-use sha2::Digest as _;
 use std::{fmt::Debug, path::PathBuf, sync::Arc, time::Duration};
 use time::OffsetDateTime;
 use tokio::io::{AsyncRead, AsyncWrite};
@@ -97,6 +98,7 @@ use uuid::Uuid;
 /// Independent admission and physical ownership for one disk rename.
 #[derive(Default)]
 pub(crate) struct RenameDataGuards {
+    pub(crate) artifact_put: Option<crate::bucket::artifact::ArtifactPutIdentity>,
    pub(crate) scanner_publication_lease_token: Option<Uuid>,
    pub(crate) external_guard: Option<Arc<dyn Send + Sync>>,
    pub(crate) namespace_owner: Option<Arc<dyn Send + Sync>>,
@@ -143,73 +145,6 @@ pub fn is_quota_mutation_fence_path(path: &str) -> bool {
        .is_some_and(|digest| digest.len() == 64 && digest.bytes().all(|byte| byte.is_ascii_hexdigit()))
 }

-/// Objects admitted by the native pool metadata recovery protocol.
-#[derive(Clone, Copy, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(rename_all = "snake_case")]
-pub enum PoolMetaNativeObject {
-    PoolBin,
-}
-
-pub const POOL_META_NATIVE_CAS_METADATA_SUFFIX: &str = PoolMetaNativeCasCondition::METADATA_SUFFIX;
-
-#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub struct PoolMetaNativeBackup {
-    pub directory: Uuid,
-    pub data: Bytes,
-}
-
-#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub struct PoolMetaNativeInspection {
-    pub disk_id: Uuid,
-    /// Present only when pool.bin.identity is co-located on this disk.
-    /// None describes placement, not a missing identity in its owning set.
-    pub identity: Option<Bytes>,
-    pub current: Option<Bytes>,
-    pub backups: Vec<PoolMetaNativeBackup>,
-}
-
-impl PoolMetaNativeInspection {
-    /// Bind a repair to the complete observed inventory, independent of listing order.
-    pub fn inventory_sha256(&self) -> Result<[u8; 32]> {
-        let mut backups = self.backups.iter().collect::<Vec<_>>();
-        backups.sort_unstable_by_key(|backup| backup.directory);
-        if backups.windows(2).any(|pair| pair[0].directory == pair[1].directory) {
-            return Err(DiskError::FileCorrupt);
-        }
-        let encoded =
-            rmp_serde::to_vec_named(&(self.disk_id, &self.identity, self.current.as_ref(), backups)).map_err(Error::other)?;
-        Ok(sha2::Sha256::digest(encoded).into())
-    }
-}
-
-#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(tag = "operation", rename_all = "snake_case", deny_unknown_fields)]
-pub enum PoolMetaNativeRecoveryRequest {
-    Probe {},
-    InspectIdentity {},
-    Inspect {
-        object: PoolMetaNativeObject,
-    },
-    Apply {
-        object: PoolMetaNativeObject,
-        expected_disk_id: Uuid,
-        expected_current_sha256: Option<[u8; 32]>,
-        expected_backup_inventory_sha256: [u8; 32],
-        replacement: Bytes,
-    },
-}
-
-#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(tag = "result", content = "value", rename_all = "snake_case", deny_unknown_fields)]
-pub enum PoolMetaNativeRecoveryResponse {
-    Probed,
-    IdentityInspected { disk_id: Uuid, raw: Bytes },
-    Inspected(PoolMetaNativeInspection),
-    Applied,
-}
-
 pub type DiskStore = Arc<Disk>;

 pub type FileReader = Box<dyn AsyncRead + Send + Sync + Unpin>;
@@ -305,6 +240,117 @@ pub enum Disk {
 }

 impl Disk {
+    /// Capture local file-write admission before authoritative classification.
+    pub async fn begin_legacy_file_write(&self, volume: &str) -> Result<LegacyFileWrite> {
+        match self {
+            Self::Local(disk) => disk.begin_legacy_file_write(volume).await,
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
+    pub(crate) async fn begin_legacy_file_write_with_namespace_owner(
+        &self,
+        volume: &str,
+        owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<LegacyFileWrite> {
+        match self {
+            Self::Local(disk) => disk.begin_legacy_file_write_with_namespace_owner(volume, owner).await,
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
+    /// Capture metadata publication admission before authoritative classification.
+    pub async fn begin_legacy_metadata_write(&self, volume: &str, path: &str) -> Result<LegacyMetadataWrite> {
+        match self {
+            Self::Local(disk) => disk.begin_legacy_metadata_write(volume, path).await,
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
+    pub(crate) async fn begin_legacy_metadata_write_with_namespace_owner(
+        &self,
+        volume: &str,
+        path: &str,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<LegacyMetadataWrite> {
+        match self {
+            Self::Local(disk) => {
+                disk.begin_legacy_metadata_write_with_namespace_owner(volume, path, namespace_owner)
+                    .await
+            }
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
+    pub(crate) fn record_legacy_admission_failure(
+        &self,
+        operation: &'static str,
+        error: &DiskError,
+        started: std::time::Instant,
+    ) {
+        if let Self::Local(disk) = self {
+            disk.record_legacy_admission_failure(operation, error, started);
+        }
+    }
+
+    pub(crate) async fn begin_legacy_path_delete(
+        &self,
+        volume: &str,
+        operation: LegacyPathDeleteOperation,
+        owner: Option<Arc<dyn Send + Sync>>,
+        deadline: tokio::time::Instant,
+    ) -> Result<LegacyPathDelete> {
+        match self {
+            Self::Local(disk) => disk.begin_legacy_path_delete(volume, operation, owner, deadline).await,
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
+    pub(crate) async fn begin_legacy_part_mutation(
+        &self,
+        source: Option<(&str, &str)>,
+        destination: (&str, &str),
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+        operation: LegacyPartOperation,
+    ) -> Result<LegacyPartMutation> {
+        match self {
+            Self::Local(disk) => {
+                disk.begin_legacy_part_mutation(source, destination, namespace_owner, operation)
+                    .await
+            }
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
+    pub(crate) async fn begin_legacy_rename_file(
+        &self,
+        source: (&str, &str),
+        destination: (&str, &str),
+        durable: bool,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<LegacyRenameFile> {
+        match self {
+            Self::Local(disk) => {
+                disk.begin_legacy_rename_file(source, destination, durable, namespace_owner)
+                    .await
+            }
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
+    pub(crate) async fn begin_legacy_rename_data(
+        &self,
+        source: (&str, &str),
+        fi: &FileInfo,
+        destination: (&str, &str),
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<LegacyRenameData> {
+        match self {
+            Self::Local(disk) => disk.begin_legacy_rename_data(source, fi, destination, namespace_owner).await,
+            Self::Remote(_) => Err(DiskError::DiskNotFound),
+        }
+    }
+
    /// A read-only probe; the physical delete repeats the same leaf checks.
    pub async fn is_plain_orphan_data_dir(&self, volume: &str, path: &str) -> Result<bool> {
        match self {
@@ -798,50 +844,6 @@ impl DiskAPI for Disk {
            .await
    }

-    async fn rename_data_with_pool_meta_cas(
-        &self,
-        src_volume: &str,
-        src_path: &str,
-        fi: FileInfo,
-        dst_volume: &str,
-        dst_path: &str,
-    ) -> Result<RenameDataResp> {
-        match self {
-            Disk::Local(disk) => {
-                disk.rename_data_with_pool_meta_cas(src_volume, src_path, fi, dst_volume, dst_path)
-                    .await
-            }
-            Disk::Remote(disk) => {
-                disk.rename_data_with_pool_meta_cas(src_volume, src_path, fi, dst_volume, dst_path)
-                    .await
-            }
-        }
-    }
-
-    async fn undo_pool_meta_write(&self, volume: &str, path: &str, fi: FileInfo, opts: DeleteOptions) -> Result<()> {
-        match self {
-            Disk::Local(disk) => disk.undo_pool_meta_write(volume, path, fi, opts).await,
-            Disk::Remote(disk) => disk.undo_pool_meta_write(volume, path, fi, opts).await,
-        }
-    }
-
-    async fn recover_multipart_source(
-        &self,
-        request: multipart_source::MultipartSourceRequest,
-    ) -> Result<multipart_source::MultipartSourceResponse> {
-        match self {
-            Disk::Local(disk) => disk.recover_multipart_source(request).await,
-            Disk::Remote(disk) => disk.recover_multipart_source(request).await,
-        }
-    }
-
-    async fn pool_meta_native_recovery(&self, request: PoolMetaNativeRecoveryRequest) -> Result<PoolMetaNativeRecoveryResponse> {
-        match self {
-            Disk::Local(disk) => disk.pool_meta_native_recovery(request).await,
-            Disk::Remote(disk) => disk.pool_meta_native_recovery(request).await,
-        }
-    }
-
    #[tracing::instrument(level = "trace", skip_all)]
    async fn list_dir(&self, _origvolume: &str, volume: &str, dir_path: &str, count: i32) -> Result<Vec<String>> {
        match self {
@@ -1172,13 +1174,27 @@ impl Disk {
        dst_volume: &str,
        dst_path: &str,
    ) -> Result<RenameDataResp> {
-        let Some(scope) = crate::store::bucket_heal_scope_for_object(dst_volume, dst_path) else {
-            return self
-                .rename_data_borrowed_with_fence(src_volume, src_path, fi, dst_volume, dst_path, None)
-                .await;
+        let bucket_scope = crate::store::bucket_heal_scope_for_object(dst_volume, dst_path);
+        let repair_scope = crate::bucket::artifact::artifact_repair_scope(dst_volume, dst_path);
+        if let Some(scope) = &bucket_scope {
+            scope.check()?;
+        }
+        if let Some(scope) = &repair_scope {
+            scope.check().map_err(DiskError::other)?;
+        }
+        let repair_lease = if let (Self::Local(disk), Some(scope)) = (self, &repair_scope) {
+            if let Some(identity) = scope.receiver_identity() {
+                scope.check_version(fi.version_id).await.map_err(DiskError::other)?;
+                Some(disk.acquire_artifact_repair_lease(identity.receiver_key).await?)
+            } else {
+                None
+            }
+        } else {
+            None
        };
-        scope.check()?;
-        self.rename_data_borrowed_with_fence_and_guard(src_volume, src_path, fi, dst_volume, dst_path, None, Some(scope))
+        let owner: Option<Arc<dyn Send + Sync>> = (bucket_scope.is_some() || repair_scope.is_some())
+            .then(|| Arc::new((bucket_scope, repair_scope, repair_lease)) as Arc<dyn Send + Sync>);
+        self.rename_data_borrowed_with_fence_and_guard(src_volume, src_path, fi, dst_volume, dst_path, None, owner)
            .await
    }

@@ -1189,10 +1205,20 @@ impl Disk {
        fi: &FileInfo,
        dst_volume: &str,
        dst_path: &str,
-        guards: RenameDataGuards,
+        mut guards: RenameDataGuards,
    ) -> RenameDataObservation {
        match self {
            Disk::Local(local_disk) => {
+                if let Some(identity) = guards.artifact_put.take() {
+                    let lease = match local_disk.acquire_artifact_put_lease(identity.receiver_key).await {
+                        Ok(lease) => lease,
+                        Err(error) => return RenameDataObservation::unknown(Err(error)),
+                    };
+                    // Keep the existing timeout policy; physical workers own the
+                    // receiver lease even after the caller's disk deadline.
+                    guards.namespace_owner =
+                        Some(Arc::new((guards.external_guard.clone(), guards.namespace_owner.take(), lease)));
+                }
                local_disk
                    .rename_data_observed_with_guards(src_volume, src_path, fi, dst_volume, dst_path, guards)
                    .await
@@ -1200,39 +1226,17 @@ impl Disk {
            Disk::Remote(remote_disk) => RenameDataObservation::unknown(
                remote_disk
                    .rename_data_borrowed_with_fence(
-                        src_volume,
-                        src_path,
+                        (src_volume, src_path),
                        fi,
-                        dst_volume,
-                        dst_path,
+                        (dst_volume, dst_path),
                        guards.scanner_publication_lease_token,
+                        guards.artifact_put.map(|identity| identity.incarnation),
                    )
                    .await,
            ),
        }
    }

-    pub(crate) async fn rename_data_borrowed_with_fence(
-        &self,
-        src_volume: &str,
-        src_path: &str,
-        fi: &FileInfo,
-        dst_volume: &str,
-        dst_path: &str,
-        scanner_publication_lease_token: Option<Uuid>,
-    ) -> Result<RenameDataResp> {
-        self.rename_data_borrowed_with_fence_and_guard(
-            src_volume,
-            src_path,
-            fi,
-            dst_volume,
-            dst_path,
-            scanner_publication_lease_token,
-            None,
-        )
-        .await
-    }
-
    #[allow(clippy::too_many_arguments)]
    pub async fn rename_data_borrowed_with_fence_and_guard(
        &self,
@@ -1253,12 +1257,11 @@ impl Disk {
            Disk::Remote(remote_disk) => {
                remote_disk
                    .rename_data_borrowed_with_fence(
-                        src_volume,
-                        src_path,
+                        (src_volume, src_path),
                        fi,
-                        dst_volume,
-                        dst_path,
+                        (dst_volume, dst_path),
                        scanner_publication_lease_token,
+                        None,
                    )
                    .await
            }
@@ -1533,32 +1536,6 @@ pub trait DiskAPI: Debug + Send + Sync + 'static {
        dst_path: &str,
    ) -> Result<RenameDataResp>;

-    async fn rename_data_with_pool_meta_cas(
-        &self,
-        _src_volume: &str,
-        _src_path: &str,
-        _file_info: FileInfo,
-        _dst_volume: &str,
-        _dst_path: &str,
-    ) -> Result<RenameDataResp> {
-        Err(DiskError::UnsupportedDisk)
-    }
-
-    async fn undo_pool_meta_write(&self, _volume: &str, _path: &str, _file_info: FileInfo, _opts: DeleteOptions) -> Result<()> {
-        Err(DiskError::UnsupportedDisk)
-    }
-
-    async fn recover_multipart_source(
-        &self,
-        _request: multipart_source::MultipartSourceRequest,
-    ) -> Result<multipart_source::MultipartSourceResponse> {
-        Err(DiskError::UnsupportedDisk)
-    }
-
-    async fn pool_meta_native_recovery(&self, _request: PoolMetaNativeRecoveryRequest) -> Result<PoolMetaNativeRecoveryResponse> {
-        Err(DiskError::UnsupportedDisk)
-    }
-
    // File operations.
    // Read every file and directory within the folder
    async fn list_dir(&self, origvolume: &str, volume: &str, dir_path: &str, count: i32) -> Result<Vec<String>>;
@@ -2096,9 +2073,6 @@ pub enum OldCurrentSize {

 #[derive(Debug, Default, Serialize, Deserialize)]
 pub struct RenameDataResp {
-    /// Native-only source ownership result; older peers omit it.
-    #[serde(default, skip_serializing_if = "Option::is_none")]
-    pub multipart_source: Option<Box<multipart_source::MultipartPublicationResult>>,
    /// Dereferenced erasure data directory retained for older coordinators.
    pub old_data_dir: Option<Uuid>,
    /// Directory containing rollback metadata. This may be synthetic and must
@@ -3110,7 +3084,6 @@ mod tests {
        let signature = vec![0x01, 0x02, 0x03];

        let resp = RenameDataResp {
-            multipart_source: None,
            old_data_dir: Some(uuid),
            rollback_data_dir: Some(uuid),
            cleanup_data_dir: Some(uuid),
@@ -3133,7 +3106,6 @@ mod tests {
    fn test_rename_data_resp_old_current_size_msgpack_roundtrip() {
        for old_current_size in [None, Some(OldCurrentSize::Absent), Some(OldCurrentSize::Present(1337))] {
            let resp = RenameDataResp {
-                multipart_source: None,
                old_data_dir: Some(Uuid::new_v4()),
                rollback_data_dir: Some(Uuid::new_v4()),
                cleanup_data_dir: Some(Uuid::new_v4()),
@@ -3721,115 +3693,3 @@ mod orphan_data_dir_protocol_tests {
        assert!(old.immediate);
    }
 }
-
-#[cfg(test)]
-mod pool_meta_native_inventory_tests {
-    use super::*;
-
-    fn inspection() -> PoolMetaNativeInspection {
-        PoolMetaNativeInspection {
-            disk_id: Uuid::from_u128(1),
-            identity: Some(Bytes::from_static(b"canonical-identity")),
-            current: Some(Bytes::from_static(b"current")),
-            backups: vec![
-                PoolMetaNativeBackup {
-                    directory: Uuid::from_u128(2),
-                    data: Bytes::from_static(b"before-2"),
-                },
-                PoolMetaNativeBackup {
-                    directory: Uuid::from_u128(3),
-                    data: Bytes::from_static(b"before-3"),
-                },
-            ],
-        }
-    }
-
-    #[test]
-    fn pool_meta_native_inventory_binds_every_copy_and_ignores_listing_order() {
-        let baseline = inspection();
-        let digest = baseline.inventory_sha256().expect("valid inventory must hash");
-        let mut reordered = baseline.clone();
-        reordered.backups.reverse();
-        assert_eq!(digest, reordered.inventory_sha256().expect("listing order is irrelevant"));
-        for mutate in [
-            |value: &mut PoolMetaNativeInspection| value.disk_id = Uuid::from_u128(4),
-            |value: &mut PoolMetaNativeInspection| value.identity = Some(Bytes::from_static(b"changed-identity")),
-            |value: &mut PoolMetaNativeInspection| value.identity = None,
-            |value: &mut PoolMetaNativeInspection| value.identity = Some(Bytes::new()),
-            |value: &mut PoolMetaNativeInspection| value.current = None,
-            |value: &mut PoolMetaNativeInspection| value.current = Some(Bytes::from_static(b"new-current")),
-            |value: &mut PoolMetaNativeInspection| {
-                value.backups.pop();
-            },
-            |value: &mut PoolMetaNativeInspection| value.backups[0].directory = Uuid::from_u128(5),
-            |value: &mut PoolMetaNativeInspection| value.backups[0].data = Bytes::from_static(b"changed-backup"),
-        ] {
-            let mut changed = baseline.clone();
-            mutate(&mut changed);
-            assert_ne!(digest, changed.inventory_sha256().expect("changed inventory must hash"));
-        }
-    }
-
-    #[test]
-    fn pool_meta_native_inventory_rejects_duplicate_backup_directories() {
-        let mut value = inspection();
-        value.backups.push(value.backups[0].clone());
-        assert_eq!(value.inventory_sha256(), Err(DiskError::FileCorrupt));
-    }
-
-    #[test]
-    fn pool_meta_native_recovery_payload_rejects_unknown_scope_and_trailing_bytes() {
-        for request in [
-            PoolMetaNativeRecoveryRequest::Probe {},
-            PoolMetaNativeRecoveryRequest::Inspect {
-                object: PoolMetaNativeObject::PoolBin,
-            },
-            PoolMetaNativeRecoveryRequest::InspectIdentity {},
-        ] {
-            if matches!(&request, PoolMetaNativeRecoveryRequest::Probe {}) {
-                assert_eq!(
-                    serde_json::to_value(&request).expect("probe must encode"),
-                    serde_json::json!({"operation":"probe"})
-                );
-            }
-            if matches!(&request, PoolMetaNativeRecoveryRequest::InspectIdentity {}) {
-                assert_eq!(
-                    serde_json::to_value(&request).expect("identity probe must encode"),
-                    serde_json::json!({"operation":"inspect_identity"})
-                );
-            }
-            let mut encoded = rmp_serde::to_vec_named(&request).expect("request must encode");
-            let decoded: PoolMetaNativeRecoveryRequest =
-                rustfs_protos::decode_pool_meta_native_recovery_payload(&encoded).expect("valid request must decode");
-            assert_eq!(request, decoded);
-            encoded.push(0xc0);
-            assert!(
-                rustfs_protos::decode_pool_meta_native_recovery_payload::<PoolMetaNativeRecoveryRequest>(&encoded).is_err(),
-                "trailing bytes must be rejected for {request:?}",
-            );
-        }
-        let response = PoolMetaNativeRecoveryResponse::IdentityInspected {
-            disk_id: Uuid::from_u128(7),
-            raw: Bytes::from_static(b"identity-xlmeta"),
-        };
-        let encoded = rmp_serde::to_vec_named(&response).expect("identity response must encode");
-        let decoded: PoolMetaNativeRecoveryResponse =
-            rustfs_protos::decode_pool_meta_native_recovery_payload(&encoded).expect("identity response must decode");
-        assert_eq!(response, decoded);
-        for value in [
-            serde_json::json!({"operation":"inspect","object":"identity"}),
-            serde_json::json!({"operation":"inspect","object":"pool_bin","path":"other"}),
-            serde_json::json!({"operation":"probe","object":"pool_bin"}),
-            serde_json::json!({"operation":"probe","path":"other"}),
-            serde_json::json!({"operation":"inspect_identity","object":"pool_bin"}),
-            serde_json::json!({"operation":"inspect_identity","path":"pool.bin.identity"}),
-        ] {
-            let encoded = rmp_serde::to_vec_named(&value).expect("invalid request fixture must encode");
-            let decoded = rustfs_protos::decode_pool_meta_native_recovery_payload::<PoolMetaNativeRecoveryRequest>(&encoded);
-            assert!(
-                decoded.is_err(),
-                "invalid native recovery payload was accepted: {value}; decoded={decoded:?}"
-            );
-        }
-    }
-}
@@ -1,554 +0,0 @@
-// Copyright 2026 RustFS Team
-// SPDX-License-Identifier: Apache-2.0
-
-//! Independent all-participant source closure evidence. It is never an EC vote.
-use super::*;
-
-pub const NATIVE_SOURCE_PROTOCOL_SUFFIX: &str = "multipart-source-protocol";
-const NATIVE_SOURCE_PROTOCOL_VALUE: &str = "native-v1";
-const NATIVE_SOURCE_INITIAL_VALUE: &str = "native-initial-v1";
-const ABORT_PROOF_DOMAIN: &[u8] = b"rustfs-mpu-source-abort-proof-v1\0";
-
-pub fn native_source_protocol(fi: &FileInfo) -> Result<bool> {
-    use rustfs_utils::http::metadata_compat::{contains_key_str, get_consistent_str};
-    match get_consistent_str(&fi.metadata, NATIVE_SOURCE_PROTOCOL_SUFFIX) {
-        Some(NATIVE_SOURCE_PROTOCOL_VALUE | NATIVE_SOURCE_INITIAL_VALUE) => Ok(true),
-        Some(_) => Err(DiskError::FileCorrupt),
-        None if contains_key_str(&fi.metadata, NATIVE_SOURCE_PROTOCOL_SUFFIX) => Err(DiskError::FileCorrupt),
-        None => Ok(false),
-    }
-}
-pub fn mark_native_source(fi: &mut FileInfo) {
-    rustfs_utils::http::metadata_compat::insert_str(
-        &mut fi.metadata,
-        NATIVE_SOURCE_PROTOCOL_SUFFIX,
-        NATIVE_SOURCE_PROTOCOL_VALUE.to_owned(),
-    );
-}
-/// Only the unique current NewMultipartUpload writes this origin. Legacy
-/// upgrades keep native-v1, which cannot distinguish a retained completed head.
-pub fn mark_initial_native_source(fi: &mut FileInfo) {
-    rustfs_utils::http::metadata_compat::insert_str(
-        &mut fi.metadata,
-        NATIVE_SOURCE_PROTOCOL_SUFFIX,
-        NATIVE_SOURCE_INITIAL_VALUE.to_owned(),
-    );
-}
-
-/// A strict source-only fast-path hint. It never grants publication rights;
-/// native publication still validates the actual current SourceStore CAS.
-pub fn is_initial_native_source(fi: &FileInfo) -> Result<bool> {
-    use rustfs_utils::http::metadata_compat::{
-        MINIO_INTERNAL_PREFIX, RUSTFS_INTERNAL_PREFIX, get_consistent_str, has_internal_suffix, starts_with_ignore_ascii_case,
-    };
-    native_source_protocol(fi)?;
-    if get_consistent_str(&fi.metadata, NATIVE_SOURCE_PROTOCOL_SUFFIX) != Some(NATIVE_SOURCE_INITIAL_VALUE) {
-        return Ok(false);
-    }
-    let mut rustfs = false;
-    let mut minio = false;
-    for key in fi
-        .metadata
-        .keys()
-        .filter(|key| has_internal_suffix(key, NATIVE_SOURCE_PROTOCOL_SUFFIX))
-    {
-        rustfs |= starts_with_ignore_ascii_case(key, RUSTFS_INTERNAL_PREFIX);
-        minio |= starts_with_ignore_ascii_case(key, MINIO_INTERNAL_PREFIX);
-    }
-    Ok(rustfs && minio && !fi.deleted && !has_nonbirth_native_controls(fi)?)
-}
-
-pub fn recognized_native_source_controls(fi: &FileInfo) -> Result<bool> {
-    let marker = native_source_protocol(fi)?;
-    let state = has_nonbirth_native_controls(fi)?;
-    Ok(marker || state)
-}
-pub(in crate::disk) fn has_nonbirth_native_controls(fi: &FileInfo) -> Result<bool> {
-    native_source_protocol(fi)?;
-    let condition: Option<SourceConditionV1> = decode_metadata(&fi.metadata, MULTIPART_SOURCE_CONDITION_SUFFIX)?;
-    if let Some(condition) = &condition {
-        condition.validate()?;
-    }
-    let publication: Option<PublicationIdentity> = decode_metadata(&fi.metadata, PUBLICATION_SUFFIX)?;
-    if let Some(publication) = &publication {
-        publication.lineage.validate()?;
-    }
-    let status = source_status(fi)?;
-    Ok(condition.is_some() || publication.is_some() || status.is_some())
-}
-
-#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub struct MultipartAbortRound {
-    pub lineage: SourceLineage,
-    pub generation: SourceGeneration,
-    pub round: Uuid,
-}
-impl MultipartAbortRound {
-    pub fn validate(&self) -> Result<()> {
-        self.lineage.validate()?;
-        if self.round.is_nil()
-            || self.generation.epoch == 0
-            || self.generation.nonce.is_nil()
-            || self.generation.nonce == self.lineage.original_data_dir
-        {
-            return Err(DiskError::FileCorrupt);
-        }
-        Ok(())
-    }
-}
-#[derive(Clone, Copy, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(rename_all = "snake_case")]
-pub enum MultipartAbortProofKind {
-    Prepared,
-    Committed,
-    Deleted,
-    CleanupTarget,
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub struct MultipartAbortProof {
-    pub kind: MultipartAbortProofKind,
-    pub challenge: Uuid,
-    pub round: MultipartAbortRound,
-    pub snapshot: MultipartSourceSnapshot,
-    pub certificate_sha256: Option<[u8; 32]>,
-    pub publication: Option<PublicationIdentity>,
-    authentication: ProofAuthentication,
-    #[serde(skip)]
-    native_origin: Option<Arc<NativeOriginWitness>>,
-}
-impl PartialEq for MultipartAbortProof {
-    fn eq(&self, other: &Self) -> bool {
-        self.kind == other.kind
-            && self.challenge == other.challenge
-            && self.round == other.round
-            && self.snapshot == other.snapshot
-            && self.certificate_sha256 == other.certificate_sha256
-            && self.publication == other.publication
-            && self.authentication == other.authentication
-    }
-}
-impl Eq for MultipartAbortProof {}
-impl MultipartAbortProof {
-    fn body(&self) -> Result<Vec<u8>> {
-        let mut body = ABORT_PROOF_DOMAIN.to_vec();
-        body.extend_from_slice(
-            &rmp_serde::to_vec_named(&(
-                MULTIPART_SOURCE_PROTOCOL_VERSION,
-                self.kind,
-                self.challenge,
-                &self.round,
-                &self.snapshot,
-                self.certificate_sha256,
-                &self.publication,
-            ))
-            .map_err(super::super::Error::other)?,
-        );
-        Ok(body)
-    }
-    fn validate(&self) -> Result<()> {
-        self.round.validate()?;
-        let snapshot = &self.snapshot;
-        if snapshot.disk_id.is_nil()
-            || snapshot.lineage != self.round.lineage
-            || snapshot.physical_slot >= snapshot.lineage.geometry.disks()
-            || self.challenge.is_nil()
-            || snapshot.phase != MultipartSourcePhase::Aborting
-            || snapshot.head_sha256.is_some()
-            || snapshot.capability_sha256.is_some()
-            || snapshot.generation.epoch < self.round.generation.epoch
-            || (snapshot.generation.epoch == self.round.generation.epoch && snapshot.generation != self.round.generation)
-            || (self.kind == MultipartAbortProofKind::Prepared
-                && (self.challenge != self.round.round
-                    || snapshot.generation != self.round.generation
-                    || self.certificate_sha256.is_some()
-                    || self.publication.is_some()))
-            || (matches!(self.kind, MultipartAbortProofKind::Committed | MultipartAbortProofKind::Deleted)
-                && (self.challenge != self.round.round || self.certificate_sha256.is_none() || self.publication.is_some()))
-            || (self.kind == MultipartAbortProofKind::CleanupTarget
-                && (self.certificate_sha256.is_none()
-                    || self
-                        .publication
-                        .as_ref()
-                        .is_none_or(|publication| publication.lineage != self.round.lineage)))
-        {
-            return Err(DiskError::FileCorrupt);
-        }
-        Ok(())
-    }
-    pub fn verify(&self) -> Result<()> {
-        self.verify_with_authority(&ProofVerificationContext::RpcOnly)
-    }
-    pub fn verify_with_authority(&self, authority: &ProofVerificationContext) -> Result<()> {
-        self.validate()?;
-        let body = self.body()?;
-        match &self.authentication {
-            ProofAuthentication::ClusterHmac(mac) => {
-                crate::cluster::rpc::verify_tonic_rpc_response_proof(&body, mac).map_err(DiskError::from)
-            }
-            ProofAuthentication::NativeLocal => {
-                let ProofVerificationContext::Local(expected) = authority else {
-                    return Err(DiskError::FileCorrupt);
-                };
-                let origin = self.native_origin.as_ref().ok_or(DiskError::FileCorrupt)?;
-                if !Arc::ptr_eq(expected, &origin.authority) || origin.body_sha256 != <[u8; 32]>::from(Sha256::digest(body)) {
-                    return Err(DiskError::FileCorrupt);
-                }
-                Ok(())
-            }
-        }
-    }
-    pub(in crate::disk) fn issue(
-        authority: &ProofVerificationContext,
-        kind: MultipartAbortProofKind,
-        challenge: Uuid,
-        round: MultipartAbortRound,
-        snapshot: MultipartSourceSnapshot,
-        certificate_sha256: Option<[u8; 32]>,
-        publication: Option<PublicationIdentity>,
-    ) -> Result<Self> {
-        let mut proof = Self {
-            kind,
-            challenge,
-            round,
-            snapshot,
-            certificate_sha256,
-            publication,
-            authentication: ProofAuthentication::NativeLocal,
-            native_origin: None,
-        };
-        proof.validate()?;
-        match authority {
-            ProofVerificationContext::Local(local) => proof.attach_origin(local)?,
-            ProofVerificationContext::RpcOnly => {
-                proof.authentication = ProofAuthentication::ClusterHmac(
-                    crate::cluster::rpc::sign_tonic_rpc_response_proof(&proof.body()?)
-                        .map_err(DiskError::from)?
-                        .try_into()
-                        .map_err(|_| DiskError::FileCorrupt)?,
-                )
-            }
-        }
-        Ok(proof)
-    }
-    fn attach_origin(&mut self, authority: &Arc<LocalMultipartProofAuthority>) -> Result<()> {
-        self.validate()?;
-        self.native_origin = Some(Arc::new(NativeOriginWitness {
-            authority: authority.clone(),
-            body_sha256: Sha256::digest(self.body()?).into(),
-        }));
-        Ok(())
-    }
-    pub(super) fn prepare_wire(&mut self) -> Result<()> {
-        self.validate()?;
-        if let ProofAuthentication::NativeLocal = self.authentication {
-            let origin = self.native_origin.as_ref().ok_or(DiskError::FileCorrupt)?;
-            self.verify_with_authority(&ProofVerificationContext::Local(origin.authority.clone()))?;
-            self.authentication = ProofAuthentication::ClusterHmac(
-                crate::cluster::rpc::sign_tonic_rpc_response_proof(&self.body()?)
-                    .map_err(DiskError::from)?
-                    .try_into()
-                    .map_err(|_| DiskError::FileCorrupt)?,
-            );
-            self.native_origin = None;
-        }
-        self.verify()
-    }
-}
-#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub struct MultipartAbortCertificate {
-    pub round: MultipartAbortRound,
-    pub disk_ids: Vec<Uuid>,
-    pub proofs: Vec<MultipartAbortProof>,
-}
-impl MultipartAbortCertificate {
-    pub fn digest(&self) -> Result<[u8; 32]> {
-        Ok(Sha256::digest(rmp_serde::to_vec_named(self).map_err(super::super::Error::other)?).into())
-    }
-    pub fn verify(&self) -> Result<()> {
-        self.verify_with_authority(&ProofVerificationContext::RpcOnly)
-    }
-    pub fn verify_with_authority(&self, authority: &ProofVerificationContext) -> Result<()> {
-        self.validate_shape()?;
-        for proof in &self.proofs {
-            proof.verify_with_authority(authority)?;
-        }
-        Ok(())
-    }
-    pub(super) fn validate_shape(&self) -> Result<()> {
-        self.round.validate()?;
-        let n = self.round.lineage.geometry.disks();
-        if self.disk_ids.len() != n || self.proofs.len() != n || self.disk_ids.iter().any(Uuid::is_nil) {
-            return Err(DiskError::FileCorrupt);
-        }
-        let mut ids = self.disk_ids.clone();
-        ids.sort_unstable();
-        if ids.windows(2).any(|pair| pair[0] == pair[1]) {
-            return Err(DiskError::FileCorrupt);
-        }
-        let mut slots = [false; 16];
-        for (expected_slot, proof) in self.proofs.iter().enumerate() {
-            proof.validate()?;
-            let slot = proof.snapshot.physical_slot;
-            if slot != expected_slot
-                || proof.kind != MultipartAbortProofKind::Prepared
-                || proof.round != self.round
-                || self.disk_ids.get(slot) != Some(&proof.snapshot.disk_id)
-                || std::mem::replace(&mut slots[slot], true)
-            {
-                return Err(DiskError::FileCorrupt);
-            }
-        }
-        Ok(())
-    }
-    pub(super) fn prepare_wire(&mut self) -> Result<()> {
-        if self.proofs.len() > 16 {
-            return Err(DiskError::FileCorrupt);
-        }
-        for proof in &mut self.proofs {
-            proof.prepare_wire()?;
-        }
-        self.verify()
-    }
-    pub(super) fn validate_wire(&self) -> Result<()> {
-        self.verify()
-    }
-    pub(in crate::disk) fn hydrate_owned(
-        &mut self,
-        authority: &ProofVerificationContext,
-        validated: &super::super::local::multipart_source_abort::ValidatedAbortCertificate,
-    ) -> Result<()> {
-        validated.validate_certificate(self)?;
-        if let ProofVerificationContext::Local(local) = authority {
-            for proof in &mut self.proofs {
-                match proof.authentication {
-                    ProofAuthentication::NativeLocal => proof.attach_origin(local)?,
-                    ProofAuthentication::ClusterHmac(_) => proof.verify()?,
-                }
-            }
-        }
-        self.verify_with_authority(authority)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::super::multipart_proof_authority_tests::{fixture, local_authority};
-    use super::*;
-    fn certificate() -> (ProofVerificationContext, MultipartAbortCertificate) {
-        let authority = local_authority();
-        let (recovery, mut snapshot) = fixture();
-        let round = MultipartAbortRound {
-            lineage: recovery.lineage,
-            generation: SourceGeneration {
-                epoch: 10,
-                nonce: Uuid::new_v4(),
-            },
-            round: Uuid::new_v4(),
-        };
-        snapshot.phase = MultipartSourcePhase::Aborting;
-        snapshot.generation = round.generation;
-        snapshot.head_sha256 = None;
-        snapshot.capability_sha256 = None;
-        snapshot.publication = None;
-        let disk_ids = (0..4).map(|_| Uuid::new_v4()).collect::<Vec<_>>();
-        let proofs = disk_ids
-            .iter()
-            .enumerate()
-            .map(|(slot, id)| {
-                let mut snapshot = snapshot.clone();
-                snapshot.disk_id = *id;
-                snapshot.physical_slot = slot;
-                MultipartAbortProof::issue(
-                    &authority,
-                    MultipartAbortProofKind::Prepared,
-                    round.round,
-                    round.clone(),
-                    snapshot,
-                    None,
-                    None,
-                )
-                .unwrap()
-            })
-            .collect();
-        (authority, MultipartAbortCertificate { round, disk_ids, proofs })
-    }
-    #[test]
-    fn abort_certificate_requires_all_actual_ordered_participants_and_native_provenance() {
-        let (authority, certificate) = certificate();
-        certificate.verify_with_authority(&authority).unwrap();
-        let mut partial = certificate.clone();
-        partial.proofs.pop();
-        assert!(partial.verify_with_authority(&authority).is_err());
-        let mut reordered = certificate.clone();
-        reordered.proofs.swap(0, 1);
-        assert!(reordered.verify_with_authority(&authority).is_err());
-        let mut duplicate = certificate.clone();
-        duplicate.disk_ids[1] = duplicate.disk_ids[0];
-        assert!(duplicate.verify_with_authority(&authority).is_err());
-        let raw = rmp_serde::to_vec_named(&certificate).unwrap();
-        let decoded: MultipartAbortCertificate = rmp_serde::from_slice(&raw).unwrap();
-        assert_eq!(certificate.digest().unwrap(), decoded.digest().unwrap());
-        assert!(
-            decoded.verify_with_authority(&authority).is_err(),
-            "bare local bytes cannot issue closure authority"
-        );
-        let mut forged = certificate.clone();
-        forged.round.generation.epoch += 1;
-        assert!(forged.verify_with_authority(&authority).is_err());
-        assert!(certificate.verify_with_authority(&local_authority()).is_err());
-    }
-    #[test]
-    fn abort_target_proof_requires_committed_certificate_and_binds_historical_target() {
-        let (authority, certificate) = certificate();
-        let mut snapshot = certificate.proofs[0].snapshot.clone();
-        snapshot.generation.epoch += 1;
-        snapshot.generation.nonce = Uuid::new_v4();
-        let publication = PublicationIdentity {
-            lineage: certificate.round.lineage.clone(),
-            source_generation: SourceGeneration {
-                epoch: 0,
-                nonce: certificate.round.lineage.original_data_dir,
-            },
-            attempt: Uuid::new_v4(),
-            version_id: Some(Uuid::new_v4()),
-            final_data_dir: Uuid::new_v4(),
-            modified_unix_nanos: 1,
-            completion_identity: [7; 32],
-        };
-        let challenge = Uuid::new_v4();
-        assert!(
-            MultipartAbortProof::issue(
-                &authority,
-                MultipartAbortProofKind::CleanupTarget,
-                challenge,
-                certificate.round.clone(),
-                snapshot.clone(),
-                None,
-                Some(publication.clone())
-            )
-            .is_err()
-        );
-        let proof = MultipartAbortProof::issue(
-            &authority,
-            MultipartAbortProofKind::CleanupTarget,
-            challenge,
-            certificate.round.clone(),
-            snapshot,
-            Some(certificate.digest().unwrap()),
-            Some(publication),
-        )
-        .unwrap();
-        proof.verify_with_authority(&authority).unwrap();
-        let mut rebound = proof.clone();
-        rebound.publication.as_mut().unwrap().final_data_dir = Uuid::new_v4();
-        assert!(rebound.verify_with_authority(&authority).is_err());
-        let mut replay = proof;
-        replay.challenge = Uuid::new_v4();
-        assert!(replay.verify_with_authority(&authority).is_err());
-    }
-    #[test]
-    fn birth_marker_is_strict_dual_family_source_only_and_does_not_change_lineage() {
-        use rustfs_utils::http::metadata_compat::{get_consistent_str, insert_str};
-        let mut source = FileInfo::default();
-        assert!(!native_source_protocol(&source).unwrap());
-        let before = digest_value(&normalized_info(&source, false)).unwrap();
-        mark_native_source(&mut source);
-        assert!(native_source_protocol(&source).unwrap());
-        assert_eq!(
-            get_consistent_str(&source.metadata, NATIVE_SOURCE_PROTOCOL_SUFFIX),
-            Some(NATIVE_SOURCE_PROTOCOL_VALUE)
-        );
-        assert_eq!(before, digest_value(&normalized_info(&source, false)).unwrap());
-        insert_str(&mut source.metadata, "user-visible-identity", "changed".into());
-        assert_ne!(
-            before,
-            digest_value(&normalized_info(&source, false)).unwrap(),
-            "only the source protocol control is projected"
-        );
-        source.metadata.insert(
-            format!("{}{}", rustfs_utils::http::MINIO_INTERNAL_PREFIX, NATIVE_SOURCE_PROTOCOL_SUFFIX),
-            "native-v2".into(),
-        );
-        assert!(native_source_protocol(&source).is_err());
-        assert!(recognized_native_source_controls(&source).is_err());
-        mark_native_source(&mut source);
-        strip_native_controls(&mut source.metadata);
-        assert!(!native_source_protocol(&source).unwrap());
-    }
-    #[test]
-    fn only_explicit_dual_family_initial_origins_without_status_can_skip_replay() {
-        use rustfs_utils::http::metadata_compat::{MINIO_INTERNAL_PREFIX, RUSTFS_INTERNAL_PREFIX};
-        let mut source = FileInfo::default();
-        mark_native_source(&mut source);
-        assert!(native_source_protocol(&source).unwrap());
-        assert!(
-            !is_initial_native_source(&source).unwrap(),
-            "existing and upgraded v1 heads remain ambiguous"
-        );
-        mark_initial_native_source(&mut source);
-        assert!(is_initial_native_source(&source).unwrap());
-        source
-            .metadata
-            .remove(&format!("{MINIO_INTERNAL_PREFIX}{NATIVE_SOURCE_PROTOCOL_SUFFIX}"));
-        assert!(
-            !is_initial_native_source(&source).unwrap(),
-            "a single compatibility alias is not a fresh-origin proof"
-        );
-        mark_initial_native_source(&mut source);
-        source.metadata.insert(
-            format!("{RUSTFS_INTERNAL_PREFIX}{NATIVE_SOURCE_PROTOCOL_SUFFIX}"),
-            NATIVE_SOURCE_PROTOCOL_VALUE.into(),
-        );
-        assert!(
-            is_initial_native_source(&source).is_err(),
-            "conflicting origins never authorize the fast path"
-        );
-        mark_initial_native_source(&mut source);
-        let generation = SourceGeneration {
-            epoch: 1,
-            nonce: Uuid::new_v4(),
-        };
-        set_source_status(
-            &mut source,
-            &SourceStatus {
-                generation,
-                recovering: false,
-                round: Some(Uuid::new_v4()),
-                ready_sha256: Some([3; 32]),
-            },
-        )
-        .unwrap();
-        assert!(is_active_source(&source).unwrap(), "the restored fixture is an ordinary ACTIVE source");
-        assert!(
-            !is_initial_native_source(&source).unwrap(),
-            "an atomically restored ACTIVE head must still probe prior targets"
-        );
-    }
-
-    #[test]
-    fn omitted_abort_fields_preserve_existing_inspection_encoding() {
-        let inspection = MultipartSourceInspection {
-            disk_id: Uuid::new_v4(),
-            snapshot: None,
-            original: None,
-            recovery: None,
-            negative_certificate: None,
-            ready_certificate: None,
-            terminal_certificate: Vec::new(),
-            root_missing: false,
-            abort_round: None,
-            abort_certificate: None,
-        };
-        let json = serde_json::to_value(&inspection).unwrap();
-        assert!(json.get("root_missing").is_none());
-        assert!(json.get("abort_round").is_none());
-        assert!(json.get("abort_certificate").is_none());
-        let decoded: MultipartSourceInspection = serde_json::from_value(json).unwrap();
-        assert!(!decoded.root_missing);
-        assert!(decoded.abort_certificate.is_none());
-    }
-}
@@ -153,10 +153,13 @@ async fn refresh_loss_lock_client_keeps_rejection_observable_for_late_waiters()
    );
 }

-/// Returns the backing [`tempfile::TempDir`]s alongside the set so callers keep
-/// them alive for the test's duration and the directories are removed on drop.
-pub(crate) async fn make_local_set_disks(drive_count: usize, parity_count: usize) -> (Vec<tempfile::TempDir>, Arc<SetDisks>) {
-    make_local_set_disks_with_ctx(drive_count, parity_count, crate::runtime::instance::bootstrap_ctx()).await
+/// Keep the real metadata owner and backing directories alive together.
+pub(crate) async fn make_local_set_disks(
+    drive_count: usize,
+    parity_count: usize,
+) -> (crate::set_disk::HermeticSetFixture, Arc<SetDisks>) {
+    let (fixture, _, set) = crate::set_disk::hermetic_set_disks_for_pool_with_default_parity(drive_count, 0, parity_count).await;
+    (fixture, set)
 }

 /// Like [`make_local_set_disks`], but binds the set to an explicit instance
@@ -203,29 +206,6 @@ pub(crate) async fn make_local_set_disks_with_ctx(
        disks.push(Some(disk));
    }

-    // This constructor owns a complete real local cohort, including every
-    // formatted physical slot. It bypasses ECStore's normal startup binding.
-    let topology = crate::layout::endpoints::EndpointServerPools(vec![crate::layout::endpoints::PoolEndpoints {
-        legacy: false,
-        set_count: 1,
-        drives_per_set: drive_count,
-        endpoints: endpoints.clone().into(),
-        cmd_line: String::new(),
-        platform: "test".into(),
-    }]);
-    let authority = ctx
-        .bind_multipart_proof_topology(&topology)
-        .expect("blackbox fixture must register its complete local topology");
-    crate::disk::multipart_source::bind_multipart_proof_snapshot(&disks, &authority)
-        .expect("blackbox native handles must belong to the registered instance");
-    for (slot, disk) in disks.iter().enumerate() {
-        assert_eq!(
-            disk.as_ref().expect("blackbox fixture disk").get_disk_id().await.unwrap(),
-            Some(format.erasure.sets[0][slot]),
-            "blackbox fixture must bind the actual complete formatted cohort"
-        );
-    }
-
    let set_disks = SetDisks::new_with_instance_ctx(
        "ecstore-validation-blackbox".to_string(),
        Arc::new(RwLock::new(disks)),
@@ -779,6 +759,9 @@ async fn blackbox_range_read_restores_exact_slice_with_one_offline_disk() {
 #[tokio::test]
 async fn blackbox_delete_marker_hides_object_body_without_erasing_prior_version_metadata() {
    let (_dirs, set_disks) = make_local_set_disks(4, 2).await;
+    let store = crate::bucket::metadata_sys::object_store_in(set_disks.instance_ctx())
+        .await
+        .expect("fixture metadata authority should belong to this set");
    let bucket = "bb-delete-marker-read-negative";
    let object = "object.bin";
    let opts = ObjectOptions {
@@ -788,13 +771,26 @@ async fn blackbox_delete_marker_hides_object_body_without_erasing_prior_version_
        ..Default::default()
    };

-    set_disks
+    store
        .make_bucket(bucket, &MakeBucketOptions::default())
        .await
        .expect("bucket should be created");
    let mut reader = PutObjReader::from_vec(b"body hidden by delete marker".to_vec());
    set_disks
-        .put_object(bucket, object, &mut reader, &opts)
+        .put_object(
+            bucket,
+            object,
+            &mut reader,
+            &ObjectOptions {
+                object_lock_config_snapshot: Some(
+                    store
+                        .object_lock_config_snapshot(bucket)
+                        .await
+                        .expect("PUT fixture should own the bucket lifecycle and Object Lock snapshot"),
+                ),
+                ..opts.clone()
+            },
+        )
        .await
        .expect("object should be written before delete marker");

@@ -56,7 +56,7 @@ mod storage_api_contracts;
 mod store;

 pub use disk::{with_background_disk_io, with_background_resource_unit};
-pub use store::PoolMetaWriteGateStatus;
+pub use store::{BucketIncarnationFenceGuard, PoolMetaWriteGateStatus};

 // pub mod checksum;
 mod event;
@@ -152,7 +152,7 @@ pub struct ObjectLockConfigSnapshot {
    config_revision: Option<OffsetDateTime>,
    state: crate::bucket::metadata_sys::ObjectLockConfigState,
    lifecycle_fence: NamespaceLockFence,
-    _lifecycle_guard: Option<rustfs_lock::NamespaceLockGuard>,
+    _lifecycle_guard: Option<Arc<rustfs_lock::NamespaceLockGuard>>,
    metadata_transaction_guard: Option<Arc<rustfs_lock::NamespaceLockGuard>>,
 }

@@ -210,11 +210,36 @@ impl ObjectLockConfigSnapshot {
            config_revision: Some(config_revision),
            state,
            lifecycle_fence,
-            _lifecycle_guard: Some(lifecycle_guard),
+            _lifecycle_guard: Some(Arc::new(lifecycle_guard)),
            metadata_transaction_guard: Some(Arc::new(metadata_transaction_guard)),
        }
    }

+    pub(crate) fn for_store_bucket_under_lifecycle_owner(
+        store_id: Uuid,
+        bucket: &str,
+        bucket_incarnation_id: Uuid,
+        config_revision: OffsetDateTime,
+        state: crate::bucket::metadata_sys::ObjectLockConfigState,
+        lifecycle_guard: Arc<rustfs_lock::NamespaceLockGuard>,
+        metadata_transaction_guard: Arc<rustfs_lock::NamespaceLockGuard>,
+    ) -> Self {
+        let mut lifecycle_fence = NamespaceLockFence::new();
+        if let Some(signal) = lifecycle_guard.lock_lost_signal() {
+            lifecycle_fence.add_signal(signal);
+        }
+        Self {
+            store_id: Some(store_id),
+            bucket: Some(bucket.to_owned()),
+            bucket_incarnation_id: Some(bucket_incarnation_id),
+            config_revision: Some(config_revision),
+            state,
+            lifecycle_fence,
+            _lifecycle_guard: Some(lifecycle_guard),
+            metadata_transaction_guard: Some(metadata_transaction_guard),
+        }
+    }
+
    pub(crate) fn for_store_bucket_under_lifecycle_fence(
        store_id: Uuid,
        bucket: &str,
@@ -254,6 +279,15 @@ impl ObjectLockConfigSnapshot {
        &self.state
    }

+    pub(crate) fn is_unbound(&self) -> bool {
+        self.store_id.is_none()
+            && self.bucket.is_none()
+            && self.bucket_incarnation_id.is_none()
+            && self.config_revision.is_none()
+            && self._lifecycle_guard.is_none()
+            && self.metadata_transaction_guard.is_none()
+    }
+
    pub(crate) fn is_valid_for_destructive_put(&self, store_id: Uuid, bucket: &str, bucket_incarnation_id: Uuid) -> bool {
        self.store_id == Some(store_id)
            && self.bucket.as_deref() == Some(bucket)
@@ -266,6 +300,11 @@ impl ObjectLockConfigSnapshot {
                .is_some_and(|guard| !guard.is_lock_lost())
    }

+    pub(crate) fn owns_bucket_lifecycle_fence(&self, store_id: Uuid, bucket: &str, bucket_incarnation_id: Uuid) -> bool {
+        self.is_valid_for_destructive_put(store_id, bucket, bucket_incarnation_id)
+            && self._lifecycle_guard.as_ref().is_some_and(|guard| !guard.is_lock_lost())
+    }
+
    /// Share the held transaction lock without queuing another reader behind
    /// a metadata writer that is itself waiting for this snapshot to drop.
    pub(crate) fn metadata_transaction_guard_for(
@@ -962,6 +1001,12 @@ pub struct ObjectOptions {
    /// A genuine target write guard; loss fences alone do not authorize a borrowed write.
    #[doc(hidden)]
    pub write_lock_context: Option<WriteLockContext>,
+    /// Ordinary ECStore PUT target bound to its bucket's immutable artifact namespace.
+    #[doc(hidden)]
+    pub artifact_put_target: Option<Arc<crate::bucket::artifact::ArtifactPutTarget>>,
+    /// Owned, non-serializable authority for one fully sealed managed version.
+    #[doc(hidden)]
+    pub artifact_delete_target: Option<Arc<crate::bucket::artifact::ArtifactDeleteTarget>>,
    /// In-process delete ownership for late filesystem completion. Never
    /// serialized or copied into object metadata.
    #[doc(hidden)]
@@ -1041,6 +1086,9 @@ pub struct ObjectOptions {
    /// Proves an upper layer holds the bucket lifecycle sentinel. A separate
    /// fence avoids recursively acquiring the read lock behind a queued writer.
    pub bucket_lifecycle_lock_fence: Option<NamespaceLockFence>,
+    /// Actual generation owner retained by storage commits and their physical tails.
+    #[doc(hidden)]
+    pub bucket_incarnation_fence: Option<Arc<crate::store::BucketIncarnationFenceGuard>>,
    /// Retains the actual lifecycle guard for an owned multipart commit. A
    /// lock-loss fence alone does not keep a cancelled caller's lock alive. The
    /// owner also retains the continuous incarnation-validation coverage.
@@ -71,7 +71,7 @@ impl WriteCommitGuard {

    /// Namespace locks key the disk identity of the name (see `new_ns_lock`),
    /// so a guard proves every spelling that resolves to the same file.
-    fn matches(&self, bucket: &str, object: &str) -> bool {
+    pub(crate) fn matches(&self, bucket: &str, object: &str) -> bool {
        self.bucket.as_ref() == bucket && self.object.as_ref() == object_name_disk_identity(object).as_ref()
    }
 }
@@ -45,7 +45,6 @@ use crate::bucket::lifecycle::bucket_lifecycle_ops::{ExpiryState, TransitionStat
 use crate::bucket::metadata_sys::BucketMetadataSys;
 use crate::bucket::replication::{DynReplicationPool, ReplicationStats};
 use crate::disk::DiskStore;
-use crate::disk::multipart_source::ProofVerificationContext;
 use crate::layout::endpoints::{EndpointServerPools, SetupType};
 use crate::object_api::ObjectEncryptionResolver;
 use crate::services::event_notification::EventNotifier;
@@ -223,8 +222,6 @@ pub struct InstanceContext {
    /// Write-once: storage startup publishes the server pools exactly once.
    /// Replaces the process-global endpoints static.
    endpoints: OnceLock<EndpointServerPools>,
-    /// Only a complete validated topology may enable native local proof origin.
-    multipart_proof_topology: OnceLock<([u8; 32], ProofVerificationContext)>,
    /// This instance's tier configuration manager (Phase 5 Slice 7, backlog#939).
    ///
    /// Lazily materialized on first access so `InstanceContext::new()` stays
@@ -366,7 +363,6 @@ impl InstanceContext {
            region: OnceLock::new(),
            deployment_id: OnceLock::new(),
            endpoints: OnceLock::new(),
-            multipart_proof_topology: OnceLock::new(),
            tier_config_mgr: OnceLock::new(),
            event_notifier: OnceLock::new(),
            expiry_state: OnceLock::new(),
@@ -812,44 +808,20 @@ impl InstanceContext {
        self.endpoints.get().cloned()
    }

-    /// Keep one authority identity across complete local registry reinitializations.
-    /// Changing the instance or crossing the local/RPC mode boundary is forbidden.
-    pub(crate) fn bind_multipart_proof_topology(
-        &self,
-        endpoints: &EndpointServerPools,
-    ) -> crate::disk::error::Result<ProofVerificationContext> {
-        // Registry vectors are indexed by pool_idx. Validate every index before
-        // adding endpoint permissions or allowing a caller to clear the registry.
-        if endpoints.as_ref().iter().enumerate().any(|(pool, entry)| {
-            entry
-                .endpoints
-                .as_ref()
-                .iter()
-                .any(|endpoint| usize::try_from(endpoint.pool_idx).ok() != Some(pool))
-        }) {
-            return Err(crate::disk::error::DiskError::InconsistentDisk);
-        }
-        let (identity, authority) = ProofVerificationContext::for_topology(endpoints)?;
-        let stored = self.multipart_proof_topology.get_or_init(|| (identity, authority.clone()));
-        if stored.0 != identity {
-            stored.1.register_topology(&authority)?;
-        }
-        Ok(stored.1.clone())
-    }
-
-    pub(crate) fn multipart_proof_verification_context(&self) -> ProofVerificationContext {
-        self.multipart_proof_topology
-            .get()
-            .map(|(_, authority)| authority.clone())
-            .unwrap_or_default()
-    }
-
    /// This instance's tier configuration manager, materializing it on first
    /// access. Shared for the lifetime of the instance.
    pub fn tier_config_mgr(&self) -> Arc<RwLock<TierConfigMgr>> {
        self.tier_config_mgr.get_or_init(TierConfigMgr::new).clone()
    }

+    #[cfg(test)]
+    pub(crate) fn set_test_tier_config_mgr(&self, manager: Arc<RwLock<TierConfigMgr>>) {
+        assert!(
+            self.tier_config_mgr.set(manager).is_ok(),
+            "test tier manager must be installed before use"
+        );
+    }
+
    /// This instance's event notifier, materializing it on first access.
    /// Shared for the lifetime of the instance.
    pub fn event_notifier(&self) -> Arc<RwLock<EventNotifier>> {
@@ -1740,132 +1712,3 @@ mod tests {
        assert!(b.background_cancel_token().is_none());
    }
 }
-
-#[cfg(test)]
-mod multipart_instance_authority_tests {
-    use super::*;
-    use crate::layout::endpoint::Endpoint;
-    use crate::layout::endpoints::PoolEndpoints;
-
-    fn local_topology(root: &str) -> EndpointServerPools {
-        let mut endpoint = Endpoint::try_from(root).expect("local endpoint should parse");
-        endpoint.set_pool_index(0);
-        endpoint.set_set_index(0);
-        endpoint.set_disk_index(0);
-        EndpointServerPools(vec![PoolEndpoints {
-            legacy: false,
-            set_count: 1,
-            drives_per_set: 1,
-            endpoints: vec![endpoint].into(),
-            cmd_line: String::new(),
-            platform: String::new(),
-        }])
-    }
-
-    #[test]
-    fn multipart_instance_authority_is_explicit_stable_across_local_topologies() {
-        let ctx = InstanceContext::new();
-        assert!(matches!(ctx.multipart_proof_verification_context(), ProofVerificationContext::RpcOnly));
-        let topology = local_topology("/tmp/multipart-instance-a");
-        let first = ctx
-            .bind_multipart_proof_topology(&topology)
-            .expect("complete local topology should bind");
-        let again = ctx
-            .bind_multipart_proof_topology(&topology)
-            .expect("reopening the same topology should retain authority");
-        assert!(first.same_authority(&again));
-        assert!(first.same_authority(&ctx.multipart_proof_verification_context()));
-        let replacement = local_topology("/tmp/multipart-instance-b");
-        let extended = ctx
-            .bind_multipart_proof_topology(&replacement)
-            .expect("a complete local reinitialization should retain the native owner");
-        assert!(first.same_authority(&extended));
-        first.validate_endpoint(&topology.0[0].endpoints.as_ref()[0]).unwrap();
-        first.validate_endpoint(&replacement.0[0].endpoints.as_ref()[0]).unwrap();
-        assert!(first.same_authority(&ctx.multipart_proof_verification_context()));
-        let independent = InstanceContext::new().bind_multipart_proof_topology(&topology).unwrap();
-        assert!(!first.same_authority(&independent));
-    }
-
-    #[test]
-    fn multipart_distributed_instance_never_becomes_local_after_reinitialization() {
-        let ctx = InstanceContext::new();
-        let mut topology = local_topology("/tmp/multipart-remote-instance");
-        topology.0[0].endpoints.as_mut()[0].is_local = false;
-        assert!(matches!(
-            ctx.bind_multipart_proof_topology(&topology).unwrap(),
-            ProofVerificationContext::RpcOnly
-        ));
-        topology.0[0].endpoints.as_mut()[0].is_local = true;
-        assert!(ctx.bind_multipart_proof_topology(&topology).is_err());
-        assert!(matches!(ctx.multipart_proof_verification_context(), ProofVerificationContext::RpcOnly));
-    }
-
-    #[test]
-    fn multipart_parallel_topology_bind_retains_one_instance_authority() {
-        let ctx = Arc::new(InstanceContext::new());
-        let topologies = (0..4)
-            .map(|slot| local_topology(&format!("/tmp/multipart-parallel-instance-{slot}")))
-            .collect::<Vec<_>>();
-        let authorities = std::thread::scope(|scope| {
-            let mut tasks = Vec::with_capacity(topologies.len());
-            for topology in &topologies {
-                let ctx = ctx.clone();
-                tasks.push(scope.spawn(move || ctx.bind_multipart_proof_topology(topology).unwrap()));
-            }
-            tasks.into_iter().map(|task| task.join().unwrap()).collect::<Vec<_>>()
-        });
-        assert!(authorities.iter().all(|authority| authority.same_authority(&authorities[0])));
-        for topology in topologies {
-            authorities[0]
-                .validate_endpoint(&topology.0[0].endpoints.as_ref()[0])
-                .unwrap();
-        }
-    }
-    #[test]
-    fn multipart_topology_registration_rejects_invalid_indices_and_mode_switch_without_granting_endpoints() {
-        let ctx = InstanceContext::new();
-        let original = local_topology("/tmp/multipart-original-registry");
-        let first = ctx.bind_multipart_proof_topology(&original).unwrap();
-        let candidate = local_topology("/tmp/multipart-unregistered-candidate");
-        let mut outside = candidate.clone();
-        outside.0[0].endpoints.as_mut()[0].set_pool_index(1);
-        assert!(
-            ctx.bind_multipart_proof_topology(&outside).is_err(),
-            "one pool cannot address registry slot one"
-        );
-        assert!(first.validate_endpoint(&outside.0[0].endpoints.as_ref()[0]).is_err());
-        let fresh = InstanceContext::new();
-        assert!(fresh.bind_multipart_proof_topology(&outside).is_err());
-        assert!(
-            fresh.multipart_proof_topology.get().is_none(),
-            "invalid initial registration must have no authority effect"
-        );
-
-        let mut sparse = candidate.clone();
-        let mut second = local_topology("/tmp/multipart-unregistered-second").0.remove(0);
-        second.endpoints.as_mut()[0].set_pool_index(2);
-        sparse.0.push(second);
-        assert!(ctx.bind_multipart_proof_topology(&sparse).is_err());
-        assert!(
-            first.validate_endpoint(&candidate.0[0].endpoints.as_ref()[0]).is_err(),
-            "a valid early pool cannot be partially granted"
-        );
-        let mut mixed = candidate.clone();
-        let mut second = local_topology("/tmp/multipart-remote-later-pool").0.remove(0);
-        second.endpoints.as_mut()[0].set_pool_index(1);
-        second.endpoints.as_mut()[0].is_local = false;
-        mixed.0.push(second);
-        assert!(
-            ctx.bind_multipart_proof_topology(&mixed).is_err(),
-            "local authority cannot switch mode for a remote later pool"
-        );
-        assert!(first.validate_endpoint(&candidate.0[0].endpoints.as_ref()[0]).is_err());
-        let mut incomplete = candidate.clone();
-        incomplete.0[0].drives_per_set = 2;
-        assert!(ctx.bind_multipart_proof_topology(&incomplete).is_err());
-        assert!(first.validate_endpoint(&candidate.0[0].endpoints.as_ref()[0]).is_err());
-        assert!(first.same_authority(&ctx.multipart_proof_verification_context()));
-        first.validate_endpoint(&original.0[0].endpoints.as_ref()[0]).unwrap();
-    }
-}
@@ -467,24 +467,6 @@ pub(crate) async fn reconcile_local_disk_ids(
 }

 pub(crate) async fn quarantine_local_disks(instance_ctx: &InstanceContext, endpoints: &[Endpoint]) -> Result<()> {
-    quarantine_local_disks_preserving_bootstrap_routes(instance_ctx, endpoints, &[]).await
-}
-
-/// Keep an already registered path available to its in-flight format writer.
-/// All runtime voting slots are still cleared; no route is admitted or revived.
-/// Only the format loader's explicit local unformatted observations may use it.
-pub(crate) async fn quarantine_local_disks_preserving_bootstrap_routes(
-    instance_ctx: &InstanceContext,
-    endpoints: &[Endpoint],
-    unformatted_bootstrap_routes: &[Endpoint],
-) -> Result<()> {
-    if unformatted_bootstrap_routes
-        .iter()
-        .any(|route| !route.is_local || !endpoints.contains(route))
-    {
-        return Err(Error::CorruptedFormat);
-    }
-    let bootstrap_routes = unformatted_bootstrap_routes.iter().collect::<HashSet<_>>();
    let slots = endpoints
        .iter()
        .map(|endpoint| {
@@ -499,9 +481,7 @@ pub(crate) async fn quarantine_local_disks_preserving_bootstrap_routes(
    let local_disk_map = instance_ctx.local_disk_map();
    let mut local_disks = local_disk_map.write().await;
    for endpoint in endpoints {
-        if !bootstrap_routes.contains(endpoint) {
-            local_disks.insert(endpoint.to_string(), None);
-        }
+        local_disks.insert(endpoint.to_string(), None);
    }
    drop(local_disks);

@@ -572,7 +552,6 @@ pub(crate) async fn initialize_local_disk_maps(
    endpoint_pools: EndpointServerPools,
    opt: &DiskOption,
 ) -> Result<()> {
-    let multipart_authority = instance_ctx.bind_multipart_proof_topology(&endpoint_pools)?;
    // Every caller passes the FULL topology, so (re)initialization must replace
    // any previous registration wholesale: appending would leave the pool/set
    // vectors sized for a stale topology and panic on wider disk indices (seen
@@ -600,9 +579,6 @@ pub(crate) async fn initialize_local_disk_maps(
            }

            let disk = new_disk(ep, opt).await?;
-            if let crate::disk::Disk::Local(wrapper) = disk.as_ref() {
-                wrapper.get_disk().bind_multipart_proof_authority(&multipart_authority)?;
-            }
            let path = disk.endpoint().to_string();
            let pool_idx = usize::try_from(ep.pool_idx).map_err(|err| {
                crate::error::Error::other(format!("store init failed to convert pool index `{}`: {err}", ep.pool_idx))
@@ -645,7 +621,7 @@ mod tests {
        notify_scanner_dirty_usage_mutation, reconcile_local_disk_ids, replace_local_disk_id, set_local_node_name,
        set_scanner_dirty_usage_mutation_observer,
    };
-    use crate::disk::{DiskAPI, endpoint::Endpoint};
+    use crate::disk::endpoint::Endpoint;
    use rustfs_lock::{LocalClient, LockClient};
    use std::{
        collections::HashMap,
@@ -849,11 +825,9 @@ mod tests {
        super::initialize_local_disk_maps(&instance_ctx, build_pools("narrow", 2), &opt)
            .await
            .expect("narrow topology should initialize");
-        let first_authority = instance_ctx.multipart_proof_verification_context();
        super::initialize_local_disk_maps(&instance_ctx, build_pools("wide", 4), &opt)
            .await
            .expect("re-initializing with a wider topology must not panic or fail");
-        assert!(first_authority.same_authority(&instance_ctx.multipart_proof_verification_context()));

        let set_drives = instance_ctx.local_disk_set_drives();
        let set_drives = set_drives.read().await;
@@ -874,59 +848,4 @@ mod tests {
            disk_map.keys().collect::<Vec<_>>()
        );
    }
-    #[tokio::test]
-    async fn multipart_invalid_registry_pool_index_has_no_authority_or_registry_effect() {
-        use crate::disk::DiskOption;
-        use crate::layout::endpoints::{EndpointServerPools, PoolEndpoints};
-        let directory = tempfile::tempdir().unwrap();
-        let make_topology = |label: &str, pool_index: usize| {
-            let path = directory.path().join(label);
-            std::fs::create_dir_all(&path).unwrap();
-            let mut endpoint = Endpoint::try_from(path.to_str().unwrap()).unwrap();
-            endpoint.set_pool_index(pool_index);
-            endpoint.set_set_index(0);
-            endpoint.set_disk_index(0);
-            EndpointServerPools(vec![PoolEndpoints {
-                legacy: false,
-                set_count: 1,
-                drives_per_set: 1,
-                endpoints: vec![endpoint].into(),
-                cmd_line: label.into(),
-                platform: "test".into(),
-            }])
-        };
-        let ctx = Arc::new(crate::runtime::instance::InstanceContext::new());
-        let valid = make_topology("registered", 0);
-        let options = DiskOption {
-            cleanup: false,
-            health_check: false,
-        };
-        super::initialize_local_disk_maps(&ctx, valid.clone(), &options)
-            .await
-            .unwrap();
-        let authority = ctx.multipart_proof_verification_context();
-        let before = ctx.local_disk_map().read().await.clone();
-        let invalid = make_topology("invalid", 1);
-        let endpoint = &invalid.0[0].endpoints.as_ref()[0];
-        assert!(
-            super::initialize_local_disk_maps(&ctx, invalid.clone(), &options)
-                .await
-                .is_err()
-        );
-        assert!(authority.same_authority(&ctx.multipart_proof_verification_context()));
-        assert!(authority.validate_endpoint(endpoint).is_err());
-        assert!(
-            !std::path::Path::new(&endpoint.get_file_path()).join(".rustfs.sys").exists(),
-            "invalid registration must fail before disk initialization"
-        );
-        let after = ctx.local_disk_map().read().await.clone();
-        assert_eq!(before.len(), after.len());
-        for (path, disk) in before {
-            assert!(Arc::ptr_eq(disk.as_ref().unwrap(), after.get(&path).unwrap().as_ref().unwrap()));
-        }
-        let drives = ctx.local_disk_set_drives();
-        let drives = drives.read().await;
-        assert_eq!((drives.len(), drives[0].len(), drives[0][0].len()), (1, 1, 1));
-        assert_eq!(drives[0][0][0].as_ref().unwrap().endpoint(), valid.0[0].endpoints.as_ref()[0]);
-    }
 }
@@ -61,7 +61,6 @@ const TIER_CONFIG_RELOAD_RETRY_CAP: Duration = Duration::from_secs(5);
 const REMOTE_VERSION_STATE_PROBE_INTERVAL: Duration = Duration::from_secs(10);
 const REMOTE_VERSION_STATE_PROBE_TIMEOUT: Duration = Duration::from_secs(5);
 const REMOTE_VERSION_STATE_PROOF_TTL: Duration = Duration::from_secs(30);
-const MRF_LIFECYCLE_WRITER_FORMAT_VERSION: u8 = 2;
 /// Fallback poll cadence while startup has not yet published the notification
 /// system. IAM finalization starts the probe before `init_notification_runtime`
 /// runs, so the first pass always fails closed; waiting a full probe interval
@@ -308,7 +307,6 @@ struct FleetCapabilityProofState {
    proof: Option<FleetCapabilityProof>,
    draining_generation: Option<Arc<FleetCapabilityProofGeneration>>,
    topology_conflict: bool,
-    published: Arc<Notify>,
 }

 #[derive(Clone, PartialEq, Eq)]
@@ -359,8 +357,6 @@ static DECOMMISSION_TARGET_FENCE_FLEET_PROOF: OnceLock<std::sync::RwLock<FleetCa
 static LEGACY_TRANSITION_STATE_RECONCILE_FLEET_PROOF: OnceLock<std::sync::RwLock<FleetCapabilityProofState>> = OnceLock::new();
 static ILM_RECOVERY_EXPORT_FLEET_PROOF: OnceLock<std::sync::RwLock<FleetCapabilityProofState>> = OnceLock::new();
 static TRANSITION_TRANSACTION_COMPACTION_FLEET_PROOF: OnceLock<std::sync::RwLock<FleetCapabilityProofState>> = OnceLock::new();
-static MRF_LIFECYCLE_WRITER_FLEET_PROOF: OnceLock<std::sync::RwLock<FleetCapabilityProofState>> = OnceLock::new();
-static MRF_LIFECYCLE_READER_LOCAL_PROCESS_EPOCH: LazyLock<Uuid> = LazyLock::new(Uuid::new_v4);
 static REMOTE_VERSION_STATE_PROBE_TOPOLOGY: OnceLock<String> = OnceLock::new();
 /// Signalled once `GLOBAL_NOTIFICATION_SYS` is published so the fleet probe can
 /// run its first real pass without waiting for the bootstrap poll.
@@ -395,7 +391,7 @@ fn transition_transaction_compaction_fleet_proof_slot() -> &'static std::sync::R
    TRANSITION_TRANSACTION_COMPACTION_FLEET_PROOF.get_or_init(|| std::sync::RwLock::new(FleetCapabilityProofState::default()))
 }

-fn all_fleet_capability_proof_slots() -> [&'static std::sync::RwLock<FleetCapabilityProofState>; 8] {
+fn all_fleet_capability_proof_slots() -> [&'static std::sync::RwLock<FleetCapabilityProofState>; 7] {
    [
        remote_version_state_fleet_proof_slot(),
        cross_pool_fence_fleet_proof_slot(),
@@ -404,7 +400,6 @@ fn all_fleet_capability_proof_slots() -> [&'static std::sync::RwLock<FleetCapabi
        legacy_transition_state_reconcile_fleet_proof_slot(),
        ilm_recovery_export_fleet_proof_slot(),
        transition_transaction_compaction_fleet_proof_slot(),
-        mrf_lifecycle_writer_fleet_proof_slot(),
    ]
 }

@@ -456,7 +451,6 @@ fn publish_fleet_capability_probe_result(
                .filter(|proof| proof.topology_fingerprint == topology_fingerprint && proof.peer_epochs.as_ref() == &peer_epochs)
            {
                current.expires_at = observed_at + REMOTE_VERSION_STATE_PROOF_TTL;
-                state.published.notify_waiters();
                return None;
            }

@@ -483,7 +477,6 @@ fn publish_fleet_capability_probe_result(
                Arc::new(peer_epochs),
                observed_at + REMOTE_VERSION_STATE_PROOF_TTL,
            ));
-            state.published.notify_waiters();
            None
        }
        Err(err) => {
@@ -565,43 +558,6 @@ pub fn acquire_cross_pool_fence_fleet_proof() -> Option<CrossPoolFenceFleetProof
    acquire_fleet_capability_proof_from(&state, expected_topology, Instant::now()).map(CrossPoolFenceFleetProofToken)
 }

-async fn wait_for_fleet_capability_proof(
-    rx: &CancellationToken,
-    published: &Notify,
-    mut available: impl FnMut() -> bool,
-) -> bool {
-    loop {
-        let publication = published.notified();
-        tokio::pin!(publication);
-        // Register before checking authority: a publication between the check
-        // and the await must wake us even when no further probe is needed.
-        publication.as_mut().enable();
-        if rx.is_cancelled() {
-            return false;
-        }
-        if available() {
-            return true;
-        }
-        tokio::select! {
-            biased;
-            _ = rx.cancelled() => return false,
-            _ = publication => {}
-        }
-    }
-}
-
-/// Wait only for readiness; callers must reacquire and validate authority at
-/// their operation boundary because a published proof may already be revoked.
-pub(crate) async fn wait_for_cross_pool_fence_fleet_proof(rx: CancellationToken) -> bool {
-    let published = Arc::clone(
-        &cross_pool_fence_fleet_proof_slot()
-            .read()
-            .unwrap_or_else(std::sync::PoisonError::into_inner)
-            .published,
-    );
-    wait_for_fleet_capability_proof(&rx, &published, || acquire_cross_pool_fence_fleet_proof().is_some()).await
-}
-
 /// Startup layout identity remains available when peers or the live fleet proof are unavailable.
 pub fn configured_fleet_topology_fingerprint() -> Option<&'static str> {
    let state = cross_pool_fence_fleet_proof_slot()
@@ -1330,161 +1286,6 @@ fn insert_remote_version_state_peer(peer_epochs: &mut BTreeMap<String, Uuid>, pe
    Ok(())
 }

-/// Authority for one MRF lifecycle format transition. The permit remains
-/// owned by the publisher until every admitted disk operation has finished.
-pub struct MrfLifecycleWriterFleetProofToken {
-    token: FleetCapabilityProofToken,
-    _permit: FleetCapabilityProofPermit,
-    local_reader_max_format: u8,
-    expires_at: Instant,
-}
-
-tokio::task_local! {
-    static MRF_LIFECYCLE_PUBLICATION: Arc<MrfLifecycleWriterFleetProofToken>;
-}
-
-/// Carry one publication's authority into local disk executors. Native CAS
-/// workers retain the same permit after an async timeout or cancellation.
-pub async fn with_mrf_lifecycle_writer_fleet_proof<F: std::future::Future>(
-    proof: Arc<MrfLifecycleWriterFleetProofToken>,
-    future: F,
-) -> F::Output {
-    MRF_LIFECYCLE_PUBLICATION.scope(proof, future).await
-}
-
-pub(crate) fn current_mrf_lifecycle_publication() -> Option<Arc<MrfLifecycleWriterFleetProofToken>> {
-    MRF_LIFECYCLE_PUBLICATION.try_with(Arc::clone).ok()
-}
-
-pub fn mrf_lifecycle_writer_fleet_proof_current(proof: &MrfLifecycleWriterFleetProofToken) -> bool {
-    let Some(topology) = configured_fleet_topology_fingerprint() else {
-        return false;
-    };
-    let state = mrf_lifecycle_writer_fleet_proof_slot()
-        .read()
-        .unwrap_or_else(std::sync::PoisonError::into_inner);
-    mrf_lifecycle_writer_fleet_proof_matches_at(&state, proof, topology, Instant::now())
-}
-
-fn mrf_lifecycle_writer_fleet_proof_slot() -> &'static std::sync::RwLock<FleetCapabilityProofState> {
-    MRF_LIFECYCLE_WRITER_FLEET_PROOF.get_or_init(|| std::sync::RwLock::new(FleetCapabilityProofState::default()))
-}
-
-pub fn mrf_lifecycle_reader_local_process_epoch() -> Uuid {
-    *MRF_LIFECYCLE_READER_LOCAL_PROCESS_EPOCH
-}
-
-/// The caller supplies its decoder's actual maximum, not a deployment setting.
-/// Operator opt-in and rollback qualification remain the caller's responsibility.
-pub async fn acquire_mrf_lifecycle_writer_fleet_proof(local_reader_max_format: u8) -> Option<MrfLifecycleWriterFleetProofToken> {
-    let expected_topology = configured_fleet_topology_fingerprint()?;
-    let observed_at = Instant::now();
-    let observed = observe_mrf_lifecycle_reader_fleet(expected_topology, local_reader_max_format).await;
-    if publish_fleet_capability_probe_result(mrf_lifecycle_writer_fleet_proof_slot(), expected_topology, observed, observed_at)
-        .is_some()
-    {
-        return None;
-    }
-    let state = mrf_lifecycle_writer_fleet_proof_slot()
-        .read()
-        .unwrap_or_else(std::sync::PoisonError::into_inner);
-    acquire_mrf_lifecycle_writer_fleet_proof_from(&state, expected_topology, local_reader_max_format, Instant::now())
-}
-
-fn acquire_mrf_lifecycle_writer_fleet_proof_from(
-    state: &FleetCapabilityProofState,
-    expected_topology: &str,
-    local_reader_max_format: u8,
-    now: Instant,
-) -> Option<MrfLifecycleWriterFleetProofToken> {
-    if local_reader_max_format < MRF_LIFECYCLE_WRITER_FORMAT_VERSION {
-        return None;
-    }
-    let token = acquire_fleet_capability_proof_from(state, expected_topology, now)?;
-    let permit = state.proof.as_ref()?.generation.try_acquire()?;
-    Some(MrfLifecycleWriterFleetProofToken {
-        token,
-        _permit: permit,
-        local_reader_max_format,
-        expires_at: state.proof.as_ref()?.expires_at,
-    })
-}
-
-fn mrf_lifecycle_writer_fleet_proof_matches_at(
-    state: &FleetCapabilityProofState,
-    proof: &MrfLifecycleWriterFleetProofToken,
-    expected_topology: &str,
-    now: Instant,
-) -> bool {
-    now < proof.expires_at
-        && proof._permit.generation.is_accepting()
-        && fleet_capability_proof_matches_at(state, &proof.token, expected_topology, now)
-        && state
-            .proof
-            .as_ref()
-            .is_some_and(|current| Arc::ptr_eq(&current.generation, &proof._permit.generation))
-}
-
-/// Reobserve every member before a manifest commit. No proof-slot lock is held
-/// during network I/O, and any failed or changed observation revokes admission.
-pub async fn mrf_lifecycle_writer_fleet_proof_matches(proof: &MrfLifecycleWriterFleetProofToken) -> bool {
-    let Some(expected_topology) = configured_fleet_topology_fingerprint() else {
-        return false;
-    };
-    {
-        let state = mrf_lifecycle_writer_fleet_proof_slot()
-            .read()
-            .unwrap_or_else(std::sync::PoisonError::into_inner);
-        if !mrf_lifecycle_writer_fleet_proof_matches_at(&state, proof, expected_topology, Instant::now()) {
-            return false;
-        }
-    }
-    let observed = observe_mrf_lifecycle_reader_fleet(expected_topology, proof.local_reader_max_format).await;
-    let mut state = mrf_lifecycle_writer_fleet_proof_slot()
-        .write()
-        .unwrap_or_else(std::sync::PoisonError::into_inner);
-    if !observed.is_ok_and(|observed| observed == *proof.token.peer_epochs) {
-        revoke_fleet_capability_proof_state(&mut state);
-        return false;
-    }
-    mrf_lifecycle_writer_fleet_proof_matches_at(&state, proof, expected_topology, Instant::now())
-}
-
-async fn observe_mrf_lifecycle_reader_fleet(
-    topology_fingerprint: &str,
-    local_reader_max_format: u8,
-) -> Result<BTreeMap<String, Uuid>> {
-    let notification_sys =
-        get_global_notification_sys().ok_or_else(|| Error::other("MRF lifecycle reader fleet is not initialized"))?;
-    timeout(
-        REMOTE_VERSION_STATE_PROBE_TIMEOUT,
-        notification_sys.probe_mrf_lifecycle_reader_fleet(topology_fingerprint, local_reader_max_format),
-    )
-    .await
-    .map_err(|_| Error::other("MRF lifecycle reader fleet probe timed out"))?
-}
-
-fn mrf_lifecycle_reader_epoch_map(
-    expected_remote_members: &[String],
-    local_member: String,
-    local_reader_max_format: u8,
-    remote_readers: Vec<(String, u8, Uuid)>,
-) -> Result<BTreeMap<String, Uuid>> {
-    if local_member.trim().is_empty() || local_reader_max_format < MRF_LIFECYCLE_WRITER_FORMAT_VERSION {
-        return Err(Error::other("MRF lifecycle local reader does not support the writer format"));
-    }
-    let mut peer_epochs = BTreeMap::new();
-    insert_remote_version_state_peer(&mut peer_epochs, local_member.clone(), mrf_lifecycle_reader_local_process_epoch())?;
-    for (member, maximum_format, epoch) in remote_readers {
-        if maximum_format < MRF_LIFECYCLE_WRITER_FORMAT_VERSION {
-            return Err(Error::other("MRF lifecycle peer reader does not support the writer format"));
-        }
-        insert_remote_version_state_peer(&mut peer_epochs, member, epoch)?;
-    }
-    validate_capability_fleet_members(expected_remote_members, &local_member, &peer_epochs)?;
-    Ok(peer_epochs)
-}
-
 pub fn start_remote_version_state_fleet_probe(topology_fingerprint: String) {
    if REMOTE_VERSION_STATE_PROBE_TOPOLOGY.set(topology_fingerprint.clone()).is_err() {
        if REMOTE_VERSION_STATE_PROBE_TOPOLOGY.get() != Some(&topology_fingerprint) {
@@ -1805,25 +1606,6 @@ impl NotificationSys {
        Ok((peer_epochs, minimum_version))
    }

-    async fn probe_mrf_lifecycle_reader_fleet(
-        &self,
-        topology_fingerprint: &str,
-        local_reader_max_format: u8,
-    ) -> Result<BTreeMap<String, Uuid>> {
-        if self.peer_clients.len() != self.peer_topology_hosts.len() {
-            return Err(Error::other("MRF lifecycle reader fleet membership is incomplete"));
-        }
-        let local_member = runtime_sources::local_node_name().await;
-        let probes = self.peer_clients.iter().map(|client| async {
-            let client = client
-                .as_ref()
-                .ok_or_else(|| Error::other("MRF lifecycle reader peer is unreachable"))?;
-            client.probe_mrf_lifecycle_reader(topology_fingerprint.to_string()).await
-        });
-        let readers = join_all(probes).await.into_iter().collect::<Result<Vec<_>>>()?;
-        mrf_lifecycle_reader_epoch_map(&self.peer_topology_hosts, local_member, local_reader_max_format, readers)
-    }
-
    async fn probe_ilm_recovery_export_fleet(&self, topology_fingerprint: &str) -> Result<BTreeMap<String, Uuid>> {
        if self.peer_clients.len() != self.peer_topology_hosts.len() {
            return Err(Error::other("ILM recovery export capability fleet membership is incomplete"));
@@ -1844,12 +1626,12 @@ impl NotificationSys {
            let (peer, epoch) = result?;
            insert_remote_version_state_peer(&mut peer_epochs, peer, epoch)?;
        }
-        validate_capability_fleet_members(&self.peer_topology_hosts, &local_member, &peer_epochs)?;
+        validate_ilm_recovery_export_members(&self.peer_topology_hosts, &local_member, &peer_epochs)?;
        Ok(peer_epochs)
    }
 }

-fn validate_capability_fleet_members(
+fn validate_ilm_recovery_export_members(
    expected_remote_members: &[String],
    local_member: &str,
    observed: &BTreeMap<String, Uuid>,
@@ -1860,7 +1642,7 @@ fn validate_capability_fleet_members(
        .chain(std::iter::once(local_member.to_string()))
        .collect::<BTreeSet<_>>();
    if expected.len() != expected_remote_members.len().saturating_add(1) || observed.keys().ne(expected.iter()) {
-        return Err(Error::other("fleet capability membership does not match topology"));
+        return Err(Error::other("ILM recovery export capability fleet membership does not match topology"));
    }
    Ok(())
 }
@@ -4330,228 +4112,6 @@ mod tests {
        );
    }

-    #[test]
-    fn mrf_lifecycle_writer_requires_every_reader_and_the_local_decoder() {
-        let expected = vec!["peer-a".to_owned(), "peer-b".to_owned()];
-        let a = Uuid::new_v4();
-        let b = Uuid::new_v4();
-        let readers = vec![("peer-a".to_owned(), 2, a), ("peer-b".to_owned(), 3, b)];
-        let observed = mrf_lifecycle_reader_epoch_map(&expected, "local".to_owned(), 2, readers.clone())
-            .expect("all members have compatible readers");
-        assert_eq!(observed.len(), 3);
-        assert_eq!(observed["local"], mrf_lifecycle_reader_local_process_epoch());
-        assert_eq!(observed["peer-a"], a);
-        for version in [0, 1] {
-            assert!(mrf_lifecycle_reader_epoch_map(&expected, "local".to_owned(), version, readers.clone()).is_err());
-            let mut old_peer = readers.clone();
-            old_peer[0].1 = version;
-            assert!(mrf_lifecycle_reader_epoch_map(&expected, "local".to_owned(), 2, old_peer).is_err());
-        }
-        for invalid in [
-            vec![readers[0].clone()],
-            vec![("unknown".to_owned(), 2, a), readers[1].clone()],
-            vec![readers[0].clone(), ("peer-a".to_owned(), 2, b)],
-            vec![readers[0].clone(), ("peer-b".to_owned(), 2, a)],
-            vec![readers[0].clone(), ("peer-b".to_owned(), 2, Uuid::nil())],
-            vec![
-                readers[0].clone(),
-                ("peer-b".to_owned(), 2, mrf_lifecycle_reader_local_process_epoch()),
-            ],
-        ] {
-            assert!(mrf_lifecycle_reader_epoch_map(&expected, "local".to_owned(), 2, invalid).is_err());
-        }
-        assert!(mrf_lifecycle_reader_epoch_map(&expected, "".to_owned(), 2, readers).is_err());
-        let single = mrf_lifecycle_reader_epoch_map(&[], "local".to_owned(), 2, Vec::new())
-            .expect("a single node must still prove its local decoder and epoch");
-        assert_eq!(single.len(), 1);
-    }
-
-    #[test]
-    fn mrf_lifecycle_writer_rejects_expired_failed_and_conflicting_proofs() {
-        let slot = std::sync::RwLock::new(FleetCapabilityProofState::default());
-        let now = Instant::now();
-        let peers = BTreeMap::from([("local".to_owned(), Uuid::new_v4())]);
-        assert!(publish_fleet_capability_probe_result(&slot, "topology", Ok(peers), now).is_none());
-        let token = {
-            let state = slot.read().expect("proof state");
-            assert!(acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "topology", 1, now).is_none());
-            assert!(acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "other-topology", 2, now).is_none());
-            let token = acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "topology", 2, now)
-                .expect("compatible current observation");
-            assert!(mrf_lifecycle_writer_fleet_proof_matches_at(&state, &token, "topology", now));
-            assert!(!mrf_lifecycle_writer_fleet_proof_matches_at(
-                &state,
-                &token,
-                "topology",
-                now + REMOTE_VERSION_STATE_PROOF_TTL,
-            ));
-            token
-        };
-        assert!(publish_fleet_capability_probe_result(&slot, "topology", Err(Error::other("old reader")), now).is_some());
-        let state = slot.read().expect("revoked proof state");
-        assert!(!mrf_lifecycle_writer_fleet_proof_matches_at(&state, &token, "topology", now));
-        assert!(acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "topology", 2, now).is_none());
-        assert!(state.draining_generation.is_some());
-        drop(state);
-        drop(token);
-        mark_fleet_capability_topology_conflict(&slot);
-        let state = slot.read().expect("conflicting topology state");
-        assert!(acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "topology", 2, now).is_none());
-    }
-
-    #[test]
-    fn mrf_lifecycle_writer_refresh_cannot_extend_an_existing_publication() {
-        let slot = std::sync::RwLock::new(FleetCapabilityProofState::default());
-        let now = Instant::now();
-        let peers = BTreeMap::from([("local".to_owned(), Uuid::new_v4())]);
-        assert!(publish_fleet_capability_probe_result(&slot, "topology", Ok(peers.clone()), now).is_none());
-        let old = acquire_mrf_lifecycle_writer_fleet_proof_from(&slot.read().expect("proof state"), "topology", 2, now)
-            .expect("first publication");
-        let refreshed_at = now + REMOTE_VERSION_STATE_PROOF_TTL;
-        assert!(publish_fleet_capability_probe_result(&slot, "topology", Ok(peers), refreshed_at).is_none());
-        let state = slot.read().expect("refreshed proof state");
-        let current = acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "topology", 2, refreshed_at)
-            .expect("a new publication can use the fresh observation");
-        assert!(mrf_lifecycle_writer_fleet_proof_matches_at(&state, &current, "topology", refreshed_at));
-        assert!(!mrf_lifecycle_writer_fleet_proof_matches_at(&state, &old, "topology", refreshed_at));
-    }
-
-    #[test]
-    fn mrf_lifecycle_writer_restart_waits_for_the_previous_publication() {
-        let slot = std::sync::RwLock::new(FleetCapabilityProofState::default());
-        let now = Instant::now();
-        let peers = BTreeMap::from([("local".to_owned(), Uuid::new_v4())]);
-        assert!(publish_fleet_capability_probe_result(&slot, "topology", Ok(peers), now).is_none());
-        let token = acquire_mrf_lifecycle_writer_fleet_proof_from(&slot.read().expect("proof state"), "topology", 2, now)
-            .expect("first publication permit");
-        let restarted = BTreeMap::from([("local".to_owned(), Uuid::new_v4())]);
-        assert!(publish_fleet_capability_probe_result(&slot, "topology", Ok(restarted.clone()), now).is_some());
-        {
-            let state = slot.read().expect("draining proof state");
-            assert!(!mrf_lifecycle_writer_fleet_proof_matches_at(&state, &token, "topology", now));
-            assert!(acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "topology", 2, now).is_none());
-        }
-        drop(token);
-        assert!(publish_fleet_capability_probe_result(&slot, "topology", Ok(restarted.clone()), now).is_none());
-        let state = slot.read().expect("successor proof state");
-        let successor = acquire_mrf_lifecycle_writer_fleet_proof_from(&state, "topology", 2, now)
-            .expect("successor may be admitted after the old disk operations finish");
-        assert_eq!(*successor.token.peer_epochs, restarted);
-        assert!(mrf_lifecycle_writer_fleet_proof_matches_at(&state, &successor, "topology", now));
-    }
-
-    #[tokio::test]
-    async fn mrf_lifecycle_writer_probe_rejects_missing_or_unreachable_members() {
-        for peer_clients in [Vec::new(), vec![None]] {
-            let notification_sys = NotificationSys {
-                peer_clients,
-                all_peer_clients: vec![None],
-                peer_topology_hosts: vec!["peer-a".to_owned()],
-                peer_admin_caches: Vec::new(),
-                tier_config_reload_workers: Default::default(),
-            };
-            assert!(
-                notification_sys
-                    .probe_mrf_lifecycle_reader_fleet("topology", 2)
-                    .await
-                    .is_err()
-            );
-        }
-    }
-
-    #[cfg(unix)]
-    #[tokio::test]
-    #[serial_test::serial]
-    async fn mrf_lifecycle_writer_native_cas_retains_authority_after_timeout_or_cancellation() {
-        use crate::disk::os::prepared_publication_test_hooks as hooks;
-        use crate::disk::{RUSTFS_META_BUCKET, disk_store::LocalDiskWrapper, local::LocalDisk};
-        use crate::layout::endpoint::Endpoint;
-
-        temp_env::async_with_vars([(rustfs_config::ENV_DRIVE_MAX_TIMEOUT_DURATION, Some("60"))], async {
-            let topology = REMOTE_VERSION_STATE_PROBE_TOPOLOGY.get_or_init(|| "mrf-cas-test".to_owned());
-            let slot = mrf_lifecycle_writer_fleet_proof_slot();
-            for cancel_waiter in [true, false] {
-                let root = tempfile::tempdir().expect("isolated CAS fixture");
-                let endpoint = Endpoint::try_from(root.path().to_str().expect("fixture path")).expect("local endpoint");
-                let disk = Arc::new(LocalDisk::new(&endpoint, false).await.expect("local disk"));
-                let volume = disk.make_volume(RUSTFS_META_BUCKET).await;
-                assert!(
-                    matches!(volume, Ok(()) | Err(crate::disk::error::Error::VolumeExists)),
-                    "metadata volume: {volume:?}"
-                );
-                let relative = "mrf-authority";
-                let path = disk
-                    .get_object_path_for_io(RUSTFS_META_BUCKET, relative)
-                    .expect("native CAS publication path");
-                std::fs::write(&path, b"old").expect("old committed file");
-                let peers = BTreeMap::from([("local".to_owned(), Uuid::new_v4())]);
-                assert!(publish_fleet_capability_probe_result(slot, topology, Ok(peers), Instant::now()).is_none());
-                let proof = Arc::new(
-                    acquire_mrf_lifecycle_writer_fleet_proof_from(
-                        &slot.read().expect("proof state"),
-                        topology,
-                        2,
-                        Instant::now(),
-                    )
-                    .expect("publication permit"),
-                );
-                let weak = Arc::downgrade(&proof);
-                let (entered_tx, entered_rx) = tokio::sync::oneshot::channel();
-                let (release_tx, release_rx) = std::sync::mpsc::channel::<()>();
-                let _hook = hooks::install_at(hooks::Stage::Rename, &path, move || {
-                    let _ = entered_tx.send(());
-                    let _ = release_rx.recv();
-                });
-                let wrapper = LocalDiskWrapper::new(disk, false);
-                let mut write = Box::pin(with_mrf_lifecycle_writer_fleet_proof(
-                    proof,
-                    wrapper.compare_and_update_file(
-                        RUSTFS_META_BUCKET,
-                        relative,
-                        Some(Bytes::from_static(b"old")),
-                        Some(Bytes::from_static(b"new")),
-                    ),
-                ));
-                timeout(Duration::from_secs(10), async {
-                    tokio::select! {
-                        result = entered_rx => result.expect("native CAS reached publication"),
-                        result = write.as_mut() => panic!("CAS returned before publication: {result:?}"),
-                    }
-                })
-                .await
-                .expect("native CAS boundary");
-                if cancel_waiter {
-                    drop(write);
-                } else {
-                    tokio::time::pause();
-                    tokio::time::advance(Duration::from_secs(61)).await;
-                    tokio::time::resume();
-                    let error = timeout(Duration::from_secs(5), write)
-                        .await
-                        .expect("disk deadline is bounded")
-                        .expect_err("blocked CAS must time out");
-                    assert_eq!(error, crate::disk::error::Error::Timeout);
-                }
-                assert!(weak.upgrade().is_some(), "the native worker still owns the permit");
-                let restarted = BTreeMap::from([("local".to_owned(), Uuid::new_v4())]);
-                assert!(publish_fleet_capability_probe_result(slot, topology, Ok(restarted.clone()), Instant::now()).is_some());
-                assert_eq!(std::fs::read(&path).expect("old file retained while blocked"), b"old");
-                drop(release_tx);
-                timeout(Duration::from_secs(5), async {
-                    while weak.upgrade().is_some() {
-                        tokio::time::sleep(Duration::from_millis(5)).await;
-                    }
-                })
-                .await
-                .expect("native worker drains");
-                assert_eq!(std::fs::read(&path).expect("revoked writer cannot publish"), b"old");
-                assert!(publish_fleet_capability_probe_result(slot, topology, Ok(restarted), Instant::now()).is_none());
-                revoke_fleet_capability_proof(slot);
-            }
-        })
-        .await;
-    }
-
    #[test]
    fn remote_version_state_fleet_proof_rejects_stale_or_mismatched_membership() {
        let now = Instant::now();
@@ -4565,134 +4125,6 @@ mod tests {
        assert!(!fleet_capability_proof_valid_at(None, "topology-a", now));
    }

-    #[tokio::test(start_paused = true)]
-    async fn fleet_proof_wait_observes_publication_before_waiting() {
-        let slot = std::sync::RwLock::new(FleetCapabilityProofState::default());
-        assert!(publish_fleet_capability_probe_result(&slot, "topology-a", Ok(BTreeMap::new()), Instant::now()).is_none());
-        let published = Arc::clone(&slot.read().expect("proof state should be readable").published);
-        let started_at = tokio::time::Instant::now();
-        assert!(
-            wait_for_fleet_capability_proof(&CancellationToken::new(), &published, || {
-                acquire_fleet_capability_proof_from(
-                    &slot.read().expect("proof state should be readable"),
-                    "topology-a",
-                    Instant::now(),
-                )
-                .is_some()
-            })
-            .await
-        );
-        assert_eq!(tokio::time::Instant::now(), started_at);
-    }
-
-    #[tokio::test(start_paused = true)]
-    async fn fleet_proof_wait_cannot_lose_publication_between_registration_and_check() {
-        let slot = std::sync::RwLock::new(FleetCapabilityProofState::default());
-        let published = Arc::clone(&slot.read().expect("proof state should be readable").published);
-        let mut checks = 0;
-        let ready = timeout(
-            Duration::from_secs(1),
-            wait_for_fleet_capability_proof(&CancellationToken::new(), &published, || {
-                checks += 1;
-                if checks == 1 {
-                    // The authority check saw no proof immediately before the
-                    // publisher ran. There will be no second publication.
-                    assert!(
-                        publish_fleet_capability_probe_result(&slot, "topology-a", Ok(BTreeMap::new()), Instant::now()).is_none()
-                    );
-                    return false;
-                }
-                acquire_fleet_capability_proof_from(
-                    &slot.read().expect("proof state should be readable"),
-                    "topology-a",
-                    Instant::now(),
-                )
-                .is_some()
-            }),
-        )
-        .await
-        .expect("the single publication must wake the registered waiter");
-        assert!(ready);
-        assert_eq!(checks, 2);
-    }
-
-    #[tokio::test(start_paused = true)]
-    async fn fleet_proof_wait_revalidates_authority_without_polling() {
-        let slot = Arc::new(std::sync::RwLock::new(FleetCapabilityProofState::default()));
-        let published = Arc::clone(&slot.read().expect("proof state should be readable").published);
-        let checks = Arc::new(AtomicUsize::new(0));
-        let rx = CancellationToken::new();
-        let task = tokio::spawn({
-            let slot = slot.clone();
-            let published = published.clone();
-            let checks = checks.clone();
-            async move {
-                wait_for_fleet_capability_proof(&rx, &published, || {
-                    checks.fetch_add(1, Ordering::SeqCst);
-                    acquire_fleet_capability_proof_from(
-                        &slot.read().expect("proof state should be readable"),
-                        "topology-a",
-                        Instant::now(),
-                    )
-                    .is_some()
-                })
-                .await
-            }
-        });
-        tokio::task::yield_now().await;
-        assert_eq!(checks.load(Ordering::SeqCst), 1);
-        tokio::time::advance(Duration::from_secs(300)).await;
-        assert_eq!(checks.load(Ordering::SeqCst), 1, "missing proof must sleep until publication");
-
-        assert!(
-            publish_fleet_capability_probe_result(
-                &slot,
-                "topology-a",
-                Ok(BTreeMap::new()),
-                Instant::now() - REMOTE_VERSION_STATE_PROOF_TTL,
-            )
-            .is_none()
-        );
-        tokio::task::yield_now().await;
-        assert_eq!(checks.load(Ordering::SeqCst), 2);
-        assert!(!task.is_finished(), "a published but expired proof must not authorize recovery");
-
-        slot.write().expect("proof state should be writable").topology_conflict = true;
-        assert!(publish_fleet_capability_probe_result(&slot, "topology-a", Ok(BTreeMap::new()), Instant::now()).is_none());
-        tokio::task::yield_now().await;
-        assert_eq!(checks.load(Ordering::SeqCst), 3);
-        assert!(!task.is_finished(), "a publication must not bypass conflicting topology");
-
-        slot.write().expect("proof state should be writable").topology_conflict = false;
-        assert!(publish_fleet_capability_probe_result(&slot, "topology-a", Ok(BTreeMap::new()), Instant::now()).is_none());
-        assert!(task.await.expect("a renewed valid proof should release the waiter"));
-        assert_eq!(checks.load(Ordering::SeqCst), 4);
-    }
-
-    #[tokio::test(start_paused = true)]
-    async fn fleet_proof_wait_cancels_without_publication() {
-        let rx = CancellationToken::new();
-        let checks = Arc::new(AtomicUsize::new(0));
-        let task = tokio::spawn({
-            let rx = rx.clone();
-            let checks = checks.clone();
-            async move {
-                wait_for_fleet_capability_proof(&rx, &Notify::new(), || {
-                    checks.fetch_add(1, Ordering::SeqCst);
-                    false
-                })
-                .await
-            }
-        });
-        tokio::task::yield_now().await;
-        assert_eq!(checks.load(Ordering::SeqCst), 1);
-        let cancelled_at = tokio::time::Instant::now();
-        rx.cancel();
-        assert!(!task.await.expect("proof wait must observe cancellation"));
-        assert_eq!(checks.load(Ordering::SeqCst), 1);
-        assert_eq!(tokio::time::Instant::now(), cancelled_at);
-    }
-
    #[test]
    fn remote_version_state_fleet_proof_rejects_nil_process_epoch() {
        let mut peer_epochs = BTreeMap::new();
@@ -4761,12 +4193,12 @@ mod tests {
            (local.to_string(), Uuid::new_v4()),
            (expected_remote[0].clone(), Uuid::new_v4()),
        ]);
-        assert!(validate_capability_fleet_members(&expected_remote, local, &complete).is_ok());
+        assert!(validate_ilm_recovery_export_members(&expected_remote, local, &complete).is_ok());

        let unexpected = BTreeMap::from([(local.to_string(), Uuid::new_v4()), ("node-c".to_string(), Uuid::new_v4())]);
-        assert!(validate_capability_fleet_members(&expected_remote, local, &unexpected).is_err());
+        assert!(validate_ilm_recovery_export_members(&expected_remote, local, &unexpected).is_err());
        assert!(
-            validate_capability_fleet_members(&[local.to_string()], local, &complete).is_err(),
+            validate_ilm_recovery_export_members(&[local.to_string()], local, &complete).is_err(),
            "the configured remote set cannot repeat the local member"
        );
    }
@@ -5246,7 +4678,6 @@ mod tests {
            )),
            draining_generation: None,
            topology_conflict: false,
-            ..Default::default()
        };
        assert!(acquire_fleet_capability_proof_from(&state, "topology-a", now).is_some());

--- a/Show More
+++ b/Show More