fix(ecstore): recover prepared batches with missing versions

Preserve ordinary lifecycle and replication cadence while retaining
usage-only convergence backoff, explicit cycle floors and publication
fencing. Cover repeated snapshots and the real convergence waiting path.

Co-authored-by: heihutu <heihutu@gmail.com>
Co-authored-by: zhi22915 <qiuzgang@gmail.com>

.agents/skills/security-advisory-lessons/references/advisory-patterns.md

@@ -45,11 +45,13 @@ Update this file only when an advisory adds or changes a reusable lesson, affect
 - `GHSA-6r96-hmgc-726c`: request headers collided with lowercase server-derived condition keys such as `userid`, `groups`, `versionid`, and JWT/LDAP claims. Lesson: never let caller-controlled headers append to or replace server-derived policy context; reserve trusted condition keys and keep intentional request-header keys separate.
 - `GHSA-v9cp-qfw9-9pfp`: quantified negated string conditions applied negation after aggregation, transposing `ForAllValues` and `ForAnyValue` semantics. Lesson: push negation into the per-value predicate for quantified operators and test partially overlapping multi-value sets.
 - `GHSA-5w8r-p896-6vq2`: OPA policy mode skipped `ExistingObjectTag/*` loading, so tagged objects looked untagged to external policies. Lesson: external authorization plugins need the same object-tag and request context as built-in policy evaluation before they decide.
+- `GHSA-9wgh-5r68-49p7`: substituted policy-variable values could recreate `${...}` and loop inside a single resolution pass, never reaching the outer iteration limit. Lesson: bound substitutions within each pass and test cycles formed across otherwise literal resolver values; confirm whether attacker-controlled claims can reach those values before assigning remote impact.
 
 ### S3 object actions, copy, multipart, and upload policy validation
 
 - `GHSA-g8w9-qw9q-fghr` and `GHSA-xm99-m3gq-83g8`: a valid presigned `PutObject` accepted extra `x-amz-*` headers omitted from `SignedHeaders`; `x-amz-copy-source` could turn that upload capability into a cross-bucket read performed as the signer. Lesson: a presigned URL is a bounded capability; inspect all received security-sensitive headers and reject unsigned ones before selecting the S3 operation or reaching storage.
 - `GHSA-3ppv-fx5m-m749`: explicit `versionId` reads and copy sources authorized `s3:GetObject` instead of `s3:GetObjectVersion`. Lesson: version-specific object access must select version-specific actions for direct reads, `CopyObject`, and `UploadPartCopy`, with tests proving the backend is not reached on denial.
+- `GHSA-cg33-pxfp-qcj3` and `GHSA-65wq-gjw8-xr9w`: `HeadObject` and object-tagging paths authorized current-object actions while operating on an explicit historical `versionId`. Lesson: select the corresponding version action for metadata and tag reads and writes too; audit every operation that accepts a version ID.
 - `GHSA-gjph-xcgw-4p7w`: `PutObject` and browser POST accepted a caller-supplied `versionId` and replaced an unlocked historical version with only `s3:PutObject`. Lesson: only replication-authorized writes may choose an existing version ID; ordinary uploads must not rewrite version history.
 - `GHSA-x298-9x87-fvjq`: anonymous `ListObjectVersions` fell back to `ListBucket` and returned before public-access-block gates. Lesson: compatibility fallbacks must converge on the same post-authorization checks as direct grants, especially `RestrictPublicBuckets` and anonymous data-plane denies.
 - `GHSA-mx42-j6wv-px98`: `UploadPartCopy` missed source authorization and allowed cross-bucket object exfiltration. Lesson: multipart copy must enforce the same source and destination contract as `CopyObject`.
@@ -110,6 +112,7 @@ Update this file only when an advisory adds or changes a reusable lesson, affect
 
 - `GHSA-j548-9grx-fh4f`: Object Lock enforcement treated unreadable, fabricated, or unparsable bucket metadata as absent configuration and allowed retained objects to be deleted or expired. Lesson: retention must fail closed unless Object Lock absence is authoritative, and every delete, lifecycle, scanner, force-delete, and default-retention path needs the same state distinction.
 - `GHSA-28w4-rp2p-636w` and `GHSA-c7hx-vr97-45rg`: an authorized `DeleteBucket` with `x-rustfs-force-delete: true` removed active COMPLIANCE-retained versions even though ordinary version deletion was denied. Lesson: bucket force-delete must enforce retention across every version, including against root/owner callers.
+- `GHSA-q23w-fp7p-472v`: `PutObjectRetention` policy conditions read `x-amz-object-lock-*` headers while the handler applied mode and date from the XML body. Lesson: authorize the parsed retention that will be stored, or reject mismatched header/body values; compare retention dates as instants so offsets cannot change the applied bound.
 
 ### Serde deserialization and input validation
 
@@ -143,13 +146,13 @@ rg -n "deny_unknown_fields|serde.default|as u32|as usize|as i32" rustfs crates
 - IAM fixes: include import/update/list service-account cases with attacker-controlled parent, claims, access key, secret key, and policy.
 - Copy/upload fixes: include cross-bucket, cross-user, source-denied, destination-denied, copy-source-condition, and multipart completion cases.
 - Presigned upload fixes: include a valid presign with extra unsigned tagging, redirect, storage-class, and cross-bucket copy-source headers; require rejection before source or destination storage access, and verify explicitly signed equivalents still work.
-- Version-action fixes: include historical UUID, explicit current version, `null`, range, partNumber, presigned, STS/session, service-account, anonymous bucket-policy, copy source, and multipart-copy source cases.
+- Version-action fixes: include historical UUID, explicit current version, `null`, range, partNumber, presigned, STS/session, service-account, anonymous bucket-policy, copy source, multipart-copy source, `HeadObject`, and tag read/write cases.
 - Version-write fixes: a `PutObject`-only principal must not replace an existing version through `PutObject` or browser POST `?versionId=`; verify replication-authorized writes and versioned, suspended, and unversioned buckets separately.
-- Policy-condition fixes: include reserved-key header collisions, missing keys, partially overlapping multi-value sets, plugin mode, and built-in policy mode.
+- Policy-condition fixes: include reserved-key header collisions, missing keys, partially overlapping multi-value sets, cyclic variable substitutions, plugin mode, and built-in policy mode.
 - Path fixes: include encoded traversal, absolute path, nested traversal, archive entries with `..`, valid object keys that resemble traversal text but should be rejected, and canonical bucket/prefix boundary checks; test per-key `DeleteObjects` errors and prefix-scoped denials on versioned buckets.
 - Logging fixes: assert redacted output for structs and response bodies that may contain credentials.
 - IAM export fixes: assert exported archives omit plaintext user and service-account secrets unless the format deliberately encrypts or seals them.
 - RPC auth fixes: include captured metadata replay across two concrete methods, stale timestamps, wrong path, wrong method surrogate, wrong secret, and valid same-method calls.
 - Browser/CORS fixes: assert no credentials on reflected/default origins, correct behavior for explicit allowlists, and no same-origin script execution for previewed object content.
 - SSE fixes: inspect stored bytes and verify API metadata, read-back behavior, and on-disk ciphertext together; for ETags, upload equal plaintext under different keys and assert list-only callers cannot derive or correlate the plaintext digest, including multipart objects.
-- Object Lock fixes: include unreadable metadata, fabricated metadata defaults, unparsable config, confirmed absent config, COMPLIANCE/GOVERNANCE retention, lifecycle expiry, scanner sweeps, and force-delete paths; an authorized force-delete must preserve active COMPLIANCE versions.
+- Object Lock fixes: include unreadable metadata, fabricated metadata defaults, unparsable config, confirmed absent config, COMPLIANCE/GOVERNANCE retention, lifecycle expiry, scanner sweeps, and force-delete paths; an authorized force-delete must preserve active COMPLIANCE versions. For `PutObjectRetention`, test conflicting header/body values and offset dates against policy bounds and read-back retention.

.config/e2e-full-selection.txt

@@ -1,2 +1,2 @@
-sha256-darwin=98dff0961c6eb21d6128bfd2d4a6100a624ddf1fb7db05dba360a5d3d0a310c2
-sha256-linux=890f5925b87e1bf3710c356253f3b2276d901e156df9ccc04ec9315374de6d22
+sha256-darwin=ad81c65dcca3a3994c7d62562f477777d7d07fa5aa9daa799741365ac9e5e886
+sha256-linux=a5f013b21fed4162e6bc33077841f0f07b3ffbbbb665ddbce4e77a2513c34d76

.config/e2e-nightly-selection.txt

@@ -1,2 +1,2 @@
-sha256-darwin=efe68675f4676a0d2901242c5815b1f7af5cdec8231f7cccd408f6dacf5c75db
-sha256-linux=003ed6480935a0a95680cc061be143722fbd37bd477b8ff98607b1a064f3aef1
+sha256-darwin=ce7b419faf1ff79840dfc6325d31ee8d1ca5eab85125b94d0bcd58cdf07f0f76
+sha256-linux=5e9e3d701ee873c13fb9094575f6889779c6078b1107624bb57663bef9b9d21f

.config/e2e-smoke-selection.txt

@@ -1 +1 @@
-sha256=ba8f392b617cf9f2338142233a417e43927b28096635e628233ce8a60cf49d10
+sha256=bf77250d94604db7ba094c5d63bf8a284beb872983871bcfd0dc02e46ff53326

.config/make/lint-fmt.mak

@@ -70,6 +70,11 @@ s3s-footprint-check: ## Check the s3s dependency footprint ratchet stays frozen
 	@echo "📦 Checking s3s footprint ratchet..."
 	./scripts/check_s3s_footprint.sh
 
+.PHONY: test-count-ratchet-check
+test-count-ratchet-check: ## Check no workspace crate lost tests or gained #[ignore] against the committed baseline
+	@echo "🧪 Checking per-crate test-count ratchet..."
+	./scripts/check_test_count_ratchet.sh
+
 .PHONY: fips-wording-check
 fips-wording-check: ## Check docs and crates/kms do not over-claim crypto capabilities
 	@echo "📣 Checking cryptographic capability wording guard..."

.config/make/pre-commit.mak

@@ -20,11 +20,11 @@ planning-docs-check: ## Check that no planning-type documents are committed
 	./scripts/check_no_planning_docs.sh
 
 .PHONY: pre-commit
-pre-commit: fmt-check unsafe-code-check architecture-migration-check logging-guardrails-check error-other-ratchet-check tokio-io-uring-check extension-schema-check body-cache-whitelist-check s3s-footprint-check fips-wording-check embedded-secrets-check test-wiring-check doc-paths-check planning-docs-check quick-check ## Run fast pre-commit checks without clippy/full tests
+pre-commit: fmt-check unsafe-code-check architecture-migration-check logging-guardrails-check error-other-ratchet-check tokio-io-uring-check extension-schema-check body-cache-whitelist-check s3s-footprint-check test-count-ratchet-check fips-wording-check embedded-secrets-check test-wiring-check doc-paths-check planning-docs-check quick-check ## Run fast pre-commit checks without clippy/full tests
 	@echo "✅ All pre-commit checks passed!"
 
 .PHONY: pre-pr
-pre-pr: fmt-check unsafe-code-check architecture-migration-check logging-guardrails-check error-other-ratchet-check tokio-io-uring-check extension-schema-check body-cache-whitelist-check s3s-footprint-check fips-wording-check embedded-secrets-check test-wiring-check doc-paths-check planning-docs-check log-analyzer-rules-check offline-enrollment-e2e-check clippy-check test ## Run full pre-PR checks with clippy and tests
+pre-pr: fmt-check unsafe-code-check architecture-migration-check logging-guardrails-check error-other-ratchet-check tokio-io-uring-check extension-schema-check body-cache-whitelist-check s3s-footprint-check test-count-ratchet-check fips-wording-check embedded-secrets-check test-wiring-check doc-paths-check planning-docs-check log-analyzer-rules-check offline-enrollment-e2e-check clippy-check test ## Run full pre-PR checks with clippy and tests
 	@echo "✅ All pre-PR checks passed!"
 
 .PHONY: dev-check

.config/make/tests.mak

@@ -50,8 +50,11 @@ script-tests: ## Run shell script tests
 	./scripts/test_fuzz_runner.sh
 	./scripts/test_python_bin.sh
 	./scripts/check_embedded_secrets.sh --self-test
+	./scripts/check_s3s_footprint.sh --self-test
 	$(RUSTFS_PYTHON_BIN) ./scripts/check_test_wiring.py --self-test
+	$(RUSTFS_PYTHON_BIN) ./scripts/codemods/s3_error_to_s3_types.py --self-test
 	$(RUSTFS_PYTHON_BIN) ./scripts/test_e2e_binary.py
+	$(RUSTFS_PYTHON_BIN) ./scripts/test_upgrade_workflow.py
 	$(RUSTFS_PYTHON_BIN) ./scripts/test_migration_gate_evidence.py
 	$(RUSTFS_PYTHON_BIN) ./scripts/ci_gate.py --self-test
 	$(RUSTFS_PYTHON_BIN) ./scripts/check_security_coverage.py --self-test

.config/nextest.toml

@@ -589,6 +589,14 @@ test-group = 'ecstore-serial-flaky'
 # the PR-lane e2e coverage for scanner usage snapshots consumed by quota and
 # admin surfaces. It uses the same single-node, random-port, isolated-temp-dir
 # fixture as the existing smoke modules.
+#
+# Dual-stack differential (rustfs/backlog#2740): `dual_stack_differential::`
+# starts two single-node servers from the same binary, one per
+# RUSTFS_S3_STACK value, on random ports with isolated temp dirs, and runs one
+# SDK script covering every operation of `impl S3 for FS` against both. Its
+# comparator unit tests need no server. It meets the admission criteria
+# unchanged; the module clause admits a new differential test without another
+# filter edit.
 [profile.e2e-smoke]
 default-filter = """
     package(e2e_test) & (
@@ -596,6 +604,7 @@ default-filter = """
         | test(/^replication_extension_test::(test_replication_check_succeeds_with_remote_target|test_replication_check_rejects_target_without_object_lock|test_set_remote_target_rejects_unversioned_source_bucket|test_replication_check_rejects_unversioned_source_bucket|test_replication_check_rejects_missing_replication_config|test_replication_check_rejects_invalid_bucket|test_set_remote_target_rejects_same_bucket_on_same_deployment|test_set_remote_target_rejects_unversioned_target_bucket|test_set_remote_target_update_requires_arn|test_set_remote_target_update_rejects_missing_target|test_set_remote_target_rejects_invalid_target_url|test_set_remote_target_rejects_self_signed_https_target_without_skip_tls_verify|test_set_remote_target_rejects_private_ca_https_target_without_ca_cert_pem|test_list_remote_targets_rejects_empty_bucket|test_list_remote_targets_rejects_invalid_bucket|test_remove_remote_target_rejects_missing_target|test_remove_remote_target_rejects_missing_arn|test_remove_remote_target_rejects_invalid_bucket|test_remove_remote_target_rejects_target_used_by_replication|test_delete_bucket_replication_removes_remote_target)$/)
         | test(/^reliant::lifecycle::/)
         | test(/^reliant::tiering::/)
+        | test(/^dual_stack_differential::/)
         | test(/^upgrade_compatibility_test::upgrade_write_readiness_tests::/)
         | test(/^on_demand_migration::(get_basic_test::(get_miss_pulls_inline_and_serves_locally_afterwards|head_miss_answers_from_the_source_without_persisting)|interaction_test::test_odm_admin_config_is_redacted_and_status_counts_match_the_source)$/)
     )

.config/s3s-edge-allowlist.txt

@@ -0,0 +1,37 @@
+# Files that may still reference s3s (`s3s::` or `s3s_sigv4`) when Phase 1 of
+# the gateway migration ends (rustfs/backlog#2734 task T0.6, rustfs/backlog#2741).
+# Consumed only by `scripts/check_s3s_footprint.sh --mode allowlist`.
+#
+# One entry per line: a repository-relative file path or a git `:(glob)`
+# pathspec. `**` matches across directories, `*` stays within one path
+# component, and a directory entry matches everything under it. Blank lines
+# and lines starting with `#` are ignored; an entry may not contain whitespace,
+# so a note belongs on its own comment line.
+#
+# Every Rust file listed by `git grep -l '\bs3s\(::\|_sigv4\)' -- '*.rs'` that
+# no entry matches fails the allowlist mode. Task T1.9 switches CI to that
+# mode; until then `--dry-run` prints the files still outside this list, which
+# is the Phase 1 tracking list.
+#
+# Never add crates/** other than crates/e2e_test: the engine crates leave s3s
+# entirely, and the script rejects such an entry. Only the s3s-facing edge of
+# the rustfs binary and the e2e oracle keep it.
+
+# rustfs binary: the s3s-facing edge that survives Phase 1
+rustfs/src/storage/ecfs.rs
+rustfs/src/storage/s3_compat/**
+rustfs/src/storage/access.rs
+rustfs/src/auth.rs
+rustfs/src/error.rs
+rustfs/src/storage_api.rs
+rustfs/src/app/storage_api.rs
+rustfs/src/admin/router.rs
+rustfs/src/app/metadata_route.rs
+rustfs/src/server/http.rs
+rustfs/src/server/layer.rs
+rustfs/src/server/hybrid.rs
+rustfs/src/protocols/client.rs
+
+# e2e oracle: the test target that verifies S3 behaviour against s3s
+crates/e2e_test/src/fake_s3_target/**
+crates/e2e_test/src/**

.config/s3s-footprint-baseline.txt

@@ -0,0 +1,17 @@
+# Exact baseline for the direct s3s footprint, consumed only by
+# scripts/check_s3s_footprint.sh (rustfs/backlog#1677; rustfs/backlog#2734 T0.4).
+#
+# Each value is the exact measurement of the tree, not a ceiling. CI fails when a
+# measured counter differs from its line here in either direction:
+#   - a larger measurement means new code widened the s3s surface: route it
+#     through the gateway abstractions instead; never raise a value here;
+#   - a smaller measurement means the PR shrank the surface: lower the matching
+#     value to the measured number in the same PR.
+#
+# files           Rust files referencing s3s paths, repo-wide minus crates/e2e_test
+# s3_error_lines  lines holding s3_error!, same scope, minus those the script
+#                 header's rule clears (rustfs_s3_types's macro); fails closed
+# ecstore_files   Rust files referencing s3s paths under crates/ecstore/src
+files=194
+s3_error_lines=1566
+ecstore_files=36

.config/test-count-baseline.txt

@@ -0,0 +1,63 @@
+# Per-crate test-count baseline consumed by scripts/check_test_count_ratchet.sh
+# (rustfs/backlog#2734 section 1 rule 3; T0.3 in rustfs/backlog#2738).
+#
+# One row per workspace member: <package>, tests, ignored, tab-separated.
+# tests counts #[test], #[tokio::test], #[tokio::test(...)] and #[test_case(...)]
+# attribute lines under the package directory; ignored counts #[ignore] and
+# #[ignore = "..."]. Both columns are exact: CI fails when a crate's tests fall
+# below or rise above its row, or when its ignored count changes. Raise a row in
+# the PR that adds tests; lowering one is a reviewed statement that tests were
+# intentionally removed. Regenerate with:
+#   scripts/check_test_count_ratchet.sh --update
+e2e_test	898	18
+rustfs	5585	63
+rustfs-audit	70	0
+rustfs-checksums	26	0
+rustfs-common	25	0
+rustfs-concurrency	27	0
+rustfs-config	43	0
+rustfs-connect-symbol-catalog	6	0
+rustfs-credentials	24	0
+rustfs-crypto	67	0
+rustfs-data-usage	54	0
+rustfs-ecstore	6443	1
+rustfs-extension-schema	23	0
+rustfs-filemeta	306	0
+rustfs-heal	839	3
+rustfs-heal-contracts	6	0
+rustfs-iam	388	0
+rustfs-io-core	49	0
+rustfs-io-metrics	125	0
+rustfs-keystone	29	0
+rustfs-kms	715	25
+rustfs-license	2	0
+rustfs-lifecycle	152	0
+rustfs-lock	135	0
+rustfs-log-analyzer	89	0
+rustfs-madmin	209	0
+rustfs-notify	136	0
+rustfs-object-capacity	92	0
+rustfs-object-data-cache	140	0
+rustfs-obs	366	0
+rustfs-policy	681	0
+rustfs-protocols	736	1
+rustfs-protos	63	0
+rustfs-replication	200	0
+rustfs-rio	200	0
+rustfs-rio-v2	34	6
+rustfs-s3-client	65	0
+rustfs-s3-ops	8	0
+rustfs-s3-types	97	0
+rustfs-s3select-api	206	0
+rustfs-s3select-query	188	2
+rustfs-scanner	997	20
+rustfs-scanner-metrics	81	0
+rustfs-security-governance	20	0
+rustfs-signer	31	0
+rustfs-storage-api	31	0
+rustfs-targets	603	26
+rustfs-test-utils	1	0
+rustfs-tls-runtime	43	0
+rustfs-trusted-proxies	68	0
+rustfs-utils	217	0
+rustfs-zip	30	0

.github/actions/quick-checks/action.yml

@@ -86,6 +86,10 @@ runs:
       shell: bash
       run: ./scripts/check_s3s_footprint.sh
 
+    - name: Check per-crate test-count ratchet
+      shell: bash
+      run: ./scripts/check_test_count_ratchet.sh
+
     - name: Check cryptographic capability wording
       shell: bash
       run: ./scripts/check_fips_wording.sh

.github/workflows/cache-warm.yml

@@ -99,7 +99,7 @@ env:
   RUST_BACKTRACE: 1
 
 jobs:
-  # Readers: test-and-lint, test-ilm-integration-serial, build-rustfs-debug-binary,
+  # Readers: test-and-lint (workspace and ILM), build-rustfs-debug-binary,
   # e2e-tests, e2e-full.
   warm-ci-dev:
     name: Warm ci-dev

.github/workflows/ci.yml

@@ -16,7 +16,9 @@ name: Continuous Integration
 
 on:
   push:
-    branches: [ main ]
+    # gateway/integration receives the daily merge of main as a direct push
+    # (rustfs/backlog#2734), so its pushes must prove the result like main's.
+    branches: [ main, gateway/integration ]
     paths-ignore:
       - "**.md"
       - "docs/**"
@@ -168,13 +170,10 @@ jobs:
             echo "started_at=$(date --utc --iso-8601=seconds)"
           } > artifacts/test-and-lint/run-metadata.txt
 
-      # Clippy runs before the test pass: lint failures are the most common
-      # CI-only breakage and should surface in minutes, not after 20+ minutes
-      # of tests.
-      # Sampled too: clippy is the natural control arm for any CARGO_BUILD_JOBS
-      # experiment, since --all-targets is check-only for workspace members and
-      # never links the ~100 test binaries the limit exists to throttle.
+      # Keep full Clippy validation on main, merge groups, and scheduled/manual
+      # runs. PRs retain the complete default test suite and compile-free checks.
       - name: Run clippy lints
+        if: github.event_name != 'pull_request'
         run: |
           ./scripts/ci/resource_sampler.sh start clippy
           trap './scripts/ci/resource_sampler.sh stop' EXIT
@@ -283,6 +282,49 @@ jobs:
       - name: Verify rebalance/decommission migration proofs
         run: ./scripts/check_migration_gate_count.sh evidence artifacts/test-and-lint/core-test-listing.json target/nextest/ci/junit.xml
 
+      # The workspace already compiled these ignored tests. Keep the same Cargo
+      # package selection to reuse their binaries, then run them serially in
+      # separate processes because they share fixed ports and global state.
+      # test_transition_and_restore_flows was re-enabled by rustfs/backlog#1303:
+      # its "missing xl.meta on disk2" was a test-util bug (open_disk hardcoded
+      # disk_index 0), not an EC metadata-distribution issue.
+      # restore_object_usecase_reports_ongoing_conflict_and_completion was
+      # re-enabled by backlog#1304 (restore accepts serialize on a short CAS
+      # guard; the copy-back no longer holds the #4877 whole-copy-back lock,
+      # so the mid-restore ongoing read and fast 409 rejection it asserts are
+      # the implemented contract).
+      - name: Run ignored ILM integration tests serially
+        if: needs.classify-changes.outputs.mode == 'full'
+        env:
+          # Match the preceding workspace build and reuse its feature graph.
+          CARGO_BUILD_JOBS: ${{ (github.event_name == 'push' || github.event_name == 'workflow_dispatch') && '3' || '2' }}
+        run: |
+          mkdir -p artifacts/ilm-integration
+          set +e
+          NEXTEST_HIDE_PROGRESS_BAR=1 timeout --verbose --signal=TERM --kill-after=30s 80m \
+            cargo nextest run --profile default -j1 --run-ignored ignored-only \
+            --all --exclude e2e_test \
+            -E 'binary(lifecycle_integration_test) or (package(rustfs) and test(lifecycle_transition_api_test))' \
+            --status-level all --final-status-level all \
+            2>&1 | tee artifacts/ilm-integration/nextest.log
+          status=${PIPESTATUS[0]}
+          {
+            echo "exit_status=${status}"
+            echo "finished_at=$(date --utc --iso-8601=seconds)"
+            echo
+            echo "Remaining test-related processes:"
+            pgrep -af 'cargo|nextest|target/.*/deps/' || true
+          } > artifacts/ilm-integration/diagnostics.txt
+          exit "${status}"
+
+      - name: Upload ILM test diagnostics
+        if: always() && needs.classify-changes.outputs.mode == 'full'
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: ilm-integration-${{ github.run_number }}-${{ github.run_attempt }}
+          path: artifacts/ilm-integration
+          retention-days: 3
+
   # This gate builds into a fresh target directory to isolate the E2E root.
   # Give its cold build a separate budget from workspace tests and migration proofs.
   offline-enrollment-e2e:
@@ -314,83 +356,11 @@ jobs:
       - name: Check offline enrollment E2E root boundary
         run: ./scripts/check_offline_enrollment_e2e.sh
 
-  # Dedicated serial lane for the ILM / lifecycle integration tests. These tests
-  # drive the object layer through process-global singletons (the GLOBAL_ENV
-  # ECStore, the global tier-config manager, background-expiry workers) and bind
-  # fixed ports (9002 for the scanner suite, 9003 for the app suite), so they are
-  # marked #[ignore] to keep them out of the default parallel `cargo nextest run
-  # --all` pass. Run them here explicitly with `--run-ignored ignored-only` and
-  # `-j1` so no two of them share global state or race for a port at once.
-  # serial_test's #[serial] does NOT serialize across nextest's process-per-test
-  # boundary (see .config/nextest.toml); `-j1` is what actually serializes them.
-  # See rustfs/backlog#1148 (ilm-1) and #1155.
-  test-ilm-integration-serial:
-    name: ILM Integration (serial)
-    if: needs.classify-changes.outputs.mode == 'full' && (github.event_name != 'pull_request' || github.event.action != 'closed')
-    needs: [ quick-checks, classify-changes ]
-    runs-on: sm-standard-4
-    timeout-minutes: 90
-    env:
-      FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@f548e57e544e1ff5a4c46bf1e1b8685f8e4a348a # v7
-        with:
-          persist-credentials: false
-
-      - name: Setup Rust environment
-        uses: ./.github/actions/setup
-        with:
-          rust-version: stable
-          cache-shared-key: ci-dev
-          cache-save-if: 'false'
-          install-build-packaging-tools: 'false'
-
-      # test_transition_and_restore_flows was re-enabled by rustfs/backlog#1303:
-      # its "missing xl.meta on disk2" was a test-util bug (open_disk hardcoded
-      # disk_index 0), not an EC metadata-distribution issue.
-      # restore_object_usecase_reports_ongoing_conflict_and_completion was
-      # re-enabled by backlog#1304 (restore accepts serialize on a short CAS
-      # guard; the copy-back no longer holds the #4877 whole-copy-back lock,
-      # so the mid-restore ongoing read and fast 409 rejection it asserts are
-      # the implemented contract).
-      - name: Run ignored ILM integration tests serially
-        env:
-          # Match the measured Test and Lint link budget. The default exposed
-          # all 14 pod CPUs and a cold cache spent the full 80m compiling
-          # without starting one ILM test (main run 32982910990).
-          CARGO_BUILD_JOBS: ${{ (github.event_name == 'push' || github.event_name == 'workflow_dispatch') && '3' || '2' }}
-        run: |
-          mkdir -p artifacts/ilm-integration
-          set +e
-          NEXTEST_HIDE_PROGRESS_BAR=1 timeout --verbose --signal=TERM --kill-after=30s 80m \
-            cargo nextest run -j1 --run-ignored ignored-only \
-            -p rustfs-scanner -p rustfs \
-            -E 'binary(lifecycle_integration_test) or (package(rustfs) and test(lifecycle_transition_api_test))' \
-            --status-level all --final-status-level all \
-            2>&1 | tee artifacts/ilm-integration/nextest.log
-          status=${PIPESTATUS[0]}
-          {
-            echo "exit_status=${status}"
-            echo "finished_at=$(date --utc --iso-8601=seconds)"
-            echo
-            echo "Remaining test-related processes:"
-            pgrep -af 'cargo|nextest|target/.*/deps/' || true
-          } > artifacts/ilm-integration/diagnostics.txt
-          exit "${status}"
-
-      - name: Upload ILM test diagnostics
-        if: always()
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
-        with:
-          name: ilm-integration-${{ github.run_number }}-${{ github.run_attempt }}
-          path: |
-            artifacts/ilm-integration
-            target/nextest/ci/junit.xml
-
   test-and-lint-rio-v2:
     name: Test and Lint (rio-v2)
-    if: needs.classify-changes.outputs.mode == 'full' && (github.event_name != 'pull_request' || github.event.action != 'closed')
+    # Alternate feature configurations run on main, merge groups, and scheduled
+    # or manual validation; the default workspace remains the PR gate.
+    if: needs.classify-changes.outputs.mode == 'full' && github.event_name != 'pull_request'
     needs: [ quick-checks, classify-changes ]
     runs-on: sm-standard-4
     timeout-minutes: 90
@@ -506,7 +476,7 @@ jobs:
 
   test-and-lint-protocols:
     name: "Test and Lint (${{ matrix.features.name }})"
-    if: needs.classify-changes.outputs.mode == 'full' && (github.event_name != 'pull_request' || github.event.action != 'closed')
+    if: needs.classify-changes.outputs.mode == 'full' && github.event_name != 'pull_request'
     needs: [ quick-checks, classify-changes ]
     runs-on: sm-standard-4
     timeout-minutes: 90
@@ -780,6 +750,8 @@ jobs:
     needs: [ build-rustfs-debug-binary ]
     runs-on: sm-standard-2
     timeout-minutes: 30
+    env:
+      RUSTFS_S3_STACK: legacy
     steps:
       - name: Checkout repository
         uses: actions/checkout@f548e57e544e1ff5a4c46bf1e1b8685f8e4a348a # v7
@@ -898,18 +870,105 @@ jobs:
           path: ${{ runner.temp }}/rustfs-e2e-*/rustfs.log
           retention-days: 3
 
+  # The same e2e-smoke suite against the same debug binary with the gateway
+  # S3 stack selected (rustfs/backlog#2734). Report-only: it is outside the
+  # Test and Lint aggregate and becomes required at T2.10. The archive and run
+  # steps must stay identical to e2e-tests; scripts/ci_gate.py enforces that.
+  e2e-tests-gateway:
+    name: e2e-smoke (gateway, report-only until T2.10)
+    needs: [ build-rustfs-debug-binary ]
+    runs-on: sm-standard-2
+    timeout-minutes: 30
+    continue-on-error: true
+    env:
+      RUSTFS_S3_STACK: gateway
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@f548e57e544e1ff5a4c46bf1e1b8685f8e4a348a # v7
+        with:
+          persist-credentials: false
+
+      - name: Setup Rust environment
+        uses: ./.github/actions/setup
+        with:
+          rust-version: stable
+          cache-shared-key: ci-dev
+          cache-save-if: 'false'
+          install-build-packaging-tools: 'false'
+
+      - name: Set up Python
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.12"
+
+      - name: Install awscurl
+        run: |
+          python3 -m pip install --user --upgrade pip "awscurl==0.44"
+          echo "AWSCURL_PATH=$HOME/.local/bin/awscurl" >> "$GITHUB_ENV"
+
+      - name: Verify awscurl
+        run: test -x "$AWSCURL_PATH"
+
+      - name: Download debug binary
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: rustfs-debug-binary
+          path: target/debug
+
+      - name: Make binary executable
+        run: chmod +x ./target/debug/rustfs
+
+      - name: Archive e2e smoke test binaries
+        env:
+          NEXTEST_ARCHIVE: ${{ runner.temp }}/rustfs-e2e-smoke.tar.zst
+          NEXTEST_LISTING: ${{ runner.temp }}/rustfs-e2e-smoke-list.json
+        run: |
+          cargo nextest archive --profile e2e-smoke -p e2e_test --archive-file "${NEXTEST_ARCHIVE}"
+          cargo nextest list --profile e2e-smoke --archive-file "${NEXTEST_ARCHIVE}" --message-format json > "${NEXTEST_LISTING}"
+          python3 ./scripts/check_test_wiring.py --check-profile e2e-smoke "${NEXTEST_LISTING}"
+          ./scripts/check_security_smoke_count.sh check "${NEXTEST_LISTING}"
+
+      - name: Run e2e smoke suite
+        env:
+          NEXTEST_ARCHIVE: ${{ runner.temp }}/rustfs-e2e-smoke.tar.zst
+          RUSTFS_E2E_LOG_DIR: ${{ runner.temp }}/rustfs-e2e-smoke-logs
+          SAMPLER_INTERVAL_SECS: "15"
+        run: |
+          ./scripts/ci/resource_sampler.sh start e2e-smoke
+          trap './scripts/ci/resource_sampler.sh stop' EXIT
+          python3 scripts/e2e_binary.py run --features e2e-test-hooks -- cargo nextest run --profile e2e-smoke --archive-file "${NEXTEST_ARCHIVE}" \
+            --status-level all --final-status-level all --failure-output final
+
+      - name: Upload e2e smoke diagnostics
+        if: always()
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: e2e-smoke-gateway-diagnostics-${{ github.run_number }}
+          path: |
+            ${{ runner.temp }}/rustfs-e2e-smoke-logs/
+            ${{ runner.temp }}/rustfs-e2e-smoke-list.json
+          if-no-files-found: warn
+
+      - name: Upload e2e smoke JUnit report
+        if: always()
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: e2e-smoke-gateway-junit-${{ github.run_number }}
+          path: target/nextest/e2e-smoke/junit.xml
+          if-no-files-found: warn
+
   e2e-full:
     name: End-to-End Tests (full merge gate)
     # Merge gate only (backlog#1149 ci-5): the never-automated user-visible
     # suites — KMS, object_lock, multipart_auth, quota, checksum, encryption,
     # security-boundary, ... — via the e2e-full nextest profile. Too heavy for
-    # every PR, so it is gated to main pushes, the merge queue, and manual
-    # dispatch. protocols / the 7 cluster suites / replication / #[ignore] are
-    # owned by other lanes (see .config/nextest.toml profile.e2e-full).
+    # every PR, so it is gated to main and gateway/integration pushes, the merge
+    # queue, and manual dispatch. protocols / the 7 cluster suites / replication
+    # / #[ignore] are owned by other lanes (see .config/nextest.toml profile.e2e-full).
     if: >-
       github.event_name == 'workflow_dispatch' ||
       github.event_name == 'merge_group' ||
-      (github.event_name == 'push' && github.ref == 'refs/heads/main')
+      (github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/gateway/integration'))
     needs: [ build-rustfs-debug-binary ]
     runs-on: sm-standard-2
     timeout-minutes: 55
@@ -1264,7 +1323,6 @@ jobs:
       - quick-checks
       - test-and-lint
       - offline-enrollment-e2e
-      - test-ilm-integration-serial
       - test-and-lint-rio-v2
       - connect-short-credential-boundary
       - test-and-lint-protocols
@@ -1298,7 +1356,6 @@ jobs:
       - quick-checks
       - test-and-lint
       - offline-enrollment-e2e
-      - test-ilm-integration-serial
       - test-and-lint-rio-v2
       - test-and-lint-protocols
       - build-rustfs-debug-binary

.github/workflows/e2e-upgrade.yml

@@ -96,38 +96,8 @@ jobs:
           overwrite: true
 
   upgrade:
-    name: ${{ matrix.name }}
+    name: Upgrade compatibility
     needs: build
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          # The two `_from_rc2_` tests keep their names: they assert
-          # release-independent object contracts and pass unchanged against the
-          # newer pinned source, so renaming them would only churn history and
-          # the CI required-check names. UPGRADE_SOURCE_VERSION above is the
-          # single source of truth for which release they actually run against.
-          - name: Direct upgrade from the previous release
-            test: direct_upgrade_from_rc2_preserves_object_contracts
-            artifact: direct-upgrade
-          - name: Mixed-version rolling upgrade from the previous release
-            test: rolling_upgrade_from_rc2_preserves_mixed_version_contracts
-            artifact: mixed-version-upgrade
-          - name: Bucket configuration survives the upgrade
-            test: direct_upgrade_from_previous_release_preserves_bucket_configuration
-            artifact: bucket-config-upgrade
-          - name: Rollback reads current bucket metadata
-            test: rollback_to_previous_release_reads_current_bucket_metadata
-            artifact: bucket-config-rollback
-          - name: ODM configuration recovery after rc.5 rollback
-            test: rc5_rollback_requires_restoring_odm_configuration
-            artifact: odm-config-rollback
-          - name: Multipart layouts survive the rc.5 upgrade
-            test: direct_upgrade_from_rc5_preserves_multipart_layouts
-            artifact: multipart-layout-upgrade
-          - name: rc.5 multipart replication baseline
-            test: rc5_baseline_replicates_multipart_layouts
-            artifact: multipart-layout-baseline
     runs-on: sm-standard-2
     timeout-minutes: 60
     env:
@@ -142,8 +112,7 @@ jobs:
         uses: ./.github/actions/setup
         with:
           cache-shared-key: e2e-upgrade-tests
-          # One main-branch consumer warms the shared test-harness dependencies.
-          cache-save-if: ${{ github.ref == 'refs/heads/main' && matrix.artifact == 'direct-upgrade' }}
+          cache-save-if: ${{ github.ref == 'refs/heads/main' }}
           install-build-packaging-tools: "false"
           install-test-tools: "false"
 
@@ -170,22 +139,49 @@ jobs:
           echo "RUSTFS_UPGRADE_SOURCE_BINARY=$SOURCE_DIR/rustfs" >> "$GITHUB_ENV"
           echo "RUSTFS_E2E_LOG_DIR=$RUNNER_TEMP/rustfs-upgrade-logs" >> "$GITHUB_ENV"
 
-      - name: Run upgrade compatibility test
+      # Reuse one compiled harness, while keeping each case in its own process.
+      # Continue after a failure to retain the former matrix's complete verdict.
+      - name: Run upgrade compatibility tests
+        shell: bash
         env:
-          RUSTFS_SCANNER_HEAL_G09_EVIDENCE_DIR: ${{ runner.temp }}/rustfs-upgrade-g09-evidence/${{ matrix.artifact }}
           NO_PROXY: 127.0.0.1,localhost,::1
         run: |
           export no_proxy="$NO_PROXY"
-          python3 scripts/e2e_binary.py run -- cargo test --locked -p e2e_test \
-            "upgrade_compatibility_test::${{ matrix.test }}" \
-            -- --ignored --exact --nocapture
+          cases=(
+            direct-upgrade:direct_upgrade_from_rc2_preserves_object_contracts
+            mixed-version-upgrade:rolling_upgrade_from_rc2_preserves_mixed_version_contracts
+            bucket-config-upgrade:direct_upgrade_from_previous_release_preserves_bucket_configuration
+            bucket-config-rollback:rollback_to_previous_release_reads_current_bucket_metadata
+            odm-config-rollback:rc5_rollback_requires_restoring_odm_configuration
+            multipart-layout-upgrade:direct_upgrade_from_rc5_preserves_multipart_layouts
+            multipart-layout-baseline:rc5_baseline_replicates_multipart_layouts
+          )
+          status=0
+          for entry in "${cases[@]}"; do
+            artifact="${entry%%:*}"
+            test="${entry#*:}"
+            export RUSTFS_SCANNER_HEAL_G09_EVIDENCE_DIR="$RUNNER_TEMP/rustfs-upgrade-g09-evidence/$artifact"
+            export RUSTFS_E2E_LOG_DIR="$RUNNER_TEMP/rustfs-upgrade-logs/$artifact"
+            mkdir -p "$RUSTFS_E2E_LOG_DIR"
+            echo "::group::$test"
+            if python3 scripts/e2e_binary.py run -- cargo test --locked -p e2e_test \
+              "upgrade_compatibility_test::$test" -- --ignored --exact --nocapture \
+              2>&1 | tee "$RUSTFS_E2E_LOG_DIR/test.log"; then
+              echo "PASS: $test"
+            else
+              echo "::error::Upgrade compatibility failed: $test"
+              status=1
+            fi
+            echo "::endgroup::"
+          done
+          exit "$status"
 
       - name: Upload scanner/heal G09 evidence
         if: always()
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
-          name: ${{ matrix.artifact }}-g09-evidence-${{ github.run_number }}
-          path: ${{ runner.temp }}/rustfs-upgrade-g09-evidence/${{ matrix.artifact }}
+          name: upgrade-g09-evidence-${{ github.run_number }}
+          path: ${{ runner.temp }}/rustfs-upgrade-g09-evidence
           if-no-files-found: ignore
           retention-days: 14
 
@@ -193,7 +189,7 @@ jobs:
         if: always()
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
-          name: ${{ matrix.artifact }}-server-logs-${{ github.run_number }}
+          name: upgrade-server-logs-${{ github.run_number }}
           path: ${{ runner.temp }}/rustfs-upgrade-logs
           if-no-files-found: warn
           retention-days: 14

.github/workflows/oidc-keycloak.yml

@@ -20,8 +20,9 @@ on:
       - ".github/workflows/oidc-keycloak.yml"
       - "crates/config/src/constants/oidc.rs"
       - "crates/iam/src/federation/**"
-      - "crates/iam/src/oidc.rs"
+      - "crates/iam/src/oidc/**"
       - "rustfs/src/admin/handlers/oidc.rs"
+      - "rustfs/src/admin/service/oidc_config.rs"
       - "rustfs/src/admin/handlers/sts.rs"
       - "scripts/test/oidc_keycloak_live.sh"
       - "scripts/test/fixtures/keycloak-rustfs-ci-realm.json"
@@ -31,8 +32,9 @@ on:
       - ".github/workflows/oidc-keycloak.yml"
       - "crates/config/src/constants/oidc.rs"
       - "crates/iam/src/federation/**"
-      - "crates/iam/src/oidc.rs"
+      - "crates/iam/src/oidc/**"
       - "rustfs/src/admin/handlers/oidc.rs"
+      - "rustfs/src/admin/service/oidc_config.rs"
       - "rustfs/src/admin/handlers/sts.rs"
       - "scripts/test/oidc_keycloak_live.sh"
       - "scripts/test/fixtures/keycloak-rustfs-ci-realm.json"

.vscode/launch.json

@@ -7,7 +7,9 @@
             "name": "Debug(only) executable 'rustfs'",
             "env": {
               "RUST_LOG": "rustfs=info,ecstore=info,s3s=info,iam=info",
-              "RUSTFS_SKIP_BACKGROUND_TASK": "on"
+              "RUSTFS_SKIP_BACKGROUND_TASK": "on",
+              // Local test volumes share one physical disk.
+              "RUSTFS_UNSAFE_BYPASS_DISK_CHECK": "true"
               //"RUSTFS_OBS_LOG_DIRECTORY": "./deploy/logs",
               // "RUSTFS_POLICY_PLUGIN_URL":"http://localhost:8181/v1/data/rustfs/authz/allow",
               // "RUSTFS_POLICY_PLUGIN_AUTH_TOKEN":"your-opa-token"
@@ -44,6 +46,7 @@
             "env": {
                 "RUST_LOG": "rustfs=debug,ecstore=info,s3s=debug,iam=debug",
                 "RUSTFS_SKIP_BACKGROUND_TASK": "on",
+                "RUSTFS_UNSAFE_BYPASS_DISK_CHECK": "true",
                 //"RUSTFS_OBS_LOG_DIRECTORY": "./deploy/logs",
                 // "RUSTFS_POLICY_PLUGIN_URL":"http://localhost:8181/v1/data/rustfs/authz/allow",
                 // "RUSTFS_POLICY_PLUGIN_AUTH_TOKEN":"your-opa-token" 
@@ -117,7 +120,8 @@
             "env": {
                 "RUSTFS_ACCESS_KEY": "rustfsadmin",
                 "RUSTFS_SECRET_KEY": "rustfsadmin",
-                //"RUSTFS_VOLUMES": "./target/volume/test{1...4}",
+                "RUSTFS_VOLUMES": "./target/volume/test{1...4}",
+                "RUSTFS_UNSAFE_BYPASS_DISK_CHECK": "true",
                 "RUSTFS_ADDRESS": ":9000",
                 "RUSTFS_CONSOLE_ENABLE": "true",
                 // "RUSTFS_OBS_TRACE_ENDPOINT": "http://127.0.0.1:4318/v1/traces", // jeager otlp http endpoint
@@ -135,41 +139,30 @@
         {
             "type": "lldb",
             "request": "launch",
-            "name": "Debug test_lifecycle_transition_basic",
+            "name": "Debug test_transition_and_restore_flows",
             "cargo": {
                 "args": [
                     "test",
+                    "--no-run",
                     "-p",
                     "rustfs-scanner",
                     "--test",
                     "lifecycle_integration_test",
-                    "serial_tests::test_lifecycle_transition_basic",
                     "-j",
                     "1"
-                ]
+                ],
+                "filter": {
+                    "name": "lifecycle_integration_test",
+                    "kind": "test"
+                }
             },
-            "args": [],
-            "cwd": "${workspaceFolder}"
-        },
-        {
-            "name": "Debug executable target/debug/test",
-            "type":  "lldb",
-            "request": "launch",
-            "program": "${workspaceFolder}/target/debug/deps/lifecycle_integration_test-5915cbfcab491b3b",
             "args": [
-              "--skip",
-              "test_lifecycle_expiry_basic",
-              "--skip",
-              "test_lifecycle_expiry_deletemarker",
-              //"--skip",
-              //"test_lifecycle_transition_basic",
-            ],
-            "cwd": "${workspaceFolder}",
-            //"stopAtEntry": false,
-            //"preLaunchTask": "cargo build",
-            "sourceLanguages": [
-                "rust"
+                "serial_tests::test_transition_and_restore_flows",
+                "--exact",
+                "--ignored",
+                "--test-threads=1"
             ],
+            "cwd": "${workspaceFolder}"
         },
         {
             "name": "Debug executable target/debug/rustfs with sse kms",
@@ -285,7 +278,7 @@
                 "RUSTFS_COMPRESSION_ENABLED": "true",
                 "RUSTFS_KMS_ENABLE": "true",
                 "RUSTFS_KMS_BACKEND": "local",
-                "RUSTFS_KMS_KEY_DIR": "./target/rio-v2/kms-key-dir",
+                "RUSTFS_KMS_KEY_DIR": "${workspaceFolder}/target/rio-v2/kms-key-dir",
                 "RUSTFS_KMS_LOCAL_MASTER_KEY": "my-secret-key", // Some Password
                 "RUSTFS_KMS_DEFAULT_KEY_ID": "rustfs-master-key",
             },
@@ -307,6 +300,7 @@
                 "RUSTFS_ACCESS_KEY": "rustfsadmin",
                 "RUSTFS_SECRET_KEY": "rustfsadmin",
                 "RUSTFS_VOLUMES": "./target/e2e-test/test{1...4}",
+                "RUSTFS_UNSAFE_BYPASS_DISK_CHECK": "true",
                 "RUSTFS_REGION": "us-east-1",
                 "RUSTFS_ADDRESS": ":9000",
                 "RUSTFS_CONSOLE_ENABLE": "true",
@@ -315,7 +309,7 @@
 
                 "RUSTFS_KMS_ENABLE": "true",
                 "RUSTFS_KMS_BACKEND": "local",
-                "RUSTFS_KMS_KEY_DIR": "./target/e2e-key-dir",
+                "RUSTFS_KMS_KEY_DIR": "${workspaceFolder}/target/e2e-key-dir",
                 "RUSTFS_KMS_LOCAL_MASTER_KEY": "my-secret-key", // Some Password
                 "RUSTFS_KMS_DEFAULT_KEY_ID": "rustfs-master-key",
             },

ARCHITECTURE.md

@@ -155,7 +155,7 @@ default build (lifecycle:
    - ⚠️ PARTIALLY VIOLATED: serving-side `s3s` references remain in ecstore
      (bucket metadata/replication/lifecycle DTOs and error mapping). The
      count is ratcheted shrink-only by `scripts/check_s3s_footprint.sh`
-     (`S3S_ECSTORE_FILES_BASELINE`; the `object_lock` module was converted to
+     (the `ecstore_files` line of `.config/s3s-footprint-baseline.txt`; the `object_lock` module was converted to
      storage-level types as the first ratchet step). Target state: the
      baseline reaches zero and ecstore's `Cargo.toml` drops `s3s`.
 

Cargo.lock

@@ -275,15 +275,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "anyerror"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71add24cc141a1e8326f249b74c41cfd217aeb2a67c9c6cf9134d175469afd49"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "anyhow"
 version = "1.0.104"
@@ -1715,30 +1706,6 @@ dependencies = [
  "syn 3.0.6",
 ]
 
-[[package]]
-name = "borsh"
-version = "1.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "553c5d846a6ba5150c65e3b1b8ec073bcf1abc20f9b7220de384a4443ea4e20a"
-dependencies = [
- "borsh-derive",
- "bytes",
- "cfg_aliases",
-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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- "proc-macro-crate",
- "proc-macro2",
- "quote",
- "syn 3.0.6",
-]
-
 [[package]]
 name = "brotli"
 version = "8.0.4"
@@ -1805,18 +1772,6 @@ version = "3.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
 
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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- "rust_decimal",
- "schemars 1.2.2",
- "serde",
- "utf8-width",
-]
-
 [[package]]
 name = "bytemuck"
 version = "1.25.2"
@@ -2884,9 +2839,9 @@ checksum = "4583a4551df46e2792f82ceeac45e850d2e2d5debba0b91f102385cda5b11f06"
 
 [[package]]
 name = "datafusion"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14313430439ef858ed5f52ca9c840e9eea9844da34d3716d05a476449634da5d"
+checksum = "4cd5317db77ba6bca25c761a8091b9d294a9f4188e4f9dcd0243e6a57de862ac"
 dependencies = [
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  "arrow-schema",
@@ -2933,9 +2888,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-catalog"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c0756ebc770bcebae366dfd273dad50935f6103b4d212253cb17e2e53c5427f"
+checksum = "f35d36794509b7bfcbf90e11a1b5e4d047123c34610105e2e80a2048351cdb2f"
 dependencies = [
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  "async-trait",
@@ -2958,9 +2913,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-catalog-listing"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbde2961698705d8402f0f382f08876fc6f1126ffde790ef17833cf0ab87cd59"
+checksum = "a6454bfb7f43b83942e2ca2576fd09342eedbd0d323e1eef72c3c8e4d57d7203"
 dependencies = [
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  "async-trait",
@@ -2982,9 +2937,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-common"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6e06fe711ff815c8cf3143158547aea599702fd43f76f5866c70d5a5b3693a0"
+checksum = "d26626e12b224b83351239465dcd00f72d47b02fb5e5b65a643e2dc8ed37f687"
 dependencies = [
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  "arrow-ipc",
@@ -3009,9 +2964,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-common-runtime"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7a5107acff4e3ed50a7732acec06bba40e74ab49df021397ed250d60f04e42a"
+checksum = "a106420cbfa980f242c22243ae9a6cce661d4d86ce96cff87dacabf7754a4470"
 dependencies = [
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  "log",
@@ -3020,9 +2975,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-datasource"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f69f45d2d700785be8df9d4b44410e1c8e4a856f10cc728b418a1066c0b594fb"
+checksum = "210aa1e9525e9454f2399dbb8b0b95510145bd8c1fdc35de74e9ccbf81bcb699"
 dependencies = [
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  "async-trait",
@@ -3050,9 +3005,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-datasource-arrow"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81650af64894ef34b46d2ef818ef244b40a81d90818f3bc642bf8fbf6758f8e0"
+checksum = "65b1b041688cad707fa103c3e7f4c6d89b3134ebf67da0129070dad3381851eb"
 dependencies = [
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  "arrow-ipc",
@@ -3074,9 +3029,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-datasource-csv"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5e2519bed59a6907c79298b9c21fe807bbc34e4ff8414577d699b0741083593"
+checksum = "2a7b34e253c4fa5251f174977af910a2f2ec831ec39dbbb56b29ce505cff278b"
 dependencies = [
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  "async-trait",
@@ -3097,9 +3052,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-datasource-json"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "635e61290e171597f6e50427e0cb486eda468ab47e880fa24d15bbb0fa24ac7e"
+checksum = "1663338f43be6a5746473008e2d0fbde282577ddf0bae90d6c7386e988d71b29"
 dependencies = [
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  "async-trait",
@@ -3120,9 +3075,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-datasource-parquet"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07cd518f85b3a027d913047b4ab0811111a2b734fdf84a51b78234455f10d8fa"
+checksum = "7c521ae91b6d899d7190812881f45fe9463c222c11d90149f5332a2e56555904"
 dependencies = [
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  "arrow-schema",
@@ -3152,15 +3107,15 @@ dependencies = [
 
 [[package]]
 name = "datafusion-doc"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d44c5919b560862dd1cb20a5c75b3e48c3d9e49719c91d78da5c38eaad5495c4"
+checksum = "0c2569c2e74a34fcae3a369ab3912d61e41a062592510f11e31b1dae2725ecdc"
 
 [[package]]
 name = "datafusion-execution"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7620ad535af8730186bdec05d720e40d9a4584b40c7eb75f72c43aa7978e5484"
+checksum = "39cfdd5ac0769d1e74a885450e49fde8f63ca7ab41eb479a068564aaea80b837"
 dependencies = [
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  "arrow-buffer",
@@ -3184,9 +3139,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-expr"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea229af8b73e566fc6ebb1c8dd42ab250f8855c5304bd173f4b50ead78b64304"
+checksum = "86560fd7df4dda924f5474b588c56e7ae8e96dcf158c7327c9cfe9daff448ec5"
 dependencies = [
  "arrow",
  "arrow-schema",
@@ -3201,15 +3156,16 @@ dependencies = [
  "indexmap 2.14.2",
  "itertools 0.15.0",
  "recursive",
+ "serde",
  "serde_json",
  "sqlparser",
 ]
 
 [[package]]
 name = "datafusion-expr-common"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a18baa840f77760dcc9eaad281329bc57536c5c39e65e8649596f2a51216be7"
+checksum = "e82e313cf655cf6bc2dce6cbd23bcb0d20236a54a1b09c436615e4bac4d8c49f"
 dependencies = [
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  "datafusion-common",
@@ -3219,9 +3175,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-functions"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "763bbfeec40b55a8a961d7349c0fcfcec4f3f66cc234d6295250b95371b85e34"
+checksum = "939ae2771da8a3fdc23ab4de610ae8fef9515476626b49d96d0d5c782b105771"
 dependencies = [
  "arrow",
  "arrow-buffer",
@@ -3247,9 +3203,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-functions-aggregate"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46c0c2b2e856883ecf6a4fa8b23e7c6041183af8a68d0583dc95d1d21e4eaee0"
+checksum = "fd6c3aee9f2bc65716787d651e023743a90b4efbc57a2f679f036632e16fb110"
 dependencies = [
  "arrow",
  "datafusion-common",
@@ -3268,9 +3224,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-functions-aggregate-common"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e35e42c87dfbff06934ea0e99cfed3440ac614c3f3bfb8c33be35ca0587d4140"
+checksum = "988b5d3dfb4939d81c2f9fab267063610fe52a843620f2fa6cb2a1598e43369c"
 dependencies = [
  "arrow",
  "datafusion-common",
@@ -3280,9 +3236,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-functions-nested"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08079b0604cdcc43c7d6cf006cfd5d3ed9c235ade0c1ebe91085a62f875603df"
+checksum = "08149d433a97c9ea3cdf80de06480ab5c7f5453485f1e452d5b3583c81d5c0dd"
 dependencies = [
  "arrow",
  "arrow-ord",
@@ -3305,9 +3261,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-functions-table"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe2070ecf5638a93c81c8babc7858339ef52165a9f54da1411afd69adf7d85ce"
+checksum = "2c767567cce2782d4d0bdfa55fab010aaba0bdbe533509e9e0b9a6a3ee29ed59"
 dependencies = [
  "arrow",
  "async-trait",
@@ -3321,9 +3277,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-functions-window"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e9a164ebe1998c5c3f9e15c9a0c4e6b599a0c8739b5471bfb089752441963f1"
+checksum = "0a311c1f558d1f792f1f631c3670da12ee72a20fbf5d6ca151325d66191c03c1"
 dependencies = [
  "arrow",
  "datafusion-common",
@@ -3338,9 +3294,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-functions-window-common"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98965b183f92201c16798994820ae032649c4821e089c4c80e7d0f4485d41df5"
+checksum = "fffd54b8acf6ecef284cc0677e01e1b8c71be64fec50612ba00a0ff0d9b41a52"
 dependencies = [
  "datafusion-common",
  "datafusion-physical-expr-common",
@@ -3348,9 +3304,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-macros"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a711bd5a06ec85d9683e142d28a98ad0679a7220669f5c1b8589e57e9b29e46"
+checksum = "14d6df9763c8fb968b2417d797aef4c55ac2e4a895aaef38c72c16a287aa4a40"
 dependencies = [
  "datafusion-doc",
  "quote",
@@ -3359,9 +3315,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-optimizer"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff3256b62ff44616ec83c7f04741d21124970833bb377ed56d9abc5ec6f707ec"
+checksum = "acfb8cea6e05e2e75bae183340cf7d53cccb3db0449e2f1fbc07654d980fd19f"
 dependencies = [
  "arrow",
  "chrono",
@@ -3379,9 +3335,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-physical-expr"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1e37a25b5aa1f3a1db114f0ee3605bf01639b83a831dcde35119ee61f0b11d6"
+checksum = "9f002cef849e10c0597a217ec7891c2796c0f8b42d739f5d24abc24496373406"
 dependencies = [
  "arrow",
  "arrow-schema",
@@ -3402,9 +3358,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-physical-expr-adapter"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a4d12787d42e88b26b0d3ec006192fa23ceb832ef2a9e87439ce820a8e038cc"
+checksum = "82761522c4536e7059d3b185cd99f10525c2bf48f1bd26a0a57e73e19eadc0fb"
 dependencies = [
  "arrow",
  "datafusion-common",
@@ -3417,9 +3373,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-physical-expr-common"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d13bf7f50fd902f5afc46d50759f5185b5620c40b24054f80f7c648897d3e5a6"
+checksum = "f8c5c67aa252886f4d6b331c8114797f5b140464e774c4da36889269a1bf1bd8"
 dependencies = [
  "arrow",
  "chrono",
@@ -3434,9 +3390,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-physical-optimizer"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11fbe7e6665072957d44ed9587676e17a1f9ab3acfadfc287dac23750585f18a"
+checksum = "f1a49dd3a76e4879012682c59dc3735282e60640c97483546a4113564a60bf8f"
 dependencies = [
  "arrow",
  "datafusion-common",
@@ -3454,9 +3410,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-physical-plan"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1265d58e5bce07d154e642a51ff43033b576a6ae40d50a29ac2b9f311004eb52"
+checksum = "b1451d6817e5ac0dd21819b19949d1c420ab51d748f55dd9a96ecb5418a24c97"
 dependencies = [
  "arrow",
  "arrow-data",
@@ -3483,15 +3439,16 @@ dependencies = [
  "num-traits",
  "parking_lot",
  "pin-project-lite",
+ "serde",
  "serde_json",
  "tokio",
 ]
 
 [[package]]
 name = "datafusion-pruning"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74b06b333405c05015836ed36cea02cc29d1e2ee8fb414a77532d8346fb56492"
+checksum = "f11f0dbe2b5a642f6106e44de8bbd6654fa7220ca14f32313d4efd5514a86968"
 dependencies = [
  "arrow",
  "datafusion-common",
@@ -3505,9 +3462,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-session"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7616b17b1d2fee3e9b13c651eac91b768d153265e6ba88e06e0b4af7883f69c"
+checksum = "62dc5ce37a5ce1ff5362949776829aded2529a11dbaa13d24b0ffa6a059e106a"
 dependencies = [
  "arrow-schema",
  "async-trait",
@@ -3520,9 +3477,9 @@ dependencies = [
 
 [[package]]
 name = "datafusion-sql"
-version = "55.1.0"
+version = "55.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b4848be66dd008d55adbe1dbc8cbd6a2502588ad0c0b8483bab0f43fd4495d0"
+checksum = "816c224a0ef5469a32a562b5d4830544f714f97c5f50142109286d40a288c7db"
 dependencies = [
  "arrow",
  "bigdecimal",
@@ -3769,34 +3726,13 @@ dependencies = [
  "syn 2.0.119",
 ]
 
-[[package]]
-name = "derive_more"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a9b99b9cbbe49445b21764dc0625032a89b145a2642e67603e1c936f5458d05"
-dependencies = [
- "derive_more-impl 1.0.0",
-]
-
 [[package]]
 name = "derive_more"
 version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d751e9e49156b02b44f9c1815bcb94b984cdcc4396ecc32521c739452808b134"
 dependencies = [
- "derive_more-impl 2.1.1",
-]
-
-[[package]]
-name = "derive_more-impl"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb7330aeadfbe296029522e6c40f315320aba36fc43a5b3632f3795348f3bd22"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.119",
- "unicode-xid",
+ "derive_more-impl",
 ]
 
 [[package]]
@@ -4013,7 +3949,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -4363,7 +4299,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5363,9 +5299,9 @@ dependencies = [
 
 [[package]]
 name = "hotpath"
-version = "0.28.5"
+version = "0.28.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34aabdeba3c81cef2075a2961a370ebfe1d9cc3f8d2242fd400ce6ef6f3bbfcb"
+checksum = "e2ee4f8d17ebe2400fa845f079acf9ede235be6472512876779af45f7890f934"
 dependencies = [
  "arc-swap",
  "async-channel",
@@ -5398,15 +5334,15 @@ dependencies = [
 
 [[package]]
 name = "hotpath-drain"
-version = "0.28.5"
+version = "0.28.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4b61a4a77e6563bdc37f831cd6aa5e2089429b62ea377dd759bbabafc207d7a"
+checksum = "fd9e65572a429f44a48c360559a3f59028579b53e1df07c5f31dc147d2b94a50"
 
 [[package]]
 name = "hotpath-macros"
-version = "0.28.5"
+version = "0.28.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c6275c8d1931d280bd505debb7ef91dbeae2c23477aabbfe10487b7430bdeb3"
+checksum = "2b90aafbaf5f6af01ee9db2888644b15995f5306e5c280aec8261feb3e5e214a"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -5768,7 +5704,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "20fd6de4ccfcc187e38bc21cfa543cb5a302cb86a8b114eb7f0bf0dc9f8ac00f"
 dependencies = [
  "io-lifetimes 3.0.1",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -6300,7 +6236,7 @@ dependencies = [
  "bytes",
  "chrono",
  "dashmap",
- "derive_more 2.1.1",
+ "derive_more",
  "futures-util",
  "getrandom 0.4.3",
  "lazy_static",
@@ -6454,12 +6390,6 @@ dependencies = [
  "quote",
 ]
 
-[[package]]
-name = "maplit"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
-
 [[package]]
 name = "matchers"
 version = "0.2.0"
@@ -7033,7 +6963,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -7401,42 +7331,6 @@ dependencies = [
  "url",
 ]
 
-[[package]]
-name = "openraft"
-version = "0.9.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a97014fb78acb77be3a40ac2da305f6dd3a6b243f3a908ace87d29b3972eaafd"
-dependencies = [
- "anyerror",
- "byte-unit",
- "chrono",
- "clap",
- "derive_more 1.0.0",
- "futures",
- "maplit",
- "openraft-macros",
- "rand 0.8.8",
- "serde",
- "thiserror 1.0.69",
- "tokio",
- "tracing",
- "tracing-futures",
- "validit",
-]
-
-[[package]]
-name = "openraft-macros"
-version = "0.9.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55417d79f46a787dd88c043d831d8b7a0713f7c69d1925f9de51cc42c437250f"
-dependencies = [
- "chrono",
- "proc-macro2",
- "quote",
- "semver",
- "syn 2.0.119",
-]
-
 [[package]]
 name = "openssl-probe"
 version = "0.2.1"
@@ -8451,7 +8345,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "be769465445e8c1474e9c5dac2018218498557af32d9ed057325ec9a41ae81bf"
 dependencies = [
  "heck 0.5.0",
- "itertools 0.14.0",
+ "itertools 0.10.5",
  "log",
  "multimap",
  "once_cell",
@@ -8471,7 +8365,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "03da047801ff44bb6a4d407d4860c05fd70bb81714e6b2f3812603d5b145b042"
 dependencies = [
  "heck 0.5.0",
- "itertools 0.14.0",
+ "itertools 0.10.5",
  "log",
  "multimap",
  "petgraph 0.8.3",
@@ -8492,7 +8386,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a56d757972c98b346a9b766e3f02746cde6dd1cd1d1d563472929fdd74bec4d"
 dependencies = [
  "anyhow",
- "itertools 0.14.0",
+ "itertools 0.10.5",
  "proc-macro2",
  "quote",
  "syn 2.0.119",
@@ -8505,7 +8399,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b570b25f7617e43d59005d0990ccb79e950a423952cea19671b7a876da390adf"
 dependencies = [
  "anyhow",
- "itertools 0.14.0",
+ "itertools 0.10.5",
  "proc-macro2",
  "quote",
  "syn 2.0.119",
@@ -8832,7 +8726,7 @@ dependencies = [
  "once_cell",
  "socket2",
  "tracing",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -9066,15 +8960,6 @@ dependencies = [
  "syn 2.0.119",
 ]
 
-[[package]]
-name = "redb"
-version = "4.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb338a6c67830a61bed824b78c2bb034ab1ff401a20616bd7957524f4fdc2f22"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "redis"
 version = "1.7.1"
@@ -9547,9 +9432,9 @@ dependencies = [
 
 [[package]]
 name = "rust-embed"
-version = "8.12.0"
+version = "8.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9e7760e252aaba7b09f4be00e36476cf585bdb68a53552ac954cdf504ab4bc9"
+checksum = "19afa5b4b6a611de00bd1bdae6ae6f39084c9399f0679c3f52d8469cf335cc23"
 dependencies = [
  "rust-embed-impl",
  "rust-embed-utils",
@@ -9558,9 +9443,9 @@ dependencies = [
 
 [[package]]
 name = "rust-embed-impl"
-version = "8.12.0"
+version = "8.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3bcfc4d6f53af43755f7a723e4b6b8794fcce052a178dd8c6c1dadc5f5343097"
+checksum = "e0d8afda6374eac59e066abee06d265247ebbaf3006cf878e2879e8356e34053"
 dependencies = [
  "mime_guess",
  "proc-macro2",
@@ -9573,31 +9458,14 @@ dependencies = [
 
 [[package]]
 name = "rust-embed-utils"
-version = "8.12.0"
+version = "8.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42ffa149f6aa81b58a5b3011d01a857c4ed12c7a732d2c51947a4c7c692185f0"
+checksum = "0d84e8ba78bd384263e5922f084cbe1b081c3b7e69add59c8fb097b879ba968a"
 dependencies = [
  "sha2 0.11.0",
  "walkdir",
 ]
 
-[[package]]
-name = "rust_decimal"
-version = "1.43.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7653272e75dcac41dc199fbea6f5797633994fafd339943c06c9af16bf29cd3a"
-dependencies = [
- "arrayvec",
- "borsh",
- "bytes",
- "num-traits",
- "rand 0.8.8",
- "rand 0.9.5",
- "serde",
- "serde_json",
- "wasm-bindgen",
-]
-
 [[package]]
 name = "rustc-demangle"
 version = "0.1.28"
@@ -9800,21 +9668,6 @@ dependencies = [
  "url",
 ]
 
-[[package]]
-name = "rustfs-capture-authority"
-version = "1.0.1"
-dependencies = [
- "openraft",
- "redb",
- "serde",
- "serde_json",
- "sha2 0.11.0",
- "tempfile",
- "thiserror 2.0.21",
- "tokio",
- "url",
-]
-
 [[package]]
 name = "rustfs-checksums"
 version = "1.0.1"
@@ -9835,6 +9688,7 @@ dependencies = [
 name = "rustfs-common"
 version = "1.0.1"
 dependencies = [
+ "arc-swap",
  "hotpath",
  "metrics",
  "smallvec",
@@ -10194,6 +10048,7 @@ dependencies = [
  "tokio",
  "tokio-util",
  "tracing",
+ "tracing-subscriber",
  "url",
 ]
 
@@ -10433,7 +10288,6 @@ dependencies = [
  "reqwest",
  "rmp-serde",
  "rustfs-signer",
- "s3s",
  "serde",
  "serde_json",
  "sysinfo",
@@ -10622,7 +10476,6 @@ dependencies = [
  "tokio",
  "tracing",
  "tracing-subscriber",
- "uuid",
 ]
 
 [[package]]
@@ -10659,6 +10512,7 @@ dependencies = [
  "rustfs-keystone",
  "rustfs-policy",
  "rustfs-rio",
+ "rustfs-s3-types",
  "rustfs-storage-api",
  "rustfs-test-utils",
  "rustfs-tls-runtime",
@@ -10673,6 +10527,7 @@ dependencies = [
  "sha2 0.11.0",
  "socket2",
  "subtle",
+ "sync_wrapper",
  "tempfile",
  "thiserror 2.0.21",
  "time",
@@ -10820,6 +10675,7 @@ dependencies = [
  "rustfs-checksums",
  "rustfs-config",
  "rustfs-rio",
+ "rustfs-s3-types",
  "rustfs-signer",
  "rustfs-storage-api",
  "rustfs-tls-runtime",
@@ -10853,9 +10709,19 @@ dependencies = [
 name = "rustfs-s3-types"
 version = "1.0.1"
 dependencies = [
+ "bytes",
+ "futures-core",
  "hotpath",
+ "http 1.5.0",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-util",
+ "pin-project-lite",
+ "s3s",
  "serde",
  "serde_json",
+ "tokio",
 ]
 
 [[package]]
@@ -10879,6 +10745,7 @@ dependencies = [
  "parking_lot",
  "rustfs-common",
  "rustfs-ecstore",
+ "rustfs-s3-types",
  "rustfs-storage-api",
  "rustfs-test-utils",
  "s3s",
@@ -10992,9 +10859,10 @@ dependencies = [
  "bytes",
  "hotpath",
  "http 1.5.0",
+ "http-body",
  "hyper",
+ "rustfs-s3-types",
  "rustfs-utils",
- "s3s",
  "serde_urlencoded",
  "thiserror 2.0.21",
  "time",
@@ -11052,7 +10920,6 @@ dependencies = [
  "rustfs-utils",
  "rustls",
  "rustls-native-certs",
- "s3s",
  "serde",
  "serde_json",
  "sha2 0.11.0",
@@ -11106,6 +10973,7 @@ dependencies = [
  "thiserror 2.0.21",
  "tokio",
  "tracing",
+ "x509-parser",
 ]
 
 [[package]]
@@ -11276,7 +11144,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -11359,7 +11227,7 @@ dependencies = [
  "security-framework",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -12630,10 +12498,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
 dependencies = [
  "fastrand",
- "getrandom 0.4.3",
+ "getrandom 0.3.4",
  "once_cell",
  "rustix",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -13196,16 +13064,6 @@ dependencies = [
  "tracing-subscriber",
 ]
 
-[[package]]
-name = "tracing-futures"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97d095ae15e245a057c8e8451bab9b3ee1e1f68e9ba2b4fbc18d0ac5237835f2"
-dependencies = [
- "pin-project",
- "tracing",
-]
-
 [[package]]
 name = "tracing-log"
 version = "0.2.0"
@@ -13356,7 +13214,7 @@ checksum = "79acf4b257aa56dd7f00466a81693d6c79c362c55092b3137909d6e76249ad80"
 dependencies = [
  "async-trait",
  "chrono",
- "derive_more 2.1.1",
+ "derive_more",
  "libc",
  "md-5 0.10.6",
  "thiserror 2.0.21",
@@ -13456,12 +13314,6 @@ version = "2.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
 
-[[package]]
-name = "utf8-width"
-version = "0.1.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "159a7cadce548703edd50d24069bc294c5415ecab0a480e0cd1ca06d112dc94a"
-
 [[package]]
 name = "utf8_iter"
 version = "1.0.4"
@@ -13488,15 +13340,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "validit"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4417835826b78aa6265724624d424df2b1e6e71a33329227d8b04a88950780dc"
-dependencies = [
- "anyerror",
-]
-
 [[package]]
 name = "valuable"
 version = "0.1.1"
@@ -13752,7 +13595,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]

Cargo.toml

@@ -18,7 +18,6 @@ members = [
     "crates/audit", # Audit target management system with multi-target fan-out
     "crates/checksums", # client checksums
     "crates/common", # Shared utilities and data structures
-    "crates/capture-authority", # Durable capture authority storage
     "crates/data-usage", # Shared data usage models and algorithms
     "crates/config", # Configuration management
     "crates/connect-symbol-catalog", # Release-only CPU profile symbol catalog generator
@@ -49,7 +48,7 @@ members = [
     "crates/replication", # Replication contracts and wire formats
     "crates/concurrency", # Concurrency management for RustFS - timeout, locking, backpressure, and I/O scheduling
     "crates/s3-client", # S3 client for engine-side consumption of remote S3 endpoints (tiering, transition targets)
-    "crates/s3-types", # S3 event type definitions
+    "crates/s3-types", # S3 event and error type definitions
     "crates/s3-ops", # S3 operation definitions and mapping
     "crates/s3select-api", # S3 Select API interface
     "crates/s3select-query", # S3 Select query engine
@@ -315,8 +314,6 @@ ratelimit = "2.0.0"
 rayon = "1.12.0"
 rustfs-erasure-codec = { version = "9.0.0" }
 reed-solomon-simd = "3.1.0"
-openraft = { version = "=0.9.25", default-features = false, features = ["serde"] }
-redb = "=4.3.0"
 regex = { version = "1.13.1" }
 rumqttc = { package = "rumqttc-next", version = "0.34.0" }
 redis = { version = "1.7.1" }
@@ -326,6 +323,10 @@ rust-embed = { version = "8.12.0" }
 rustc-hash = { version = "2.1.3" }
 s3s = { git = "https://github.com/s3s-project/s3s", rev = "5761ddfe4c509fcac87e3b99fd5bd9e176b442c0", features = ["minio"] }
 s3s-sigv4 = { git = "https://github.com/s3s-project/s3s", rev = "5761ddfe4c509fcac87e3b99fd5bd9e176b442c0" }
+# The same s3s pin under the name the legacy edge of the gateway migration uses
+# (crates/s3-types, feature `compat-s3s`). Keep `rev` identical to `s3s` above.
+# DELETE BY T4.2 (rustfs/backlog#2784).
+legacy-s3s = { package = "s3s", git = "https://github.com/s3s-project/s3s", rev = "5761ddfe4c509fcac87e3b99fd5bd9e176b442c0", features = ["minio"] }
 serial_test = "4.0.1"
 shadow-rs = { default-features = false, version = "2.0.0" }
 siphasher = "1.0.4"
@@ -334,6 +335,7 @@ compact_str = "0.10.0"
 snap = "1.1.2"
 starshard = { version = "2.4.0" }
 strum = { version = "0.28.0" }
+sync_wrapper = "1.0.2"
 sysinfo = "0.39.6"
 temp-env = "0.3.6"
 tempfile = "3.27.0"

crates/capture-authority/Cargo.toml

@@ -1,24 +0,0 @@
-[package]
-name = "rustfs-capture-authority"
-version.workspace = true
-edition.workspace = true
-license.workspace = true
-rust-version.workspace = true
-repository.workspace = true
-description = "Durable local storage for capture authority"
-
-[dependencies]
-openraft = { workspace = true }
-redb = { workspace = true }
-sha2 = { workspace = true }
-serde = { workspace = true, features = ["derive"] }
-thiserror = { workspace = true }
-tokio = { workspace = true }
-url = { workspace = true }
-
-[dev-dependencies]
-serde_json = { workspace = true }
-tempfile = { workspace = true }
-
-[lints]
-workspace = true

crates/capture-authority/src/application.rs

@@ -1,862 +0,0 @@
-fn read_native_range_in<R: std::ops::RangeBounds<u64>>(
-    tx: &redb::ReadTransaction,
-    range: R,
-) -> Result<Vec<crate::CaptureRaftEntry>, StoreError> {
-    use std::ops::Bound::{Excluded, Included, Unbounded};
-    let logs = tx.open_table(LOGS)?;
-    let start = match range.start_bound() {
-        Included(value) => *value,
-        Excluded(value) => match value.checked_add(1) {
-            Some(value) => value,
-            None => return Ok(Vec::new()),
-        },
-        Unbounded => 0,
-    };
-    let end = match range.end_bound() {
-        Included(value) => *value,
-        Excluded(value) => match value.checked_sub(1) {
-            Some(value) => value,
-            None => return Ok(Vec::new()),
-        },
-        Unbounded => u64::MAX,
-    };
-    if start > end {
-        return Ok(Vec::new());
-    }
-    let mut entries = Vec::new();
-    for row in logs.range(start..=end)? {
-        let (key, value) = row?;
-        let entry = decode_log(value.value())?;
-        if entry.id.index != key.value() {
-            return Err(StoreError::CorruptRecord);
-        }
-        entries.push(decode_native_entry(entry)?);
-    }
-    Ok(entries)
-}
-
-use crate::{
-    LOGS, LogId, META, Store, StoreError, committed::validate_committed, created::*, decode_log, encode_id, encode_log,
-    next_index, number,
-};
-use redb::{ReadTransaction, ReadableDatabase, ReadableTable, ReadableTableMetadata, TableDefinition};
-use std::collections::BTreeMap;
-
-pub(crate) const HEADS: TableDefinition<&[u8], &[u8]> = TableDefinition::new("heads");
-pub(crate) const VERSIONS: TableDefinition<&[u8], &[u8]> = TableDefinition::new("versions");
-pub(crate) const EVENTS: TableDefinition<&[u8], &[u8]> = TableDefinition::new("events");
-pub(crate) const OPERATIONS: TableDefinition<&[u8], &[u8]> = TableDefinition::new("operations");
-pub(crate) const APPLY_RESULTS: TableDefinition<u64, &[u8]> = TableDefinition::new("apply_results");
-
-fn version_key(object: &ObjectIdentity, version: [u8; 16]) -> Result<Vec<u8>, StoreError> {
-    let mut b = object_bytes(object)?;
-    b.extend(version);
-    Ok(b)
-}
-fn decode_version(b: &[u8]) -> Result<CreatedVersion, StoreError> {
-    let mut d = Decoder::new(b);
-    let v = CreatedVersion {
-        prepared: d.prepared()?,
-        decision_log_id: d.id()?,
-        binding_revision: d.u64()?,
-    };
-    d.finish()?;
-    Ok(v)
-}
-fn decode_event(b: &[u8]) -> Result<CreatedEvent, StoreError> {
-    let mut d = Decoder::new(b);
-    let e = CreatedEvent {
-        object: d.object()?,
-        prepared: d.prepared()?,
-        decision_log_id: d.id()?,
-        binding: d.binding()?,
-    };
-    d.finish()?;
-    Ok(e)
-}
-fn decode_operation(b: &[u8]) -> Result<CreatedOperation, StoreError> {
-    let mut d = Decoder::new(b);
-    let len = usize::try_from(d.u64()?).map_err(|_| StoreError::CorruptRecord)?;
-    let command = b
-        .get(8..8usize.checked_add(len).ok_or(StoreError::CorruptRecord)?)
-        .ok_or(StoreError::CorruptRecord)?;
-    DecideCreated::decode(command)?;
-    let mut d = Decoder::new(&b[8 + len..]);
-    let result = d.result()?;
-    d.finish()?;
-    Ok(CreatedOperation {
-        canonical_command: command.to_vec(),
-        result,
-    })
-}
-fn decode_apply(b: &[u8]) -> Result<CreatedApplyResult, StoreError> {
-    let mut d = Decoder::new(b);
-    let r = CreatedApplyResult {
-        log_id: d.id()?,
-        result: d.result()?,
-    };
-    d.finish()?;
-    Ok(r)
-}
-fn read_binding(meta: &impl ReadableTable<&'static str, &'static [u8]>) -> Result<CaptureBinding, StoreError> {
-    let b = meta.get("capture_binding")?.ok_or(StoreError::BindingNotPinned)?;
-    let mut d = Decoder::new(b.value());
-    let binding = d.binding()?;
-    d.finish()?;
-    Ok(binding)
-}
-fn read_applied(meta: &impl ReadableTable<&'static str, &'static [u8]>) -> Result<Option<LogId>, StoreError> {
-    let b = meta.get("last_applied")?.ok_or(StoreError::CorruptRecord)?;
-    let mut d = Decoder::new(b.value());
-    let id = match d.take::<1>()?[0] {
-        0 => None,
-        1 => Some(d.id()?),
-        _ => return Err(StoreError::CorruptRecord),
-    };
-    d.finish()?;
-    Ok(id)
-}
-fn required<T>(value: Option<T>) -> Result<T, StoreError> {
-    value.ok_or(StoreError::CorruptRecord)
-}
-fn encode_native_entry(entry: &crate::CaptureRaftEntry) -> Result<Vec<u8>, StoreError> {
-    let id: LogId = entry.log_id.into();
-    let (kind, body) = match &entry.payload {
-        openraft::EntryPayload::Blank => (0, vec![]),
-        openraft::EntryPayload::Normal(command) => (1, command.created().encode()?),
-        openraft::EntryPayload::Membership(membership) => {
-            let stored = openraft::StoredMembership::new(Some(entry.log_id), membership.clone());
-            let checked = crate::CaptureMembership::try_from(&stored)?;
-            (2, checked.encode()?)
-        }
-    };
-    let mut payload = b"CENR\x01".to_vec();
-    payload.push(kind);
-    payload.extend(
-        u64::try_from(body.len())
-            .map_err(|_| StoreError::CorruptRecord)?
-            .to_be_bytes(),
-    );
-    payload.extend(body);
-    encode_log(&crate::LogEntry { id, payload })
-}
-
-pub(crate) fn decode_native_entry(entry: crate::LogEntry) -> Result<crate::CaptureRaftEntry, StoreError> {
-    let bytes = &entry.payload;
-    if bytes.len() < 14 || &bytes[..5] != b"CENR\x01" {
-        return Err(StoreError::CorruptRecord);
-    }
-    let length = usize::try_from(number(&bytes[6..14])?).map_err(|_| StoreError::CorruptRecord)?;
-    let body = &bytes[14..];
-    if length != body.len() {
-        return Err(StoreError::CorruptRecord);
-    }
-    let payload = match bytes[5] {
-        0 if body.is_empty() => openraft::EntryPayload::Blank,
-        1 => openraft::EntryPayload::Normal(crate::CaptureCommand::try_created(DecideCreated::decode(body)?)?),
-        2 => {
-            let membership = crate::CaptureMembership::decode(body).map_err(|_| StoreError::CorruptRecord)?;
-            if *membership.log_id() != Some(entry.id) {
-                return Err(StoreError::CorruptRecord);
-            }
-            let stored = openraft::StoredMembership::try_from(&membership).map_err(|_| StoreError::CorruptRecord)?;
-            openraft::EntryPayload::Membership(stored.membership().clone())
-        }
-        _ => return Err(StoreError::CorruptRecord),
-    };
-    Ok(crate::CaptureRaftEntry {
-        log_id: entry.id.into(),
-        payload,
-    })
-}
-
-fn apply_created(
-    tx: &redb::WriteTransaction,
-    id: LogId,
-    command: &DecideCreated,
-    canonical: &[u8],
-    binding: &CaptureBinding,
-) -> Result<CreatedResult, StoreError> {
-    let mut operations = tx.open_table(OPERATIONS)?;
-    let existing = operations
-        .get(command.operation_id.as_slice())?
-        .map(|v| decode_operation(v.value()))
-        .transpose()?;
-    let result = if let Some(existing) = existing {
-        if existing.canonical_command == canonical {
-            existing.result
-        } else {
-            CreatedResult::OperationConflict
-        }
-    } else {
-        let mut heads = tx.open_table(HEADS)?;
-        let mut versions = tx.open_table(VERSIONS)?;
-        let object = object_bytes(&command.object)?;
-        let key = version_key(&command.object, command.prepared.version_id)?;
-        let actual = heads
-            .get(object.as_slice())?
-            .map(|v| {
-                let mut d = Decoder::new(v.value());
-                let id = d.uuid()?;
-                d.finish()?;
-                Ok::<_, StoreError>(id)
-            })
-            .transpose()?;
-        let outcome = if command.binding_revision != binding.revision {
-            CreatedResult::BindingMismatch
-        } else if actual != command.expected_head {
-            CreatedResult::HeadMismatch { actual_head: actual }
-        } else if versions.get(key.as_slice())?.is_some() {
-            CreatedResult::VersionConflict
-        } else {
-            let mut version = Vec::new();
-            put_prepared(&mut version, &command.prepared);
-            version.extend(encode_id(id));
-            version.extend(binding.revision.to_be_bytes());
-            versions.insert(key.as_slice(), version.as_slice())?;
-            let mut event = object;
-            put_prepared(&mut event, &command.prepared);
-            event.extend(encode_id(id));
-            event.extend(binding_bytes(&binding)?);
-            tx.open_table(EVENTS)?
-                .insert(command.operation_id.as_slice(), event.as_slice())?;
-            heads.insert(object_bytes(&command.object)?.as_slice(), command.prepared.version_id.as_slice())?;
-            CreatedResult::Created {
-                version_id: command.prepared.version_id,
-                event_id: command.operation_id,
-                decision_log_id: id,
-            }
-        };
-        let mut op = u64::try_from(canonical.len())
-            .map_err(|_| StoreError::CorruptRecord)?
-            .to_be_bytes()
-            .to_vec();
-        op.extend(canonical);
-        op.extend(result_bytes(&outcome));
-        operations.insert(command.operation_id.as_slice(), op.as_slice())?;
-        outcome
-    };
-    Ok(result)
-}
-
-fn validate_response_kind(entry: &crate::CaptureRaftEntry, response: &crate::CaptureResponse) -> Result<(), StoreError> {
-    let kind = match entry.payload {
-        openraft::EntryPayload::Blank => crate::CaptureResponseKind::Blank,
-        openraft::EntryPayload::Normal(_) => crate::CaptureResponseKind::Created,
-        openraft::EntryPayload::Membership(_) => crate::CaptureResponseKind::Membership,
-    };
-    if response.kind() != kind || *response.log_id() != LogId::from(entry.log_id) {
-        return Err(StoreError::CorruptRecord);
-    }
-    Ok(())
-}
-fn encode_response(response: &crate::CaptureResponse) -> Result<Vec<u8>, StoreError> {
-    let (kind, body) = match response.kind() {
-        crate::CaptureResponseKind::Blank => (0, vec![]),
-        crate::CaptureResponseKind::Created => (1, result_bytes(response.created_result().ok_or(StoreError::CorruptRecord)?)),
-        crate::CaptureResponseKind::Membership => (2, vec![]),
-    };
-    let mut bytes = b"CRSP\x01".to_vec();
-    bytes.push(kind);
-    bytes.extend(encode_id(*response.log_id()));
-    bytes.extend(
-        u64::try_from(body.len())
-            .map_err(|_| StoreError::CorruptRecord)?
-            .to_be_bytes(),
-    );
-    bytes.extend(body);
-    Ok(bytes)
-}
-fn decode_response(bytes: &[u8]) -> Result<crate::CaptureResponse, StoreError> {
-    if bytes.len() < 38
-        || &bytes[..5] != b"CRSP\x01"
-        || number(&bytes[30..38])? != u64::try_from(bytes.len() - 38).map_err(|_| StoreError::CorruptRecord)?
-    {
-        return Err(StoreError::CorruptRecord);
-    }
-    let id = crate::decode_id(&bytes[6..30])?;
-    match bytes[5] {
-        0 if bytes.len() == 38 => crate::CaptureResponse::blank(id),
-        1 => {
-            let mut body = encode_id(id);
-            body.extend(&bytes[38..]);
-            crate::CaptureResponse::created(decode_apply(&body)?)
-        }
-        2 if bytes.len() == 38 => crate::CaptureResponse::membership(id),
-        _ => Err(StoreError::CorruptRecord),
-    }
-}
-fn entry_command(entry: &crate::LogEntry, native: bool) -> Result<DecideCreated, StoreError> {
-    if native {
-        match decode_native_entry(entry.clone())?.payload {
-            openraft::EntryPayload::Normal(command) => Ok(command.created().clone()),
-            _ => Err(StoreError::CorruptRecord),
-        }
-    } else {
-        DecideCreated::decode(&entry.payload)
-    }
-}
-
-pub(crate) fn native_application_state(tx: &ReadTransaction) -> Result<(Option<LogId>, crate::CaptureMembership), StoreError> {
-    let meta = tx.open_table(META)?;
-    if number(required(meta.get("schema")?)?.value())? != 4 {
-        return Err(StoreError::UnsupportedSchema);
-    }
-    let last = read_applied(&meta)?;
-    let membership = crate::CaptureMembership::decode(required(meta.get("native_membership")?)?.value())
-        .map_err(|_| StoreError::CorruptRecord)?;
-    if membership
-        .log_id()
-        .is_some_and(|id| last.is_none_or(|last| id.index > last.index))
-    {
-        return Err(StoreError::CorruptRecord);
-    }
-    Ok((last, membership))
-}
-
-impl Store {
-    /// Explicitly opt an empty, bound store into native entry persistence.
-    pub fn enable_native_empty(&mut self) -> Result<(), StoreError> {
-        let tx = self.write_transaction()?;
-        {
-            let mut meta = tx.open_table(META)?;
-            let schema = number(required(meta.get("schema")?)?.value())?;
-            if !matches!(schema, 3 | 4) {
-                return Err(StoreError::UnsupportedSchema);
-            }
-            read_binding(&meta)?;
-            if schema == 4 {
-                let membership = crate::CaptureMembership::decode(required(meta.get("native_membership")?)?.value())
-                    .map_err(|_| StoreError::CorruptRecord)?;
-                let last = read_applied(&meta)?;
-                if membership
-                    .log_id()
-                    .is_some_and(|id| last.is_none_or(|last| id.index > last.index))
-                    || (last.is_none() && (!membership.configs().is_empty() || !membership.nodes().is_empty()))
-                {
-                    return Err(StoreError::CorruptRecord);
-                }
-                return Ok(());
-            }
-            if read_applied(&meta)?.is_some() || !tx.open_table(LOGS)?.is_empty()? {
-                return Err(StoreError::UnsupportedSchema);
-            }
-            for table in [HEADS, VERSIONS, EVENTS, OPERATIONS] {
-                if !tx.open_table(table)?.is_empty()? {
-                    return Err(StoreError::UnsupportedSchema);
-                }
-            }
-            if !tx.open_table(APPLY_RESULTS)?.is_empty()? || meta.get("committed")?.is_some() || meta.get("tail")?.is_some() {
-                return Err(StoreError::UnsupportedSchema);
-            }
-            if meta.get("native_membership")?.is_some() {
-                return Err(StoreError::CorruptRecord);
-            }
-            let membership = crate::CaptureMembership::new(None, vec![], BTreeMap::new())?;
-            meta.insert("native_membership", membership.encode()?.as_slice())?;
-            meta.insert("schema", 4u64.to_be_bytes().as_slice())?;
-        }
-        self.commit(tx)
-    }
-    pub fn append_native(&mut self, entries: &[crate::CaptureRaftEntry]) -> Result<(), StoreError> {
-        let tx = self.write_transaction()?;
-        {
-            let mut meta = tx.open_table(META)?;
-            if number(required(meta.get("schema")?)?.value())? != 4 {
-                return Err(StoreError::UnsupportedSchema);
-            }
-            if entries.is_empty() {
-                return Ok(());
-            }
-            let tail = meta.get("tail")?.map(|value| crate::decode_id(value.value())).transpose()?;
-            let mut next = next_index(tail.map(|id| id.index))?;
-            let mut encoded = Vec::with_capacity(entries.len());
-            for (position, entry) in entries.iter().enumerate() {
-                if entry.log_id.index != next {
-                    return Err(StoreError::InvalidLogSequence);
-                }
-                encoded.push(encode_native_entry(entry)?);
-                if position + 1 < entries.len() {
-                    next = next_index(Some(next))?;
-                }
-            }
-            let mut logs = tx.open_table(LOGS)?;
-            for (entry, bytes) in entries.iter().zip(&encoded) {
-                logs.insert(entry.log_id.index, bytes.as_slice())?;
-            }
-            let last = entries.last().ok_or(StoreError::InvalidLogSequence)?;
-            meta.insert("tail", encode_id(last.log_id.into()).as_slice())?;
-        }
-        self.commit(tx)
-    }
-    pub fn read_native_entry(&self, index: u64) -> Result<Option<crate::CaptureRaftEntry>, StoreError> {
-        let tx = self.database.begin_read()?;
-        if number(required(tx.open_table(META)?.get("schema")?)?.value())? != 4 {
-            return Err(StoreError::UnsupportedSchema);
-        }
-        tx.open_table(LOGS)?
-            .get(index)?
-            .map(|value| {
-                let entry = decode_log(value.value())?;
-                if entry.id.index != index {
-                    return Err(StoreError::CorruptRecord);
-                }
-                decode_native_entry(entry)
-            })
-            .transpose()
-    }
-    /// Read typed native entries within the requested bounds.
-    pub fn read_native_range<R: std::ops::RangeBounds<u64>>(&self, range: R) -> Result<Vec<crate::CaptureRaftEntry>, StoreError> {
-        let tx = self.database.begin_read()?;
-        if number(required(tx.open_table(META)?.get("schema")?)?.value())? != 4 {
-            return Err(StoreError::UnsupportedSchema);
-        }
-        read_native_range_in(&tx, range)
-    }
-    pub fn read_native_entries(&self, start: u64, end: u64) -> Result<Vec<crate::CaptureRaftEntry>, StoreError> {
-        let tx = self.database.begin_read()?;
-        if number(required(tx.open_table(META)?.get("schema")?)?.value())? != 4 {
-            return Err(StoreError::UnsupportedSchema);
-        }
-        if start > end {
-            return Err(StoreError::InvalidLogSequence);
-        }
-        read_native_range_in(&tx, start..end)
-    }
-
-    pub fn apply_next_native(&mut self, id: LogId) -> Result<crate::CaptureResponse, StoreError> {
-        let tx = self.write_transaction()?;
-        let response;
-        {
-            let mut meta = tx.open_table(META)?;
-            if number(required(meta.get("schema")?)?.value())? != 4 {
-                return Err(StoreError::UnsupportedSchema);
-            }
-            let binding = read_binding(&meta)?;
-            let logs = tx.open_table(LOGS)?;
-            let committed = validate_committed(&meta, &logs)?.ok_or(StoreError::InvalidCommittedLog)?;
-            let entry = decode_log(required(logs.get(id.index)?)?.value())?;
-            if entry.id != id || id.index > committed.index {
-                return Err(StoreError::InvalidCommittedLog);
-            }
-            let native = decode_native_entry(entry)?;
-            let last = read_applied(&meta)?;
-            let mut results = tx.open_table(APPLY_RESULTS)?;
-            if last.is_some_and(|last| id.index <= last.index) {
-                let saved = decode_response(required(results.get(id.index)?)?.value())?;
-                if *saved.log_id() != id {
-                    return Err(StoreError::InvalidApplySequence);
-                }
-                validate_response_kind(&native, &saved)?;
-                return Ok(saved);
-            }
-            if id.index != next_index(last.map(|last| last.index))? {
-                return Err(StoreError::InvalidApplySequence);
-            }
-            response = match native.payload {
-                openraft::EntryPayload::Blank => crate::CaptureResponse::blank(id)?,
-                openraft::EntryPayload::Normal(command) => {
-                    let canonical = command.created().encode()?;
-                    let result = apply_created(&tx, id, command.created(), &canonical, &binding)?;
-                    crate::CaptureResponse::created(CreatedApplyResult { log_id: id, result })?
-                }
-                openraft::EntryPayload::Membership(membership) => {
-                    let stored = openraft::StoredMembership::new(Some(id.into()), membership);
-                    let checked = crate::CaptureMembership::try_from(&stored)?;
-                    meta.insert("native_membership", checked.encode()?.as_slice())?;
-                    crate::CaptureResponse::membership(id)?
-                }
-            };
-            results.insert(id.index, encode_response(&response)?.as_slice())?;
-            let mut last = vec![1];
-            last.extend(encode_id(id));
-            meta.insert("last_applied", last.as_slice())?;
-        }
-        self.commit(tx)?;
-        Ok(response)
-    }
-    pub fn native_apply_response(&self, index: u64) -> Result<Option<crate::CaptureResponse>, StoreError> {
-        let tx = self.database.begin_read()?;
-        if number(required(tx.open_table(META)?.get("schema")?)?.value())? != 4 {
-            return Err(StoreError::UnsupportedSchema);
-        }
-        let results = tx.open_table(APPLY_RESULTS)?;
-        results.get(index)?.map(|v| decode_response(v.value())).transpose()
-    }
-    pub fn native_application_state(&self) -> Result<(Option<LogId>, crate::CaptureMembership), StoreError> {
-        native_application_state(&self.database.begin_read()?)
-    }
-    /// Bootstrap the immutable capture policy. The caller must be the trusted
-    /// deployment provisioning owner. This crate does not authenticate callers;
-    /// do not expose this public method through an ordinary object request API.
-    /// Prepared identities assert identity only, not physical data durability.
-    pub fn pin_capture_binding(&mut self, binding: CaptureBinding) -> Result<(), StoreError> {
-        let encoded = binding_bytes(&binding)?;
-        let tx = self.write_transaction()?;
-        {
-            let mut meta = tx.open_table(META)?;
-            if matches!(number(required(meta.get("schema")?)?.value())?, 3 | 4) {
-                if read_binding(&meta)? == binding {
-                    return Ok(());
-                }
-                return Err(StoreError::BindingConflict);
-            }
-            if meta.get("capture_binding")?.is_some() || meta.get("last_applied")?.is_some() {
-                return Err(StoreError::CorruptRecord);
-            }
-            for table in [HEADS, VERSIONS, EVENTS, OPERATIONS] {
-                if !tx.open_table(table)?.is_empty()? {
-                    return Err(StoreError::CorruptRecord);
-                }
-            }
-            if !tx.open_table(APPLY_RESULTS)?.is_empty()? {
-                return Err(StoreError::CorruptRecord);
-            }
-            meta.insert("capture_binding", encoded.as_slice())?;
-            meta.insert("last_applied", &[0][..])?;
-            meta.insert("schema", 3u64.to_be_bytes().as_slice())?;
-        }
-        self.commit(tx)
-    }
-    /// Apply the next exact persisted committed Created command atomically.
-    pub fn apply_next_created(&mut self, id: LogId) -> Result<CreatedResult, StoreError> {
-        let tx = self.write_transaction()?;
-        let result;
-        {
-            let mut meta = tx.open_table(META)?;
-            if number(required(meta.get("schema")?)?.value())? != 3 {
-                return Err(StoreError::UnsupportedSchema);
-            }
-            let binding = read_binding(&meta)?;
-            let logs = tx.open_table(LOGS)?;
-            let committed = validate_committed(&meta, &logs)?.ok_or(StoreError::InvalidCommittedLog)?;
-            let entry = decode_log(required(logs.get(id.index)?)?.value())?;
-            if entry.id != id || id.index > committed.index {
-                return Err(StoreError::InvalidCommittedLog);
-            }
-            let last = read_applied(&meta)?;
-            let mut results = tx.open_table(APPLY_RESULTS)?;
-            if last.is_some_and(|last| id.index <= last.index) {
-                let saved = decode_apply(required(results.get(id.index)?)?.value())?;
-                if saved.log_id != id {
-                    return Err(StoreError::InvalidApplySequence);
-                }
-                return Ok(saved.result);
-            }
-            if id.index != next_index(last.map(|last| last.index))? {
-                return Err(StoreError::InvalidApplySequence);
-            }
-            let command = DecideCreated::decode(&entry.payload)?;
-            result = apply_created(&tx, id, &command, &entry.payload, &binding)?;
-            let mut applied = encode_id(id);
-            applied.extend(result_bytes(&result));
-            results.insert(id.index, applied.as_slice())?;
-            let mut last = vec![1];
-            last.extend(encode_id(id));
-            meta.insert("last_applied", last.as_slice())?;
-        }
-        self.commit(tx)?;
-        Ok(result)
-    }
-    pub fn capture_binding(&self) -> Result<Option<CaptureBinding>, StoreError> {
-        let tx = self.database.begin_read()?;
-        let meta = tx.open_table(META)?;
-        if !matches!(number(required(meta.get("schema")?)?.value())?, 3 | 4) {
-            return Ok(None);
-        }
-        Ok(Some(read_binding(&meta)?))
-    }
-    pub fn last_applied(&self) -> Result<Option<LogId>, StoreError> {
-        let tx = self.database.begin_read()?;
-        let meta = tx.open_table(META)?;
-        if !matches!(number(required(meta.get("schema")?)?.value())?, 3 | 4) {
-            return Ok(None);
-        }
-        read_applied(&meta)
-    }
-    pub fn created_head(&self, object: &ObjectIdentity) -> Result<Option<[u8; 16]>, StoreError> {
-        let tx = self.database.begin_read()?;
-        let t = tx.open_table(HEADS)?;
-        t.get(object_bytes(object)?.as_slice())?
-            .map(|v| {
-                let mut d = Decoder::new(v.value());
-                let id = d.uuid()?;
-                d.finish()?;
-                Ok(id)
-            })
-            .transpose()
-    }
-    pub fn created_version(&self, object: &ObjectIdentity, version: [u8; 16]) -> Result<Option<CreatedVersion>, StoreError> {
-        let tx = self.database.begin_read()?;
-        let t = tx.open_table(VERSIONS)?;
-        t.get(version_key(object, version)?.as_slice())?
-            .map(|v| decode_version(v.value()))
-            .transpose()
-    }
-    pub fn created_event(&self, operation: [u8; 16]) -> Result<Option<CreatedEvent>, StoreError> {
-        let tx = self.database.begin_read()?;
-        let t = tx.open_table(EVENTS)?;
-        t.get(operation.as_slice())?.map(|v| decode_event(v.value())).transpose()
-    }
-    pub fn created_operation(&self, operation: [u8; 16]) -> Result<Option<CreatedOperation>, StoreError> {
-        let tx = self.database.begin_read()?;
-        let t = tx.open_table(OPERATIONS)?;
-        t.get(operation.as_slice())?.map(|v| decode_operation(v.value())).transpose()
-    }
-    pub fn created_apply_result(&self, index: u64) -> Result<Option<CreatedApplyResult>, StoreError> {
-        let tx = self.database.begin_read()?;
-        let t = tx.open_table(APPLY_RESULTS)?;
-        if number(required(tx.open_table(META)?.get("schema")?)?.value())? == 4 {
-            t.get(index)?
-                .map(|v| {
-                    decode_response(v.value()).map(|r| {
-                        r.created_result().cloned().map(|result| CreatedApplyResult {
-                            log_id: *r.log_id(),
-                            result,
-                        })
-                    })
-                })
-                .transpose()
-                .map(Option::flatten)
-        } else {
-            t.get(index)?.map(|v| decode_apply(v.value())).transpose()
-        }
-    }
-}
-
-pub(crate) fn validate_application(tx: &ReadTransaction) -> Result<(), StoreError> {
-    let meta = tx.open_table(META)?;
-    let schema = number(required(meta.get("schema")?)?.value())?;
-    let native = schema == 4;
-    if !matches!(schema, 3 | 4) {
-        return Ok(());
-    }
-    let binding = read_binding(&meta).map_err(|error| match error {
-        StoreError::BindingNotPinned => StoreError::CorruptRecord,
-        other => other,
-    })?;
-    let last = read_applied(&meta)?;
-    let logs = tx.open_table(LOGS)?;
-    let committed = validate_committed(&meta, &logs)?;
-    let heads = tx.open_table(HEADS)?;
-    let versions = tx.open_table(VERSIONS)?;
-    let events = tx.open_table(EVENTS)?;
-    let operations = tx.open_table(OPERATIONS)?;
-    let results = tx.open_table(APPLY_RESULTS)?;
-    if last.is_some_and(|last| committed.is_none_or(|c| last.index > c.index)) {
-        return Err(StoreError::CorruptRecord);
-    }
-    let mut next = Some(0);
-    let mut observed = None;
-    let mut first_operations = BTreeMap::new();
-    let mut expected_membership = crate::CaptureMembership::new(None, vec![], BTreeMap::new())?;
-    let mut replay_operations = BTreeMap::<[u8; 16], (Vec<u8>, CreatedResult)>::new();
-    let mut replay_heads = BTreeMap::<Vec<u8>, [u8; 16]>::new();
-    let mut replay_versions = std::collections::BTreeSet::new();
-    for row in results.iter()? {
-        let (k, v) = row?;
-        let entry = decode_log(required(logs.get(k.value())?)?.value())?;
-        let r = if native {
-            let response = decode_response(v.value())?;
-            let native_entry = decode_native_entry(entry.clone())?;
-            validate_response_kind(&native_entry, &response)?;
-            if next != Some(k.value()) || response.log_id().index != k.value() {
-                return Err(StoreError::CorruptRecord);
-            }
-            observed = Some(*response.log_id());
-            next = k.value().checked_add(1);
-            match native_entry.payload {
-                openraft::EntryPayload::Membership(membership) => {
-                    expected_membership =
-                        crate::CaptureMembership::try_from(&openraft::StoredMembership::new(Some(entry.id.into()), membership))?;
-                    continue;
-                }
-                openraft::EntryPayload::Blank => continue,
-                openraft::EntryPayload::Normal(_) => CreatedApplyResult {
-                    log_id: *response.log_id(),
-                    result: response.created_result().cloned().ok_or(StoreError::CorruptRecord)?,
-                },
-            }
-        } else {
-            decode_apply(v.value())?
-        };
-        if !native && (next != Some(k.value()) || r.log_id.index != k.value()) {
-            return Err(StoreError::CorruptRecord);
-        }
-        if entry.id != r.log_id {
-            return Err(StoreError::CorruptRecord);
-        }
-        let c = entry_command(&entry, native)?;
-        let canonical = c.encode()?;
-        let op = decode_operation(required(operations.get(c.operation_id.as_slice())?)?.value())?;
-        let canonical_matches = op.canonical_command == canonical;
-        let expected = if canonical_matches {
-            op.result
-        } else {
-            CreatedResult::OperationConflict
-        };
-        if native {
-            let replay = if let Some((previous, result)) = replay_operations.get(&c.operation_id) {
-                if *previous == canonical {
-                    result.clone()
-                } else {
-                    CreatedResult::OperationConflict
-                }
-            } else {
-                let object = object_bytes(&c.object)?;
-                let key = version_key(&c.object, c.prepared.version_id)?;
-                let actual = replay_heads.get(&object).copied();
-                let result = if c.binding_revision != binding.revision {
-                    CreatedResult::BindingMismatch
-                } else if actual != c.expected_head {
-                    CreatedResult::HeadMismatch { actual_head: actual }
-                } else if replay_versions.contains(&key) {
-                    CreatedResult::VersionConflict
-                } else {
-                    replay_heads.insert(object, c.prepared.version_id);
-                    replay_versions.insert(key);
-                    CreatedResult::Created {
-                        version_id: c.prepared.version_id,
-                        event_id: c.operation_id,
-                        decision_log_id: r.log_id,
-                    }
-                };
-                replay_operations.insert(c.operation_id, (canonical.clone(), result.clone()));
-                result
-            };
-            if replay != r.result {
-                return Err(StoreError::CorruptRecord);
-            }
-        }
-        if expected != r.result {
-            return Err(StoreError::CorruptRecord);
-        }
-        if canonical_matches {
-            first_operations.entry(c.operation_id).or_insert(r.log_id);
-        }
-        observed = Some(r.log_id);
-        next = k.value().checked_add(1)
-    }
-    if observed != last {
-        return Err(StoreError::CorruptRecord);
-    }
-    if native {
-        if native_application_state(tx)?.1 != expected_membership
-            || heads.len()? != u64::try_from(replay_heads.len()).map_err(|_| StoreError::CorruptRecord)?
-            || versions.len()? != u64::try_from(replay_versions.len()).map_err(|_| StoreError::CorruptRecord)?
-        {
-            return Err(StoreError::CorruptRecord);
-        }
-        for (object, id) in replay_heads {
-            if required(heads.get(object.as_slice())?)?.value() != id {
-                return Err(StoreError::CorruptRecord);
-            }
-        }
-    }
-    for row in operations.iter()? {
-        let (k, v) = row?;
-        let op = decode_operation(v.value())?;
-        let c = DecideCreated::decode(&op.canonical_command)?;
-        if k.value() != c.operation_id {
-            return Err(StoreError::CorruptRecord);
-        }
-        let first = required(first_operations.get(&c.operation_id))?;
-        if let CreatedResult::Created {
-            version_id,
-            event_id,
-            decision_log_id,
-        } = op.result
-        {
-            if version_id != c.prepared.version_id
-                || event_id != c.operation_id
-                || c.binding_revision != binding.revision
-                || decision_log_id != *first
-            {
-                return Err(StoreError::CorruptRecord);
-            }
-            let event = decode_event(required(events.get(event_id.as_slice())?)?.value())?;
-            if event
-                != (CreatedEvent {
-                    object: c.object.clone(),
-                    prepared: c.prepared.clone(),
-                    decision_log_id,
-                    binding: binding.clone(),
-                })
-            {
-                return Err(StoreError::CorruptRecord);
-            }
-        } else if events.get(c.operation_id.as_slice())?.is_some() {
-            return Err(StoreError::CorruptRecord);
-        }
-    }
-    for row in events.iter()? {
-        let (k, v) = row?;
-        let e = decode_event(v.value())?;
-        if e.binding != binding {
-            return Err(StoreError::CorruptRecord);
-        }
-        let op = decode_operation(required(operations.get(k.value())?)?.value())?;
-        let c = DecideCreated::decode(&op.canonical_command)?;
-        if c.object != e.object
-            || c.prepared != e.prepared
-            || op.result
-                != (CreatedResult::Created {
-                    version_id: e.prepared.version_id,
-                    event_id: c.operation_id,
-                    decision_log_id: e.decision_log_id,
-                })
-        {
-            return Err(StoreError::CorruptRecord);
-        }
-        let version =
-            decode_version(required(versions.get(version_key(&e.object, e.prepared.version_id)?.as_slice())?)?.value())?;
-        if version
-            != (CreatedVersion {
-                prepared: e.prepared.clone(),
-                decision_log_id: e.decision_log_id,
-                binding_revision: binding.revision,
-            })
-        {
-            return Err(StoreError::CorruptRecord);
-        }
-    }
-    for row in versions.iter()? {
-        let (k, v) = row?;
-        let version = decode_version(v.value())?;
-        let mut d = Decoder::new(k.value());
-        let object = d.object()?;
-        let id = d.uuid()?;
-        d.finish()?;
-        if id != version.prepared.version_id || version.binding_revision != binding.revision {
-            return Err(StoreError::CorruptRecord);
-        }
-        let entry = decode_log(required(logs.get(version.decision_log_id.index)?)?.value())?;
-        let c = entry_command(&entry, native)?;
-        if entry.id != version.decision_log_id
-            || c.object != object
-            || c.prepared != version.prepared
-            || events.get(c.operation_id.as_slice())?.is_none()
-        {
-            return Err(StoreError::CorruptRecord);
-        }
-        let head = required(heads.get(object_bytes(&object)?.as_slice())?)?;
-        let mut d = Decoder::new(head.value());
-        let head_id = d.uuid()?;
-        d.finish()?;
-        let current = decode_version(required(versions.get(version_key(&object, head_id)?.as_slice())?)?.value())?;
-        if current.decision_log_id.index < version.decision_log_id.index {
-            return Err(StoreError::CorruptRecord);
-        }
-    }
-    for row in heads.iter()? {
-        let (k, v) = row?;
-        let mut d = Decoder::new(k.value());
-        let object = d.object()?;
-        d.finish()?;
-        let mut d = Decoder::new(v.value());
-        let id = d.uuid()?;
-        d.finish()?;
-        decode_version(required(versions.get(version_key(&object, id)?.as_slice())?)?.value())?;
-    }
-    Ok(())
-}

crates/capture-authority/src/application_tests.rs

@@ -1,531 +0,0 @@
-use super::*;
-use crate::application::{APPLY_RESULTS, EVENTS, OPERATIONS, VERSIONS};
-use crate::tests::CrashBackend;
-use redb::ReadableTableMetadata;
-use std::{
-    io::{BufRead, BufReader, Write},
-    process::{Command, Stdio},
-    sync::mpsc,
-    time::Duration,
-};
-fn identity() -> NodeIdentity {
-    NodeIdentity {
-        cluster_id: [7; 16],
-        node_id: 0,
-    }
-}
-fn binding() -> CaptureBinding {
-    CaptureBinding {
-        revision: 9,
-        binding_id: [8; 16],
-        target_id: [9; 16],
-    }
-}
-fn command() -> DecideCreated {
-    DecideCreated {
-        operation_id: [1; 16],
-        object: ObjectIdentity {
-            bucket_incarnation: [2; 16],
-            key: vec![0, 255, 3],
-        },
-        expected_head: None,
-        prepared: PreparedIdentity {
-            version_id: [3; 16],
-            preparation_id: [4; 16],
-            content_digest: [5; 32],
-            content_length: 123,
-        },
-        binding_revision: 9,
-    }
-}
-fn id(index: u64) -> LogId {
-    LogId {
-        term: 8,
-        leader_node: 0,
-        index,
-    }
-}
-fn append(store: &mut Store, index: u64, c: &DecideCreated) {
-    store
-        .append(&[LogEntry {
-            id: id(index),
-            payload: c.encode().expect("encode command"),
-        }])
-        .expect("append command");
-}
-fn apply(store: &mut Store, index: u64, c: &DecideCreated) -> CreatedResult {
-    append(store, index, c);
-    store.save_committed(id(index)).expect("commit log");
-    store.apply_next_created(id(index)).expect("apply command")
-}
-fn success(c: &DecideCreated, index: u64) -> CreatedResult {
-    CreatedResult::Created {
-        version_id: c.prepared.version_id,
-        event_id: c.operation_id,
-        decision_log_id: id(index),
-    }
-}
-fn complete(store: &Store) {
-    let c = command();
-    assert_eq!(store.capture_binding().expect("binding"), Some(binding()));
-    assert_eq!(
-        store.created_head(&c.object).expect("head"),
-        Some(c.prepared.version_id),
-        "U11 acknowledged head lost"
-    );
-    assert_eq!(
-        store.created_version(&c.object, c.prepared.version_id).expect("version"),
-        Some(CreatedVersion {
-            prepared: c.prepared.clone(),
-            decision_log_id: id(0),
-            binding_revision: 9
-        })
-    );
-    assert_eq!(
-        store.created_event(c.operation_id).expect("event"),
-        Some(CreatedEvent {
-            object: c.object.clone(),
-            prepared: c.prepared.clone(),
-            decision_log_id: id(0),
-            binding: binding()
-        }),
-        "U11 complete event missing"
-    );
-    assert_eq!(
-        store.created_operation(c.operation_id).expect("operation"),
-        Some(CreatedOperation {
-            canonical_command: c.encode().expect("encode"),
-            result: success(&c, 0)
-        })
-    );
-    assert_eq!(
-        store.created_apply_result(0).expect("result"),
-        Some(CreatedApplyResult {
-            log_id: id(0),
-            result: success(&c, 0)
-        })
-    );
-    assert_eq!(store.last_applied().expect("last applied"), Some(id(0)));
-}
-fn fixture() -> (tempfile::TempDir, Store) {
-    let dir = tempfile::tempdir().expect("tempdir");
-    let mut store = Store::initialize(dir.path().join("db"), identity()).expect("initialize");
-    store.pin_capture_binding(binding()).expect("pin");
-    (dir, store)
-}
-fn reopen(path: &std::path::Path) -> Store {
-    let result = Store::open(path, identity());
-    assert!(result.is_ok(), "U11 complete reopen: {:?}", result.as_ref().err());
-    result.expect("asserted successful reopen")
-}
-#[test]
-fn created_codec_is_canonical_and_strict() {
-    let c = command();
-    let b = c.encode().expect("encode");
-    let mut golden = b"CRTD\x01".to_vec();
-    golden.extend([1; 16]);
-    golden.extend([2; 16]);
-    golden.extend(3u32.to_be_bytes());
-    golden.extend([0, 255, 3]);
-    golden.push(0);
-    golden.extend([3; 16]);
-    golden.extend([4; 16]);
-    golden.extend([5; 32]);
-    golden.extend(123u64.to_be_bytes());
-    golden.extend(9u64.to_be_bytes());
-    assert_eq!(b, golden);
-    assert_eq!(DecideCreated::decode(&b).expect("decode"), c);
-    let mut variants = Vec::new();
-    let mut v = c.clone();
-    v.operation_id = [6; 16];
-    variants.push(v);
-    let mut v = c.clone();
-    v.object.bucket_incarnation = [6; 16];
-    variants.push(v);
-    let mut v = c.clone();
-    v.object.key.push(4);
-    variants.push(v);
-    let mut v = c.clone();
-    v.expected_head = Some([6; 16]);
-    variants.push(v);
-    let mut v = c.clone();
-    v.prepared.version_id = [6; 16];
-    variants.push(v);
-    let mut v = c.clone();
-    v.prepared.preparation_id = [6; 16];
-    variants.push(v);
-    let mut v = c.clone();
-    v.prepared.content_digest = [6; 32];
-    variants.push(v);
-    let mut v = c.clone();
-    v.prepared.content_length += 1;
-    variants.push(v);
-    let mut v = c.clone();
-    v.binding_revision += 1;
-    variants.push(v);
-    for v in variants {
-        assert_ne!(v.encode().expect("variant"), b)
-    }
-    for n in 0..b.len() {
-        assert!(DecideCreated::decode(&b[..n]).is_err())
-    }
-    let mut bad = b.clone();
-    bad[4] = 2;
-    assert!(DecideCreated::decode(&bad).is_err());
-    let mut bad = b.clone();
-    bad[44] = 2;
-    assert!(DecideCreated::decode(&bad).is_err());
-    let mut bad = b.clone();
-    bad.push(0);
-    assert!(DecideCreated::decode(&bad).is_err());
-    let mut bad = b;
-    bad[37..41].copy_from_slice(&4097u32.to_be_bytes());
-    assert!(DecideCreated::decode(&bad).is_err());
-    let mut bad = c.clone();
-    bad.operation_id = [0; 16];
-    assert!(bad.encode().is_err());
-    bad = c;
-    bad.object.key = vec![0; MAX_OBJECT_KEY_LENGTH + 1];
-    assert!(bad.encode().is_err());
-}
-#[test]
-fn created_committed_order_and_identity_are_enforced() {
-    let (_dir, mut s) = fixture();
-    let c = command();
-    append(&mut s, 0, &c);
-    append(&mut s, 1, &c);
-    assert!(s.apply_next_created(id(0)).is_err());
-    assert_eq!(s.last_applied().expect("no apply"), None);
-    s.save_committed(id(1)).expect("committed");
-    assert!(matches!(s.apply_next_created(id(1)), Err(StoreError::InvalidApplySequence)));
-    let mut wrong = id(0);
-    wrong.term += 1;
-    assert!(s.apply_next_created(wrong).is_err());
-    wrong = id(0);
-    wrong.leader_node += 1;
-    assert!(s.apply_next_created(wrong).is_err());
-    assert_eq!(s.apply_next_created(id(0)).expect("first"), success(&c, 0));
-    complete(&s);
-    assert_eq!(s.apply_next_created(id(0)).expect("retry"), success(&c, 0));
-    complete(&s);
-    assert!(s.apply_next_created(wrong).is_err());
-    assert_eq!(s.apply_next_created(id(1)).expect("duplicate log"), success(&c, 0));
-    assert_eq!(s.last_applied().expect("last"), Some(id(1)));
-    assert_eq!(
-        s.created_apply_result(1).expect("result"),
-        Some(CreatedApplyResult {
-            log_id: id(1),
-            result: success(&c, 0)
-        })
-    );
-    let tx = s.database.begin_read().expect("read");
-    assert_eq!(tx.open_table(EVENTS).expect("events").len().expect("len"), 1);
-}
-#[test]
-fn created_head_version_event_and_dedup_reopen_together() {
-    let (dir, mut s) = fixture();
-    let c = command();
-    assert_eq!(apply(&mut s, 0, &c), success(&c, 0));
-    drop(s);
-    let mut s = reopen(&dir.path().join("db"));
-    complete(&s);
-    assert_eq!(apply(&mut s, 1, &c), success(&c, 0));
-    let mut changed = c.clone();
-    changed.prepared.content_digest = [6; 32];
-    assert_eq!(
-        apply(&mut s, 2, &changed),
-        CreatedResult::OperationConflict,
-        "U11 full canonical operation conflict"
-    );
-    assert_eq!(
-        s.created_operation(c.operation_id)
-            .expect("original")
-            .expect("operation")
-            .result,
-        success(&c, 0)
-    );
-    let mut stale = c.clone();
-    stale.operation_id = [6; 16];
-    stale.prepared.version_id = [6; 16];
-    assert_eq!(
-        apply(&mut s, 3, &stale),
-        CreatedResult::HeadMismatch {
-            actual_head: Some(c.prepared.version_id)
-        }
-    );
-    let mut reuse = c.clone();
-    reuse.operation_id = [7; 16];
-    reuse.expected_head = Some(c.prepared.version_id);
-    assert_eq!(apply(&mut s, 4, &reuse), CreatedResult::VersionConflict);
-    let mut replacement = stale.clone();
-    replacement.operation_id = [10; 16];
-    replacement.expected_head = Some(c.prepared.version_id);
-    assert_eq!(apply(&mut s, 5, &replacement), success(&replacement, 5));
-    assert_eq!(s.created_head(&c.object).expect("head"), Some(replacement.prepared.version_id));
-    assert_eq!(
-        s.created_version(&c.object, c.prepared.version_id)
-            .expect("old version")
-            .expect("version")
-            .decision_log_id,
-        id(0)
-    );
-    assert!(s.created_event(c.operation_id).expect("old event").is_some());
-    assert!(s.created_event(replacement.operation_id).expect("new event").is_some());
-    assert!(s.created_event(stale.operation_id).expect("rejection event").is_none());
-    assert_eq!(
-        apply(&mut s, 6, &stale),
-        CreatedResult::HeadMismatch {
-            actual_head: Some(c.prepared.version_id)
-        }
-    );
-    drop(s);
-    let s = reopen(&dir.path().join("db"));
-    assert_eq!(s.last_applied().expect("last"), Some(id(6)));
-    let tx = s.database.begin_read().expect("read");
-    assert_eq!(tx.open_table(EVENTS).expect("events").len().expect("len"), 2);
-}
-#[test]
-fn created_binding_is_pinned_and_not_caller_selected() {
-    let (dir, mut s) = fixture();
-    let mut bad = command();
-    bad.binding_revision = 10;
-    assert_eq!(apply(&mut s, 0, &bad), CreatedResult::BindingMismatch);
-    assert!(s.created_head(&bad.object).expect("head").is_none());
-    assert!(s.created_event(bad.operation_id).expect("event").is_none());
-    assert_eq!(
-        s.created_operation(bad.operation_id)
-            .expect("operation")
-            .expect("saved")
-            .result,
-        CreatedResult::BindingMismatch
-    );
-    s.pin_capture_binding(binding()).expect("idempotent pin");
-    let mut changed = binding();
-    changed.target_id = [10; 16];
-    assert!(matches!(s.pin_capture_binding(changed), Err(StoreError::BindingConflict)));
-    drop(s);
-    let s = reopen(&dir.path().join("db"));
-    assert_eq!(s.capture_binding().expect("binding"), Some(binding()));
-}
-#[test]
-fn created_schema_compatibility_and_corruption_are_checked() {
-    let dir = tempfile::tempdir().expect("dir");
-    let path = dir.path().join("db");
-    let s = Store::initialize(&path, identity()).expect("schema1");
-    assert_eq!(s.capture_binding().expect("unmigrated"), None);
-    drop(s);
-    let mut s = reopen(&path);
-    assert_eq!(s.last_applied().expect("no apply"), None);
-    append(&mut s, 0, &command());
-    s.save_committed(id(0)).expect("schema2");
-    drop(s);
-    let mut s = reopen(&path);
-    assert_eq!(s.capture_binding().expect("schema2 unchanged"), None);
-    s.pin_capture_binding(binding()).expect("explicit upgrade");
-    drop(s);
-    let mut s = reopen(&path);
-    assert_eq!(s.capture_binding().expect("schema3"), Some(binding()));
-    s.apply_next_created(id(0)).expect("apply");
-    drop(s);
-    let db = Database::open(&path).expect("raw db");
-    let tx = db.begin_write().expect("write corruption");
-    tx.open_table(EVENTS)
-        .expect("events")
-        .remove(command().operation_id.as_slice())
-        .expect("remove reference");
-    tx.commit().expect("commit corruption");
-    drop(db);
-    let result = Store::open(&path, identity());
-    assert!(
-        matches!(result, Err(StoreError::CorruptRecord)),
-        "U11 missing event rejected before expect"
-    );
-    let (dir, mut s) = fixture();
-    assert_eq!(s.read_committed().expect("empty committed"), None);
-    append(&mut s, 0, &command());
-    s.save_committed(id(0)).expect("committed schema3");
-    assert_eq!(s.capture_binding().expect("no downgrade"), Some(binding()));
-    drop(s);
-    let path = dir.path().join("db");
-    let db = Database::open(&path).expect("raw db");
-    let tx = db.begin_write().expect("write");
-    let mut marker = vec![1];
-    marker.extend(encode_id(id(0)));
-    tx.open_table(META)
-        .expect("meta")
-        .insert("last_applied", marker.as_slice())
-        .expect("corrupt applied");
-    tx.commit().expect("commit");
-    drop(db);
-    assert!(
-        matches!(Store::open(&path, identity()), Err(StoreError::CorruptRecord)),
-        "U11 last applied missing result rejected"
-    );
-    let (dir, s) = fixture();
-    drop(s);
-    let path = dir.path().join("db");
-    let db = Database::open(&path).expect("raw pinned db");
-    let tx = db.begin_write().expect("missing binding write");
-    tx.open_table(META)
-        .expect("meta")
-        .remove("capture_binding")
-        .expect("remove binding");
-    tx.commit().expect("binding corruption commit");
-    drop(db);
-    assert!(
-        matches!(Store::open(&path, identity()), Err(StoreError::CorruptRecord)),
-        "U11 missing pinned binding rejected"
-    );
-
-    let (dir, mut s) = fixture();
-    let c = command();
-    assert_eq!(apply(&mut s, 0, &c), success(&c, 0));
-    assert_eq!(apply(&mut s, 1, &c), success(&c, 0));
-    drop(s);
-    let path = dir.path().join("db");
-    let db = Database::open(&path).expect("raw duplicate db");
-    let tx = db.begin_write().expect("retarget decision write");
-    let mut key = created::object_bytes(&c.object).expect("object key");
-    key.extend(c.prepared.version_id);
-    let mut version = Vec::new();
-    created::put_prepared(&mut version, &c.prepared);
-    version.extend(encode_id(id(1)));
-    version.extend(binding().revision.to_be_bytes());
-    tx.open_table(VERSIONS)
-        .expect("versions")
-        .insert(key.as_slice(), version.as_slice())
-        .expect("retarget version");
-    let mut event = created::object_bytes(&c.object).expect("event object");
-    created::put_prepared(&mut event, &c.prepared);
-    event.extend(encode_id(id(1)));
-    event.extend(created::binding_bytes(&binding()).expect("binding bytes"));
-    tx.open_table(EVENTS)
-        .expect("events")
-        .insert(c.operation_id.as_slice(), event.as_slice())
-        .expect("retarget event");
-    let canonical = c.encode().expect("canonical");
-    let mut operation = u64::try_from(canonical.len()).expect("length").to_be_bytes().to_vec();
-    operation.extend(canonical);
-    operation.extend(created::result_bytes(&success(&c, 1)));
-    tx.open_table(OPERATIONS)
-        .expect("operations")
-        .insert(c.operation_id.as_slice(), operation.as_slice())
-        .expect("retarget original response");
-    for index in 0..=1 {
-        let mut result = encode_id(id(index));
-        result.extend(created::result_bytes(&success(&c, 1)));
-        tx.open_table(APPLY_RESULTS)
-            .expect("results")
-            .insert(index, result.as_slice())
-            .expect("retarget duplicate response");
-    }
-    tx.commit().expect("coherent retarget commit");
-    drop(db);
-    assert!(
-        matches!(Store::open(&path, identity()), Err(StoreError::CorruptRecord)),
-        "U11 original decision cannot retarget duplicate log"
-    );
-}
-#[test]
-fn created_process_child() {
-    if let Some(path) = std::env::var_os("U11_CHILD_DB") {
-        let mut s = Store::initialize(path, identity()).expect("child init");
-        s.pin_capture_binding(binding()).expect("child pin");
-        assert_eq!(apply(&mut s, 0, &command()), success(&command(), 0));
-        complete(&s);
-        println!("U11_ACK");
-        std::io::stdout().flush().expect("flush ACK");
-        loop {
-            std::thread::park()
-        }
-    }
-    let (_dir, mut s) = fixture();
-    assert_eq!(apply(&mut s, 0, &command()), success(&command(), 0));
-    complete(&s);
-}
-#[test]
-fn created_acknowledged_apply_survives_child_kill() {
-    let dir = tempfile::tempdir().expect("dir");
-    let path = dir.path().join("db");
-    let mut child = Command::new(std::env::current_exe().expect("test executable"))
-        .args(["--exact", "application_tests::created_process_child", "--nocapture"])
-        .env("U11_CHILD_DB", &path)
-        .stdout(Stdio::piped())
-        .stderr(Stdio::inherit())
-        .spawn()
-        .expect("spawn");
-    let stdout = child.stdout.take().expect("stdout");
-    let (tx, rx) = mpsc::channel();
-    let reader = std::thread::spawn(move || {
-        for line in BufReader::new(stdout).lines() {
-            let line = line.expect("child line");
-            if line.ends_with("U11_ACK") {
-                let _ = tx.send(());
-                break;
-            }
-        }
-    });
-    let acknowledged = rx.recv_timeout(Duration::from_secs(20));
-    child.kill().expect("kill child");
-    child.wait().expect("wait child");
-    reader.join().expect("reader cleanup");
-    assert!(acknowledged.is_ok(), "U11 bounded child ACK missing");
-    complete(&reopen(&path));
-}
-#[test]
-fn created_power_cut_before_and_after_apply_flush() {
-    let (dir, mut s) = fixture();
-    append(&mut s, 0, &command());
-    s.save_committed(id(0)).expect("committed");
-    drop(s);
-    let path = dir.path().join("db");
-    let backend = CrashBackend::new(&path);
-    let mut s = Store::from_database(backend.database(), identity()).expect("backend");
-    assert_eq!(s.apply_next_created(id(0)).expect("apply ACK"), success(&command(), 0));
-    backend.cut();
-    drop(s);
-    complete(&reopen(&path));
-    for sync in 1..=2 {
-        for after in [false, true] {
-            let (dir, mut s) = fixture();
-            append(&mut s, 0, &command());
-            s.save_committed(id(0)).expect("committed");
-            drop(s);
-            let path = dir.path().join("db");
-            let backend = CrashBackend::new(&path);
-            let mut s = Store::from_database(backend.database(), identity()).expect("backend");
-            let (entered, resume) = backend.pause_sync(sync, after);
-            let writer = std::thread::spawn(move || {
-                let result = s.apply_next_created(id(0));
-                (s, result)
-            });
-            entered.wait();
-            backend.cut();
-            resume.wait();
-            let (s, result) = writer.join().expect("writer");
-            drop(s);
-            let reopened = Store::open(&path, identity());
-            assert!(
-                reopened.is_ok(),
-                "U11 apply cut must reopen whole old/new state sync={sync} after={after}: {:?}",
-                reopened.as_ref().err()
-            );
-            let s = reopened.expect("asserted reopen");
-            if s.last_applied().expect("last").is_some() {
-                complete(&s)
-            } else {
-                assert!(result.is_err());
-                assert_eq!(s.created_head(&command().object).expect("old head"), None);
-                assert_eq!(
-                    s.created_version(&command().object, command().prepared.version_id)
-                        .expect("old version"),
-                    None
-                );
-                assert_eq!(s.created_event(command().operation_id).expect("old event"), None);
-                assert_eq!(s.created_operation(command().operation_id).expect("old op"), None);
-                assert_eq!(s.created_apply_result(0).expect("old result"), None)
-            }
-            eprintln!("U11 cut boundary sync={sync} after={after}");
-        }
-    }
-}

crates/capture-authority/src/committed.rs

@@ -1,63 +0,0 @@
-use crate::{LOGS, LogId, META, Store, StoreError, decode_id, decode_log, encode_id, number};
-use redb::{ReadableDatabase, ReadableTable};
-
-pub(crate) fn validate_committed(
-    meta: &impl ReadableTable<&'static str, &'static [u8]>,
-    logs: &impl ReadableTable<u64, &'static [u8]>,
-) -> Result<Option<LogId>, StoreError> {
-    let schema = number(meta.get("schema")?.ok_or(StoreError::CorruptRecord)?.value())?;
-    let marker = meta.get("committed")?;
-    match (schema, marker) {
-        (1 | 3 | 4, None) => {
-            if matches!(schema, 3 | 4) && meta.get("last_applied")?.is_none_or(|v| v.value() != [0]) {
-                return Err(StoreError::CorruptRecord);
-            }
-            Ok(None)
-        }
-        (2 | 3 | 4, Some(marker)) => {
-            let id = decode_id(marker.value())?;
-            let record = logs.get(id.index)?.ok_or(StoreError::CorruptRecord)?;
-            if decode_log(record.value())?.id != id {
-                return Err(StoreError::CorruptRecord);
-            }
-            Ok(Some(id))
-        }
-        (1 | 2, _) => Err(StoreError::CorruptRecord),
-        _ => Err(StoreError::UnsupportedSchema),
-    }
-}
-
-impl Store {
-    /// Read the exact committed boundary, validating it against the stored log.
-    pub fn read_committed(&self) -> Result<Option<LogId>, StoreError> {
-        let tx = self.database.begin_read()?;
-        validate_committed(&tx.open_table(META)?, &tx.open_table(LOGS)?)
-    }
-
-    /// Persist a monotonic committed boundary supplied by the authority owner.
-    pub fn save_committed(&mut self, id: LogId) -> Result<(), StoreError> {
-        let tx = self.write_transaction()?;
-        {
-            let mut meta = tx.open_table(META)?;
-            let logs = tx.open_table(LOGS)?;
-            let previous = validate_committed(&meta, &logs)?;
-            let record = logs.get(id.index)?.ok_or(StoreError::InvalidCommittedLog)?;
-            if decode_log(record.value())?.id != id {
-                return Err(StoreError::InvalidCommittedLog);
-            }
-            if let Some(previous) = previous {
-                if id.index < previous.index {
-                    return Err(StoreError::CommittedRegression);
-                }
-                if id == previous {
-                    return Ok(());
-                }
-            }
-            meta.insert("committed", encode_id(id).as_slice())?;
-            if previous.is_none() && !matches!(number(meta.get("schema")?.ok_or(StoreError::CorruptRecord)?.value())?, 3 | 4) {
-                meta.insert("schema", 2u64.to_be_bytes().as_slice())?;
-            }
-        }
-        self.commit(tx)
-    }
-}

crates/capture-authority/src/created.rs

@@ -1,242 +0,0 @@
-use crate::{LogId, StoreError, decode_id, encode_id};
-
-pub const MAX_OBJECT_KEY_LENGTH: usize = 4096;
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct ObjectIdentity {
-    pub bucket_incarnation: [u8; 16],
-    pub key: Vec<u8>,
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct PreparedIdentity {
-    pub version_id: [u8; 16],
-    pub preparation_id: [u8; 16],
-    pub content_digest: [u8; 32],
-    pub content_length: u64,
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct DecideCreated {
-    pub operation_id: [u8; 16],
-    pub object: ObjectIdentity,
-    pub expected_head: Option<[u8; 16]>,
-    pub prepared: PreparedIdentity,
-    pub binding_revision: u64,
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct CaptureBinding {
-    pub revision: u64,
-    pub binding_id: [u8; 16],
-    pub target_id: [u8; 16],
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub enum CreatedResult {
-    Created {
-        version_id: [u8; 16],
-        event_id: [u8; 16],
-        decision_log_id: LogId,
-    },
-    HeadMismatch {
-        actual_head: Option<[u8; 16]>,
-    },
-    OperationConflict,
-    BindingMismatch,
-    VersionConflict,
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct CreatedVersion {
-    pub prepared: PreparedIdentity,
-    pub decision_log_id: LogId,
-    pub binding_revision: u64,
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct CreatedEvent {
-    pub object: ObjectIdentity,
-    pub prepared: PreparedIdentity,
-    pub decision_log_id: LogId,
-    pub binding: CaptureBinding,
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct CreatedOperation {
-    pub canonical_command: Vec<u8>,
-    pub result: CreatedResult,
-}
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub struct CreatedApplyResult {
-    pub log_id: LogId,
-    pub result: CreatedResult,
-}
-
-pub(crate) struct Decoder<'a> {
-    bytes: &'a [u8],
-}
-impl<'a> Decoder<'a> {
-    pub(crate) fn new(bytes: &'a [u8]) -> Self {
-        Self { bytes }
-    }
-    pub(crate) fn take<const N: usize>(&mut self) -> Result<[u8; N], StoreError> {
-        let a = self
-            .bytes
-            .get(..N)
-            .ok_or(StoreError::CorruptRecord)?
-            .try_into()
-            .map_err(|_| StoreError::CorruptRecord)?;
-        self.bytes = &self.bytes[N..];
-        Ok(a)
-    }
-    pub(crate) fn u64(&mut self) -> Result<u64, StoreError> {
-        Ok(u64::from_be_bytes(self.take()?))
-    }
-    pub(crate) fn uuid(&mut self) -> Result<[u8; 16], StoreError> {
-        let id = self.take()?;
-        if id == [0; 16] {
-            return Err(StoreError::CorruptRecord);
-        }
-        Ok(id)
-    }
-    pub(crate) fn option(&mut self) -> Result<Option<[u8; 16]>, StoreError> {
-        match self.take::<1>()?[0] {
-            0 => Ok(None),
-            1 => Ok(Some(self.uuid()?)),
-            _ => Err(StoreError::CorruptRecord),
-        }
-    }
-    pub(crate) fn object(&mut self) -> Result<ObjectIdentity, StoreError> {
-        let bucket_incarnation = self.uuid()?;
-        let len = usize::try_from(u32::from_be_bytes(self.take()?)).map_err(|_| StoreError::CorruptRecord)?;
-        if len > MAX_OBJECT_KEY_LENGTH {
-            return Err(StoreError::CorruptRecord);
-        }
-        let key = self.bytes.get(..len).ok_or(StoreError::CorruptRecord)?.to_vec();
-        self.bytes = &self.bytes[len..];
-        Ok(ObjectIdentity { bucket_incarnation, key })
-    }
-    pub(crate) fn prepared(&mut self) -> Result<PreparedIdentity, StoreError> {
-        Ok(PreparedIdentity {
-            version_id: self.uuid()?,
-            preparation_id: self.uuid()?,
-            content_digest: self.take()?,
-            content_length: self.u64()?,
-        })
-    }
-    pub(crate) fn id(&mut self) -> Result<LogId, StoreError> {
-        decode_id(&self.take::<24>()?)
-    }
-    pub(crate) fn binding(&mut self) -> Result<CaptureBinding, StoreError> {
-        Ok(CaptureBinding {
-            revision: self.u64()?,
-            binding_id: self.uuid()?,
-            target_id: self.uuid()?,
-        })
-    }
-    pub(crate) fn finish(self) -> Result<(), StoreError> {
-        if self.bytes.is_empty() {
-            Ok(())
-        } else {
-            Err(StoreError::CorruptRecord)
-        }
-    }
-    pub(crate) fn result(&mut self) -> Result<CreatedResult, StoreError> {
-        match self.take::<1>()?[0] {
-            0 => Ok(CreatedResult::Created {
-                version_id: self.uuid()?,
-                event_id: self.uuid()?,
-                decision_log_id: self.id()?,
-            }),
-            1 => Ok(CreatedResult::HeadMismatch {
-                actual_head: self.option()?,
-            }),
-            2 => Ok(CreatedResult::OperationConflict),
-            3 => Ok(CreatedResult::BindingMismatch),
-            4 => Ok(CreatedResult::VersionConflict),
-            _ => Err(StoreError::CorruptRecord),
-        }
-    }
-}
-pub(crate) fn put_option(b: &mut Vec<u8>, id: Option<[u8; 16]>) {
-    b.push(u8::from(id.is_some()));
-    if let Some(id) = id {
-        b.extend(id)
-    }
-}
-pub(crate) fn object_bytes(o: &ObjectIdentity) -> Result<Vec<u8>, StoreError> {
-    if o.bucket_incarnation == [0; 16] || o.key.len() > MAX_OBJECT_KEY_LENGTH {
-        return Err(StoreError::CorruptRecord);
-    }
-    let capacity = 20usize.checked_add(o.key.len()).ok_or(StoreError::CorruptRecord)?;
-    let mut b = Vec::with_capacity(capacity);
-    b.extend(o.bucket_incarnation);
-    b.extend(
-        u32::try_from(o.key.len())
-            .map_err(|_| StoreError::CorruptRecord)?
-            .to_be_bytes(),
-    );
-    b.extend(&o.key);
-    Ok(b)
-}
-pub(crate) fn put_prepared(b: &mut Vec<u8>, p: &PreparedIdentity) {
-    b.extend(p.version_id);
-    b.extend(p.preparation_id);
-    b.extend(p.content_digest);
-    b.extend(p.content_length.to_be_bytes())
-}
-pub(crate) fn binding_bytes(v: &CaptureBinding) -> Result<Vec<u8>, StoreError> {
-    let mut b = v.revision.to_be_bytes().to_vec();
-    b.extend(v.binding_id);
-    b.extend(v.target_id);
-    let mut d = Decoder::new(&b);
-    d.binding()?;
-    d.finish()?;
-    Ok(b)
-}
-pub(crate) fn result_bytes(r: &CreatedResult) -> Vec<u8> {
-    let mut b = Vec::new();
-    match r {
-        CreatedResult::Created {
-            version_id,
-            event_id,
-            decision_log_id,
-        } => {
-            b.push(0);
-            b.extend(version_id);
-            b.extend(event_id);
-            b.extend(encode_id(*decision_log_id))
-        }
-        CreatedResult::HeadMismatch { actual_head } => {
-            b.push(1);
-            put_option(&mut b, *actual_head)
-        }
-        CreatedResult::OperationConflict => b.push(2),
-        CreatedResult::BindingMismatch => b.push(3),
-        CreatedResult::VersionConflict => b.push(4),
-    }
-    b
-}
-impl DecideCreated {
-    pub fn encode(&self) -> Result<Vec<u8>, StoreError> {
-        let object = object_bytes(&self.object)?;
-        let capacity = object.len().checked_add(134).ok_or(StoreError::CorruptRecord)?;
-        let mut b = Vec::with_capacity(capacity);
-        b.extend(b"CRTD\x01");
-        b.extend(self.operation_id);
-        b.extend(object);
-        put_option(&mut b, self.expected_head);
-        put_prepared(&mut b, &self.prepared);
-        b.extend(self.binding_revision.to_be_bytes());
-        Self::decode(&b)?;
-        Ok(b)
-    }
-    pub fn decode(bytes: &[u8]) -> Result<Self, StoreError> {
-        let mut d = Decoder::new(bytes);
-        if d.take::<5>()? != *b"CRTD\x01" {
-            return Err(StoreError::CorruptRecord);
-        }
-        let c = Self {
-            operation_id: d.uuid()?,
-            object: d.object()?,
-            expected_head: d.option()?,
-            prepared: d.prepared()?,
-            binding_revision: d.u64()?,
-        };
-        d.finish()?;
-        Ok(c)
-    }
-}

crates/capture-authority/src/node.rs

@@ -1,371 +0,0 @@
-//! Validated capture peer metadata and its independent CNOD v1 codec.
-use serde::{Deserialize, Deserializer, Serialize, Serializer, ser::SerializeStruct};
-
-#[derive(Clone, Debug, Default, PartialEq, Eq)]
-pub struct CaptureNode {
-    rpc_uri: String,
-}
-
-#[derive(Debug, thiserror::Error)]
-pub enum CaptureNodeError {
-    #[error("invalid RPC URI")]
-    InvalidRpcUri,
-    #[error("invalid RPC URI")]
-    InvalidRpcUriParse(#[source] url::ParseError),
-    #[error("RPC URI too long")]
-    RpcUriTooLong,
-    #[error("invalid node magic")]
-    InvalidNodeMagic,
-    #[error("unsupported node version")]
-    UnsupportedNodeVersion,
-    #[error("invalid node length")]
-    InvalidNodeLength,
-    #[error("truncated node record")]
-    TruncatedNodeRecord,
-    #[error("invalid node UTF-8")]
-    InvalidNodeUtf8(#[source] std::str::Utf8Error),
-    #[error("trailing node bytes")]
-    TrailingNodeBytes,
-}
-impl CaptureNodeError {
-    pub fn code(&self) -> &'static str {
-        match self {
-            Self::InvalidRpcUri | Self::InvalidRpcUriParse(_) => "invalid_rpc_uri",
-            Self::RpcUriTooLong => "rpc_uri_too_long",
-            Self::InvalidNodeMagic => "invalid_node_magic",
-            Self::UnsupportedNodeVersion => "unsupported_node_version",
-            Self::InvalidNodeLength => "invalid_node_length",
-            Self::TruncatedNodeRecord => "truncated_node_record",
-            Self::InvalidNodeUtf8(_) => "invalid_node_utf8",
-            Self::TrailingNodeBytes => "trailing_node_bytes",
-        }
-    }
-}
-impl CaptureNode {
-    pub fn new(rpc_uri: String) -> Result<Self, CaptureNodeError> {
-        let node = Self { rpc_uri };
-        node.validate()?;
-        Ok(node)
-    }
-
-    pub fn rpc_uri(&self) -> &str {
-        &self.rpc_uri
-    }
-
-    pub fn validate(&self) -> Result<(), CaptureNodeError> {
-        let uri = &self.rpc_uri;
-        if uri.len() > 4096 {
-            return Err(CaptureNodeError::RpcUriTooLong);
-        }
-        if uri.is_empty() || uri.chars().any(|c| c.is_whitespace() || c.is_control() || c == '\\') {
-            return Err(CaptureNodeError::InvalidRpcUri);
-        }
-        let rest = uri
-            .strip_prefix("http://")
-            .or_else(|| uri.strip_prefix("https://"))
-            .ok_or(CaptureNodeError::InvalidRpcUri)?;
-        if uri.contains('?') || uri.contains('#') {
-            return Err(CaptureNodeError::InvalidRpcUri);
-        }
-        let (authority, path) = rest.split_once('/').map_or((rest, ""), |(a, p)| (a, p));
-        // An empty suffix after the first slash is the only allowed path.
-        if !path.is_empty() || authority.contains('@') {
-            return Err(CaptureNodeError::InvalidRpcUri);
-        }
-        let (host, port) = if authority.starts_with('[') {
-            let end = authority.find(']').ok_or(CaptureNodeError::InvalidRpcUri)?;
-            let port = authority
-                .get(end + 1..)
-                .and_then(|suffix| suffix.strip_prefix(':'))
-                .ok_or(CaptureNodeError::InvalidRpcUri)?;
-            (&authority[..=end], port)
-        } else {
-            authority.split_once(':').ok_or(CaptureNodeError::InvalidRpcUri)?
-        };
-        if host.is_empty() || port.is_empty() || !port.bytes().all(|b| b.is_ascii_digit()) {
-            return Err(CaptureNodeError::InvalidRpcUri);
-        }
-        let port = port.parse::<u16>().map_err(|_| CaptureNodeError::InvalidRpcUri)?;
-        if port == 0 {
-            return Err(CaptureNodeError::InvalidRpcUri);
-        }
-        let parsed_url = url::Url::parse(uri).map_err(CaptureNodeError::InvalidRpcUriParse)?;
-        if parsed_url.host().is_none() {
-            return Err(CaptureNodeError::InvalidRpcUri);
-        }
-        Ok(())
-    }
-
-    pub fn encode(&self) -> Result<Vec<u8>, CaptureNodeError> {
-        self.validate()?;
-        let length = u32::try_from(self.rpc_uri.len()).map_err(|_| CaptureNodeError::InvalidNodeLength)?;
-        let mut bytes = b"CNOD\x01".to_vec();
-        bytes.extend_from_slice(&length.to_be_bytes());
-        bytes.extend_from_slice(self.rpc_uri.as_bytes());
-        Ok(bytes)
-    }
-
-    pub fn decode(bytes: &[u8]) -> Result<Self, CaptureNodeError> {
-        if bytes.len() < 9 {
-            return Err(CaptureNodeError::TruncatedNodeRecord);
-        }
-        if &bytes[..4] != b"CNOD" {
-            return Err(CaptureNodeError::InvalidNodeMagic);
-        }
-        if bytes[4] != 1 {
-            return Err(CaptureNodeError::UnsupportedNodeVersion);
-        }
-        let length = u32::from_be_bytes(bytes[5..9].try_into().map_err(|_| CaptureNodeError::InvalidNodeLength)?);
-        if !(1..=4096).contains(&length) {
-            return Err(CaptureNodeError::InvalidNodeLength);
-        }
-        let length = usize::try_from(length).map_err(|_| CaptureNodeError::InvalidNodeLength)?;
-        let end = 9_usize.checked_add(length).ok_or(CaptureNodeError::InvalidNodeLength)?;
-        if bytes.len() < end {
-            return Err(CaptureNodeError::TruncatedNodeRecord);
-        }
-        if bytes.len() != end {
-            return Err(CaptureNodeError::TrailingNodeBytes);
-        }
-        let uri = std::str::from_utf8(&bytes[9..end]).map_err(CaptureNodeError::InvalidNodeUtf8)?;
-        Self::new(uri.to_owned())
-    }
-}
-impl Serialize for CaptureNode {
-    fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
-        self.validate().map_err(serde::ser::Error::custom)?;
-        let mut state = serializer.serialize_struct("CaptureNode", 1)?;
-        state.serialize_field("rpc_uri", &self.rpc_uri)?;
-        state.end()
-    }
-}
-impl<'de> Deserialize<'de> for CaptureNode {
-    fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
-        #[derive(Deserialize)]
-        #[serde(deny_unknown_fields)]
-        struct Fields {
-            rpc_uri: String,
-        }
-        let fields = Fields::deserialize(deserializer).map_err(|_| serde::de::Error::custom("invalid capture node fields"))?;
-        Self::new(fields.rpc_uri).map_err(serde::de::Error::custom)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use std::error::Error;
-
-    fn record(payload: &[u8]) -> Vec<u8> {
-        let mut bytes = b"CNOD\x01".to_vec();
-        bytes.extend_from_slice(&u32::try_from(payload.len()).expect("test payload length").to_be_bytes());
-        bytes.extend_from_slice(payload);
-        bytes
-    }
-    fn reject_uri(uri: &str) {
-        let result = CaptureNode::new(uri.to_owned());
-        assert!(result.is_err(), "URI should reject: {uri:?}");
-        assert_eq!(result.expect_err("rejected URI").code(), "invalid_rpc_uri");
-    }
-    fn reject_record(bytes: &[u8], code: &str) {
-        let result = CaptureNode::decode(bytes);
-        assert!(result.is_err(), "record should reject with {code}");
-        assert_eq!(result.expect_err("rejected record").code(), code);
-    }
-    #[test]
-    fn actual_openraft_node_bound() {
-        fn require_node<T: openraft::Node>() {}
-        require_node::<CaptureNode>();
-        assert_eq!(CaptureNode::default().rpc_uri(), "");
-    }
-    #[test]
-    fn default_and_empty_rejected_at_every_boundary() {
-        let node = CaptureNode::default();
-        assert_eq!(node.rpc_uri(), "");
-        reject_uri("");
-        assert_eq!(node.validate().expect_err("empty validation").code(), "invalid_rpc_uri");
-        assert!(serde_json::to_string(&node).is_err());
-        assert!(serde_json::from_str::<CaptureNode>(r#"{"rpc_uri":""}"#).is_err());
-        assert_eq!(node.encode().expect_err("empty encoding").code(), "invalid_rpc_uri");
-        reject_record(&record(b""), "invalid_node_length");
-    }
-    #[test]
-    fn accepted_uris_preserve_exact_bytes() {
-        for uri in [
-            "http://node:80",
-            "https://node:443",
-            "http://node:1",
-            "https://node:65535/",
-            "http://127.0.0.1:9000",
-            "https://[::1]:443/",
-            "http://[2001:db8::1]:1",
-            "http://NoDe:00080/",
-        ] {
-            let result = CaptureNode::new(uri.to_owned());
-            assert!(result.is_ok(), "valid URI construction: {uri}");
-            let node = result.expect("valid URI");
-            assert_eq!(node.rpc_uri(), uri, "preserve explicit default port and raw URI");
-            assert_eq!(node.encode().expect("encode URI"), record(uri.as_bytes()));
-            assert_eq!(CaptureNode::decode(&record(uri.as_bytes())).expect("decode URI"), node);
-        }
-    }
-    #[test]
-    fn golden_cnod_bytes() {
-        let node = CaptureNode {
-            rpc_uri: "http://node:80".to_owned(),
-        };
-        let golden = b"CNOD\x01\x00\x00\x00\x0ehttp://node:80";
-        assert_eq!(node.encode().ok().as_deref(), Some(golden.as_slice()), "golden CNOD bytes");
-    }
-    #[test]
-    fn valid_cnod_decode() {
-        let golden = b"CNOD\x01\x00\x00\x00\x0ehttp://node:80";
-        let decoded = CaptureNode::decode(golden);
-        assert!(decoded.is_ok(), "golden decode succeeds");
-        assert_eq!(decoded.expect("golden decoded node").rpc_uri(), "http://node:80");
-    }
-    #[test]
-    fn serde_shape_roundtrip_and_strict_fields() {
-        let node = CaptureNode::new("https://node:443/".to_owned()).expect("serde node");
-        let json = r#"{"rpc_uri":"https://node:443/"}"#;
-        assert_eq!(serde_json::to_string(&node).expect("serialize node"), json);
-        assert_eq!(serde_json::from_str::<CaptureNode>(json).expect("deserialize node"), node);
-        for json in [
-            r#"{}"#,
-            r#"{"rpc_uri":1}"#,
-            r#"{"rpc_uri":null}"#,
-            r#"{"rpc_uri":"http://node:1","extra":0}"#,
-            r#"{"rpc_uri":"http://node:1","rpc_uri":"http://node:2"}"#,
-        ] {
-            assert!(serde_json::from_str::<CaptureNode>(json).is_err(), "strict fields: {json}");
-        }
-    }
-    #[test]
-    fn credentials_and_raw_uri_shapes_reject() {
-        for uri in [
-            "http://user@node:1",
-            "http://user:password@node:1",
-            "http://@node:1",
-            "HTTP://node:1",
-            "Https://node:1",
-            "http://node",
-            "http://node:",
-            "http://node:0",
-            "http://node:-1",
-            "http://node:+1",
-            "http://node:65536",
-            "http://node:999999999999999999999",
-            "http://[::1:1",
-            "http://[::1]extra:1",
-            "http://[invalid]:1",
-            "http://::1:1",
-            "http://:1",
-            "/disk/path",
-            "file:///disk/path",
-            "http://node:1/./",
-            "http://node:1/../",
-            "http://node:1/%2e/",
-            "http://node:1/%2E%2e/",
-            "http://node:1/path",
-            "http://node:1\\",
-            " http://node:1",
-            "http://node:1\n",
-            "http://no\tde:1",
-            "http://node:1\u{00a0}",
-            "http://node:1\u{0085}",
-            "http://node:1\0",
-        ] {
-            reject_uri(uri);
-        }
-    }
-    #[test]
-    fn query_and_fragment_markers_reject() {
-        for uri in [
-            "http://node:1?",
-            "http://node:1?x=y",
-            "http://node:1/?",
-            "http://node:1#",
-            "http://node:1#fragment",
-            "http://node:1/#",
-        ] {
-            reject_uri(uri);
-        }
-    }
-    #[test]
-    fn utf8_byte_length_boundaries() {
-        for length in [4095, 4096] {
-            let prefix = "http://node:";
-            let uri = format!("{prefix}{}1", "0".repeat(length - prefix.len() - 1));
-            assert_eq!(uri.len(), length);
-            assert!(url::Url::parse(&uri).is_ok(), "boundary fixture accepted by actual URL parser");
-            let node = CaptureNode::new(uri.clone()).expect("boundary node");
-            assert_eq!(node.rpc_uri(), uri);
-            assert_eq!(
-                CaptureNode::decode(&node.encode().expect("boundary encoding")).expect("boundary decoding"),
-                node
-            );
-        }
-        let uri = format!("http://node:{}1", "0".repeat(4097 - "http://node:".len() - 1));
-        assert_eq!(CaptureNode::new(uri).expect_err("oversize URI").code(), "rpc_uri_too_long");
-        let unicode = format!("http://{}:1", "é".repeat(2044));
-        assert!(unicode.chars().count() < 4096);
-        assert!(unicode.len() > 4096);
-        assert_eq!(CaptureNode::new(unicode).expect_err("UTF-8 byte limit").code(), "rpc_uri_too_long");
-    }
-    #[test]
-    fn cnod_headers_and_lengths_reject_exact_codes() {
-        let valid = record(b"http://node:80");
-        for end in 0..9 {
-            reject_record(&valid[..end], "truncated_node_record");
-        }
-        let mut bad = valid.clone();
-        bad[0] = b'X';
-        reject_record(&bad, "invalid_node_magic");
-        bad = valid.clone();
-        bad[4] = 2;
-        reject_record(&bad, "unsupported_node_version");
-        for length in [0_u32, 4097, u32::MAX] {
-            bad = b"CNOD\x01".to_vec();
-            bad.extend_from_slice(&length.to_be_bytes());
-            reject_record(&bad, "invalid_node_length");
-        }
-        for end in 9..valid.len() {
-            reject_record(&valid[..end], "truncated_node_record");
-        }
-        reject_record(&record(&[0xff]), "invalid_node_utf8");
-        reject_record(&record(&[0xc3, 0x28]), "invalid_node_utf8");
-        reject_record(&record(b"invalid URI"), "invalid_rpc_uri");
-    }
-    #[test]
-    fn trailing_bytes_reject() {
-        for tail in [&b"x"[..], &b"xyz"[..]] {
-            let mut bytes = record(b"http://node:80");
-            bytes.extend_from_slice(tail);
-            reject_record(&bytes, "trailing_node_bytes");
-        }
-    }
-    #[test]
-    fn errors_and_sources_redact_input() {
-        let sentinel = "http://SECRET_USER:SECRET_PASSWORD@node:1";
-        let error = CaptureNode::new(sentinel.to_owned()).expect_err("credentials reject");
-        let mut current: &dyn Error = &error;
-        loop {
-            let rendered = format!("{current} {current:?}");
-            assert!(!rendered.contains("SECRET"));
-            match current.source() {
-                Some(source) => current = source,
-                None => break,
-            }
-        }
-        let json = format!(r#"{{"rpc_uri":"{sentinel}"}}"#);
-        let error = serde_json::from_str::<CaptureNode>(&json).expect_err("serde credentials reject");
-        assert!(!format!("{error} {error:?}").contains("SECRET"));
-        let json = format!(r#"{{"{sentinel}":0}}"#);
-        let error = serde_json::from_str::<CaptureNode>(&json).expect_err("unknown fields reject");
-        assert!(!format!("{error} {error:?}").contains("SECRET"));
-        let error = CaptureNode::new("http://[bad]:1".to_owned()).expect_err("parser rejection");
-        assert!(error.source().is_some(), "retain URL parser source");
-        let error = CaptureNode::decode(&record(&[0xff])).expect_err("UTF-8 rejection");
-        assert!(error.source().is_some(), "retain UTF-8 source");
-    }
-}

crates/capture-authority/src/truncate.rs

@@ -1,43 +0,0 @@
-use crate::{LOGS, META, Store, StoreError, decode_id, decode_log, encode_id};
-use redb::ReadableTable;
-
-impl Store {
-    /// Atomically remove every log entry at or after `from`.
-    pub fn truncate_suffix(&mut self, from: u64) -> Result<(), StoreError> {
-        let tx = self.write_transaction()?;
-        {
-            let mut meta = tx.open_table(META)?;
-            let logs = tx.open_table(LOGS)?;
-            if crate::committed::validate_committed(&meta, &logs)?.is_some_and(|id| from <= id.index) {
-                return Err(StoreError::CommittedLogProtected);
-            }
-            drop(logs);
-            let tail = meta.get("tail")?.map(|v| decode_id(v.value())).transpose()?;
-            if tail.is_none_or(|id| from > id.index) {
-                return Ok(());
-            }
-            let mut logs = tx.open_table(LOGS)?;
-            let new_tail = if from == 0 {
-                None
-            } else {
-                let index = from - 1;
-                let record = logs.get(index)?.ok_or(StoreError::InvalidLogSequence)?;
-                let id = decode_log(record.value())?.id;
-                if id.index != index {
-                    return Err(StoreError::CorruptRecord);
-                }
-                Some(id)
-            };
-            logs.retain(|index, _| index < from)?;
-            match new_tail {
-                Some(id) => {
-                    meta.insert("tail", encode_id(id).as_slice())?;
-                }
-                None => {
-                    meta.remove("tail")?;
-                }
-            }
-        }
-        self.commit(tx)
-    }
-}

crates/common/Cargo.toml

@@ -34,6 +34,7 @@ hotpath-alloc = ["hotpath", "hotpath/hotpath-alloc"]
 hotpath-cpu = ["hotpath", "hotpath/hotpath-cpu"]
 
 [dependencies]
+arc-swap.workspace = true
 hotpath.workspace = true
 tokio = { workspace = true, features = ["fs", "rt-multi-thread"] }
 tonic = { workspace = true, features = ["gzip", "deflate"] }

crates/common/src/globals.rs

@@ -12,9 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use arc_swap::ArcSwap;
 use std::collections::HashMap;
-use std::sync::LazyLock;
 use std::sync::atomic::{AtomicU64, Ordering};
+use std::sync::{Arc, LazyLock};
 use tokio::sync::RwLock;
 use tonic::transport::Channel;
 
@@ -27,6 +28,42 @@ pub static GLOBAL_ROOT_CERT: LazyLock<RwLock<Option<Vec<u8>>>> = LazyLock::new(|
 pub static GLOBAL_MTLS_IDENTITY: LazyLock<RwLock<Option<MtlsIdentityPem>>> = LazyLock::new(|| RwLock::new(None));
 pub static GLOBAL_OUTBOUND_TLS_GENERATION: LazyLock<AtomicU64> = LazyLock::new(|| AtomicU64::new(0));
 
+#[derive(Clone, Default)]
+pub struct OutboundTlsSnapshot {
+    pub generation: u64,
+    pub root_ca_pem: Option<Vec<u8>>,
+    pub mtls_identity: Option<MtlsIdentityPem>,
+}
+
+static GLOBAL_OUTBOUND_TLS_STATE: LazyLock<ArcSwap<OutboundTlsSnapshot>> =
+    LazyLock::new(|| ArcSwap::from_pointee(OutboundTlsSnapshot::default()));
+
+pub fn get_global_outbound_tls_snapshot() -> Arc<OutboundTlsSnapshot> {
+    GLOBAL_OUTBOUND_TLS_STATE.load_full()
+}
+
+/// Publish identity, trust and generation together; the individual globals are legacy views.
+pub async fn publish_global_outbound_tls_snapshot(snapshot: OutboundTlsSnapshot) -> u64 {
+    GLOBAL_OUTBOUND_TLS_STATE.rcu(|current| {
+        if current.generation != 0
+            && current.root_ca_pem == snapshot.root_ca_pem
+            && current.mtls_identity == snapshot.mtls_identity
+        {
+            return Arc::clone(current);
+        }
+        Arc::new(OutboundTlsSnapshot {
+            generation: snapshot.generation.max(current.generation.saturating_add(1)),
+            root_ca_pem: snapshot.root_ca_pem.clone(),
+            mtls_identity: snapshot.mtls_identity.clone(),
+        })
+    });
+    let accepted = get_global_outbound_tls_snapshot();
+    *GLOBAL_ROOT_CERT.write().await = accepted.root_ca_pem.clone();
+    *GLOBAL_MTLS_IDENTITY.write().await = accepted.mtls_identity.clone();
+    GLOBAL_OUTBOUND_TLS_GENERATION.store(accepted.generation, Ordering::Relaxed);
+    accepted.generation
+}
+
 /// Log level to use when reporting cached gRPC connection eviction.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum ConnectionEvictionLogLevel {
@@ -85,17 +122,27 @@ pub async fn get_global_addr() -> String {
 /// # Arguments
 /// * `cert` - A vector of bytes representing the PEM-encoded root CA certificate.
 pub async fn set_global_root_cert(cert: Vec<u8>) {
+    GLOBAL_OUTBOUND_TLS_STATE.rcu(|current| {
+        let mut next = (**current).clone();
+        next.root_ca_pem = Some(cert.clone());
+        Arc::new(next)
+    });
     *GLOBAL_ROOT_CERT.write().await = Some(cert);
 }
 
 /// Clear the global root CA certificate for outbound gRPC clients.
 pub async fn clear_global_root_cert() {
+    GLOBAL_OUTBOUND_TLS_STATE.rcu(|current| {
+        let mut next = (**current).clone();
+        next.root_ca_pem = None;
+        Arc::new(next)
+    });
     *GLOBAL_ROOT_CERT.write().await = None;
 }
 
 /// Get the global root CA certificate for outbound gRPC clients.
 pub async fn get_global_root_cert() -> Option<Vec<u8>> {
-    GLOBAL_ROOT_CERT.read().await.clone()
+    get_global_outbound_tls_snapshot().root_ca_pem.clone()
 }
 
 /// Set the global mTLS identity (cert+key PEM) for outbound gRPC clients.
@@ -105,22 +152,32 @@ pub async fn get_global_root_cert() -> Option<Vec<u8>> {
 /// # Arguments
 /// * `identity` - An optional MtlsIdentityPem struct containing the cert and key PEM.
 pub async fn set_global_mtls_identity(identity: Option<MtlsIdentityPem>) {
+    GLOBAL_OUTBOUND_TLS_STATE.rcu(|current| {
+        let mut next = (**current).clone();
+        next.mtls_identity = identity.clone();
+        Arc::new(next)
+    });
     *GLOBAL_MTLS_IDENTITY.write().await = identity;
 }
 
 /// Get the global mTLS identity for outbound gRPC clients.
 pub async fn get_global_mtls_identity() -> Option<MtlsIdentityPem> {
-    GLOBAL_MTLS_IDENTITY.read().await.clone()
+    get_global_outbound_tls_snapshot().mtls_identity.clone()
 }
 
 /// Set the global outbound TLS generation.
 pub fn set_global_outbound_tls_generation(generation: u64) {
+    GLOBAL_OUTBOUND_TLS_STATE.rcu(|current| {
+        let mut next = (**current).clone();
+        next.generation = generation;
+        Arc::new(next)
+    });
     GLOBAL_OUTBOUND_TLS_GENERATION.store(generation, Ordering::Relaxed);
 }
 
 /// Get the global outbound TLS generation.
 pub fn get_global_outbound_tls_generation() -> u64 {
-    GLOBAL_OUTBOUND_TLS_GENERATION.load(Ordering::Relaxed)
+    get_global_outbound_tls_snapshot().generation
 }
 
 /// Evict a stale/dead connection from the global connection cache.
@@ -194,8 +251,77 @@ pub async fn clear_all_connections() {
 ///
 /// When present, gRPC clients will present this identity to servers requesting/requiring mTLS.
 /// When absent, clients proceed with standard server-authenticated TLS.
-#[derive(Clone, Debug)]
+#[derive(Clone, PartialEq, Eq)]
 pub struct MtlsIdentityPem {
     pub cert_pem: Vec<u8>,
     pub key_pem: Vec<u8>,
 }
+
+impl std::fmt::Debug for MtlsIdentityPem {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("MtlsIdentityPem")
+            .field("cert_bytes", &self.cert_pem.len())
+            .field("key_pem", &"[REDACTED]")
+            .finish()
+    }
+}
+
+#[cfg(test)]
+mod tls_snapshot_tests {
+    use super::*;
+
+    #[tokio::test]
+    async fn outbound_snapshot_publication_is_coherent_and_skips_unchanged_material() {
+        let start = get_global_outbound_tls_generation().saturating_add(1);
+        let snapshot = OutboundTlsSnapshot {
+            generation: start,
+            root_ca_pem: Some(vec![1]),
+            mtls_identity: Some(MtlsIdentityPem {
+                cert_pem: vec![1],
+                key_pem: vec![1],
+            }),
+        };
+        let first = publish_global_outbound_tls_snapshot(snapshot.clone()).await;
+        assert_eq!(
+            publish_global_outbound_tls_snapshot(OutboundTlsSnapshot {
+                generation: first.saturating_add(1),
+                ..snapshot
+            })
+            .await,
+            first
+        );
+        let writer = tokio::spawn(async move {
+            for tag in 2_u8..=255 {
+                publish_global_outbound_tls_snapshot(OutboundTlsSnapshot {
+                    generation: start.saturating_add(u64::from(tag)),
+                    root_ca_pem: Some(vec![tag]),
+                    mtls_identity: Some(MtlsIdentityPem {
+                        cert_pem: vec![tag],
+                        key_pem: vec![tag],
+                    }),
+                })
+                .await;
+                tokio::task::yield_now().await;
+            }
+        });
+        while !writer.is_finished() {
+            let state = get_global_outbound_tls_snapshot();
+            let identity = state.mtls_identity.as_ref().expect("identity in complete snapshot");
+            assert_eq!(state.root_ca_pem.as_ref().expect("roots in complete snapshot"), &identity.cert_pem);
+            assert_eq!(identity.cert_pem, identity.key_pem);
+            tokio::task::yield_now().await;
+        }
+        writer.await.expect("writer completes");
+    }
+
+    #[test]
+    fn mtls_identity_debug_redacts_private_key() {
+        let identity = MtlsIdentityPem {
+            cert_pem: b"public certificate".to_vec(),
+            key_pem: b"PRIVATE-KEY-MARKER".to_vec(),
+        };
+        let debug = format!("{identity:?}");
+        assert!(!debug.contains("PRIVATE-KEY-MARKER"));
+        assert!(debug.contains("[REDACTED]"));
+    }
+}

crates/e2e_test/src/common.rs

@@ -1542,6 +1542,15 @@ impl RustFSTestClusterEnvironment {
         self.start_node_from_binary(node_idx, &binary_path).await
     }
 
+    /// Start a process and wait only for TCP, allowing tests to bring up a
+    /// quorum one node at a time before the S3 service can become ready.
+    pub async fn start_node_process(&mut self, node_idx: usize) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+        let binary_path = rustfs_binary_path();
+        let volumes_arg = self.build_volumes_arg();
+        self.spawn_node(node_idx, &binary_path, &volumes_arg)?;
+        self.wait_for_node_ready(&self.nodes[node_idx].address, node_idx).await
+    }
+
     /// Start one stopped cluster node with a specific RustFS binary while
     /// preserving the cluster's volume layout and that node's data directory.
     pub async fn start_node_from_binary(

crates/e2e_test/src/dual_stack_differential/compare.rs

@@ -0,0 +1,512 @@
+// 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.
+
+//! What one stack answered, and how two answers are compared.
+//!
+//! An [`Observation`] keeps only what a client acts on: the HTTP status, the S3 error code, the
+//! allowlisted response headers and a few typed fields decoded from the response. The error
+//! message is kept for diagnostics and never compared: message wording is judged by the wire
+//! corpus, not here. The comparator is pure so it can be tested without a server.
+
+use serde::Serialize;
+use std::collections::{BTreeMap, BTreeSet};
+use std::path::{Path, PathBuf};
+
+/// Response headers compared exactly (after [`normalized_header_value`]).
+const HEADER_ALLOWLIST: [&str; 7] = [
+    "content-type",
+    "x-amz-version-id",
+    "etag",
+    "x-amz-delete-marker",
+    "content-range",
+    "accept-ranges",
+    "x-amz-request-charged",
+];
+
+/// Every response header with this prefix is compared as well.
+const HEADER_ALLOWLIST_PREFIX: &str = "x-amz-server-side-encryption";
+
+/// Placeholder for a field one side did not send.
+const ABSENT: &str = "<absent>";
+
+/// The lowercase header name if the comparator looks at this header.
+pub(crate) fn compared_header(name: &str) -> Option<String> {
+    let name = name.to_ascii_lowercase();
+    (HEADER_ALLOWLIST.contains(&name.as_str()) || name.starts_with(HEADER_ALLOWLIST_PREFIX)).then_some(name)
+}
+
+/// A version ID is minted per process, so its value never matches across two servers; only
+/// whether it is the literal `null` (an unversioned write) carries meaning.
+fn normalized_header_value(name: &str, value: &str) -> String {
+    if name == "x-amz-version-id" && value != "null" {
+        "<version-id>".to_owned()
+    } else {
+        value.to_owned()
+    }
+}
+
+/// One request's outcome as a client sees it.
+#[derive(Clone, Debug, Serialize)]
+pub(crate) struct Observation {
+    /// The S3 operation, named as in the `s3s::S3` trait (`GetObject`).
+    pub op: &'static str,
+    /// Which request of the script this was (`normal`, `negative`, or a setup label).
+    pub case: &'static str,
+    /// HTTP status; 0 when no response arrived.
+    pub status: u16,
+    /// The S3 error code, or the SDK's error kind when there was no service error.
+    pub error_code: Option<String>,
+    /// Allowlisted headers only, lowercase names, normalized values.
+    pub headers: BTreeMap<String, String>,
+    /// Typed values decoded from the response body, never free text.
+    pub fields: BTreeMap<String, String>,
+    /// Diagnostic only; never compared.
+    #[serde(skip)]
+    pub message: Option<String>,
+}
+
+impl Observation {
+    /// Builds an observation, keeping only the allowlisted headers.
+    pub(crate) fn new<'h>(
+        op: &'static str,
+        case: &'static str,
+        status: u16,
+        error_code: Option<String>,
+        headers: impl IntoIterator<Item = (&'h str, &'h str)>,
+    ) -> Self {
+        let headers = headers
+            .into_iter()
+            .filter_map(|(name, value)| compared_header(name).map(|name| (name, value)))
+            .map(|(name, value)| {
+                let value = normalized_header_value(&name, value);
+                (name, value)
+            })
+            .collect();
+        Self {
+            op,
+            case,
+            status,
+            error_code,
+            headers,
+            fields: BTreeMap::new(),
+            message: None,
+        }
+    }
+
+    pub(crate) fn with_field(mut self, name: &str, value: impl Into<String>) -> Self {
+        self.fields.insert(name.to_owned(), value.into());
+        self
+    }
+
+    pub(crate) fn is_success(&self) -> bool {
+        (200..300).contains(&self.status)
+    }
+}
+
+/// One field on which the two stacks answered differently.
+#[derive(Clone, Debug, PartialEq, Eq, Serialize)]
+pub(crate) struct Difference {
+    pub op: String,
+    pub case: String,
+    pub field: String,
+    pub a: String,
+    pub b: String,
+}
+
+/// Every difference between two transcripts of the same script, matched by `(op, case)`.
+pub(crate) fn compare(a: &[Observation], b: &[Observation]) -> Vec<Difference> {
+    let mut differences = Vec::new();
+    let (index_a, duplicates_a) = index(a);
+    let (index_b, duplicates_b) = index(b);
+    for (op, case) in duplicates_a.union(&duplicates_b) {
+        let count = |side: &[Observation]| {
+            side.iter()
+                .filter(|observation| (observation.op, observation.case) == (*op, *case))
+                .count()
+                .to_string()
+        };
+        differences.push(difference(op, case, "duplicate_case", count(a), count(b)));
+    }
+    let keys: BTreeSet<_> = index_a.keys().chain(index_b.keys()).copied().collect();
+    for key @ (op, case) in keys {
+        match (index_a.get(&key), index_b.get(&key)) {
+            (Some(a), Some(b)) => compare_one(a, b, &mut differences),
+            (a, b) => {
+                let presence = |side: Option<&&Observation>| if side.is_some() { "present" } else { ABSENT }.to_owned();
+                differences.push(difference(op, case, "observation", presence(a), presence(b)));
+            }
+        }
+    }
+    differences
+}
+
+type Key = (&'static str, &'static str);
+
+fn index(side: &[Observation]) -> (BTreeMap<Key, &Observation>, BTreeSet<Key>) {
+    let mut index = BTreeMap::new();
+    let mut duplicates = BTreeSet::new();
+    for observation in side {
+        let key = (observation.op, observation.case);
+        if index.insert(key, observation).is_some() {
+            duplicates.insert(key);
+        }
+    }
+    (index, duplicates)
+}
+
+fn difference(op: &str, case: &str, field: &str, a: String, b: String) -> Difference {
+    Difference {
+        op: op.to_owned(),
+        case: case.to_owned(),
+        field: field.to_owned(),
+        a,
+        b,
+    }
+}
+
+fn compare_one(a: &Observation, b: &Observation, differences: &mut Vec<Difference>) {
+    let mut field = |name: String, value_a: Option<&str>, value_b: Option<&str>| {
+        if value_a != value_b {
+            let show = |value: Option<&str>| value.unwrap_or(ABSENT).to_owned();
+            differences.push(difference(a.op, a.case, &name, show(value_a), show(value_b)));
+        }
+    };
+    field(
+        "status".to_owned(),
+        Some(a.status.to_string().as_str()),
+        Some(b.status.to_string().as_str()),
+    );
+    field("error_code".to_owned(), a.error_code.as_deref(), b.error_code.as_deref());
+    let headers: BTreeSet<_> = a.headers.keys().chain(b.headers.keys()).collect();
+    for name in headers {
+        field(
+            format!("header.{name}"),
+            a.headers.get(name).map(String::as_str),
+            b.headers.get(name).map(String::as_str),
+        );
+    }
+    let fields: BTreeSet<_> = a.fields.keys().chain(b.fields.keys()).collect();
+    for name in fields {
+        field(
+            format!("body.{name}"),
+            a.fields.get(name).map(String::as_str),
+            b.fields.get(name).map(String::as_str),
+        );
+    }
+}
+
+/// Operations observed on both sides.
+pub(crate) fn compared_ops(a: &[Observation], b: &[Observation]) -> BTreeSet<&'static str> {
+    let ops_b: BTreeSet<_> = b.iter().map(|observation| observation.op).collect();
+    a.iter()
+        .map(|observation| observation.op)
+        .filter(|op| ops_b.contains(op))
+        .collect()
+}
+
+/// `(op, case)` pairs observed on both sides.
+pub(crate) fn compared_cases(a: &[Observation], b: &[Observation]) -> usize {
+    let cases_b: BTreeSet<_> = b.iter().map(|observation| (observation.op, observation.case)).collect();
+    a.iter()
+        .map(|observation| (observation.op, observation.case))
+        .collect::<BTreeSet<_>>()
+        .intersection(&cases_b)
+        .count()
+}
+
+/// The JSON report written for every run.
+#[derive(Debug, Serialize)]
+pub(crate) struct Report {
+    pub schema: u32,
+    pub run: String,
+    pub stack_a: String,
+    pub stack_b: String,
+    pub region_a: Option<String>,
+    pub region_b: Option<String>,
+    pub compared_ops: usize,
+    pub compared_cases: usize,
+    pub differences: Vec<Difference>,
+}
+
+impl Report {
+    /// Writes the report as `<directory>/<run>.json` and returns its path.
+    pub(crate) fn write_to(&self, directory: &Path) -> std::io::Result<PathBuf> {
+        std::fs::create_dir_all(directory)?;
+        let path = directory.join(format!("{}.json", self.run));
+        let json = serde_json::to_vec_pretty(self).map_err(std::io::Error::other)?;
+        std::fs::write(&path, json)?;
+        Ok(path)
+    }
+}
+
+/// One line per difference, for a failing assertion.
+pub(crate) fn render(differences: &[Difference]) -> String {
+    differences
+        .iter()
+        .map(|d| format!("({}, {}, {}, a={:?}, b={:?})", d.op, d.case, d.field, d.a, d.b))
+        .collect::<Vec<_>>()
+        .join("\n")
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn ok(op: &'static str) -> Observation {
+        Observation::new(op, "normal", 200, None, [("content-type", "application/xml")])
+    }
+
+    fn fields(differences: &[Difference]) -> Vec<&str> {
+        differences.iter().map(|d| d.field.as_str()).collect()
+    }
+
+    #[test]
+    fn identical_transcripts_have_no_difference() {
+        let a = vec![
+            ok("HeadBucket"),
+            ok("GetBucketLocation").with_field("location_constraint", "us-east-1"),
+        ];
+        let b = a.clone();
+        assert_eq!(compare(&a, &b), Vec::new());
+        assert_eq!(compared_ops(&a, &b).len(), 2);
+    }
+
+    #[test]
+    fn a_status_difference_is_reported() {
+        let a = vec![ok("PutBucketAcl")];
+        let b = vec![Observation::new(
+            "PutBucketAcl",
+            "normal",
+            403,
+            None,
+            [("content-type", "application/xml")],
+        )];
+        assert_eq!(
+            compare(&a, &b),
+            vec![Difference {
+                op: "PutBucketAcl".into(),
+                case: "normal".into(),
+                field: "status".into(),
+                a: "200".into(),
+                b: "403".into(),
+            }]
+        );
+    }
+
+    #[test]
+    fn an_error_code_difference_is_reported() {
+        let a = vec![Observation::new("GetObject", "negative", 404, Some("NoSuchKey".into()), [])];
+        let b = vec![Observation::new(
+            "GetObject",
+            "negative",
+            404,
+            Some("NoSuchBucket".into()),
+            [],
+        )];
+        let differences = compare(&a, &b);
+        assert_eq!(fields(&differences), ["error_code"]);
+        assert_eq!((differences[0].a.as_str(), differences[0].b.as_str()), ("NoSuchKey", "NoSuchBucket"));
+    }
+
+    #[test]
+    fn an_error_code_on_one_side_only_is_reported() {
+        let a = vec![Observation::new("HeadBucket", "negative", 404, Some("NotFound".into()), [])];
+        let b = vec![Observation::new("HeadBucket", "negative", 404, None, [])];
+        let differences = compare(&a, &b);
+        assert_eq!(fields(&differences), ["error_code"]);
+        assert_eq!(differences[0].b, ABSENT);
+    }
+
+    #[test]
+    fn an_allowlisted_header_difference_is_reported() {
+        let a = vec![Observation::new("HeadObject", "normal", 200, None, [("ETag", "\"aa\"")])];
+        let b = vec![Observation::new("HeadObject", "normal", 200, None, [("etag", "\"bb\"")])];
+        assert_eq!(fields(&compare(&a, &b)), ["header.etag"]);
+    }
+
+    #[test]
+    fn a_header_sent_by_one_side_only_is_reported() {
+        let a = vec![Observation::new(
+            "DeleteObject",
+            "normal",
+            204,
+            None,
+            [("x-amz-delete-marker", "true")],
+        )];
+        let b = vec![Observation::new("DeleteObject", "normal", 204, None, [])];
+        let differences = compare(&a, &b);
+        assert_eq!(fields(&differences), ["header.x-amz-delete-marker"]);
+        assert_eq!((differences[0].a.as_str(), differences[0].b.as_str()), ("true", ABSENT));
+    }
+
+    #[test]
+    fn every_server_side_encryption_header_is_compared() {
+        let header = "x-amz-server-side-encryption-customer-key-md5";
+        let a = vec![Observation::new("PutObject", "sse-c", 200, None, [(header, "one")])];
+        let b = vec![Observation::new("PutObject", "sse-c", 200, None, [(header, "two")])];
+        assert_eq!(fields(&compare(&a, &b)), [format!("header.{header}")]);
+    }
+
+    #[test]
+    fn headers_outside_the_allowlist_are_not_compared() {
+        let a = vec![Observation::new(
+            "ListBuckets",
+            "normal",
+            200,
+            None,
+            [
+                ("date", "Mon"),
+                ("x-amz-request-id", "1"),
+                ("server", "a"),
+                ("content-length", "10"),
+            ],
+        )];
+        let b = vec![Observation::new(
+            "ListBuckets",
+            "normal",
+            200,
+            None,
+            [
+                ("date", "Tue"),
+                ("x-amz-request-id", "2"),
+                ("server", "b"),
+                ("content-length", "11"),
+            ],
+        )];
+        assert_eq!(compare(&a, &b), Vec::new());
+        assert!(a[0].headers.is_empty(), "non-allowlisted headers were kept: {:?}", a[0].headers);
+    }
+
+    #[test]
+    fn distinct_version_ids_are_not_a_difference() {
+        let a = vec![Observation::new(
+            "PutObject",
+            "normal",
+            200,
+            None,
+            [("x-amz-version-id", "0b1c")],
+        )];
+        let b = vec![Observation::new(
+            "PutObject",
+            "normal",
+            200,
+            None,
+            [("x-amz-version-id", "9f8e")],
+        )];
+        assert_eq!(compare(&a, &b), Vec::new());
+    }
+
+    #[test]
+    fn a_null_version_id_against_a_real_one_is_reported() {
+        let a = vec![Observation::new(
+            "PutObject",
+            "normal",
+            200,
+            None,
+            [("x-amz-version-id", "null")],
+        )];
+        let b = vec![Observation::new(
+            "PutObject",
+            "normal",
+            200,
+            None,
+            [("x-amz-version-id", "9f8e")],
+        )];
+        assert_eq!(fields(&compare(&a, &b)), ["header.x-amz-version-id"]);
+    }
+
+    #[test]
+    fn a_body_field_difference_is_reported() {
+        let a = vec![ok("GetBucketLocation").with_field("location_constraint", "us-east-1")];
+        let b = vec![ok("GetBucketLocation").with_field("location_constraint", "eu-west-1")];
+        let differences = compare(&a, &b);
+        assert_eq!(fields(&differences), ["body.location_constraint"]);
+        assert_eq!((differences[0].a.as_str(), differences[0].b.as_str()), ("us-east-1", "eu-west-1"));
+    }
+
+    #[test]
+    fn a_body_field_on_one_side_only_is_reported() {
+        let a = vec![ok("ListObjectsV2").with_field("keys", "[]")];
+        let b = vec![ok("ListObjectsV2")];
+        assert_eq!(fields(&compare(&a, &b)), ["body.keys"]);
+    }
+
+    #[test]
+    fn error_messages_are_never_compared() {
+        let mut a = Observation::new("GetObject", "negative", 404, Some("NoSuchKey".into()), []);
+        let mut b = a.clone();
+        a.message = Some("The specified key does not exist.".into());
+        b.message = Some("Object not found".into());
+        assert_eq!(compare(&[a], &[b]), Vec::new());
+    }
+
+    #[test]
+    fn a_case_observed_on_one_side_only_is_reported() {
+        let a = vec![ok("HeadBucket"), ok("ListBuckets")];
+        let b = vec![ok("HeadBucket")];
+        let differences = compare(&a, &b);
+        assert_eq!(fields(&differences), ["observation"]);
+        assert_eq!(differences[0].op, "ListBuckets");
+        assert_eq!(compared_ops(&a, &b).into_iter().collect::<Vec<_>>(), ["HeadBucket"]);
+    }
+
+    #[test]
+    fn a_case_recorded_twice_is_reported() {
+        let a = vec![ok("HeadBucket"), ok("HeadBucket")];
+        let b = vec![ok("HeadBucket")];
+        assert_eq!(fields(&compare(&a, &b)), ["duplicate_case"]);
+    }
+
+    #[test]
+    fn compared_ops_counts_operations_not_cases() {
+        let negative = Observation::new("HeadBucket", "negative", 404, Some("NotFound".into()), []);
+        let a = vec![ok("HeadBucket"), negative, ok("ListBuckets")];
+        let b = a.clone();
+        assert_eq!(compared_ops(&a, &b).len(), 2);
+    }
+
+    #[test]
+    fn the_report_lists_each_difference_as_op_field_a_b() {
+        let directory = std::env::temp_dir().join(format!("dual-stack-report-{}", uuid::Uuid::new_v4()));
+        let report = Report {
+            schema: 1,
+            run: "unit".into(),
+            stack_a: "legacy".into(),
+            stack_b: "legacy".into(),
+            region_a: None,
+            region_b: Some("eu-west-1".into()),
+            compared_ops: 1,
+            compared_cases: 1,
+            differences: compare(
+                &[ok("GetBucketLocation").with_field("location_constraint", "us-east-1")],
+                &[ok("GetBucketLocation").with_field("location_constraint", "eu-west-1")],
+            ),
+        };
+        let path = report.write_to(&directory).expect("write the report");
+        let json: serde_json::Value = serde_json::from_slice(&std::fs::read(&path).expect("read the report")).expect("parse");
+        let _ = std::fs::remove_dir_all(&directory);
+        assert_eq!(path.file_name().and_then(|name| name.to_str()), Some("unit.json"));
+        assert_eq!(json["compared_ops"], 1);
+        assert_eq!(
+            json["differences"],
+            serde_json::json!([{
+                "op": "GetBucketLocation",
+                "case": "normal",
+                "field": "body.location_constraint",
+                "a": "us-east-1",
+                "b": "eu-west-1",
+            }])
+        );
+    }
+}

crates/e2e_test/src/dual_stack_differential/mod.rs

@@ -0,0 +1,197 @@
+// 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.
+
+//! Dual-stack differential: one `rustfs` binary, two processes, one SDK script (rustfs/backlog#2740).
+//!
+//! Stack A always runs `RUSTFS_S3_STACK=legacy`. Stack B runs the value of `RUSTFS_E2E_STACK_B`
+//! (default `legacy` until the gateway stack is assembled), and `RUSTFS_E2E_STACK_B_REGION`, when
+//! set, starts B in another region so that a difference can be injected by hand. Both servers
+//! answer the script in `scenarios`, which covers every operation of `impl S3 for FS`; `compare`
+//! reports each `(op, field, a, b)` on which the answers differ, and every run writes its report
+//! to `<target>/dual-stack/<run>.json`. Two processes, not two embedded servers: bucket metadata
+//! is process-global, so two stacks in one process would read each other's buckets.
+
+mod compare;
+mod scenarios;
+
+use crate::common::{RustFSTestEnvironment, init_logging, workspace_root};
+use compare::{Difference, Observation, Report, compare, compared_cases, compared_ops, render};
+use std::path::PathBuf;
+use std::time::{SystemTime, UNIX_EPOCH};
+
+type BoxError = Box<dyn std::error::Error + Send + Sync>;
+
+const STACK_A: &str = "legacy";
+const ENV_STACK_B: &str = "RUSTFS_E2E_STACK_B";
+const ENV_STACK_B_REGION: &str = "RUSTFS_E2E_STACK_B_REGION";
+/// Becomes `gateway` once rustfs/backlog#2734 T2.5 assembles the gateway stack.
+const DEFAULT_STACK_B: &str = "legacy";
+/// The region the negative control gives stack A explicitly, so an inherited `RUSTFS_REGION`
+/// cannot erase the injected difference.
+const CONTROL_REGION_A: &str = "us-east-1";
+const CONTROL_REGION_B: &str = "eu-west-1";
+/// `normal` cases the legacy stack must answer with a 2xx. The comparison alone cannot tell a
+/// script that exercises real behavior from one in which both stacks fail the same way. Five of
+/// the 73 fail on legacy by design of this script: PutBucketReplication (no registered remote
+/// target), GetBucketReplication (so no configuration), PutBucketNotificationConfiguration (no
+/// notification target configured), RestoreObject (the object is not archived) and
+/// GetObjectTorrent (legacy answers `NoSuchKey`).
+const MIN_NORMAL_SUCCESSES: usize = 68;
+
+struct PairConfig {
+    stack_b: String,
+    region_a: Option<String>,
+    region_b: Option<String>,
+}
+
+impl PairConfig {
+    fn from_env() -> Self {
+        Self {
+            stack_b: std::env::var(ENV_STACK_B).unwrap_or_else(|_| DEFAULT_STACK_B.to_owned()),
+            region_a: None,
+            region_b: std::env::var(ENV_STACK_B_REGION).ok(),
+        }
+    }
+}
+
+/// Starts one server on `stack`, overriding its region only when asked.
+async fn start_stack(stack: &str, region: Option<&str>) -> Result<RustFSTestEnvironment, BoxError> {
+    let mut env = RustFSTestEnvironment::new().await?;
+    let mut vars = vec![("RUSTFS_S3_STACK", stack)];
+    if let Some(region) = region {
+        vars.push(("RUSTFS_REGION", region));
+    }
+    env.start_rustfs_server_without_cleanup_with_env(&vars).await?;
+    Ok(env)
+}
+
+/// Starts stack A and stack B side by side, each with its own port and data directory.
+async fn spawn_pair(config: &PairConfig) -> Result<(RustFSTestEnvironment, RustFSTestEnvironment), BoxError> {
+    tokio::try_join!(
+        start_stack(STACK_A, config.region_a.as_deref()),
+        start_stack(&config.stack_b, config.region_b.as_deref())
+    )
+}
+
+fn report_directory() -> PathBuf {
+    let target = std::env::var_os("CARGO_TARGET_DIR").map_or_else(|| PathBuf::from("target"), PathBuf::from);
+    let target = if target.is_absolute() {
+        target
+    } else {
+        workspace_root().join(target)
+    };
+    target.join("dual-stack")
+}
+
+struct Run {
+    report: Report,
+    path: PathBuf,
+    a: Vec<Observation>,
+}
+
+/// Runs the script against both stacks concurrently and writes the report.
+async fn run_differential(label: &str, config: &PairConfig) -> Run {
+    let (server_a, server_b) = spawn_pair(config).await.expect("start stack A and stack B");
+    let (a, b) = tokio::join!(Box::pin(scenarios::run(&server_a)), Box::pin(scenarios::run(&server_b)));
+    let millis = SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .map_or(0, |elapsed| elapsed.as_millis());
+    let report = Report {
+        schema: 1,
+        run: format!("{label}-{millis}-{}", std::process::id()),
+        stack_a: STACK_A.to_owned(),
+        stack_b: config.stack_b.clone(),
+        region_a: config.region_a.clone(),
+        region_b: config.region_b.clone(),
+        compared_ops: compared_ops(&a, &b).len(),
+        compared_cases: compared_cases(&a, &b),
+        differences: compare(&a, &b),
+    };
+    let path = report.write_to(&report_directory()).expect("write the dual-stack report");
+    Run { report, path, a }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[tokio::test]
+    async fn both_stacks_answer_every_operation_identically() {
+        init_logging();
+        let config = PairConfig::from_env();
+        let run = run_differential("self-comparison", &config).await;
+        let report = &run.report;
+
+        let mut observed: Vec<_> = run.a.iter().map(|observation| observation.op).collect();
+        observed.sort_unstable();
+        observed.dedup();
+        assert_eq!(
+            observed,
+            scenarios::OPERATIONS,
+            "the script must drive exactly the operations of impl S3 for FS"
+        );
+        assert_eq!(report.compared_ops, scenarios::OPERATIONS.len(), "report: {}", run.path.display());
+        assert!(
+            report.differences.is_empty(),
+            "stack {} and stack {} differ on {} of {} cases (report: {}):\n{}",
+            report.stack_a,
+            report.stack_b,
+            report.differences.len(),
+            report.compared_cases,
+            run.path.display(),
+            render(&report.differences)
+        );
+
+        let not_4xx: Vec<_> = run
+            .a
+            .iter()
+            .filter(|observation| observation.case == "negative" && !(400..500).contains(&observation.status))
+            .collect();
+        assert!(not_4xx.is_empty(), "negative cases must fail with a 4xx on {STACK_A}: {not_4xx:#?}");
+        let successes = run
+            .a
+            .iter()
+            .filter(|observation| observation.case == "normal" && observation.is_success())
+            .count();
+        assert!(
+            successes >= MIN_NORMAL_SUCCESSES,
+            "only {successes} normal cases succeeded on {STACK_A}: {:#?}",
+            run.a
+        );
+    }
+
+    #[tokio::test]
+    async fn differential_detects_an_injected_difference() {
+        init_logging();
+        let config = PairConfig {
+            stack_b: STACK_A.to_owned(),
+            region_a: Some(CONTROL_REGION_A.to_owned()),
+            region_b: Some(CONTROL_REGION_B.to_owned()),
+        };
+        let run = run_differential("injected-region", &config).await;
+        let expected = Difference {
+            op: "GetBucketLocation".to_owned(),
+            case: "normal".to_owned(),
+            field: "body.location_constraint".to_owned(),
+            a: CONTROL_REGION_A.to_owned(),
+            b: CONTROL_REGION_B.to_owned(),
+        };
+        assert!(
+            run.report.differences.contains(&expected),
+            "B started in {CONTROL_REGION_B} but GetBucketLocation was not reported (report: {}):\n{}",
+            run.path.display(),
+            render(&run.report.differences)
+        );
+    }
+}

crates/e2e_test/src/heal_erasure_disk_rebuild_test.rs

@@ -1191,11 +1191,59 @@ mod tests {
         .into())
     }
 
+    fn scanner_cycle_completion_budget(
+        cycle_end: u64,
+        interval: Option<u64>,
+        now: u64,
+        active: bool,
+    ) -> Result<Duration, &'static str> {
+        if cycle_end > now {
+            return Err("scanner cycle timestamp is in the future");
+        }
+        if active {
+            return Ok(Duration::from_secs(60));
+        }
+        let interval = interval
+            .filter(|interval| *interval != 0)
+            .ok_or("scanner schedule has no positive interval")?;
+        let next_cycle = cycle_end
+            .checked_add(interval)
+            .ok_or("scanner schedule timestamp overflows")?;
+        let budget = next_cycle
+            .saturating_sub(now)
+            .checked_add(60)
+            .ok_or("scanner completion budget overflows")?;
+        Ok(Duration::from_secs(budget))
+    }
+
+    #[test]
+    fn scanner_cycle_completion_budget_accounts_for_captured_retry_schedule() {
+        assert_eq!(
+            scanner_cycle_completion_budget(1_791_815_390, Some(256), 1_791_815_447, false),
+            Ok(Duration::from_secs(259)),
+        );
+        assert_eq!(scanner_cycle_completion_budget(100, Some(1), 110, false), Ok(Duration::from_secs(60)));
+    }
+
+    #[test]
+    fn scanner_cycle_completion_budget_does_not_grant_planned_sleep_to_active_cycle() {
+        assert_eq!(scanner_cycle_completion_budget(100, Some(256), 110, true), Ok(Duration::from_secs(60)));
+        assert_eq!(scanner_cycle_completion_budget(0, None, 110, true), Ok(Duration::from_secs(60)));
+    }
+
+    #[test]
+    fn scanner_cycle_completion_budget_rejects_invalid_schedule() {
+        for (end, interval, now) in [(101, 1, 100), (100, 0, 100), (u64::MAX, 1, u64::MAX), (1, u64::MAX - 1, 1)] {
+            assert!(scanner_cycle_completion_budget(end, Some(interval), now, false).is_err());
+        }
+    }
+
     async fn wait_for_scanner_cycle_after(
         cluster: &RustFSTestClusterEnvironment,
         previous_cycle_end: u64,
     ) -> Result<u64, Box<dyn Error + Send + Sync>> {
-        let deadline = Instant::now() + Duration::from_secs(60);
+        let mut deadline = Instant::now() + Duration::from_secs(60);
+        let mut schedule_accounted = false;
         loop {
             let mut latest_cycle_end = 0;
             let mut versions_observed = false;
@@ -1237,14 +1285,36 @@ mod tests {
                 let versions_scanned = metrics["versions_scanned"]
                     .as_u64()
                     .ok_or("scanner status is missing its version-coverage counter")?;
-                latest_cycle_end = latest_cycle_end.max(cycle_end);
+                let now = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH)?.as_secs();
+                if cycle_end > now {
+                    return Err("scanner cycle timestamp is in the future".into());
+                }
+                let schedule = &status["cycle_schedule"];
+                if !schedule_accounted && schedule["execution_role"].as_str() == Some("leader") {
+                    let active = metrics["current_cycle_active"]
+                        .as_bool()
+                        .ok_or("scanner status is missing its active-cycle flag")?;
+                    if active || (cycle_end != 0 && schedule["effective_interval_available"].as_bool() == Some(true)) {
+                        let interval = schedule["effective_interval_seconds"].as_u64();
+                        let budget = scanner_cycle_completion_budget(cycle_end, interval, now, active)?;
+                        deadline = Instant::now().checked_add(budget).ok_or("scanner deadline overflows")?;
+                        schedule_accounted = true;
+                    }
+                }
+                // Superseded walks complete all sets while withholding quota authority.
+                // Deferred and partial attempts do not certify completed scanning.
+                if matches!(metrics["last_cycle_result"].as_str(), Some("success" | "superseded")) {
+                    latest_cycle_end = latest_cycle_end.max(cycle_end);
+                }
                 versions_observed |= versions_scanned > 0;
                 observations.push(format!(
-                    "node{node_index}: end={cycle_end}, versions={versions_scanned}, cycle={}, active={}, leader={}, result={}",
+                    "node{node_index}: end={cycle_end}, versions={versions_scanned}, cycle={}, active={}, leader={}, result={}, partial_reason={}, schedule={}",
                     metrics["current_cycle"],
                     metrics["current_cycle_active"],
                     metrics["leader_lock_state"],
                     metrics["last_cycle_result"],
+                    metrics["last_cycle_partial_reason"],
+                    schedule,
                 ));
             }
             // The coordinator records cycle completion, but remote workers
@@ -1555,7 +1625,8 @@ mod tests {
         }
 
         if background_enabled {
-            wait_for_scanner_cycle_after(&cluster, 0).await?;
+            let baseline_cycle_floor = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH)?.as_secs();
+            wait_for_scanner_cycle_after(&cluster, baseline_cycle_floor).await?;
         }
 
         cluster.stop_node(1)?;

crates/e2e_test/src/internode_rpc_signature_e2e_test.rs

@@ -264,7 +264,7 @@ async fn call_make_volume_response(
     request: MakeVolumeRequest,
     headers: HeaderMap,
 ) -> Result<Response<MakeVolumeResponse>, Status> {
-    let mut client = node_service_time_out_client_no_auth(&url.to_string())
+    let mut client = node_service_time_out_client_no_auth(url)
         .await
         .map_err(|err| Status::unavailable(format!("cannot reach the node service: {err}")))?;
     let mut rpc_request = Request::new(request);
@@ -273,7 +273,7 @@ async fn call_make_volume_response(
 }
 
 async fn call_ping_response(url: &str, headers: HeaderMap) -> Result<Response<PingResponse>, Status> {
-    let mut client = node_service_time_out_client_no_auth(&url.to_string())
+    let mut client = node_service_time_out_client_no_auth(url)
         .await
         .map_err(|err| Status::unavailable(format!("cannot reach the node service: {err}")))?;
     let mut rpc_request = Request::new(PingRequest {

crates/e2e_test/src/lib.rs

@@ -31,6 +31,12 @@ pub mod chaos;
 #[cfg(test)]
 pub mod fake_s3_target;
 
+// Dual-stack differential (rustfs/backlog#2740): one binary, two processes on
+// different RUSTFS_S3_STACK values, the same SDK script for every S3 operation,
+// compared on status, error code, allowlisted headers and typed body fields.
+#[cfg(test)]
+mod dual_stack_differential;
+
 // On-demand migration (backlog#2147): shared two-server environment, admin
 // wrappers, and the harness self-test (backlog#2151). Behavior scenarios are
 // added by later ODM tasks.

crates/e2e_test/src/namespace_lock_quorum_test.rs

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use crate::common::RustFSTestClusterEnvironment;
+use crate::common::{ClusterTopology, RustFSTestClusterEnvironment};
 use aws_sdk_s3::Client;
 use aws_sdk_s3::error::SdkError;
 use bytes::Bytes;
@@ -185,7 +185,11 @@ async fn wait_for_quorum_read_admission(clients: &[Client], bucket: &str) -> Tes
             return Ok(());
         }
         if tokio::time::Instant::now() >= deadline {
-            return Err(format!("read quorum did not become available after lease convergence for {bucket}").into());
+            let diagnostics = clients[0].get_object().bucket(bucket).key("warm-small").send().await;
+            return Err(format!(
+                "read quorum did not become available after lease convergence for {bucket}: GET={diagnostics:?}"
+            )
+            .into());
         }
         tokio::time::sleep(std::time::Duration::from_millis(100)).await;
     }
@@ -195,11 +199,14 @@ async fn wait_for_quorum_read_admission(clients: &[Client], bucket: &str) -> Tes
 async fn test_degraded_cluster_read_quorum_follows_erasure_layout() -> TestResult {
     crate::common::init_logging();
 
-    for (node_count, parity) in [(4, 2), (6, 3), (6, 2)] {
+    for (node_count, parity) in [(3, 1), (4, 2), (6, 3), (6, 2), (4, 0)] {
         let read_quorum = node_count - parity;
         let write_quorum = read_quorum + usize::from(read_quorum == parity);
         let mut cluster = RustFSTestClusterEnvironment::new(node_count).await?;
         cluster.set_env("RUSTFS_STORAGE_CLASS_STANDARD", format!("EC:{parity}"));
+        if parity == 0 {
+            cluster.set_env("RUSTFS_STORAGE_CLASS_RRS", "EC:0");
+        }
         // Wait for every seed fanout before removing any physical shard.
         cluster.set_env("RUSTFS_PUT_RENAME_EARLY_ACK_ENABLE", "false");
         cluster.set_env("RUSTFS_OBS_METRICS_EXPORT_ENABLED", "false");
@@ -338,6 +345,277 @@ async fn test_degraded_cluster_read_quorum_follows_erasure_layout() -> TestResul
     Ok(())
 }
 
+#[tokio::test]
+async fn test_cold_start_read_quorum_follows_erasure_layout() -> TestResult {
+    crate::common::init_logging();
+    for (node_count, parity) in [(3, 1), (4, 2), (6, 3), (6, 2), (4, 0)] {
+        let read_quorum = node_count - parity;
+        let write_quorum = read_quorum + usize::from(read_quorum == parity);
+        let mut cluster = RustFSTestClusterEnvironment::new(node_count).await?;
+        cluster.set_env("RUSTFS_STORAGE_CLASS_STANDARD", format!("EC:{parity}"));
+        if parity == 0 {
+            cluster.set_env("RUSTFS_STORAGE_CLASS_RRS", "EC:0");
+        }
+        cluster.set_env("RUSTFS_PUT_RENAME_EARLY_ACK_ENABLE", "false");
+        cluster.set_env("RUSTFS_OBS_METRICS_EXPORT_ENABLED", "false");
+        cluster.set_env("RUST_LOG", "warn");
+        cluster.start().await?;
+        let clients = cluster
+            .create_all_clients()?
+            .into_iter()
+            .map(|client| {
+                Client::from_conf(
+                    client
+                        .config()
+                        .to_builder()
+                        .retry_config(aws_sdk_s3::config::retry::RetryConfig::standard().with_max_attempts(1))
+                        .build(),
+                )
+            })
+            .collect::<Vec<_>>();
+        let bucket = format!("cold-read-quorum-{node_count}-{parity}");
+        clients[0].create_bucket().bucket(&bucket).send().await?;
+        let small = b"cold startup follows the stored EC layout".to_vec();
+        let large = vec![73; 256 * 1024];
+        for (key, body) in [
+            ("warm-small", &small),
+            ("warm-large", &large),
+            ("cold-large", &large),
+            ("below-quorum", &large),
+        ] {
+            clients[0]
+                .put_object()
+                .bucket(&bucket)
+                .key(key)
+                .body(Bytes::copy_from_slice(body).into())
+                .send()
+                .await?;
+            for node in &cluster.nodes {
+                let census =
+                    crate::chaos::census_object_version_on_disk(std::path::Path::new(&node.data_dir), &bucket, key, None)?;
+                assert!(census.is_complete(), "seed shard must exist before cold startup: {census:?}");
+                assert_eq!((census.data_blocks, census.parity_blocks), (Some(read_quorum), Some(parity)));
+            }
+        }
+        for node in 0..node_count {
+            cluster.stop_node(node)?;
+        }
+        // Rebuild every process's in-memory state below read quorum, then
+        // cross the EC boundary. A format bootstrap must not admit S3 reads
+        // merely because half the peers are online (e.g. six disks, EC:2).
+        for node in 0..read_quorum - 1 {
+            cluster.start_node_process(node).await?;
+        }
+        let error = clients[0]
+            .get_object()
+            .bucket(&bucket)
+            .key("below-quorum")
+            .send()
+            .await
+            .expect_err("cold startup below the configured EC read quorum must stay unavailable");
+        assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(503));
+        cluster.start_node_process(read_quorum - 1).await?;
+        wait_for_quorum_read_admission(&clients[..read_quorum], &bucket).await?;
+        for client in clients.iter().take(read_quorum) {
+            assert_quorum_object_body(client, &bucket, "warm-small", &small).await?;
+            assert_quorum_object_body(client, &bucket, "cold-large", &large).await?;
+            let write = client
+                .put_object()
+                .bucket(&bucket)
+                .key("cold-quorum-write")
+                .body(Bytes::copy_from_slice(&small).into())
+                .send()
+                .await;
+            if read_quorum >= write_quorum {
+                write?;
+                assert_quorum_object_body(client, &bucket, "cold-quorum-write", &small).await?;
+            } else {
+                let error = write.expect_err("cold startup at read quorum must preserve the EC write quorum");
+                assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(503));
+            }
+        }
+        for node in read_quorum..node_count {
+            cluster.start_node(node).await?;
+        }
+        for client in &clients {
+            assert_quorum_object_body(client, &bucket, "cold-large", &large).await?;
+        }
+    }
+    Ok(())
+}
+
+#[tokio::test]
+async fn test_four_by_six_cold_start_at_read_quorum() -> TestResult {
+    crate::common::init_logging();
+    let mut cluster = RustFSTestClusterEnvironment::with_topology(ClusterTopology::single_pool_multidrive(4, 6)).await?;
+    // Explicit URLs are consumed in order. Place one drive from each node in
+    // every set, matching a four-host, six-drive-per-host deployment.
+    let volumes = (0..6)
+        .flat_map(|drive| {
+            cluster
+                .nodes
+                .iter()
+                .map(move |node| format!("http://{}{}", node.address, node.data_dirs[drive]))
+        })
+        .collect::<Vec<_>>()
+        .join(" ");
+    cluster.set_env("RUSTFS_VOLUMES", volumes);
+    cluster.set_env("RUSTFS_ERASURE_SET_DRIVE_COUNT", "4");
+    cluster.set_env("RUSTFS_STORAGE_CLASS_STANDARD", "EC:2");
+    cluster.set_env("RUSTFS_PUT_RENAME_EARLY_ACK_ENABLE", "false");
+    cluster.set_env("RUSTFS_OBS_METRICS_EXPORT_ENABLED", "false");
+    cluster.set_env("RUST_LOG", "error");
+    cluster.start().await?;
+    let clients = cluster
+        .create_all_clients()?
+        .into_iter()
+        .map(|client| {
+            Client::from_conf(
+                client
+                    .config()
+                    .to_builder()
+                    .retry_config(aws_sdk_s3::config::retry::RetryConfig::standard().with_max_attempts(1))
+                    .build(),
+            )
+        })
+        .collect::<Vec<_>>();
+    let bucket = "cold-start-read-quorum";
+    clients[0].create_bucket().bucket(bucket).send().await?;
+    let mut fixtures = Vec::new();
+    let mut covered = [[false; 2]; 6];
+    for index in 0..128 {
+        let key = match index {
+            0 => "warm-small".to_string(),
+            1 => "warm-large".to_string(),
+            _ => format!("cold-{index}"),
+        };
+        let size_class = index % 2;
+        let size = if size_class == 0 { 71 } else { 256 * 1024 };
+        let body = (0..size)
+            .map(|offset| u8::try_from(offset % 251).expect("bounded fixture byte"))
+            .collect::<Vec<_>>();
+        clients[0]
+            .put_object()
+            .bucket(bucket)
+            .key(&key)
+            .body(Bytes::copy_from_slice(&body).into())
+            .send()
+            .await?;
+        for node in &cluster.nodes {
+            let mut complete_shards = 0;
+            for (drive, path) in node.data_dirs.iter().enumerate() {
+                let census = crate::chaos::census_object_version_on_disk(std::path::Path::new(path), bucket, &key, None)?;
+                if census.has_xl_meta {
+                    assert!(census.is_complete(), "seed shard must be complete before shutdown: {census:?}");
+                    assert_eq!((census.data_blocks, census.parity_blocks), (Some(2), Some(2)));
+                    covered[drive][size_class] = true;
+                    complete_shards += 1;
+                }
+            }
+            assert_eq!(complete_shards, 1, "each node must own one shard of every seed object");
+        }
+        fixtures.push((key, body));
+        if covered.iter().flatten().all(|covered| *covered) {
+            break;
+        }
+    }
+    assert!(
+        covered.iter().flatten().all(|covered| *covered),
+        "fixtures must cover all six sets with inline and large objects"
+    );
+
+    for first in 0..4 {
+        for second in first + 1..4 {
+            for node in 0..4 {
+                cluster.stop_node(node)?;
+            }
+            cluster.start_node_process(first).await?;
+            let error = clients[first]
+                .get_object()
+                .bucket(bucket)
+                .key("warm-large")
+                .send()
+                .await
+                .expect_err("one node cannot satisfy read quorum after a cold start");
+            assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(503));
+            cluster.start_node_process(second).await?;
+            wait_for_quorum_read_admission(&[clients[first].clone(), clients[second].clone()], bucket).await?;
+            for node in [first, second] {
+                for (key, body) in &fixtures {
+                    assert_quorum_object_body(&clients[node], bucket, key, body).await?;
+                }
+                let range = clients[node]
+                    .get_object()
+                    .bucket(bucket)
+                    .key("warm-large")
+                    .range("bytes=17-1023")
+                    .send()
+                    .await?;
+                assert_eq!(range.body.collect().await?.into_bytes().as_ref(), &fixtures[1].1[17..1024]);
+                let listing = clients[node].list_objects_v2().bucket(bucket).send().await?;
+                for (key, _) in &fixtures {
+                    assert!(
+                        listing.contents().iter().any(|object| object.key() == Some(key.as_str())),
+                        "listing omitted {key}"
+                    );
+                }
+                let error = clients[node]
+                    .put_object()
+                    .bucket(bucket)
+                    .key("recovery-write")
+                    .body(Bytes::from_static(b"after recovery").into())
+                    .send()
+                    .await
+                    .expect_err("two nodes must not authorize a write");
+                assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(503));
+            }
+            let error = clients[first]
+                .delete_object()
+                .bucket(bucket)
+                .key("warm-large")
+                .send()
+                .await
+                .expect_err("two nodes must not authorize a delete");
+            assert_eq!(error.raw_response().map(|response| response.status().as_u16()), Some(503));
+            assert_quorum_object_body(&clients[first], bucket, "warm-large", &fixtures[1].1).await?;
+
+            let remaining = (0..4).filter(|node| *node != first && *node != second).collect::<Vec<_>>();
+            cluster.start_node(remaining[0]).await?;
+            let deadline = tokio::time::Instant::now() + Duration::from_secs(90);
+            loop {
+                match clients[first]
+                    .put_object()
+                    .bucket(bucket)
+                    .key("recovery-write")
+                    .body(Bytes::from_static(b"after recovery").into())
+                    .send()
+                    .await
+                {
+                    Ok(_) => break,
+                    Err(error)
+                        if error.raw_response().is_some_and(|response| response.status().as_u16() == 503)
+                            && tokio::time::Instant::now() < deadline =>
+                    {
+                        tokio::time::sleep(Duration::from_millis(200)).await
+                    }
+                    Err(error) => return Err(error.into()),
+                }
+            }
+            for node in [first, second, remaining[0]] {
+                assert_quorum_object_body(&clients[node], bucket, "recovery-write", b"after recovery").await?;
+            }
+            cluster.start_node(remaining[1]).await?;
+            for client in &clients {
+                for (key, body) in &fixtures {
+                    assert_quorum_object_body(client, bucket, key, body).await?;
+                }
+                assert_quorum_object_body(client, bucket, "recovery-write", b"after recovery").await?;
+            }
+        }
+    }
+    Ok(())
+}
+
 async fn put_object(client: Client, payload: Vec<u8>, writer_id: usize) -> Result<(), String> {
     client
         .put_object()

crates/e2e_test/src/reliant/grpc_lock_server.rs

@@ -465,6 +465,13 @@ impl NodeService for MinimalLockNodeService {
         Err(Status::unimplemented("lock-only test server"))
     }
 
+    async fn recover_delete_transaction(
+        &self,
+        _request: Request<rustfs_protos::proto_gen::node_service::RecoverDeleteTransactionRequest>,
+    ) -> Result<Response<rustfs_protos::proto_gen::node_service::RecoverDeleteTransactionResponse>, Status> {
+        Err(Status::unimplemented("delete recovery is not supported by the lock fixture"))
+    }
+
     async fn settle_part_transaction(
         &self,
         _request: Request<rustfs_protos::proto_gen::node_service::SettlePartTransactionRequest>,

crates/e2e_test/src/sts_query_compat_test.rs

@@ -740,7 +740,7 @@ async fn test_bucket_tags_opa_contract() -> TestResult {
         .version_id(version)
         .send()
         .await?;
-    opa.expect_bucket_tags("s3:GetObject", source, Some("finance")).await?;
+    opa.expect_bucket_tags("s3:GetObjectVersion", source, Some("finance")).await?;
     client.list_objects_v2().bucket(source).send().await?;
     opa.expect_bucket_tags("s3:ListBucket", source, Some("finance")).await?;
     client.list_object_versions().bucket(source).send().await?;

crates/e2e_test/src/upgrade_compatibility_test.rs

@@ -2345,7 +2345,7 @@ fn layout_reported_parts(attributes: &aws_sdk_s3::operation::get_object_attribut
     attributes.object_parts().map(|parts| parts.parts().len())
 }
 
-async fn assert_layout_readable(client: &Client, case: &LayoutCase, context: &str) -> TestResult {
+async fn assert_layout_full_body(client: &Client, case: &LayoutCase, context: &str) -> TestResult {
     let label = case.label();
     let head = layout_head(client, case).await?;
     assert_eq!(
@@ -2362,7 +2362,12 @@ async fn assert_layout_readable(client: &Client, case: &LayoutCase, context: &st
     let full = layout_get(client, case, None, None).await?.body.collect().await?.into_bytes();
     assert_eq!(full.len(), case.body.len(), "{context}: {label}: full GET length");
     assert!(full == case.body, "{context}: {label}: full GET body must equal the rc.5 upload");
+    Ok(())
+}
 
+async fn assert_layout_readable(client: &Client, case: &LayoutCase, context: &str) -> TestResult {
+    assert_layout_full_body(client, case, context).await?;
+    let label = case.label();
     if case.is_multipart_layout() {
         let first = case.part_sizes[0];
         let range = format!("bytes={}-{}", first - 32, first + 31);
@@ -2641,10 +2646,11 @@ async fn direct_upgrade_from_rc5_preserves_multipart_layouts() -> TestResult {
             "rc.5 wrote a legacy layout"
         );
     }
-    // The rc.5 writer must itself still read what it wrote, so a later
-    // failure is attributable to the upgrade rather than to the fixture.
+    // Prove the rc.5 writer persisted every original byte before upgrading.
+    // Its compressed cross-part range reader has a legacy limitation; the
+    // upgraded reader must still satisfy every range and partNumber assertion.
     for case in &cases {
-        assert_layout_readable(&old_client, case, "rc.5").await?;
+        assert_layout_full_body(&old_client, case, "rc.5").await?;
     }
 
     // Upgrade in place.

crates/ecstore/src/api/mod.rs

@@ -199,10 +199,10 @@ pub mod bucket {
             get_object_lock_config, get_object_lock_config_state, get_on_demand_migration_config,
             get_on_demand_migration_config_in, get_public_access_block_config, get_quota_config, get_replication_config,
             get_request_payment_config, get_sse_config, get_tagging_config, get_versioning_config, get_website_config,
-            init_bucket_metadata_sys, list_bucket_targets, reload_bucket_metadata, remove_bucket_metadata, set_bucket_metadata,
-            update, update_bucket_targets_under_transaction_lock, update_config_with, update_if_incarnation,
-            update_if_incarnation_at, update_quota_if_incarnation, update_quota_if_incarnation_at, update_under_transaction_lock,
-            update_under_transaction_lock_at,
+            init_bucket_metadata_sys, list_bucket_targets, reload_bucket_metadata, remove_bucket_metadata,
+            remove_bucket_metadata_if_absent, set_bucket_metadata, update, update_bucket_targets_under_transaction_lock,
+            update_config_with, update_if_incarnation, update_if_incarnation_at, update_quota_if_incarnation,
+            update_quota_if_incarnation_at, update_under_transaction_lock, update_under_transaction_lock_at,
         };
         #[cfg(feature = "test-util")]
         pub use crate::bucket::metadata_sys::{ConfigWriteLockProbe, test_support};
@@ -210,7 +210,8 @@ pub mod bucket {
 
     pub mod migration {
         pub use crate::bucket::migration::{
-            LegacyBlobDecryptFn, migration_startup_error, try_migrate_bucket_metadata, try_migrate_iam_config,
+            LegacyBlobDecryptFn, migration_startup_error, try_migrate_bucket_metadata, try_migrate_bucket_metadata_for_buckets,
+            try_migrate_iam_config,
         };
     }
 
@@ -371,24 +372,6 @@ pub mod config {
             with_config_object_read_lock, with_config_object_write_lock, with_server_config_read_lock,
             with_server_config_write_lock,
         };
-
-        /// 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 {
@@ -440,11 +423,12 @@ pub mod disk {
     pub use crate::disk::os::{LocalPublicationPause, LocalPublicationStage};
     pub use crate::disk::{
         BATCH_READ_VERSION_MAX_ITEMS, BUCKET_META_PREFIX, BatchReadVersionItem, BatchReadVersionReq, BatchReadVersionResp,
-        CheckPartsResp, ConditionalFileUpdate, DeleteOptions, Disk, DiskAPI, DiskInfo, DiskInfoOptions, DiskLocation, DiskOption,
-        DiskStore, FileInfoVersions, FileReader, FileWriter, HEALING_MARKER_PATH, NsScannerOpenRequest, OldCurrentSize,
-        PartTransactionAction, RUSTFS_META_BUCKET, ReadMultipleReq, ReadMultipleResp, ReadOptions, RenameDataResp,
-        STORAGE_FORMAT_FILE, SnapshotLeaseToken, UpdateMetadataOpts, VolumeInfo, WalkDirOptions, new_disk,
-        validate_batch_read_version_item_count,
+        CheckPartsResp, ConditionalFileUpdate, DELETE_RECOVERY_PROTOCOL_VERSION, DeleteOptions, DeleteRecoveryAction,
+        DeleteRecoveryCursor, DeleteRecoveryDigest, DeleteRecoveryInspection, DeleteRecoveryPage, DeleteRecoveryRpcOperation,
+        DeleteRecoveryRpcReply, Disk, DiskAPI, DiskInfo, DiskInfoOptions, DiskLocation, DiskOption, DiskStore, FileInfoVersions,
+        FileReader, FileWriter, HEALING_MARKER_PATH, NsScannerOpenRequest, OldCurrentSize, PartTransactionAction,
+        RUSTFS_META_BUCKET, ReadMultipleReq, ReadMultipleResp, ReadOptions, RenameDataResp, STORAGE_FORMAT_FILE,
+        SnapshotLeaseToken, UpdateMetadataOpts, VolumeInfo, WalkDirOptions, new_disk, validate_batch_read_version_item_count,
     };
     pub use bytes::Bytes;
     pub use endpoint::Endpoint;
@@ -537,13 +521,14 @@ pub mod integrity {
 pub mod object {
     pub use crate::object_api::{
         BLOCK_SIZE_V2, ERASURE_ALGORITHM, EncryptionResolutionError, EncryptionResolutionErrorKind, GetObjectBodyCacheHook,
-        GetObjectBodyCacheHookLookup, GetObjectBodySource, GetObjectReader, NamespaceLockFence, ObjectEncryptionResolver,
-        ObjectInfo, ObjectLockConfigSnapshot, ObjectMutationHook, ObjectOptions, PutObjReader, QuotaAdmission,
-        RangedDecompressReader, ReadEncryptionMaterial, ReadEncryptionMode, ReadEncryptionRequest,
+        GetObjectBodyCacheHookLookup, GetObjectBodySource, GetObjectReadCondition, GetObjectReadMetadata, GetObjectReader,
+        NamespaceLockFence, ObjectEncryptionResolver, ObjectInfo, ObjectLockConfigSnapshot, ObjectMutationHook, ObjectOptions,
+        PutObjReader, QuotaAdmission, RangedDecompressReader, ReadEncryptionMaterial, ReadEncryptionMode, ReadEncryptionRequest,
         SCANNER_PUBLICATION_LEASE_FENCE_METADATA_KEY, ScannerPublicationCommitScope, ScannerPublicationCommitStartError,
         ScannerPublicationCommitState, ShardIntegrityWriteMode, StreamConsumer, WriteCommitGuard, WriteCompletion,
         get_object_body_cache_plaintext_len, lookup_get_object_body_cache_hook, register_get_object_body_cache_hook,
         register_object_mutation_hook, unregister_get_object_body_cache_hook, unregister_object_mutation_hook,
+        with_get_object_read_condition,
     };
     pub use crate::store::{
         PrepareSelectObjectSnapshotError, PreparedGetObjectReader, SelectObjectSnapshot, SelectObjectSnapshotReadError,
@@ -608,6 +593,7 @@ pub mod set_disk {
     #[cfg(feature = "test-util")]
     pub mod test_util {
         pub use crate::bucket::quota::reservation::fail_next_quota_ledger_save_for_test;
+        pub use crate::set_disk::ConditionalReadBenchmarkMetadataGuard;
         pub use crate::set_disk::{MultipartCommitBarrier, MultipartCommitPause, PutObjectCommitBarrier, PutObjectCommitPause};
 
         /// Keep a namespace commit pending until the returned owner is dropped.

crates/ecstore/src/bucket/lifecycle/bucket_lifecycle_ops.rs

@@ -14214,7 +14214,11 @@ mod tests {
     #[tokio::test]
     #[serial]
     async fn tier_free_version_recovery_production_entrypoint_enqueues_seeded_item() {
-        let (disk_paths, ecstore) = setup_test_env().await;
+        let (disk_paths, ecstore) =
+            temp_env::async_with_vars([(super::ENV_TIER_FREE_VERSION_RECOVERY_ENABLED, Some("false"))], async {
+                setup_test_env().await
+            })
+            .await;
         let runtime_state = install_unconsumed_runtime_expiry_worker(&ecstore, 1).await;
         let recovery_rx = {
             let state = runtime_state.read().await;

crates/ecstore/src/bucket/metadata.rs

@@ -439,6 +439,8 @@ pub struct BucketMetadata {
     pub bucket_incarnation_id: Uuid,
     pub(crate) bucket_incarnation_sidecar: bool,
     pub(crate) bucket_creation_committed: bool,
+    // A legacy default is not proof of an interrupted creation.
+    pub(crate) bucket_creation_commit_record_present: bool,
     pub policy_config_json: Vec<u8>,
     pub notification_config_xml: Vec<u8>,
     pub lifecycle_config_xml: Vec<u8>,
@@ -514,6 +516,7 @@ impl Default for BucketMetadata {
             bucket_incarnation_id: Uuid::nil(),
             bucket_incarnation_sidecar: false,
             bucket_creation_committed: false,
+            bucket_creation_commit_record_present: false,
             policy_config_json: Default::default(),
             notification_config_xml: Default::default(),
             lifecycle_config_xml: Default::default(),
@@ -752,7 +755,10 @@ impl BucketMetadata {
                 "TableBucketConfigUpdatedAt" => self.table_bucket_config_updated_at = read_msgp_time_value(rd)?,
                 "DurabilityConfigUpdatedAt" => self.durability_config_updated_at = read_msgp_time_value(rd)?,
                 "OnDemandMigrationConfigUpdatedAt" => self.on_demand_migration_config_updated_at = read_msgp_time_value(rd)?,
-                "BucketCreationCommitted" => self.bucket_creation_committed = read_msgp_bool(rd)?,
+                "BucketCreationCommitted" => {
+                    self.bucket_creation_committed = read_msgp_bool(rd)?;
+                    self.bucket_creation_commit_record_present = true;
+                }
                 other => {
                     tracing::debug!(field = %other, "BucketMetadata decode_from: skipping unknown field");
                     skip_msgp_value(rd)?;
@@ -765,8 +771,10 @@ 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;
+        // Preserve the absence of a legacy commit record across config rewrites.
+        let commit_record_present = self.bucket_creation_commit_record_present || self.bucket_creation_committed;
+        // Map size: MinIO fields (25) + RustFS extensions (21) + optional commit record.
+        let map_len: u32 = 46 + u32::from(commit_record_present);
         rmp::encode::write_map_len(wr, map_len)?;
 
         // MinIO field order (same as Go struct)
@@ -847,8 +855,10 @@ impl BucketMetadata {
         write_msgp_time(wr, self.durability_config_updated_at)?;
         rmp::encode::write_str(wr, "OnDemandMigrationConfigUpdatedAt")?;
         write_msgp_time(wr, self.on_demand_migration_config_updated_at)?;
-        rmp::encode::write_str(wr, "BucketCreationCommitted")?;
-        rmp::encode::write_bool(wr, self.bucket_creation_committed)?;
+        if commit_record_present {
+            rmp::encode::write_str(wr, "BucketCreationCommitted")?;
+            rmp::encode::write_bool(wr, self.bucket_creation_committed)?;
+        }
 
         Ok(())
     }
@@ -1691,6 +1701,13 @@ mod test {
         let mut bm = BucketMetadata::unmarshal(&body[4..]).expect("unmarshal recovered blob");
         assert_eq!(bm.name, "interop");
         assert!(!bm.bucket_creation_committed, "legacy metadata must default to uncommitted");
+        assert!(!bm.bucket_creation_commit_record_present, "legacy metadata has no creation-commit record");
+        let rewritten = BucketMetadata::unmarshal(&bm.marshal_msg().expect("rewrite legacy metadata"))
+            .expect("read rewritten legacy metadata");
+        assert!(
+            !rewritten.bucket_creation_commit_record_present,
+            "rewriting legacy metadata must not fabricate a creation intent"
+        );
         bm.parse_all_configs().expect("parse recovered configs");
         assert!(bm.lifecycle_config.is_some());
     }
@@ -1708,6 +1725,7 @@ mod test {
 
         assert_eq!(bm.name, new.name);
         assert!(new.bucket_creation_committed);
+        assert!(new.bucket_creation_commit_record_present);
         assert!(!bm.bucket_incarnation_id.is_nil());
         assert_eq!(bm.bucket_incarnation_id, new.bucket_incarnation_id);
     }

crates/ecstore/src/bucket/metadata_sys.rs

@@ -314,6 +314,33 @@ pub async fn remove_bucket_metadata(bucket: &str) -> Result<bool> {
     Ok(lock.remove(bucket).await)
 }
 
+/// Remove a peer's cached metadata only when the bucket is absent under the
+/// namespace read fence. A delayed delete notification must not withdraw the
+/// metadata of a same-name bucket that has already been recreated.
+pub async fn remove_bucket_metadata_if_absent(api: Arc<ECStore>, bucket: &str) -> Result<bool> {
+    if is_meta_bucketname(bucket) {
+        return Ok(false);
+    }
+    // Lock order: bucket namespace read -> metadata system read (released)
+    // -> metadata publish, matching peer reloads.
+    let namespace_lock = api.new_ns_lock(bucket, bucket).await?;
+    let namespace_guard = namespace_lock
+        .get_read_lock(crate::set_disk::get_lock_acquire_timeout())
+        .await?;
+    let sys = bucket_metadata_sys_of(&api.ctx)?;
+    let sys = sys.read().await.clone();
+    if sys
+        .bucket_exists(bucket, &namespace_guard, "peer bucket metadata removal existence check")
+        .await?
+    {
+        return Ok(false);
+    }
+    await_bucket_namespace_operation(Some(&namespace_guard), bucket, "peer bucket metadata removal", async {
+        Ok(sys.remove(bucket).await)
+    })
+    .await
+}
+
 fn start_refresh_buckets_metadata_loop(sys: Arc<RwLock<BucketMetadataSys>>) {
     let Some(cancel_token) = runtime_sources::background_services_cancel_token() else {
         warn!("bucket metadata refresh loop skipped because background cancellation token is not initialized");
@@ -1573,9 +1600,27 @@ struct MetadataPublishGuard {
     _guard: tokio::sync::OwnedMutexGuard<MetadataPublishLockState>,
 }
 
+#[derive(Debug, Clone)]
+pub(crate) struct PendingBucketCreationProof {
+    pub(crate) generation: Uuid,
+    pub(crate) intent: Vec<u8>,
+    pub(crate) versioning_requested: bool,
+    pub(crate) witnesses: Vec<crate::disk::os::NativeBucketCreationWitness>,
+}
+
+impl PendingBucketCreationProof {
+    pub(crate) fn matches_metadata(&self, metadata: &BucketMetadata) -> Result<bool> {
+        Ok(!metadata.bucket_creation_committed
+            && metadata.bucket_incarnation_sidecar
+            && metadata.bucket_incarnation_id == self.generation
+            && metadata.marshal_msg()? == self.intent)
+    }
+}
+
 #[derive(Debug, Clone)]
 pub struct BucketMetadataSys {
     metadata_map: Arc<RwLock<HashMap<String, Arc<BucketMetadata>>>>,
+    pending_bucket_creations: Arc<RwLock<HashMap<String, PendingBucketCreationProof>>>,
     /// Serializes metadata-map commits and their derived cache updates for one
     /// bucket. Namespace locks, when present, are acquired before this lock.
     metadata_publish_locks: Arc<MetadataPublishLockRegistry>,
@@ -1619,6 +1664,7 @@ impl BucketMetadataSys {
     pub fn new(api: Arc<ECStore>) -> Self {
         Self {
             metadata_map: Arc::new(RwLock::new(HashMap::new())),
+            pending_bucket_creations: Arc::new(RwLock::new(HashMap::new())),
             metadata_publish_locks: Arc::new(MetadataPublishLockRegistry {
                 locks: StdMutex::new(HashMap::new()),
             }),
@@ -1649,6 +1695,81 @@ impl BucketMetadataSys {
             .expect("bucket metadata object store should still be live")
     }
 
+    pub(crate) async fn pending_bucket_creation(&self, bucket: &str) -> Option<PendingBucketCreationProof> {
+        self.pending_bucket_creations.read().await.get(bucket).cloned()
+    }
+
+    pub(crate) async fn grant_pending_bucket_creation(&self, bucket: &str, proof: PendingBucketCreationProof) {
+        self.pending_bucket_creations.write().await.insert(bucket.to_owned(), proof);
+    }
+
+    pub(crate) async fn revoke_pending_bucket_creation(&self, bucket: &str) {
+        self.pending_bucket_creations.write().await.remove(bucket);
+    }
+
+    pub(crate) async fn consume_pending_bucket_creation(
+        &self,
+        bucket: &str,
+        metadata: &BucketMetadata,
+        witnesses: &[crate::disk::os::NativeBucketCreationWitness],
+    ) -> Result<bool> {
+        let mut pending = self.pending_bucket_creations.write().await;
+        let Some(proof) = pending.get(bucket) else {
+            return Ok(false);
+        };
+        if !proof.matches_metadata(metadata)?
+            || proof.witnesses.len() != witnesses.len()
+            || !proof
+                .witnesses
+                .iter()
+                .zip(witnesses)
+                .all(|(old, current)| old.matches(current))
+            || !crate::disk::os::consume_native_creation_witnesses(witnesses)
+        {
+            return Ok(false);
+        }
+        pending.remove(bucket);
+        Ok(true)
+    }
+
+    #[cfg(test)]
+    pub(crate) async fn refresh_bucket_for_test(&self, bucket: &str) -> Result<()> {
+        let expected = self.metadata_map.read().await.get(bucket).cloned();
+        let lock = self.object_store().new_ns_lock(bucket, bucket).await?;
+        let guard = lock.get_read_lock(crate::set_disk::get_lock_acquire_timeout()).await?;
+        self.load_bucket_under_namespace(bucket, MetadataLoadMode::Refresh, expected.as_ref(), &guard)
+            .await
+    }
+
+    #[cfg(test)]
+    pub(crate) async fn publish_persisted_metadata_for_test(&self, bucket: &str) -> Result<()> {
+        let expected = self.metadata_map.read().await.get(bucket).cloned();
+        let lock = self.object_store().new_ns_lock(bucket, bucket).await?;
+        let guard = lock.get_read_lock(crate::set_disk::get_lock_acquire_timeout()).await?;
+        let (metadata, persisted) = await_bucket_namespace_operation(
+            Some(&guard),
+            bucket,
+            "test cached metadata load",
+            load_bucket_metadata_parse_with_presence(self.object_store(), bucket, true),
+        )
+        .await?;
+        self.publish_if_unchanged(bucket, expected.as_ref(), metadata, persisted, &guard)
+            .await
+    }
+
+    #[cfg(test)]
+    pub(crate) async fn migrate_bucket_creation_commit_for_test(&self, bucket: &str) -> Result<()> {
+        self.migrate_bucket_creation_commit(bucket).await.map(|_| ())
+    }
+
+    #[cfg(test)]
+    pub(crate) async fn legacy_migration_reports_missing_bucket_for_test(&self, bucket: &str) -> Result<bool> {
+        Ok(matches!(
+            self.migrate_legacy_metadata(bucket).await?,
+            BucketMetadataAuthority::MissingBucket
+        ))
+    }
+
     fn object_store_if_live(&self) -> Option<Arc<ECStore>> {
         self.api.upgrade()
     }
@@ -1839,6 +1960,7 @@ impl BucketMetadataSys {
         expected: Option<&Arc<BucketMetadata>>,
         namespace_guard: &rustfs_lock::NamespaceLockGuard,
     ) -> Result<()> {
+        self.revoke_pending_bucket_creation(bucket).await;
         if !await_bucket_namespace_operation(
             Some(namespace_guard),
             bucket,
@@ -1922,6 +2044,7 @@ impl BucketMetadataSys {
         persisted: bool,
         namespace_guard: &rustfs_lock::NamespaceLockGuard,
     ) -> Result<()> {
+        self.revoke_pending_bucket_creation(bucket).await;
         if !persisted {
             let _publish_guard = self
                 .lock_metadata_publish(bucket, namespace_guard, "refreshed bucket metadata absence publish")
@@ -1983,6 +2106,7 @@ impl BucketMetadataSys {
     }
 
     pub async fn set(&self, bucket: String, bm: Arc<BucketMetadata>) {
+        self.revoke_pending_bucket_creation(&bucket).await;
         if !is_meta_bucketname(&bucket) {
             let publish_lock = self.metadata_publish_lock(&bucket);
             let _publish_guard = publish_lock.lock().await;
@@ -2004,6 +2128,7 @@ impl BucketMetadataSys {
         if is_meta_bucketname(bucket) {
             return false;
         }
+        self.revoke_pending_bucket_creation(bucket).await;
         let publish_lock = self.metadata_publish_lock(bucket);
         let _publish_guard = publish_lock.lock().await;
         let mut map = self.metadata_map.write().await;
@@ -2021,6 +2146,7 @@ impl BucketMetadataSys {
     }
 
     async fn _reset(&mut self) {
+        self.pending_bucket_creations.write().await.clear();
         let mut map = self.metadata_map.write().await;
         map.clear();
         drop(map);
@@ -2159,6 +2285,7 @@ impl BucketMetadataSys {
     /// server's metadata never leaks into the ambient (first) instance.
     pub(crate) async fn persist_and_set(&self, bm: BucketMetadata) -> Result<()> {
         let mut bm = bm;
+        self.revoke_pending_bucket_creation(&bm.name).await;
         bm.save_with_store(self.object_store()).await?;
 
         self.set(bm.name.clone(), Arc::new(bm)).await;
@@ -2167,6 +2294,7 @@ impl BucketMetadataSys {
     }
 
     async fn persist_new_and_set(&self, mut bm: BucketMetadata) -> Result<()> {
+        self.revoke_pending_bucket_creation(&bm.name).await;
         bm.bucket_creation_committed = true;
         bm.save_with_store_committed(self.object_store()).await?;
         save_bucket_incarnation(self.object_store(), &bm.name, bm.bucket_incarnation_id).await?;
@@ -2176,7 +2304,9 @@ impl BucketMetadataSys {
     }
 
     async fn persist_new_bucket_metadata_intent(&self, mut bm: BucketMetadata) -> Result<()> {
+        self.revoke_pending_bucket_creation(&bm.name).await;
         bm.bucket_creation_committed = false;
+        bm.bucket_creation_commit_record_present = true;
         bm.save_with_store(self.object_store()).await?;
         save_bucket_incarnation(self.object_store(), &bm.name, bm.bucket_incarnation_id).await?;
         bm.bucket_incarnation_sidecar = true;
@@ -2186,6 +2316,7 @@ impl BucketMetadataSys {
     }
 
     async fn commit_bucket_metadata(&self, mut bm: BucketMetadata) -> Result<()> {
+        self.revoke_pending_bucket_creation(&bm.name).await;
         bm.parse_all_configs()?;
         bm.bucket_incarnation_sidecar = true;
         // The caller holds the full bucket creation fence (lifecycle, metadata
@@ -2234,6 +2365,7 @@ impl BucketMetadataSys {
         bucket: &str,
         namespace_guard: &rustfs_lock::NamespaceLockGuard,
     ) -> Result<()> {
+        self.revoke_pending_bucket_creation(bucket).await;
         let expected = self.metadata_map.read().await.get(bucket).cloned();
         if !self
             .bucket_exists(bucket, namespace_guard, "peer bucket metadata existence check")
@@ -2290,6 +2422,7 @@ impl BucketMetadataSys {
             #[cfg(test)]
             self.lazy_disk_loads.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
 
+            self.revoke_pending_bucket_creation(bucket).await;
             let lock = self.object_store().new_ns_lock(bucket, bucket).await?;
             let guard = lock.get_read_lock(crate::set_disk::get_lock_acquire_timeout()).await?;
             #[cfg(test)]
@@ -2598,6 +2731,7 @@ impl BucketMetadataSys {
     /// revalidated at write quorum, so a stale snapshot can neither revert an
     /// acknowledged configuration update nor outlive a delete/recreate.
     async fn migrate_bucket_creation_commit(&self, bucket: &str) -> Result<BucketMetadataAuthority> {
+        self.revoke_pending_bucket_creation(bucket).await;
         let transaction_lock = self
             .object_store()
             .new_ns_lock(RUSTFS_META_BUCKET, &bucket_metadata_transaction_lock_key(bucket))
@@ -2675,6 +2809,7 @@ impl BucketMetadataSys {
         &self,
         bucket: &str,
     ) -> Result<BucketMetadataAuthority> {
+        self.revoke_pending_bucket_creation(bucket).await;
         #[cfg(test)]
         if self.object_lock_disk_read_errors.write().await.remove(bucket) {
             return Err(Error::other(format!("injected Object Lock metadata disk read failure: {bucket}")));
@@ -3046,6 +3181,7 @@ mod tests {
     };
     use crate::bucket::target::{BucketTarget, BucketTargetType, Credentials};
     use crate::config::com::read_config;
+    use crate::disk::{DiskAPI as _, RUSTFS_META_TMP_BUCKET};
     use crate::storage_api_contracts::bucket::{BucketOperations as _, DeleteBucketOptions, MakeBucketOptions};
     use byteorder::{ByteOrder as _, LittleEndian};
     use serial_test::serial;
@@ -3100,6 +3236,180 @@ mod tests {
         ),
     ];
 
+    #[tokio::test]
+    #[serial(storage_class_env)]
+    async fn persistence_entry_failures_revoke_pending_creation_before_cache_publish() {
+        let (dirs, store) = isolated_store_over_temp_disks().await;
+        init_bucket_metadata_sys(store.clone(), Vec::new()).await;
+        let sys = bucket_metadata_sys_of(&store.ctx).expect("instance metadata system");
+        let sys = sys.read().await.clone();
+        let options = MakeBucketOptions {
+            lock_enabled: true,
+            ..Default::default()
+        };
+        for entry in ["save", "persist", "persist-new", "commit"] {
+            let bucket = format!("revoke-{entry}-{}", Uuid::new_v4());
+            store.fail_next_bucket_creation_after_intent_for_test(&bucket);
+            store
+                .make_bucket(&bucket, &options)
+                .await
+                .expect_err("stop the real producer before physical publication");
+            sys.pending_bucket_creation(&bucket)
+                .await
+                .expect("the producer must leave a real live creation permission");
+            let (intent, persisted) = get_config_from_disk_with_presence_in(&store.ctx, &bucket)
+                .await
+                .expect("read the original producer intent");
+            assert!(persisted, "{entry}: the complete original intent must be persisted");
+            let original_intent = intent.marshal_msg().expect("encode the original intent");
+
+            // Keep the creation fence order used by the real producer.
+            let lifecycle_guard = store
+                .acquire_bucket_lifecycle_write_lock(&bucket)
+                .await
+                .expect("hold the bucket lifecycle fence");
+            let transaction_guard = acquire_bucket_metadata_transaction_lock_in(&store.ctx, &bucket)
+                .await
+                .expect("hold the metadata transaction fence");
+            let namespace_lock = store
+                .new_ns_lock(&bucket, &bucket)
+                .await
+                .expect("create the exact bucket namespace lock");
+            let namespace_guard = namespace_lock
+                .get_write_lock(crate::set_disk::get_lock_acquire_timeout())
+                .await
+                .expect("hold the exact bucket namespace fence");
+
+            // A file at each native staging root causes actual IO to fail before
+            // metadata can reach the cache-publishing set call. Preserve the
+            // original staging directories so no fixture data is discarded.
+            for dir in &dirs {
+                let staging = dir.path().join(RUSTFS_META_TMP_BUCKET);
+                let saved = dir.path().join(".rustfs.sys/revocation-saved-tmp");
+                std::fs::rename(&staging, &saved).expect("preserve the native staging directory");
+                std::fs::write(&staging, b"block metadata staging with a non-directory")
+                    .expect("install an actual non-directory IO obstruction");
+            }
+            let result = match entry {
+                "save" => sys.save(intent).await,
+                "persist" => sys.persist_and_set(intent).await,
+                "persist-new" => sys.persist_new_and_set(intent).await,
+                "commit" => sys.commit_bucket_metadata(intent).await,
+                _ => unreachable!(),
+            };
+            for dir in &dirs {
+                let staging = dir.path().join(RUSTFS_META_TMP_BUCKET);
+                let saved = dir.path().join(".rustfs.sys/revocation-saved-tmp");
+                std::fs::remove_file(&staging).expect("remove only the fixture's staging obstruction");
+                std::fs::rename(&saved, &staging).expect("restore the complete original staging directory");
+            }
+            drop((namespace_guard, transaction_guard, lifecycle_guard));
+            result.expect_err("native persistence must fail before its downstream cache set");
+            assert!(
+                sys.pending_bucket_creation(&bucket).await.is_none(),
+                "{entry}: the entry revoker must retire live permission even when persistence fails"
+            );
+            let (after_failure, present) = get_config_from_disk_with_presence_in(&store.ctx, &bucket)
+                .await
+                .expect("read the intent after the failed persistence entry");
+            assert!(present, "{entry}: a failed persistence entry must retain the original metadata");
+            assert_eq!(
+                after_failure
+                    .marshal_msg()
+                    .expect("encode the original intent after persistence failure"),
+                original_intent,
+                "{entry}: native IO failure must not change the original generation or complete intent"
+            );
+            let error = store
+                .make_bucket(&bucket, &options)
+                .await
+                .expect_err("a failed ordinary persistence entry cannot preserve creation permission");
+            assert!(error.to_string().contains("administrator recovery"), "{entry}: {error}");
+            let (after_retry, _) = get_config_from_disk_with_presence_in(&store.ctx, &bucket)
+                .await
+                .expect("read the original intent after the rejected retry");
+            assert_eq!(
+                after_retry.marshal_msg().expect("encode the intent after the rejected retry"),
+                original_intent,
+                "{entry}: the rejected retry must preserve the complete original intent"
+            );
+            for disk in store.pools[0].disk_set[0].disks.read().await.iter() {
+                assert!(
+                    matches!(
+                        disk.as_ref().expect("native disk").stat_volume(&bucket).await,
+                        Err(crate::disk::error::DiskError::VolumeNotFound)
+                    ),
+                    "{entry}: failed persistence and the rejected retry must not publish a physical volume"
+                );
+            }
+        }
+    }
+
+    #[tokio::test]
+    #[serial(storage_class_env)]
+    async fn metadata_reset_revokes_real_pending_creation_without_changing_persisted_intent() {
+        let (_dirs, store) = isolated_store_over_temp_disks().await;
+        init_bucket_metadata_sys(store.clone(), Vec::new()).await;
+        let bucket = format!("revoke-reset-{}", Uuid::new_v4());
+        let options = MakeBucketOptions {
+            lock_enabled: true,
+            ..Default::default()
+        };
+        store.fail_next_bucket_creation_after_intent_for_test(&bucket);
+        store
+            .make_bucket(&bucket, &options)
+            .await
+            .expect_err("stop the real producer before physical publication");
+        let sys = bucket_metadata_sys_of(&store.ctx).expect("instance metadata system");
+        let mut sys = sys.read().await.clone();
+        sys.pending_bucket_creation(&bucket)
+            .await
+            .expect("the real producer must leave live creation permission before reset");
+        let (intent, persisted) = get_config_from_disk_with_presence_in(&store.ctx, &bucket)
+            .await
+            .expect("read the original intent before cache reset");
+        assert!(persisted, "cache reset starts from a complete real persisted intent");
+        let original_intent = intent.marshal_msg().expect("encode the original reset intent");
+        sys._reset().await;
+        assert!(
+            sys.pending_bucket_creation(&bucket).await.is_none(),
+            "reset must revoke the producer-issued permission shared with the instance metadata system"
+        );
+        let (after_reset, present) = get_config_from_disk_with_presence_in(&store.ctx, &bucket)
+            .await
+            .expect("read the original intent after cache reset");
+        assert!(present, "cache reset must retain the persisted intent");
+        assert_eq!(
+            after_reset.marshal_msg().expect("encode the intent after cache reset"),
+            original_intent,
+            "cache reset must leave the original generation and complete persisted intent unchanged"
+        );
+        let error = store
+            .make_bucket(&bucket, &options)
+            .await
+            .expect_err("reset cannot regrant the producer's old creation permission");
+        assert!(error.to_string().contains("administrator recovery"), "{error}");
+        let (after_retry, _) = get_config_from_disk_with_presence_in(&store.ctx, &bucket)
+            .await
+            .expect("read the intent after the reset-induced retry rejection");
+        assert_eq!(
+            after_retry
+                .marshal_msg()
+                .expect("encode the intent after the rejected reset retry"),
+            original_intent,
+            "the reset-induced rejection must preserve the original complete intent"
+        );
+        for disk in store.pools[0].disk_set[0].disks.read().await.iter() {
+            assert!(
+                matches!(
+                    disk.as_ref().expect("native disk").stat_volume(&bucket).await,
+                    Err(crate::disk::error::DiskError::VolumeNotFound)
+                ),
+                "cache reset and the rejected retry must not publish a physical volume"
+            );
+        }
+    }
+
     #[tokio::test]
     async fn g_d3_003_new_writer_replication_loads_without_fail_closed_state() {
         let (dirs, store) = isolated_store_over_temp_disks().await;
@@ -4856,6 +5166,117 @@ mod tests {
         );
     }
 
+    #[tokio::test]
+    #[serial]
+    async fn peer_reload_clears_negative_cache_after_remote_bucket_creation() {
+        let (dirs, node_a, node_b) = two_nodes_over_one_store().await;
+        let bucket = "cross-node-negative-cache-refresh";
+        let node_b_sys = node_b.read().await.clone();
+
+        assert_eq!(
+            node_b_sys.get_bucket_incarnation_id(bucket).await.unwrap_err(),
+            Error::BucketNotFound(bucket.to_string()),
+            "the probe must populate node B's missing-bucket cache"
+        );
+
+        for dir in &dirs {
+            std::fs::create_dir_all(dir.path().join(bucket)).expect("physical bucket should exist before creation metadata");
+        }
+        let created = BucketMetadata::new(bucket);
+        let created_incarnation = created.bucket_incarnation_id;
+        node_a
+            .read()
+            .await
+            .persist_new_and_set(created)
+            .await
+            .expect("node A should publish the created bucket metadata");
+
+        node_b_sys
+            .reload_from_store(bucket)
+            .await
+            .expect("peer reload should clear the stale negative cache");
+        assert_eq!(
+            node_b_sys.get_bucket_incarnation_id(bucket).await.unwrap(),
+            created_incarnation,
+            "node B should resolve the newly created bucket immediately"
+        );
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+    #[serial]
+    async fn peer_delete_clears_metadata_for_absent_bucket() {
+        let (_dirs, store) = isolated_store_over_temp_disks().await;
+        init_bucket_metadata_sys(store.clone(), Vec::new()).await;
+        let sys = bucket_metadata_sys_of(&store.ctx).expect("metadata owner");
+        let bucket = "peer-delete-absent-bucket";
+
+        store
+            .make_bucket(bucket, &MakeBucketOptions::default())
+            .await
+            .expect("initial bucket creation");
+        let cached = sys.read().await.get(bucket).await.expect("initial cached metadata");
+        store
+            .delete_bucket(bucket, &DeleteBucketOptions::default())
+            .await
+            .expect("bucket deletion");
+
+        // Model a peer that still caches the metadata after the physical delete.
+        sys.read().await.set(bucket.to_string(), cached).await;
+        assert!(
+            remove_bucket_metadata_if_absent(store.clone(), bucket)
+                .await
+                .expect("conditional peer delete"),
+            "the peer must evict the deleted bucket's cached metadata"
+        );
+        let sys = sys.read().await;
+        assert!(matches!(sys.get(bucket).await, Err(Error::ConfigNotFound)));
+        assert_eq!(
+            sys.get_bucket_incarnation_id(bucket)
+                .await
+                .expect_err("deleted bucket lookup"),
+            Error::BucketNotFound(bucket.to_string()),
+        );
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+    #[serial]
+    async fn delayed_peer_delete_preserves_recreated_bucket_metadata() {
+        let (_dirs, store) = isolated_store_over_temp_disks().await;
+        init_bucket_metadata_sys(store.clone(), Vec::new()).await;
+        let sys = bucket_metadata_sys_of(&store.ctx).expect("metadata owner");
+        let bucket = "delayed-peer-delete-recreated-bucket";
+
+        store
+            .make_bucket(bucket, &MakeBucketOptions::default())
+            .await
+            .expect("initial bucket creation");
+        let old_incarnation = store.bucket_incarnation_id_from_disk(bucket).await.expect("old incarnation");
+        store
+            .delete_bucket(bucket, &DeleteBucketOptions::default())
+            .await
+            .expect("bucket deletion");
+        store
+            .make_bucket(bucket, &MakeBucketOptions::default())
+            .await
+            .expect("bucket recreation");
+        let new_incarnation = store.bucket_incarnation_id_from_disk(bucket).await.expect("new incarnation");
+        assert_ne!(old_incarnation, new_incarnation);
+
+        let removed = remove_bucket_metadata_if_absent(store.clone(), bucket)
+            .await
+            .expect("conditional peer delete");
+        assert!(!removed, "a delayed delete must not remove metadata for a live recreated bucket");
+        assert_eq!(
+            sys.read()
+                .await
+                .get(bucket)
+                .await
+                .expect("recreated metadata should remain cached")
+                .bucket_incarnation_id,
+            new_incarnation,
+        );
+    }
+
     #[tokio::test(flavor = "multi_thread", worker_threads = 4)]
     #[serial]
     async fn stale_config_request_cannot_mutate_a_recreated_bucket() {

crates/ecstore/src/bucket/migration.rs

@@ -273,6 +273,30 @@ where
 
     let buckets: Vec<String> = buckets_list.into_iter().map(|b| b.name).collect();
 
+    try_migrate_bucket_metadata_for_buckets(store, &buckets).await
+}
+
+/// Migrate the already discovered startup candidates without repeating a
+/// majority-only namespace listing. Every migration write retains its quorum.
+pub async fn try_migrate_bucket_metadata_for_buckets<S>(store: Arc<S>, buckets: &[String]) -> Result<()>
+where
+    S: ObjectIO<
+            Error = Error,
+            RangeSpec = HTTPRangeSpec,
+            HeaderMap = HeaderMap,
+            ObjectOptions = ObjectOptions,
+            ObjectInfo = ObjectInfo,
+            GetObjectReader = GetObjectReader,
+            PutObjectReader = PutObjReader,
+        > + ObjectOperations<
+            Error = Error,
+            ObjectInfo = ObjectInfo,
+            ObjectOptions = ObjectOptions,
+            FileInfo = FileInfo,
+            ObjectToDelete = ObjectToDelete,
+            DeletedObject = DeletedObject,
+        >,
+{
     if buckets.is_empty() {
         debug!("No migrating bucket metadata found");
         return Ok(());

crates/ecstore/src/cluster/rpc/client.rs

@@ -24,10 +24,11 @@ use crate::cluster::rpc::{gen_tonic_replay_scope_headers, gen_tonic_signature_he
 #[cfg(test)]
 use crate::cluster::rpc::{tonic_boot_epoch_challenge, tonic_boot_epoch_response_headers};
 use crate::disk::error::{DiskError, Error as DiskErrorType, RpcStatusError};
+#[cfg(test)]
 use crate::runtime::sources as runtime_sources;
 use http::{Request as HttpRequest, Response as HttpResponse, Uri};
 use rustfs_protos::{
-    ChannelClass, create_new_channel, get_channel_for_class,
+    ChannelClass, get_channel_for_class,
     proto_gen::node_service::{
         heal_control_service_client::HealControlServiceClient, node_service_client::NodeServiceClient,
         scanner_control_service_client::ScannerControlServiceClient,
@@ -53,7 +54,7 @@ use super::context_propagation::{inject_request_id_into_metadata, inject_trace_c
 /// 3. Subsequent calls will attempt fresh connections
 /// 4. If node is still down, connection will fail fast (3s timeout)
 pub async fn node_service_time_out_client(
-    addr: &String,
+    addr: &str,
     interceptor: TonicInterceptor,
 ) -> Result<NodeServiceClient<InterceptedService<AuthenticatedChannel, TonicInterceptor>>, Box<dyn Error>> {
     // Default to the latency-sensitive control channel; bulk `bytes` RPCs opt in via the
@@ -66,12 +67,9 @@ pub(crate) async fn scanner_control_time_out_client(
     interceptor: TonicInterceptor,
 ) -> crate::error::Result<ScannerControlServiceClient<InterceptedService<AuthenticatedChannel, TonicInterceptor>>> {
     let interceptor = interceptor.with_rpc_audience(addr)?;
-    let channel = match runtime_sources::cached_node_channel(addr).await {
-        Some(channel) => channel,
-        None => create_new_channel(addr)
-            .await
-            .map_err(|err| crate::error::Error::other(err.to_string()))?,
-    };
+    let channel = get_channel_for_class(addr, ChannelClass::Control)
+        .await
+        .map_err(|err| crate::error::Error::other(err.to_string()))?;
     let channel = ReplayScopeChannel::new(channel, interceptor.replay_scope_audience());
     let limit = rustfs_protos::scoped_dirty_usage::SCOPED_DIRTY_USAGE_MAX_REQUEST_BYTES as usize;
     Ok(ScannerControlServiceClient::with_interceptor(channel, interceptor)
@@ -84,10 +82,7 @@ pub async fn heal_control_time_out_client(
     interceptor: TonicInterceptor,
 ) -> Result<HealControlServiceClient<InterceptedService<AuthenticatedChannel, TonicInterceptor>>, Box<dyn Error>> {
     let interceptor = interceptor.with_rpc_audience(addr)?;
-    let channel = match runtime_sources::cached_node_channel(addr).await {
-        Some(channel) => channel,
-        None => create_new_channel(addr).await?,
-    };
+    let channel = get_channel_for_class(addr, ChannelClass::Control).await?;
     let max_message_size = rustfs_protos::HEAL_CONTROL_RPC_MAX_MESSAGE_SIZE;
     let channel = ReplayScopeChannel::new(channel, interceptor.replay_scope_audience());
     Ok(HealControlServiceClient::with_interceptor(channel, interceptor)
@@ -100,10 +95,7 @@ pub async fn tier_mutation_control_time_out_client(
     interceptor: TonicInterceptor,
 ) -> Result<TierMutationControlServiceClient<InterceptedService<AuthenticatedChannel, TonicInterceptor>>, Box<dyn Error>> {
     let interceptor = interceptor.with_rpc_audience(addr)?;
-    let channel = match runtime_sources::cached_node_channel(addr).await {
-        Some(channel) => channel,
-        None => create_new_channel(addr).await?,
-    };
+    let channel = get_channel_for_class(addr, ChannelClass::Control).await?;
     let max_message_size = rustfs_protos::TIER_MUTATION_RPC_MAX_MESSAGE_SIZE;
     let channel = ReplayScopeChannel::new(channel, interceptor.replay_scope_audience());
     Ok(TierMutationControlServiceClient::with_interceptor(channel, interceptor)
@@ -118,22 +110,12 @@ pub async fn tier_mutation_control_time_out_client(
 /// 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.
 pub async fn node_service_time_out_client_for_class(
-    addr: &String,
+    addr: &str,
     interceptor: TonicInterceptor,
     class: ChannelClass,
 ) -> Result<NodeServiceClient<InterceptedService<AuthenticatedChannel, TonicInterceptor>>, Box<dyn Error>> {
     let interceptor = interceptor.with_rpc_audience(addr)?;
-    let channel = match class {
-        ChannelClass::Control => match runtime_sources::cached_node_channel(addr).await {
-            Some(channel) => {
-                debug!("Using cached gRPC channel for: {}", addr);
-                channel
-            }
-            // No cached connection, create new one.
-            None => create_new_channel(addr).await?,
-        },
-        ChannelClass::Bulk => get_channel_for_class(addr, ChannelClass::Bulk).await?,
-    };
+    let channel = get_channel_for_class(addr, class).await?;
 
     let max_message_size = rustfs_protos::internode_rpc_max_message_size();
     let channel = ReplayScopeChannel::new(channel, interceptor.replay_scope_audience());
@@ -142,8 +124,24 @@ pub async fn node_service_time_out_client_for_class(
         .max_encoding_message_size(max_message_size))
 }
 
+pub(crate) async fn node_service_delete_recovery_client(
+    addr: &str,
+    interceptor: TonicInterceptor,
+    timeout: std::time::Duration,
+) -> Result<NodeServiceClient<InterceptedService<AuthenticatedChannel, TonicInterceptor>>, DiskError> {
+    let interceptor = interceptor.with_rpc_audience(addr).map_err(DiskError::from)?;
+    let channel = rustfs_protos::create_channel_with_timeout(addr, timeout)
+        .await
+        .map_err(|error| DiskError::RemoteClientUnavailable(error.to_string()))?;
+    let channel = ReplayScopeChannel::new(channel, interceptor.replay_scope_audience());
+    let max_message_size = rustfs_protos::internode_rpc_max_message_size();
+    Ok(NodeServiceClient::with_interceptor(channel, interceptor)
+        .max_decoding_message_size(max_message_size)
+        .max_encoding_message_size(max_message_size))
+}
+
 pub async fn node_service_time_out_client_no_auth(
-    addr: &String,
+    addr: &str,
 ) -> Result<NodeServiceClient<InterceptedService<AuthenticatedChannel, TonicInterceptor>>, Box<dyn Error>> {
     node_service_time_out_client(addr, TonicInterceptor::NoOp(NoOpInterceptor)).await
 }
@@ -546,6 +544,126 @@ mod tests {
     use tracing_opentelemetry::OpenTelemetrySpanExt;
     use tracing_subscriber::{Registry, layer::SubscriberExt};
 
+    #[tokio::test]
+    async fn delete_recovery_channel_uses_its_scoped_deadline() {
+        use bytes::Bytes;
+        use http_body_util::StreamBody;
+        use hyper::{body::Frame, service::service_fn};
+        use hyper_util::rt::{TokioExecutor, TokioIo};
+        use rustfs_protos::proto_gen::node_service::{RecoverDeleteTransactionRequest, RecoverDeleteTransactionResponse};
+        use tonic_prost::prost::Message;
+        let listener = tokio::net::TcpListener::bind("127.0.0.1:0")
+            .await
+            .expect("bind recovery peer");
+        let addr = format!("http://{}", listener.local_addr().expect("peer address"));
+        let server = tokio::spawn(async move {
+            loop {
+                let (stream, _) = listener.accept().await.expect("accept recovery connection");
+                tokio::spawn(async move {
+                    let service = service_fn(|_request: HttpRequest<hyper::body::Incoming>| async {
+                        tokio::time::sleep(std::time::Duration::from_millis(500)).await;
+                        let payload = RecoverDeleteTransactionResponse {
+                            success: true,
+                            protocol_version: 1,
+                            result: Bytes::new(),
+                            error: None,
+                        }
+                        .encode_to_vec();
+                        let mut data = vec![0];
+                        data.extend_from_slice(&u32::try_from(payload.len()).expect("small response").to_be_bytes());
+                        data.extend_from_slice(&payload);
+                        let mut trailers = http::HeaderMap::new();
+                        trailers.insert("grpc-status", "0".parse().expect("status"));
+                        let frames: Vec<Result<Frame<Bytes>, std::convert::Infallible>> =
+                            vec![Ok(Frame::data(data.into())), Ok(Frame::trailers(trailers))];
+                        let mut response = HttpResponse::new(StreamBody::new(futures::stream::iter(frames)));
+                        response
+                            .headers_mut()
+                            .insert("content-type", "application/grpc".parse().expect("content type"));
+                        Ok::<_, std::convert::Infallible>(response)
+                    });
+                    let _ = hyper::server::conn::http2::Builder::new(TokioExecutor::new())
+                        .serve_connection(TokioIo::new(stream), service)
+                        .await;
+                });
+            }
+        });
+        let request = || RecoverDeleteTransactionRequest {
+            disk: "disk".into(),
+            volume: "bucket".into(),
+            protocol_version: 1,
+            operation: Bytes::new(),
+        };
+        // Seed an existing short-lived control channel to reproduce the inherited deadline.
+        let control = tonic::transport::Endpoint::from_shared(addr.clone())
+            .expect("test endpoint")
+            .timeout(std::time::Duration::from_millis(50))
+            .connect()
+            .await
+            .expect("control connect");
+        rustfs_common::cache_connection(addr.clone(), control).await;
+        let mut foreground = node_service_time_out_client(&addr, TonicInterceptor::NoOp(NoOpInterceptor))
+            .await
+            .expect("control client");
+        let error = foreground
+            .recover_delete_transaction(request())
+            .await
+            .expect_err("short control deadline");
+        assert!(matches!(error.code(), tonic::Code::Cancelled | tonic::Code::DeadlineExceeded));
+        // The 2-second test override bypasses the production range parser, which rejects 2.
+        let mut recovery = node_service_delete_recovery_client(
+            &addr,
+            TonicInterceptor::NoOp(NoOpInterceptor),
+            std::time::Duration::from_secs(2),
+        )
+        .await
+        .expect("scoped recovery client");
+        assert!(
+            recovery
+                .recover_delete_transaction(request())
+                .await
+                .expect("scoped deadline must survive control deadline")
+                .into_inner()
+                .success
+        );
+        server.abort();
+        rustfs_protos::evict_failed_connection(&addr).await;
+    }
+
+    #[tokio::test]
+    async fn rpc_client_factories_do_not_reuse_https_channels_without_tls_generation() {
+        let listener = std::net::TcpListener::bind("127.0.0.1:0").expect("reserve local address");
+        let addr = format!("https://{}", listener.local_addr().expect("local address"));
+        drop(listener);
+        for factory in 0..4 {
+            let placeholder = tonic::transport::Endpoint::from_static("http://127.0.0.1:1").connect_lazy();
+            runtime_sources::cache_test_node_channel(addr.clone(), placeholder).await;
+            let interceptor = TonicInterceptor::NoOp(NoOpInterceptor);
+            let _result = match factory {
+                0 => scanner_control_time_out_client(&addr, interceptor)
+                    .await
+                    .map(|_| ())
+                    .map_err(|e| e.to_string()),
+                1 => heal_control_time_out_client(&addr, interceptor)
+                    .await
+                    .map(|_| ())
+                    .map_err(|e| e.to_string()),
+                2 => tier_mutation_control_time_out_client(&addr, interceptor)
+                    .await
+                    .map(|_| ())
+                    .map_err(|e| e.to_string()),
+                _ => node_service_time_out_client(&addr, interceptor)
+                    .await
+                    .map(|_| ())
+                    .map_err(|e| e.to_string()),
+            };
+            assert!(
+                !runtime_sources::test_node_channel_is_cached(&addr).await,
+                "factory {factory} must evict an unbound HTTPS cache entry before attempting a fresh dial"
+            );
+        }
+    }
+
     #[derive(Clone)]
     struct EpochProofService {
         audience: String,

crates/ecstore/src/cluster/rpc/network_probe.rs

@@ -289,13 +289,9 @@ async fn client(
     >,
     NetworkPeerProbeError,
 > {
-    node_service_time_out_client_for_class(
-        &address.to_owned(),
-        TonicInterceptor::Signature(gen_tonic_signature_interceptor()),
-        class,
-    )
-    .await
-    .map_err(|_| NetworkPeerProbeError::Unreachable)
+    node_service_time_out_client_for_class(address, TonicInterceptor::Signature(gen_tonic_signature_interceptor()), class)
+        .await
+        .map_err(|_| NetworkPeerProbeError::Unreachable)
 }
 
 fn ping_request(payload: &[u8]) -> PingRequest {

crates/ecstore/src/cluster/rpc/remote_disk.rs

@@ -14,7 +14,8 @@
 
 use crate::cluster::rpc::client::{
     AuthenticatedChannel, TonicInterceptor, gen_tonic_signature_interceptor, is_network_like_disk_error,
-    node_service_time_out_client, node_service_time_out_client_for_class, node_service_time_out_client_no_auth,
+    node_service_delete_recovery_client, node_service_time_out_client, node_service_time_out_client_for_class,
+    node_service_time_out_client_no_auth,
 };
 use crate::cluster::rpc::internode_data_transport::{
     InternodeDataTransport, NsScannerCapabilityRequest, NsScannerStreamRequest, ReadStreamRequest, WalkDirStreamRequest,
@@ -22,10 +23,11 @@ use crate::cluster::rpc::internode_data_transport::{
 };
 use crate::disk::error::{Error, Result};
 use crate::disk::{
-    BatchReadVersionReq, BatchReadVersionResp, CheckPartsResp, ConditionalFileUpdate, DeleteOptions, DiskAPI, DiskInfo,
-    DiskInfoOptions, DiskLocation, DiskOption, FileInfoVersions, FileReader, FileWriter, PartTransactionAction, ReadMultipleReq,
-    ReadMultipleResp, ReadOptions, RenameDataResp, SnapshotLeaseToken, UpdateMetadataOpts, VolumeInfo, WalkDirOptions,
-    batch_read_version_one_by_one,
+    BatchReadVersionReq, BatchReadVersionResp, CheckPartsResp, ConditionalFileUpdate, DELETE_RECOVERY_PROTOCOL_VERSION,
+    DeleteOptions, DeleteRecoveryAction, DeleteRecoveryCursor, DeleteRecoveryDigest, DeleteRecoveryInspection,
+    DeleteRecoveryPage, DeleteRecoveryRpcOperation, DeleteRecoveryRpcReply, DiskAPI, DiskInfo, DiskInfoOptions, DiskLocation,
+    DiskOption, FileInfoVersions, FileReader, FileWriter, PartTransactionAction, ReadMultipleReq, ReadMultipleResp, ReadOptions,
+    RenameDataResp, SnapshotLeaseToken, UpdateMetadataOpts, VolumeInfo, WalkDirOptions, batch_read_version_one_by_one,
     disk_store::{
         DEFAULT_RUSTFS_DRIVE_ACTIVE_MONITORING, ENV_RUSTFS_DRIVE_ACTIVE_MONITORING, SKIP_IF_SUCCESS_BEFORE,
         get_drive_active_check_interval, get_drive_active_check_timeout, get_drive_disk_info_timeout, get_drive_list_dir_timeout,
@@ -59,10 +61,10 @@ use rustfs_protos::proto_gen::node_service::{
     CompareAndUpdateFileRequest, DeletePathsRequest, DeleteRequest, DeleteVersionRequest, DeleteVersionsRequest,
     DeleteVersionsResponse, DeleteVolumeRequest, DiskInfoRequest, ListDirRequest, ListVolumesRequest, MakeVolumeRequest,
     MakeVolumesRequest, PreparePartTransactionRequest, ReadAllRequest, ReadMetadataRequest, ReadMultipleRequest,
-    ReadMultipleResponse, ReadPartsRequest, ReadVersionRequest, ReadXlRequest, RenameDataRequest, RenameFileRequest,
-    SettlePartTransactionRequest, SnapshotLeaseReleaseRequest, SnapshotLeaseRenewRequest, SnapshotLeaseRequest,
-    SnapshotLeaseResponse, StatVolumeRequest, UpdateMetadataRequest, VerifyFileRequest, WriteAllRequest, WriteMetadataRequest,
-    node_service_client::NodeServiceClient,
+    ReadMultipleResponse, ReadPartsRequest, ReadVersionRequest, ReadXlRequest, RecoverDeleteTransactionRequest,
+    RenameDataRequest, RenameFileRequest, SettlePartTransactionRequest, SnapshotLeaseReleaseRequest, SnapshotLeaseRenewRequest,
+    SnapshotLeaseRequest, SnapshotLeaseResponse, StatVolumeRequest, UpdateMetadataRequest, VerifyFileRequest, WriteAllRequest,
+    WriteMetadataRequest, node_service_client::NodeServiceClient,
 };
 use serde::{Serialize, de::DeserializeOwned};
 use std::{
@@ -142,6 +144,45 @@ fn decode_delete_versions_errors(response: DeleteVersionsResponse, expected_len:
         .collect()
 }
 
+fn decode_delete_recovery_batch_errors(codes: Vec<Option<u32>>, expected_len: usize) -> Result<Vec<Option<DiskError>>> {
+    if codes.len() != expected_len {
+        return Err(Error::other("malformed recoverable batch delete response length"));
+    }
+    codes
+        .into_iter()
+        .map(|code| match code {
+            None => Ok(None),
+            Some(code) => DiskError::from_u32(code)
+                .map(Some)
+                .ok_or_else(|| Error::other("invalid recoverable batch delete error code")),
+        })
+        .collect()
+}
+
+fn validate_delete_recovery_inspection(
+    volume: &str,
+    object: &str,
+    transaction: Uuid,
+    inspection: &DeleteRecoveryInspection,
+) -> Result<()> {
+    if inspection.protocol_version != DELETE_RECOVERY_PROTOCOL_VERSION
+        || inspection.id.object != object
+        || inspection.id.transaction != transaction
+        || transaction.is_nil()
+    {
+        return Err(Error::other("delete recovery inspection does not match request"));
+    }
+    if let Some(journal) = &inspection.journal
+        && (journal.protocol_version != DELETE_RECOVERY_PROTOCOL_VERSION
+            || journal.volume != volume
+            || journal.object != object
+            || journal.transaction != transaction)
+    {
+        return Err(Error::other("delete recovery journal does not match request"));
+    }
+    Ok(())
+}
+
 fn snapshot_lease_token_from_response(response: SnapshotLeaseResponse) -> Result<SnapshotLeaseToken> {
     if !response.success {
         return Err(response.error.unwrap_or_default().into());
@@ -858,6 +899,75 @@ fn spawn_control_channel_prewarm(addr: String) {
 }
 
 impl RemoteDisk {
+    async fn recover_delete_transaction(
+        &self,
+        volume: &str,
+        operation: DeleteRecoveryRpcOperation,
+    ) -> Result<DeleteRecoveryRpcReply> {
+        let payload = rmp_serde::to_vec_named(&operation)?;
+        if payload.len() > operation.max_wire_payload_bytes() {
+            return Err(Error::other("delete recovery operation exceeds payload limit"));
+        }
+        let settle_timeout = if matches!(&operation, DeleteRecoveryRpcOperation::Settle { .. }) {
+            Some(crate::disk::get_delete_recovery_timeout()?)
+        } else {
+            None
+        };
+        self.execute_with_timeout(
+            || async {
+                let mut client = if let Some(timeout) = settle_timeout {
+                    if let Some(error) = self.offline_bypass_error() {
+                        return Err(error);
+                    }
+                    node_service_delete_recovery_client(
+                        &self.addr,
+                        TonicInterceptor::Signature(gen_tonic_signature_interceptor()),
+                        timeout,
+                    )
+                    .await?
+                } else {
+                    self.get_client().await?
+                };
+                let mut request = Request::new(RecoverDeleteTransactionRequest {
+                    disk: self.endpoint.to_string(),
+                    volume: volume.to_owned(),
+                    protocol_version: DELETE_RECOVERY_PROTOCOL_VERSION,
+                    operation: payload.into(),
+                });
+                let canonical_body = rustfs_protos::canonical_recover_delete_transaction_request_body(request.get_ref())
+                    .map_err(|_| Error::other("recover_delete_transaction request length cannot be represented"))?;
+                crate::cluster::rpc::set_tonic_canonical_body_digest(&mut request, &canonical_body).map_err(Error::other)?;
+                // UNIMPLEMENTED is deliberately propagated: older peers cannot settle transactions.
+                let response = client
+                    .recover_delete_transaction(request)
+                    .await
+                    .map_err(|status| {
+                        if status.code() == Code::Unimplemented {
+                            DiskError::UnsupportedDisk
+                        } else {
+                            status.into()
+                        }
+                    })?
+                    .into_inner();
+                if response.protocol_version != DELETE_RECOVERY_PROTOCOL_VERSION {
+                    return Err(DiskError::UnsupportedDisk);
+                }
+                if !response.success {
+                    return Err(response
+                        .error
+                        .ok_or_else(|| Error::other("missing delete recovery error"))?
+                        .into());
+                }
+                if response.error.is_some() {
+                    return Err(Error::other("malformed delete recovery success"));
+                }
+                rustfs_protos::decode_delete_recovery_payload(&response.result).map_err(Into::into)
+            },
+            settle_timeout.unwrap_or_else(get_max_timeout_duration),
+        )
+        .await
+    }
+
     async fn rename_file_with_durability(
         &self,
         src_volume: &str,
@@ -1920,6 +2030,12 @@ fn encode_msgpack<T: Serialize>(value: &T) -> Result<Vec<u8>> {
     encode_msgpack_with_capacity(value, MSGPACK_ENCODE_CAPACITY_HINT)
 }
 
+// Optional fields are omitted by serde; named maps keep rollback flags and
+// transaction UUIDs independent of field order across peer versions.
+fn encode_delete_options_msgpack(value: &DeleteOptions) -> Result<Vec<u8>> {
+    Ok(rmp_serde::to_vec_named(value)?)
+}
+
 fn encode_file_info_msgpack(value: &FileInfo) -> Result<Vec<u8>> {
     encode_msgpack_with_capacity(value, FILE_INFO_MSGPACK_ENCODE_CAPACITY_HINT)
 }
@@ -2566,7 +2682,7 @@ impl DiskAPI for RemoteDisk {
                 // `_bin` support for DeleteVersion is new (grpc-optimization P2); always dual-write
                 // JSON + msgpack until its fallback counter has read zero across a release window.
                 let file_info_bin = encode_file_info_msgpack(&fi)?;
-                let opts_bin = encode_msgpack(&opts)?;
+                let opts_bin = encode_delete_options_msgpack(&opts)?;
                 let conditional_marker = opts.expected_delete_marker.is_some();
                 let file_info = serde_json::to_string(&fi)?;
                 let opts = serde_json::to_string(&opts)?;
@@ -2638,7 +2754,7 @@ impl DiskAPI for RemoteDisk {
 
         // `_bin` support for DeleteVersions is new (grpc-optimization P2); always dual-write JSON +
         // msgpack until its fallback counter has read zero across a release window.
-        let opts_bin = match encode_msgpack(&opts) {
+        let opts_bin = match encode_delete_options_msgpack(&opts) {
             Ok(opts_bin) => opts_bin,
             Err(err) => {
                 let mut errors = Vec::with_capacity(versions.len());
@@ -3617,6 +3733,138 @@ impl DiskAPI for RemoteDisk {
     }
 
     #[tracing::instrument(level = "trace", skip_all)]
+    async fn delete_version_recoverable(
+        &self,
+        volume: &str,
+        object: &str,
+        file_info: FileInfo,
+        force_del_marker: bool,
+        opts: DeleteOptions,
+    ) -> Result<()> {
+        match self
+            .recover_delete_transaction(
+                volume,
+                DeleteRecoveryRpcOperation::ApplyVersion {
+                    object: object.to_owned(),
+                    file_info: Box::new(file_info),
+                    force_del_marker,
+                    opts,
+                },
+            )
+            .await?
+        {
+            DeleteRecoveryRpcReply::AppliedVersion => Ok(()),
+            _ => Err(Error::other("unexpected recoverable delete reply")),
+        }
+    }
+
+    async fn delete_versions_recoverable(
+        &self,
+        volume: &str,
+        versions: Vec<FileInfoVersions>,
+        opts: DeleteOptions,
+    ) -> Vec<Option<DiskError>> {
+        let expected_len = versions.len();
+        let result = match self
+            .recover_delete_transaction(volume, DeleteRecoveryRpcOperation::ApplyVersions { versions, opts })
+            .await
+        {
+            Ok(DeleteRecoveryRpcReply::AppliedVersions(codes)) => decode_delete_recovery_batch_errors(codes, expected_len),
+            Ok(_) => Err(Error::other("unexpected recoverable batch delete reply")),
+            Err(error) => Err(error),
+        };
+        match result {
+            Ok(errors) => errors,
+            Err(error) => vec![Some(error); expected_len],
+        }
+    }
+
+    async fn discover_delete_transactions(
+        &self,
+        volume: &str,
+        object: Option<&str>,
+        cursor: Option<DeleteRecoveryCursor>,
+        limit: u32,
+    ) -> Result<DeleteRecoveryPage> {
+        match self
+            .recover_delete_transaction(
+                volume,
+                DeleteRecoveryRpcOperation::Discover {
+                    object: object.map(str::to_owned),
+                    cursor,
+                    limit,
+                },
+            )
+            .await?
+        {
+            DeleteRecoveryRpcReply::Discovered(page) => {
+                if object.is_some_and(|object| page.transactions.iter().any(|id| id.object != object)) {
+                    return Err(Error::other("delete recovery discovery escaped requested object"));
+                }
+                if page.transactions.len() > usize::try_from(limit).map_err(|_| Error::other("invalid discovery limit"))?
+                    || page
+                        .transactions
+                        .iter()
+                        .any(|id| id.transaction.is_nil() || id.object.is_empty())
+                {
+                    return Err(Error::other("malformed delete discovery page"));
+                }
+                Ok(page)
+            }
+            _ => Err(Error::other("unexpected delete discovery reply")),
+        }
+    }
+    async fn inspect_delete_transaction(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: Uuid,
+    ) -> Result<DeleteRecoveryInspection> {
+        match self
+            .recover_delete_transaction(
+                volume,
+                DeleteRecoveryRpcOperation::Inspect {
+                    object: object.to_owned(),
+                    transaction,
+                },
+            )
+            .await?
+        {
+            DeleteRecoveryRpcReply::Inspected(inspection) => {
+                validate_delete_recovery_inspection(volume, object, transaction, &inspection)?;
+                Ok(inspection)
+            }
+            _ => Err(Error::other("unexpected delete inspection reply")),
+        }
+    }
+    async fn settle_delete_transaction(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: Uuid,
+        expected_fingerprint: DeleteRecoveryDigest,
+        action: DeleteRecoveryAction,
+    ) -> Result<DeleteRecoveryInspection> {
+        match self
+            .recover_delete_transaction(
+                volume,
+                DeleteRecoveryRpcOperation::Settle {
+                    object: object.to_owned(),
+                    transaction,
+                    expected_fingerprint,
+                    action,
+                },
+            )
+            .await?
+        {
+            DeleteRecoveryRpcReply::Settled(inspection) => {
+                validate_delete_recovery_inspection(volume, object, transaction, &inspection)?;
+                Ok(inspection)
+            }
+            _ => Err(Error::other("unexpected delete settlement reply")),
+        }
+    }
+
     async fn settle_part_transaction(&self, volume: &str, path: &str, action: PartTransactionAction) -> Result<()> {
         self.execute_with_timeout(
             || async {
@@ -4030,6 +4278,45 @@ mod tests {
 
     static INIT: Once = Once::new();
 
+    #[test]
+    fn recoverable_batch_delete_rejects_invalid_error_codes_and_length() {
+        let errors = decode_delete_recovery_batch_errors(vec![None, Some(DiskError::FileNotFound.to_u32())], 2)
+            .expect("valid per-item errors");
+        assert!(errors[0].is_none());
+        assert_eq!(errors[1], Some(DiskError::FileNotFound));
+        assert!(decode_delete_recovery_batch_errors(vec![None], 2).is_err());
+        assert!(decode_delete_recovery_batch_errors(vec![Some(0)], 1).is_err());
+        assert!(decode_delete_recovery_batch_errors(vec![Some(u32::MAX)], 1).is_err());
+    }
+
+    #[test]
+    fn delete_recovery_inspection_rejects_wrong_transaction_object_and_protocol() {
+        let transaction = Uuid::new_v4();
+        let inspection = DeleteRecoveryInspection {
+            protocol_version: DELETE_RECOVERY_PROTOCOL_VERSION,
+            id: crate::disk::DeleteTransactionId {
+                object: "object".into(),
+                transaction,
+            },
+            state: crate::disk::DeleteRecoveryState::Absent,
+            journal: None,
+            current_digest: None,
+            current_versions: Vec::new(),
+            backup_digest: None,
+            rollback_data_complete: false,
+            commit_data_safe: false,
+            explicit_delete_safe: false,
+            fingerprint: [0; 32],
+        };
+        validate_delete_recovery_inspection("bucket", "object", transaction, &inspection).expect("matching inspection");
+        assert!(validate_delete_recovery_inspection("bucket", "other", transaction, &inspection).is_err());
+        assert!(validate_delete_recovery_inspection("bucket", "object", Uuid::new_v4(), &inspection).is_err());
+        assert!(validate_delete_recovery_inspection("bucket", "object", Uuid::nil(), &inspection).is_err());
+        let mut incompatible = inspection;
+        incompatible.protocol_version += 1;
+        assert!(validate_delete_recovery_inspection("bucket", "object", transaction, &incompatible).is_err());
+    }
+
     #[test]
     fn compare_and_update_wire_outcome_fails_closed() {
         assert_eq!(
@@ -4063,32 +4350,19 @@ mod tests {
     }
 
     #[test]
-    fn retired_marker_options_preserve_legacy_positional_wire_shape() {
+    fn delete_options_named_wire_preserves_rollback_and_legacy_marker_fields() {
         #[derive(Debug, serde::Serialize, serde::Deserialize, PartialEq)]
         struct LegacyDeleteOptions {
             recursive: bool,
             immediate: bool,
             undo_write: bool,
+            #[serde(default)]
             undo_delete: bool,
             old_data_dir: Option<Uuid>,
+            #[serde(default, skip_serializing_if = "Option::is_none")]
+            expected_delete_marker: Option<rustfs_filemeta::MetaDeleteMarker>,
         }
-        let legacy = LegacyDeleteOptions {
-            recursive: false,
-            immediate: false,
-            undo_write: false,
-            undo_delete: false,
-            old_data_dir: None,
-        };
-        let original = encode_msgpack(&legacy).unwrap();
-        let current = encode_msgpack(&DeleteOptions::default()).unwrap();
-        assert_eq!(current, original, "ordinary deletes must retain the older peer's positional payload");
-        assert_eq!(rmp_serde::from_slice::<LegacyDeleteOptions>(&current).unwrap(), legacy);
-        assert!(
-            rmp_serde::from_slice::<DeleteOptions>(&original)
-                .unwrap()
-                .expected_delete_marker
-                .is_none()
-        );
+        let transaction = Uuid::new_v4();
         let mut marker = FileInfo {
             deleted: true,
             version_id: Some(Uuid::new_v4()),
@@ -4097,12 +4371,69 @@ mod tests {
         };
         marker.set_delete_marker_incarnation(Uuid::new_v4());
         let marker = rustfs_filemeta::MetaDeleteMarker::from(marker);
+        for expected_delete_marker in [None, Some(marker)] {
+            for (undo_write, undo_delete) in [(true, false), (false, true)] {
+                let legacy = LegacyDeleteOptions {
+                    recursive: false,
+                    immediate: false,
+                    undo_write,
+                    undo_delete,
+                    old_data_dir: Some(transaction),
+                    expected_delete_marker: expected_delete_marker.clone(),
+                };
+                // Older senders use positional arrays. Their unchanged field prefix and
+                // missing optional fields must also decode on the named-map sender's peer.
+                for (encoding, payload) in [
+                    ("positional", rmp_serde::to_vec(&legacy).expect("encode legacy positional options")),
+                    ("named", rmp_serde::to_vec_named(&legacy).expect("encode legacy named options")),
+                ] {
+                    let decoded: DeleteOptions = rmp_serde::from_slice(&payload).expect("decode legacy options on current peer");
+                    assert_eq!(decoded.undo_write, undo_write, "{encoding} undo-write flag");
+                    assert_eq!(decoded.undo_delete, undo_delete, "{encoding} undo-delete flag");
+                    assert_eq!(decoded.old_data_dir, Some(transaction), "{encoding} transaction UUID");
+                    assert_eq!(decoded.expected_delete_marker, expected_delete_marker, "{encoding} marker precondition");
+                    assert!(decoded.delete_recovery_bucket_incarnation.is_none(), "{encoding} omitted incarnation");
+                    assert!(!decoded.recoverable_delete, "{encoding} omitted recovery flag");
+                }
+                for incarnation in [None, Some(Uuid::new_v4())] {
+                    let current = DeleteOptions {
+                        undo_write,
+                        undo_delete,
+                        old_data_dir: Some(transaction),
+                        expected_delete_marker: expected_delete_marker.clone(),
+                        delete_recovery_bucket_incarnation: incarnation,
+                        recoverable_delete: true,
+                        ..Default::default()
+                    };
+                    let payload = encode_delete_options_msgpack(&current).expect("encode current named options");
+                    let decoded: DeleteOptions = rmp_serde::from_slice(&payload).expect("decode current options on current peer");
+                    assert_eq!(decoded.undo_write, undo_write);
+                    assert_eq!(decoded.undo_delete, undo_delete);
+                    assert_eq!(decoded.old_data_dir, Some(transaction));
+                    assert_eq!(decoded.expected_delete_marker, expected_delete_marker);
+                    assert_eq!(decoded.delete_recovery_bucket_incarnation, incarnation);
+                    assert!(decoded.recoverable_delete);
+                    let decoded: LegacyDeleteOptions =
+                        rmp_serde::from_slice(&payload).expect("decode current options on legacy peer");
+                    assert_eq!(decoded, legacy, "unknown recovery fields cannot shift rollback or marker values");
+                }
+            }
+        }
+    }
+
+    #[test]
+    fn malformed_nonempty_delete_options_do_not_fall_back_to_json() {
         let options = DeleteOptions {
-            expected_delete_marker: Some(marker.clone()),
+            undo_write: true,
+            old_data_dir: Some(Uuid::new_v4()),
             ..Default::default()
         };
-        let decoded: DeleteOptions = rmp_serde::from_slice(&encode_msgpack(&options).unwrap()).unwrap();
-        assert_eq!(decoded.expected_delete_marker, Some(marker));
+        let json = serde_json::to_string(&options).expect("valid compatibility JSON");
+        assert!(decode_msgpack_or_json::<DeleteOptions>(&[0xc1], &json, "DeleteOptions").is_err());
+        let decoded: DeleteOptions =
+            decode_msgpack_or_json(&[], &json, "DeleteOptions").expect("absent MessagePack permits JSON compatibility");
+        assert!(decoded.undo_write);
+        assert_eq!(decoded.old_data_dir, options.old_data_dir);
     }
 
     #[test]

crates/ecstore/src/config/com.rs

@@ -495,22 +495,10 @@ pub(crate) async fn read_config_preserve_empty<S>(api: Arc<S>, file: &str) -> Re
 where
     S: EcstoreObjectIO,
 {
-    let (data, _obj) = read_config_preserve_empty_with_metadata_opts(api, file, &ObjectOptions::default()).await?;
+    let (data, _obj) = read_config_with_metadata_inner(api, file, &ObjectOptions::default(), true, None).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<
@@ -539,13 +527,15 @@ pub(crate) async fn read_config_no_lock_preserve_empty_with_metadata<S>(api: Arc
 where
     S: EcstoreObjectIO,
 {
-    read_config_preserve_empty_with_metadata_opts(
+    read_config_with_metadata_inner(
         api,
         file,
         &ObjectOptions {
             no_lock: true,
             ..Default::default()
         },
+        true,
+        None,
     )
     .await
 }
@@ -2825,10 +2815,9 @@ 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_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, should_warn_ignored_scalar_section,
-        storage_class_kvs_mut,
+        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, should_warn_ignored_scalar_section, storage_class_kvs_mut,
     };
     use crate::config::{audit, heal, notify, oidc, scanner};
     use crate::disk::{RUSTFS_META_BUCKET, endpoint::Endpoint};
@@ -5076,7 +5065,6 @@ 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,
@@ -5092,7 +5080,6 @@ 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),
@@ -5148,9 +5135,8 @@ 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(),
@@ -5445,60 +5431,6 @@ 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;

crates/ecstore/src/core/sets.rs

@@ -72,6 +72,38 @@ type WalkOptions = StorageWalkOptions<fn(&FileInfo) -> bool>;
 
 const LIST_MULTIPART_SETS_CONCURRENCY: usize = 4;
 
+#[cfg(test)]
+type TestSetLockers = HashMap<usize, Vec<Arc<dyn rustfs_lock::LockClient>>>;
+
+#[cfg(test)]
+static TEST_SET_LOCKERS: std::sync::LazyLock<std::sync::Mutex<TestSetLockers>> =
+    std::sync::LazyLock::new(|| std::sync::Mutex::new(HashMap::new()));
+
+/// Keep a fixture's real locker domain scoped to its owning instance.
+#[cfg(test)]
+pub(crate) struct ScopedSetLockers(Arc<InstanceContext>);
+
+#[cfg(test)]
+impl ScopedSetLockers {
+    pub(crate) fn install(ctx: Arc<InstanceContext>, lockers: Vec<Arc<dyn rustfs_lock::LockClient>>) -> Self {
+        let key = Arc::as_ptr(&ctx) as usize;
+        let mut domains = TEST_SET_LOCKERS.lock().expect("test set lockers mutex");
+        assert!(!domains.contains_key(&key), "the instance already owns a test locker domain");
+        domains.insert(key, lockers);
+        Self(ctx)
+    }
+}
+
+#[cfg(test)]
+impl Drop for ScopedSetLockers {
+    fn drop(&mut self) {
+        TEST_SET_LOCKERS
+            .lock()
+            .expect("test set lockers mutex")
+            .remove(&(Arc::as_ptr(&self.0) as usize));
+    }
+}
+
 fn is_idempotent_delete_prefix_error(err: &Error) -> bool {
     is_err_object_not_found(err) || is_err_strict_volume_not_found(err)
 }
@@ -273,6 +305,14 @@ impl Sets {
                 }
             }
 
+            #[cfg(test)]
+            let pool_lockers = TEST_SET_LOCKERS
+                .lock()
+                .expect("test set lockers mutex")
+                .get(&(Arc::as_ptr(&instance_ctx) as usize))
+                .cloned()
+                .unwrap_or_else(|| pool_lockers.clone());
+
             let set_disks = SetDisks::new_with_instance_ctx(
                 runtime_sources::local_node_name().await,
                 Arc::new(RwLock::new(set_drive)),

crates/ecstore/src/diagnostics/admin_server_info.rs

@@ -15,7 +15,9 @@
 use crate::cluster::rpc::{
     ScannerBucketListing, TonicInterceptor, gen_tonic_signature_interceptor, node_service_time_out_client,
 };
-use crate::data_usage::{DATA_USAGE_CACHE_NAME, DATA_USAGE_ROOT, load_data_usage_from_backend_cached};
+use crate::data_usage::{
+    DATA_USAGE_CACHE_NAME, DATA_USAGE_ROOT, load_admin_data_usage_from_backend_cached as load_server_info_usage_snapshot,
+};
 use crate::error::{Error, Result};
 use crate::{
     disk::endpoint::{Endpoint, EndpointType},
@@ -294,7 +296,7 @@ pub async fn get_server_info(get_pools: bool) -> InfoMessage {
     if let Some(store) = runtime_sources::object_store_handle() {
         mode = ITEM_ONLINE;
         apply_data_usage_result(
-            load_data_usage_from_backend_cached(store.clone()).await,
+            load_server_info_usage_snapshot(store.clone()).await,
             &mut buckets,
             &mut objects,
             &mut versions,
@@ -967,6 +969,93 @@ mod tests {
         assert_eq!(usage.size, 6);
     }
 
+    #[tokio::test]
+    #[serial]
+    async fn server_info_reads_complete_observation_without_promoting_authority() {
+        use crate::bucket::metadata_sys::test_support::isolated_store_over_temp_disks;
+        use crate::config::com::{read_config, save_config};
+        use crate::data_usage::{
+            DATA_USAGE_OBJ_NAME_PATH, DATA_USAGE_OBSERVED_OBJ_NAME_PATH, invalidate_data_usage_snapshot_cache,
+            load_data_usage_from_backend_cached,
+        };
+        use rustfs_data_usage::{BucketUsageInfo, DataUsageInfo};
+        use std::time::{Duration, SystemTime};
+
+        let (_dirs, store) = isolated_store_over_temp_disks().await;
+        let primary = DataUsageInfo {
+            last_update: Some(SystemTime::UNIX_EPOCH + Duration::from_secs(1)),
+            scanner_epoch: Some(1),
+            usage_snapshot_bootstrap_pending: true,
+            usage_snapshot_converged: Some(false),
+            ..Default::default()
+        };
+        let observed = DataUsageInfo {
+            last_update: Some(SystemTime::UNIX_EPOCH + Duration::from_secs(2)),
+            scanner_epoch: Some(1),
+            scanner_cycle: Some(1),
+            buckets_count: 1,
+            objects_total_count: 3,
+            versions_total_count: 4,
+            delete_markers_total_count: 1,
+            objects_total_size: 6,
+            buckets_usage: [(
+                "bucket".to_string(),
+                BucketUsageInfo {
+                    objects_count: 3,
+                    versions_count: 4,
+                    delete_markers_count: 1,
+                    size: 6,
+                    ..Default::default()
+                },
+            )]
+            .into_iter()
+            .collect(),
+            usage_snapshot_complete: true,
+            usage_snapshot_converged: Some(false),
+            usage_snapshot_authoritative_baseline: Some(primary.snapshot_identity()),
+            ..Default::default()
+        };
+        let primary_bytes = serde_json::to_vec(&primary).expect("bootstrap should encode");
+        save_config(store.clone(), DATA_USAGE_OBJ_NAME_PATH.as_str(), primary_bytes.clone())
+            .await
+            .expect("bootstrap should persist");
+        save_config(
+            store.clone(),
+            DATA_USAGE_OBSERVED_OBJ_NAME_PATH.as_str(),
+            serde_json::to_vec(&observed).expect("observation should encode"),
+        )
+        .await
+        .expect("observation should persist");
+        invalidate_data_usage_snapshot_cache().await;
+
+        let displayed = super::load_server_info_usage_snapshot(store.clone())
+            .await
+            .expect("server info should load the complete observation");
+        assert_eq!(displayed.usage_snapshot_converged, Some(false));
+        let mut buckets = rustfs_madmin::Buckets::default();
+        let mut objects = rustfs_madmin::Objects::default();
+        let mut versions = rustfs_madmin::Versions::default();
+        let mut delete_markers = rustfs_madmin::DeleteMarkers::default();
+        let mut usage = rustfs_madmin::Usage::default();
+        apply_data_usage_result(Ok(displayed), &mut buckets, &mut objects, &mut versions, &mut delete_markers, &mut usage);
+        assert!(objects.error.is_none());
+        assert_eq!(
+            (buckets.count, objects.count, versions.count, delete_markers.count, usage.size),
+            (1, 3, 4, 1, 6)
+        );
+        let quota = load_data_usage_from_backend_cached(store.clone())
+            .await
+            .expect("quota should retain its bootstrap state");
+        assert!(!quota.is_complete_bucket_usage_snapshot());
+        assert_eq!(
+            read_config(store, DATA_USAGE_OBJ_NAME_PATH.as_str())
+                .await
+                .expect("primary should remain readable"),
+            primary_bytes
+        );
+        invalidate_data_usage_snapshot_cache().await;
+    }
+
     #[test]
     fn incomplete_data_usage_is_unavailable_in_server_info() {
         let mut buckets = rustfs_madmin::Buckets::default();

crates/ecstore/src/diagnostics/get.rs

@@ -182,6 +182,7 @@ pub(crate) const GET_METADATA_CACHE_REASON_DELETE_MARKER: &str = "delete_marker"
 pub(crate) const GET_METADATA_CACHE_REASON_DIST_ERASURE: &str = "dist_erasure";
 pub(crate) const GET_METADATA_CACHE_REASON_INCL_FREE_VERSIONS: &str = "incl_free_versions";
 pub(crate) const GET_METADATA_CACHE_REASON_INSUFFICIENT_CACHED_QUORUM: &str = "insufficient_cached_quorum";
+pub(crate) const GET_METADATA_CACHE_REASON_BODY_LAYOUT_REQUIRED: &str = "body_layout_required";
 pub(crate) const GET_METADATA_CACHE_REASON_META_BUCKET: &str = "meta_bucket";
 pub(crate) const GET_METADATA_CACHE_REASON_NO_LOCK: &str = "no_lock";
 pub(crate) const GET_METADATA_CACHE_REASON_NOT_FOUND_OR_EXPIRED: &str = "not_found_or_expired";

crates/ecstore/src/disk/disk_store.rs

@@ -466,12 +466,11 @@ impl LocalDiskWrapper {
         self.track_disk_health_mutation(
             "delete_version",
             DiskMetricMutation::Delete,
-            || async {
+            || {
                 Box::pin(
                     self.disk
                         .delete_version_with_namespace_owner(volume, path, fi, force_del_marker, opts, namespace_owner),
                 )
-                .await
             },
             get_max_timeout_duration(),
         )
@@ -1816,6 +1815,8 @@ impl LocalDiskWrapper {
                     undo_delete: false,
                     old_data_dir: None,
                     expected_delete_marker: None,
+                    recoverable_delete: false,
+                    delete_recovery_bucket_incarnation: None,
                 },
             )
             .await?;
@@ -2001,10 +2002,86 @@ impl LocalDiskWrapper {
     }
 
     /// Get the current disk ID
+    pub(crate) async fn delete_versions_with_namespace_owner(
+        &self,
+        volume: &str,
+        versions: Vec<FileInfoVersions>,
+        opts: DeleteOptions,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Vec<Option<Error>> {
+        let version_count = versions.len();
+        self.metrics.record_operation_call("delete_versions");
+        // Check if disk is faulty before proceeding
+        if self.health.is_faulty() {
+            self.metrics.record_availability_error();
+            return vec![Some(DiskError::FaultyDisk); versions.len()];
+        }
+
+        // Check if disk is stale
+        if let Err(e) = self.check_disk_stale().await {
+            self.metrics.record_availability_error();
+            return vec![Some(e); versions.len()];
+        }
+
+        let _io_permit = match self.acquire_disk_io_permit().await {
+            Ok(permit) => permit,
+            Err(error) => return vec![Some(error); version_count],
+        };
+
+        // Record operation start
+        self.health.last_started.store(current_unix_nanos(), Ordering::Relaxed);
+        let waiting_guard = self.health.waiting_guard();
+        let metric_waiting_guard = self.metrics.waiting_guard();
+        let started = Instant::now();
+
+        // Execute the operation
+        let result = self
+            .disk
+            .delete_versions_with_namespace_owner(volume, versions, opts, namespace_owner)
+            .await;
+        self.metrics.record_operation_latency("delete_versions", started.elapsed());
+        self.record_batch_delete_error_metrics(&result);
+
+        drop(waiting_guard);
+        drop(metric_waiting_guard);
+        let has_err = result.iter().any(|e| e.is_some());
+        if !has_err {
+            // Log success and decrement waiting counter
+            self.health.record_operation_success(&self.endpoint(), "operation_success");
+            self.metrics.record_mutation_success(DiskMetricMutation::Delete);
+        }
+
+        result
+    }
+
     pub async fn get_current_disk_id(&self) -> Option<Uuid> {
         *self.disk_id.read().await
     }
 
+    pub(crate) async fn settle_delete_transaction_with_namespace_owner(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: uuid::Uuid,
+        expected_fingerprint: crate::disk::DeleteRecoveryDigest,
+        action: crate::disk::DeleteRecoveryAction,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<crate::disk::DeleteRecoveryInspection> {
+        self.track_disk_health_mutation(
+            "settle_delete_transaction",
+            DiskMetricMutation::Delete,
+            || {
+                Box::pin(async {
+                    self.disk
+                        .delete_recovery_settle(volume, object, transaction, expected_fingerprint, action, namespace_owner)
+                        .await
+                })
+            },
+            crate::disk::get_delete_recovery_timeout()?,
+        )
+        .await
+    }
+
     /// Track disk health for an operation.
     /// This method should wrap disk operations to ensure health checking.
     pub async fn track_disk_health<T, F, Fut>(&self, operation: F, timeout_duration: Duration) -> Result<T>
@@ -2195,6 +2272,87 @@ impl LocalDiskWrapper {
 
 #[async_trait::async_trait]
 impl DiskAPI for LocalDiskWrapper {
+    async fn delete_version_recoverable(
+        &self,
+        volume: &str,
+        object: &str,
+        file_info: FileInfo,
+        force_del_marker: bool,
+        mut opts: DeleteOptions,
+    ) -> Result<()> {
+        crate::disk::validate_delete_recovery_options(&opts)?;
+        if object.starts_with('/') {
+            return Err(DiskError::InvalidPath);
+        }
+        opts.recoverable_delete = true;
+        self.delete_version(volume, object, file_info, force_del_marker, opts).await
+    }
+    async fn delete_versions_recoverable(
+        &self,
+        volume: &str,
+        versions: Vec<FileInfoVersions>,
+        mut opts: DeleteOptions,
+    ) -> Vec<Option<DiskError>> {
+        if let Err(err) = crate::disk::validate_delete_recovery_options(&opts) {
+            return vec![Some(err); versions.len()];
+        }
+        if versions.iter().any(|version| version.name.starts_with('/')) {
+            return vec![Some(DiskError::InvalidPath); versions.len()];
+        }
+        opts.recoverable_delete = true;
+        self.delete_versions(volume, versions, opts).await
+    }
+    async fn discover_delete_transactions(
+        &self,
+        volume: &str,
+        object: Option<&str>,
+        cursor: Option<crate::disk::DeleteRecoveryCursor>,
+        limit: u32,
+    ) -> Result<crate::disk::DeleteRecoveryPage> {
+        self.track_disk_health_with_op(
+            "discover_delete_transactions",
+            || async {
+                self.disk
+                    .discover_delete_transactions(volume, object, cursor.clone(), limit)
+                    .await
+            },
+            get_max_timeout_duration(),
+        )
+        .await
+    }
+    async fn inspect_delete_transaction(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: uuid::Uuid,
+    ) -> Result<crate::disk::DeleteRecoveryInspection> {
+        self.track_disk_health_with_op(
+            "inspect_delete_transaction",
+            || async { self.disk.inspect_delete_transaction(volume, object, transaction).await },
+            get_max_timeout_duration(),
+        )
+        .await
+    }
+    async fn settle_delete_transaction(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: uuid::Uuid,
+        expected_fingerprint: crate::disk::DeleteRecoveryDigest,
+        action: crate::disk::DeleteRecoveryAction,
+    ) -> Result<crate::disk::DeleteRecoveryInspection> {
+        self.track_disk_health_mutation(
+            "settle_delete_transaction",
+            DiskMetricMutation::Delete,
+            || async {
+                self.disk
+                    .settle_delete_transaction(volume, object, transaction, expected_fingerprint, action)
+                    .await
+            },
+            crate::disk::get_delete_recovery_timeout()?,
+        )
+        .await
+    }
     fn has_replacement_mount_lease(&self) -> bool {
         self.disk.has_replacement_mount_lease()
     }
@@ -2320,6 +2478,15 @@ impl DiskAPI for LocalDiskWrapper {
         })
     }
 
+    async fn bucket_creation_witness(&self, volume: &str) -> Result<Option<super::os::NativeBucketCreationWitness>> {
+        self.track_disk_health_with_op(
+            "bucket_creation_witness",
+            || async { self.disk.bucket_creation_witness(volume).await },
+            Duration::ZERO,
+        )
+        .await
+    }
+
     async fn make_volume(&self, volume: &str) -> Result<()> {
         // Scoped heal must drain directory creation before releasing its lifecycle owner.
         let timeout = if crate::store::bucket_heal_scope(volume).is_some() {
@@ -2408,46 +2575,7 @@ impl DiskAPI for LocalDiskWrapper {
     }
 
     async fn delete_versions(&self, volume: &str, versions: Vec<FileInfoVersions>, opts: DeleteOptions) -> Vec<Option<Error>> {
-        let version_count = versions.len();
-        self.metrics.record_operation_call("delete_versions");
-        // Check if disk is faulty before proceeding
-        if self.health.is_faulty() {
-            self.metrics.record_availability_error();
-            return vec![Some(DiskError::FaultyDisk); versions.len()];
-        }
-
-        // Check if disk is stale
-        if let Err(e) = self.check_disk_stale().await {
-            self.metrics.record_availability_error();
-            return vec![Some(e); versions.len()];
-        }
-
-        let _io_permit = match self.acquire_disk_io_permit().await {
-            Ok(permit) => permit,
-            Err(error) => return vec![Some(error); version_count],
-        };
-
-        // Record operation start
-        self.health.last_started.store(current_unix_nanos(), Ordering::Relaxed);
-        let waiting_guard = self.health.waiting_guard();
-        let metric_waiting_guard = self.metrics.waiting_guard();
-        let started = Instant::now();
-
-        // Execute the operation
-        let result = self.disk.delete_versions(volume, versions, opts).await;
-        self.metrics.record_operation_latency("delete_versions", started.elapsed());
-        self.record_batch_delete_error_metrics(&result);
-
-        drop(waiting_guard);
-        drop(metric_waiting_guard);
-        let has_err = result.iter().any(|e| e.is_some());
-        if !has_err {
-            // Log success and decrement waiting counter
-            self.health.record_operation_success(&self.endpoint(), "operation_success");
-            self.metrics.record_mutation_success(DiskMetricMutation::Delete);
-        }
-
-        result
+        self.delete_versions_with_namespace_owner(volume, versions, opts, None).await
     }
 
     async fn delete_paths(&self, volume: &str, paths: &[String]) -> Result<()> {

crates/ecstore/src/disk/error_reduce.rs

@@ -131,6 +131,15 @@ pub fn build_write_quorum_failure_summary(
 
 fn dominant_error_label(errors: &[Option<Error>], ignored_errs: &[Error], dominant_error: Option<&Error>) -> &'static str {
     let Some(dominant_error) = dominant_error else {
+        // The reducer also returns None when every failure is ignored for
+        // quorum voting. That case contains no successful nil entry.
+        if !errors.is_empty() && errors.iter().all(Option::is_some) {
+            return if errors.iter().all(|error| error.as_ref() == Some(&Error::DiskNotFound)) {
+                "disk_not_found"
+            } else {
+                "all_ignored"
+            };
+        }
         return "nil_dominated";
     };
 
@@ -387,9 +396,9 @@ mod tests {
     }
 
     #[test]
-    fn test_build_write_quorum_failure_summary_all_ignored_is_nil_dominated() {
-        // All disks offline (all DiskNotFound). The dominant error must be None and
-        // the label must be "nil_dominated" rather than falling back to "other_error".
+    fn test_build_write_quorum_failure_summary_all_missing_is_disk_not_found() {
+        // Ignoring unavailable disks for quorum reduction must not imply a
+        // successful nil entry in the diagnostic label.
         let errors = vec![
             Some(Error::DiskNotFound),
             Some(Error::DiskNotFound),
@@ -397,7 +406,21 @@ mod tests {
         ];
         let summary = build_write_quorum_failure_summary(&errors, OBJECT_OP_IGNORED_ERRS, 2);
         assert_eq!(summary.dominant_error, None);
-        assert_eq!(summary.dominant_error_label, "nil_dominated");
+        assert_eq!(summary.achieved, 0);
+        assert_eq!(summary.dominant_error_label, "disk_not_found");
+    }
+
+    #[test]
+    fn test_build_write_quorum_failure_summary_all_ignored_has_no_success() {
+        let errors = [Some(Error::FaultyDisk), Some(Error::DiskNotFound)];
+        let summary = build_write_quorum_failure_summary(&errors, OBJECT_OP_IGNORED_ERRS, 2);
+        assert_eq!(summary.dominant_error, None);
+        assert_eq!(summary.achieved, 0);
+        assert_eq!(summary.dominant_error_label, "all_ignored");
+        assert_eq!(
+            reduce_write_quorum_errs(&errors, OBJECT_OP_IGNORED_ERRS, 2),
+            Some(Error::ErasureWriteQuorum)
+        );
     }
 
     #[test]

crates/ecstore/src/disk/fs.rs

@@ -117,6 +117,9 @@ pub const O_APPEND: FileMode = 0x00400;
 //     create_new: bool,
 
 pub async fn open_file(path: impl AsRef<Path>, mode: FileMode) -> io::Result<File> {
+    if mode & O_CREATE != 0 {
+        super::os::record_native_publication(path.as_ref());
+    }
     let base_opts = match mode & (O_RDONLY | O_WRONLY | O_RDWR) {
         O_RDONLY => get_readonly_options(),
         O_WRONLY => get_writeonly_options(),
@@ -160,6 +163,7 @@ pub fn lstat_std(path: impl AsRef<Path>) -> io::Result<Metadata> {
 }
 
 pub async fn make_dir_all(path: impl AsRef<Path>) -> io::Result<()> {
+    super::os::record_native_publication(path.as_ref());
     fs::create_dir_all(path.as_ref()).await
 }
 
@@ -211,15 +215,18 @@ pub fn remove_all_std(path: impl AsRef<Path>) -> io::Result<()> {
 }
 
 pub async fn mkdir(path: impl AsRef<Path>) -> io::Result<()> {
+    super::os::record_native_publication(path.as_ref());
     fs::create_dir(path.as_ref()).await
 }
 
 pub async fn rename(from: impl AsRef<Path>, to: impl AsRef<Path>) -> io::Result<()> {
+    super::os::record_native_publication(to.as_ref());
     fs::rename(from, to).await
 }
 
 #[cfg(any(not(windows), test))]
 pub fn rename_std(from: impl AsRef<Path>, to: impl AsRef<Path>) -> io::Result<()> {
+    super::os::record_native_publication(to.as_ref());
     std::fs::rename(from, to)
 }
 

crates/ecstore/src/disk/mod.rs

@@ -230,6 +230,105 @@ pub enum Disk {
 }
 
 impl Disk {
+    pub(crate) async fn delete_versions_with_namespace_owner(
+        &self,
+        volume: &str,
+        versions: Vec<FileInfoVersions>,
+        opts: DeleteOptions,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Vec<Option<Error>> {
+        match self {
+            Self::Local(disk) => {
+                disk.delete_versions_with_namespace_owner(volume, versions, opts, namespace_owner)
+                    .await
+            }
+            Self::Remote(disk) => {
+                let _owner = namespace_owner;
+                disk.delete_versions(volume, versions, opts).await
+            }
+        }
+    }
+
+    pub(crate) async fn delete_versions_recoverable_with_namespace_owner(
+        &self,
+        volume: &str,
+        versions: Vec<FileInfoVersions>,
+        mut opts: DeleteOptions,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Vec<Option<Error>> {
+        if let Err(error) = validate_delete_recovery_options(&opts) {
+            return vec![Some(error); versions.len()];
+        }
+        if versions.iter().any(|version| version.name.starts_with('/')) {
+            return vec![Some(DiskError::InvalidPath); versions.len()];
+        }
+        opts.recoverable_delete = true;
+        match self {
+            Self::Local(disk) => {
+                disk.delete_versions_with_namespace_owner(volume, versions, opts, namespace_owner)
+                    .await
+            }
+            Self::Remote(disk) => {
+                let _owner = namespace_owner;
+                disk.delete_versions_recoverable(volume, versions, opts).await
+            }
+        }
+    }
+
+    pub(crate) async fn settle_delete_transaction_with_namespace_owner(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: Uuid,
+        expected_fingerprint: DeleteRecoveryDigest,
+        action: DeleteRecoveryAction,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<DeleteRecoveryInspection> {
+        match self {
+            Self::Local(disk) => {
+                disk.settle_delete_transaction_with_namespace_owner(
+                    volume,
+                    object,
+                    transaction,
+                    expected_fingerprint,
+                    action,
+                    namespace_owner,
+                )
+                .await
+            }
+            Self::Remote(disk) => {
+                let _owner = namespace_owner;
+                disk.settle_delete_transaction(volume, object, transaction, expected_fingerprint, action)
+                    .await
+            }
+        }
+    }
+
+    pub(crate) async fn delete_version_recoverable_with_namespace_owner(
+        &self,
+        volume: &str,
+        path: &str,
+        fi: FileInfo,
+        force_del_marker: bool,
+        mut opts: DeleteOptions,
+        namespace_owner: Option<Arc<dyn Send + Sync>>,
+    ) -> Result<()> {
+        validate_delete_recovery_options(&opts)?;
+        if path.starts_with('/') {
+            return Err(DiskError::InvalidPath);
+        }
+        opts.recoverable_delete = true;
+        match self {
+            Self::Local(disk) => {
+                disk.delete_version_with_namespace_owner(volume, path, fi, force_del_marker, opts, namespace_owner)
+                    .await
+            }
+            Self::Remote(disk) => {
+                disk.delete_version_recoverable(volume, path, fi, force_del_marker, opts)
+                    .await
+            }
+        }
+    }
     pub(crate) async fn set_disk_id_state(&self, id: Option<Uuid>) -> Result<()> {
         match self {
             Disk::Local(local_disk) => {
@@ -257,6 +356,70 @@ impl Disk {
 
 #[async_trait::async_trait]
 impl DiskAPI for Disk {
+    async fn delete_version_recoverable(
+        &self,
+        volume: &str,
+        object: &str,
+        file_info: FileInfo,
+        force_del_marker: bool,
+        opts: DeleteOptions,
+    ) -> Result<()> {
+        self.delete_version_recoverable_with_namespace_owner(volume, object, file_info, force_del_marker, opts, None)
+            .await
+    }
+    async fn delete_versions_recoverable(
+        &self,
+        volume: &str,
+        versions: Vec<FileInfoVersions>,
+        opts: DeleteOptions,
+    ) -> Vec<Option<DiskError>> {
+        match self {
+            Self::Local(disk) => disk.delete_versions_recoverable(volume, versions, opts).await,
+            Self::Remote(disk) => disk.delete_versions_recoverable(volume, versions, opts).await,
+        }
+    }
+    async fn discover_delete_transactions(
+        &self,
+        volume: &str,
+        object: Option<&str>,
+        cursor: Option<DeleteRecoveryCursor>,
+        limit: u32,
+    ) -> Result<DeleteRecoveryPage> {
+        match self {
+            Self::Local(disk) => disk.discover_delete_transactions(volume, object, cursor, limit).await,
+            Self::Remote(disk) => disk.discover_delete_transactions(volume, object, cursor, limit).await,
+        }
+    }
+    async fn inspect_delete_transaction(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: Uuid,
+    ) -> Result<DeleteRecoveryInspection> {
+        match self {
+            Self::Local(disk) => disk.inspect_delete_transaction(volume, object, transaction).await,
+            Self::Remote(disk) => disk.inspect_delete_transaction(volume, object, transaction).await,
+        }
+    }
+    async fn settle_delete_transaction(
+        &self,
+        volume: &str,
+        object: &str,
+        transaction: Uuid,
+        expected_fingerprint: DeleteRecoveryDigest,
+        action: DeleteRecoveryAction,
+    ) -> Result<DeleteRecoveryInspection> {
+        match self {
+            Self::Local(disk) => {
+                disk.settle_delete_transaction(volume, object, transaction, expected_fingerprint, action)
+                    .await
+            }
+            Self::Remote(disk) => {
+                disk.settle_delete_transaction(volume, object, transaction, expected_fingerprint, action)
+                    .await
+            }
+        }
+    }
     fn to_string(&self) -> String {
         match self {
             Disk::Local(local_disk) => local_disk.to_string(),
@@ -327,6 +490,13 @@ impl DiskAPI for Disk {
         }
     }
 
+    async fn bucket_creation_witness(&self, volume: &str) -> Result<Option<os::NativeBucketCreationWitness>> {
+        match self {
+            Disk::Local(local_disk) => local_disk.bucket_creation_witness(volume).await,
+            Disk::Remote(_) => Ok(None),
+        }
+    }
+
     #[tracing::instrument(level = "trace", skip_all)]
     async fn make_volume(&self, volume: &str) -> Result<()> {
         match self {
@@ -1121,6 +1291,11 @@ pub trait DiskAPI: Debug + Send + Sync + 'static {
     // NSScanner
 
     // Volume operations.
+    /// Unknown or remote backends cannot attest process-local publication history.
+    async fn bucket_creation_witness(&self, _volume: &str) -> Result<Option<os::NativeBucketCreationWitness>> {
+        Ok(None)
+    }
+
     async fn make_volume(&self, volume: &str) -> Result<()>;
     async fn make_volumes(&self, volume: Vec<&str>) -> Result<()>;
     async fn list_volumes(&self) -> Result<Vec<VolumeInfo>>;
@@ -1246,6 +1421,51 @@ pub trait DiskAPI: Debug + Send + Sync + 'static {
         Err(DiskError::MethodNotAllowed)
     }
     async fn delete(&self, volume: &str, path: &str, opt: DeleteOptions) -> Result<()>;
+    async fn discover_delete_transactions(
+        &self,
+        _volume: &str,
+        _object: Option<&str>,
+        _cursor: Option<DeleteRecoveryCursor>,
+        _limit: u32,
+    ) -> Result<DeleteRecoveryPage> {
+        Err(DiskError::MethodNotAllowed)
+    }
+    async fn delete_version_recoverable(
+        &self,
+        _volume: &str,
+        _object: &str,
+        _file_info: FileInfo,
+        _force_del_marker: bool,
+        _opts: DeleteOptions,
+    ) -> Result<()> {
+        Err(DiskError::MethodNotAllowed)
+    }
+    async fn delete_versions_recoverable(
+        &self,
+        _volume: &str,
+        versions: Vec<FileInfoVersions>,
+        _opts: DeleteOptions,
+    ) -> Vec<Option<DiskError>> {
+        vec![Some(DiskError::MethodNotAllowed); versions.len()]
+    }
+    async fn inspect_delete_transaction(
+        &self,
+        _volume: &str,
+        _object: &str,
+        _transaction: Uuid,
+    ) -> Result<DeleteRecoveryInspection> {
+        Err(DiskError::MethodNotAllowed)
+    }
+    async fn settle_delete_transaction(
+        &self,
+        _volume: &str,
+        _object: &str,
+        _transaction: Uuid,
+        _expected_fingerprint: DeleteRecoveryDigest,
+        _action: DeleteRecoveryAction,
+    ) -> Result<DeleteRecoveryInspection> {
+        Err(DiskError::MethodNotAllowed)
+    }
     // VerifyFile
     async fn verify_file(&self, volume: &str, path: &str, fi: &FileInfo) -> Result<CheckPartsResp>;
     // CheckParts
@@ -1582,6 +1802,272 @@ pub struct DeleteOptions {
     /// Remote calls carrying it must use DeleteRetiredMarker, never DeleteVersion.
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub expected_delete_marker: Option<rustfs_filemeta::MetaDeleteMarker>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub delete_recovery_bucket_incarnation: Option<Uuid>,
+    #[serde(default)]
+    pub recoverable_delete: bool,
+}
+
+pub const DELETE_RECOVERY_PROTOCOL_VERSION: u32 = 1;
+pub(crate) fn get_delete_recovery_timeout() -> Result<std::time::Duration> {
+    let value = std::env::var("RUSTFS_DELETE_RECOVERY_TIMEOUT_SECS");
+    match value {
+        Ok(value) => parse_delete_recovery_timeout(Some(&value)),
+        Err(std::env::VarError::NotPresent) => parse_delete_recovery_timeout(None),
+        Err(std::env::VarError::NotUnicode(_)) => Err(DiskError::other("invalid delete recovery timeout configuration")),
+    }
+}
+
+fn parse_delete_recovery_timeout(value: Option<&str>) -> Result<std::time::Duration> {
+    let seconds = match value {
+        None => 900,
+        Some(value) => value
+            .parse::<u64>()
+            .ok()
+            .filter(|seconds| (30..=86400).contains(seconds))
+            .ok_or_else(|| DiskError::other("delete recovery timeout must be an integer between 30 and 86400 seconds"))?,
+    };
+    Ok(std::time::Duration::from_secs(seconds))
+}
+
+pub(crate) fn validate_delete_recovery_options(opts: &DeleteOptions) -> Result<()> {
+    if opts.old_data_dir.is_none_or(|id| id.is_nil())
+        || opts.undo_write
+        || opts.undo_delete
+        || opts.recursive
+        || opts.immediate
+        || opts.expected_delete_marker.is_some()
+        || opts.delete_recovery_bucket_incarnation.is_some_and(|id| id.is_nil())
+    {
+        return Err(DiskError::FileCorrupt);
+    }
+    Ok(())
+}
+pub type DeleteRecoveryDigest = [u8; 32];
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct DeleteTransactionId {
+    pub object: String,
+    pub transaction: Uuid,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct DeleteRecoveryCursor {
+    pub token: Uuid,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct DeleteRecoveryPage {
+    pub transactions: Vec<DeleteTransactionId>,
+    pub next: Option<DeleteRecoveryCursor>,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct DeleteRecoveryJournal {
+    pub protocol_version: u32,
+    pub volume: String,
+    pub object: String,
+    pub transaction: Uuid,
+    pub bucket_incarnation: Option<Uuid>,
+    pub original_digest: Option<DeleteRecoveryDigest>,
+    pub target_digest: Option<DeleteRecoveryDigest>,
+    pub data_dirs: Vec<Uuid>,
+    pub deleted_versions: Vec<Uuid>,
+    pub requests: Vec<FileInfo>,
+    pub original_versions: Vec<DeleteRecoveryVersionIdentity>,
+    #[serde(default)]
+    pub predecessors: Vec<Uuid>,
+}
+
+impl DeleteRecoveryJournal {
+    /// Checks source generations only; the coordinator must supply a certified
+    /// decision and the receiver must retain its namespace/incarnation fences.
+    pub(crate) fn matches_adoption_source(&self, current: &[DeleteRecoveryVersionIdentity]) -> bool {
+        if self.requests.is_empty() {
+            return false;
+        }
+        let mut originals = std::collections::HashMap::with_capacity(self.original_versions.len());
+        for version in &self.original_versions {
+            originals.entry(version.version_id.unwrap_or_default()).or_insert(version);
+        }
+        let mut locals = std::collections::HashMap::with_capacity(current.len());
+        for version in current {
+            locals.entry(version.version_id.unwrap_or_default()).or_insert(version);
+        }
+        self.requests.iter().all(|request| {
+            if request.deleted && request.mark_deleted {
+                return current.first() == self.original_versions.first();
+            }
+            let id = request.version_id.unwrap_or_default();
+            let Some(original) = originals.get(&id) else {
+                return !id.is_nil() && !locals.contains_key(&id);
+            };
+            match locals.get(&id) {
+                Some(local) => local == original,
+                None => !id.is_nil(),
+            }
+        })
+    }
+
+    /// Matches immutable local preparation intent against an independently
+    /// inspected same-transaction commit receipt. This match is not authority
+    /// by itself; the coordinator must supply the certified receipt.
+    pub(crate) fn matches_prepared_authority(&self, authority: &Self) -> bool {
+        if self.protocol_version != DELETE_RECOVERY_PROTOCOL_VERSION
+            || authority.protocol_version != DELETE_RECOVERY_PROTOCOL_VERSION
+            || self.transaction.is_nil()
+            || self.transaction != authority.transaction
+            || self.volume != authority.volume
+            || self.object != authority.object
+            || self.bucket_incarnation != authority.bucket_incarnation
+            || self.bucket_incarnation.is_some_and(|id| id.is_nil())
+            || self.requests.is_empty()
+            || self.requests != authority.requests
+            || self.deleted_versions.iter().collect::<std::collections::HashSet<_>>()
+                != authority.deleted_versions.iter().collect::<std::collections::HashSet<_>>()
+        {
+            return false;
+        }
+        let sources: std::collections::HashMap<_, _> = self
+            .original_versions
+            .iter()
+            .map(|version| (version.version_id.unwrap_or_default(), version))
+            .collect();
+        let certified: std::collections::HashMap<_, _> = authority
+            .original_versions
+            .iter()
+            .map(|version| (version.version_id.unwrap_or_default(), version))
+            .collect();
+        if sources.len() != self.original_versions.len() || certified.len() != authority.original_versions.len() {
+            return false;
+        }
+        self.requests.iter().all(|request| {
+            let (local, remote) = if request.deleted && request.mark_deleted {
+                (self.original_versions.first(), authority.original_versions.first())
+            } else {
+                let id = request.version_id.unwrap_or_default();
+                (sources.get(&id).copied(), certified.get(&id).copied())
+            };
+            match (local, remote) {
+                (Some(local), Some(remote)) => local == remote,
+                (None, None) => {
+                    (!(request.deleted && request.mark_deleted) && request.version_id.is_some_and(|id| !id.is_nil()))
+                        || (self.original_digest.is_none() && authority.original_digest.is_none())
+                }
+                _ => false,
+            }
+        })
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct DeleteRecoveryVersionIdentity {
+    pub version_id: Option<Uuid>,
+    pub mod_time: Option<OffsetDateTime>,
+    pub data_dir: Option<Uuid>,
+    pub deleted: bool,
+    pub metadata_digest: DeleteRecoveryDigest,
+}
+
+impl DeleteRecoveryVersionIdentity {
+    pub(crate) fn from_file_info(info: FileInfo) -> error::Result<Self> {
+        local::delete_recovery::generation(info)
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+pub enum DeleteRecoveryState {
+    Absent,
+    NewPrepared,
+    QuorumCommitted,
+    CommitFinished,
+    LegacyAmbiguous,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct DeleteRecoveryInspection {
+    pub protocol_version: u32,
+    pub id: DeleteTransactionId,
+    pub state: DeleteRecoveryState,
+    pub journal: Option<DeleteRecoveryJournal>,
+    pub current_digest: Option<DeleteRecoveryDigest>,
+    pub current_versions: Vec<DeleteRecoveryVersionIdentity>,
+    pub backup_digest: Option<DeleteRecoveryDigest>,
+    pub rollback_data_complete: bool,
+    pub commit_data_safe: bool,
+    pub explicit_delete_safe: bool,
+    pub fingerprint: DeleteRecoveryDigest,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum DeleteRecoveryAction {
+    PublishCommit,
+    FinishCommit,
+    FinalizeCommit,
+    Rollback,
+    DiscardLegacy,
+    AdoptCommit { authority: Box<DeleteRecoveryJournal> },
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub enum DeleteRecoveryRpcOperation {
+    Discover {
+        object: Option<String>,
+        cursor: Option<DeleteRecoveryCursor>,
+        limit: u32,
+    },
+    Inspect {
+        object: String,
+        transaction: Uuid,
+    },
+    Settle {
+        object: String,
+        transaction: Uuid,
+        expected_fingerprint: DeleteRecoveryDigest,
+        action: DeleteRecoveryAction,
+    },
+    ApplyVersion {
+        object: String,
+        file_info: Box<FileInfo>,
+        force_del_marker: bool,
+        opts: DeleteOptions,
+    },
+    ApplyVersions {
+        versions: Vec<FileInfoVersions>,
+        opts: DeleteOptions,
+    },
+}
+
+impl DeleteRecoveryRpcOperation {
+    /// Full metadata application and adoption share the existing mutation envelope.
+    pub fn max_wire_payload_bytes(&self) -> usize {
+        match self {
+            Self::ApplyVersion { .. }
+            | Self::ApplyVersions { .. }
+            | Self::Settle {
+                action: DeleteRecoveryAction::AdoptCommit { .. },
+                ..
+            } => rustfs_protos::DELETE_RECOVERY_MAX_PAYLOAD_BYTES,
+            _ => rustfs_protos::DELETE_RECOVERY_MAX_CONTROL_PAYLOAD_BYTES,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub enum DeleteRecoveryRpcReply {
+    Discovered(DeleteRecoveryPage),
+    Inspected(DeleteRecoveryInspection),
+    Settled(DeleteRecoveryInspection),
+    AppliedVersion,
+    AppliedVersions(Vec<Option<u32>>),
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -1872,6 +2358,8 @@ mod tests {
             undo_delete: false,
             old_data_dir: Some(Uuid::new_v4()),
             expected_delete_marker: None,
+            delete_recovery_bucket_incarnation: None,
+            recoverable_delete: false,
         };
 
         assert!(opts.recursive);
@@ -2296,3 +2784,223 @@ mod tests {
         }
     }
 }
+
+#[cfg(test)]
+mod delete_recovery_timeout_tests {
+    use super::*;
+    #[test]
+    fn recovery_timeout_defaults_and_validates_range() {
+        assert_eq!(
+            parse_delete_recovery_timeout(None).expect("default timeout"),
+            std::time::Duration::from_secs(900)
+        );
+        for seconds in ["30", "900", "86400"] {
+            assert!(parse_delete_recovery_timeout(Some(seconds)).is_ok());
+        }
+        for value in ["", "invalid", "0", "2", "29", "86401", "-1", "18446744073709551616"] {
+            assert!(parse_delete_recovery_timeout(Some(value)).is_err());
+        }
+    }
+}
+
+#[cfg(test)]
+mod delete_recovery_wire_limit_tests {
+    use super::*;
+
+    #[test]
+    fn boxed_apply_version_preserves_existing_wire_payload() {
+        #[derive(Serialize)]
+        enum PriorOperation<'a> {
+            ApplyVersion {
+                object: &'a str,
+                file_info: &'a FileInfo,
+                force_del_marker: bool,
+                opts: &'a DeleteOptions,
+            },
+        }
+        let file_info = FileInfo {
+            name: "object".into(),
+            version_id: Some(Uuid::new_v4()),
+            metadata: std::collections::HashMap::from([("metadata".into(), "value".into())]),
+            ..Default::default()
+        };
+        let opts = DeleteOptions {
+            old_data_dir: Some(Uuid::new_v4()),
+            recoverable_delete: true,
+            delete_recovery_bucket_incarnation: Some(Uuid::new_v4()),
+            ..Default::default()
+        };
+        let prior = PriorOperation::ApplyVersion {
+            object: "object",
+            file_info: &file_info,
+            force_del_marker: true,
+            opts: &opts,
+        };
+        let encoded = rmp_serde::to_vec_named(&prior).expect("encode the previous unboxed request shape");
+        let operation = DeleteRecoveryRpcOperation::ApplyVersion {
+            object: "object".into(),
+            file_info: Box::new(file_info.clone()),
+            force_del_marker: true,
+            opts: opts.clone(),
+        };
+        assert_eq!(rmp_serde::to_vec_named(&operation).expect("encode boxed request"), encoded);
+        assert_eq!(
+            serde_json::to_value(&operation).expect("boxed request JSON"),
+            serde_json::to_value(prior).expect("previous request JSON")
+        );
+        let decoded: DeleteRecoveryRpcOperation =
+            rustfs_protos::decode_delete_recovery_payload(&encoded).expect("decode the previous payload");
+        assert_eq!(rmp_serde::to_vec_named(&decoded).expect("re-encode decoded prior request"), encoded);
+    }
+    #[test]
+    fn adoption_and_inspection_reply_support_large_version_journals() {
+        let transaction = Uuid::new_v4();
+        let request = FileInfo {
+            metadata: std::collections::HashMap::from([("metadata".into(), "x".repeat(2048))]),
+            ..Default::default()
+        };
+        let journal = DeleteRecoveryJournal {
+            protocol_version: DELETE_RECOVERY_PROTOCOL_VERSION,
+            volume: "bucket".into(),
+            object: "object".into(),
+            transaction,
+            bucket_incarnation: None,
+            original_digest: None,
+            target_digest: None,
+            data_dirs: Vec::new(),
+            deleted_versions: Vec::new(),
+            requests: vec![request; 1000],
+            original_versions: Vec::new(),
+            predecessors: Vec::new(),
+        };
+        let operation = DeleteRecoveryRpcOperation::Settle {
+            object: "object".into(),
+            transaction,
+            expected_fingerprint: [0; 32],
+            action: DeleteRecoveryAction::AdoptCommit {
+                authority: Box::new(journal.clone()),
+            },
+        };
+        let encoded = rmp_serde::to_vec_named(&operation).expect("encode large adoption");
+        assert!(encoded.len() > rustfs_protos::DELETE_RECOVERY_MAX_CONTROL_PAYLOAD_BYTES);
+        assert!(encoded.len() < operation.max_wire_payload_bytes());
+        let decoded: DeleteRecoveryRpcOperation =
+            rustfs_protos::decode_delete_recovery_payload(&encoded).expect("large adoption can decode");
+        assert_eq!(decoded.max_wire_payload_bytes(), rustfs_protos::DELETE_RECOVERY_MAX_PAYLOAD_BYTES);
+        let reply = DeleteRecoveryRpcReply::Inspected(DeleteRecoveryInspection {
+            protocol_version: DELETE_RECOVERY_PROTOCOL_VERSION,
+            id: DeleteTransactionId {
+                object: "object".into(),
+                transaction,
+            },
+            state: DeleteRecoveryState::QuorumCommitted,
+            journal: Some(journal),
+            current_digest: None,
+            current_versions: Vec::new(),
+            backup_digest: None,
+            rollback_data_complete: false,
+            commit_data_safe: true,
+            explicit_delete_safe: false,
+            fingerprint: [0; 32],
+        });
+        let encoded = rmp_serde::to_vec_named(&reply).expect("encode large inspection");
+        assert!(encoded.len() > rustfs_protos::DELETE_RECOVERY_MAX_CONTROL_PAYLOAD_BYTES);
+        assert!(rustfs_protos::decode_delete_recovery_payload::<DeleteRecoveryRpcReply>(&encoded).is_ok());
+        let inspect = DeleteRecoveryRpcOperation::Inspect {
+            object: "object".into(),
+            transaction,
+        };
+        assert_eq!(inspect.max_wire_payload_bytes(), rustfs_protos::DELETE_RECOVERY_MAX_CONTROL_PAYLOAD_BYTES);
+    }
+}
+
+#[cfg(test)]
+mod delete_recovery_adoption_tests {
+    use super::*;
+
+    #[test]
+    fn source_matching_preserves_non_null_absence_and_rejects_foreign_or_missing_null() {
+        let id = Uuid::new_v4();
+        let source = DeleteRecoveryVersionIdentity {
+            version_id: Some(id),
+            mod_time: None,
+            data_dir: None,
+            deleted: false,
+            metadata_digest: [1; 32],
+        };
+        let mut journal = DeleteRecoveryJournal {
+            protocol_version: DELETE_RECOVERY_PROTOCOL_VERSION,
+            volume: "bucket".into(),
+            object: "object".into(),
+            transaction: Uuid::new_v4(),
+            bucket_incarnation: None,
+            original_digest: None,
+            target_digest: None,
+            data_dirs: Vec::new(),
+            deleted_versions: vec![id],
+            requests: vec![FileInfo {
+                version_id: Some(id),
+                ..Default::default()
+            }],
+            original_versions: vec![source.clone()],
+            predecessors: Vec::new(),
+        };
+        assert!(journal.matches_adoption_source(&[]), "certified non-null removal can already be absent");
+        assert!(journal.matches_adoption_source(std::slice::from_ref(&source)));
+        let missing = Uuid::new_v4();
+        journal.requests.push(FileInfo {
+            version_id: Some(missing),
+            ..Default::default()
+        });
+        journal.original_digest = Some([3; 32]);
+        assert!(
+            journal.matches_prepared_authority(&journal),
+            "an explicit UUID absent from both prepared sources remains a no-op with original metadata"
+        );
+        assert!(journal.matches_adoption_source(&[]), "both non-null versions can remain absent");
+        assert!(
+            journal.matches_adoption_source(std::slice::from_ref(&source)),
+            "a missing non-null version in the batch remains a no-op"
+        );
+        let mut unexpected = source.clone();
+        unexpected.version_id = Some(missing);
+        let mut foreign_preparation = journal.clone();
+        foreign_preparation.original_versions.push(unexpected.clone());
+        assert!(
+            !journal.matches_prepared_authority(&foreign_preparation)
+                && !foreign_preparation.matches_prepared_authority(&journal),
+            "absence from only one prepared source cannot establish a generation"
+        );
+        assert!(
+            !journal.matches_adoption_source(&[source.clone(), unexpected]),
+            "a version absent from the authority cannot be deleted locally"
+        );
+        for version_id in [None, Some(Uuid::nil())] {
+            journal.requests.last_mut().expect("missing-version request").version_id = version_id;
+            assert!(
+                !journal.matches_prepared_authority(&journal),
+                "a missing null version with original metadata cannot establish its generation"
+            );
+            assert!(
+                !journal.matches_adoption_source(std::slice::from_ref(&source)),
+                "a missing null version cannot establish its generation"
+            );
+        }
+        journal.requests.pop();
+        let mut foreign = source.clone();
+        foreign.metadata_digest = [2; 32];
+        assert!(!journal.matches_adoption_source(std::slice::from_ref(&foreign)));
+        journal.original_versions.push(foreign.clone());
+        assert!(
+            journal.matches_adoption_source(&[source.clone(), foreign.clone()]),
+            "retain original first-match semantics"
+        );
+        assert!(!journal.matches_adoption_source(&[foreign, source]));
+        journal.requests[0].version_id = None;
+        journal.original_versions[0].version_id = None;
+        assert!(!journal.matches_adoption_source(&[]), "null absence does not establish its generation");
+        assert!(journal.matches_adoption_source(std::slice::from_ref(&journal.original_versions[0])));
+        journal.requests.clear();
+        assert!(!journal.matches_adoption_source(&journal.original_versions));
+    }
+}

crates/ecstore/src/disk/os.rs

@@ -21,7 +21,7 @@ use futures::TryStreamExt;
 use parking_lot::Mutex;
 use rustfs_utils::path::SLASH_SEPARATOR;
 use std::{
-    collections::{HashMap, VecDeque},
+    collections::{HashMap, HashSet, VecDeque},
     io,
     path::{Component, Path, PathBuf},
     sync::{Arc, LazyLock, Weak},
@@ -276,6 +276,14 @@ pub(crate) mod prepared_publication_test_hooks {
         Rollback,
         #[cfg(test)]
         DirFsync,
+        #[cfg(test)]
+        CreateDirectory,
+        #[cfg(test)]
+        NativeRootIdentity,
+        #[cfg(all(test, target_os = "linux"))]
+        DirectWriteOpen,
+        #[cfg(all(test, target_os = "linux"))]
+        BeforeDataUsageLayout,
     }
 
     type Hook = Box<dyn FnOnce() + Send>;
@@ -1381,6 +1389,226 @@ fn fsync_spawn_blocking<T: Send + 'static>(f: impl FnOnce() -> T + Send + 'stati
 }
 static DISK_VOLUME_MUTATION_LOCKS: LazyLock<Mutex<HashMap<PathBuf, Weak<RwLock<()>>>>> =
     LazyLock::new(|| Mutex::new(HashMap::new()));
+
+#[cfg(windows)]
+type NativeRootIdentity = (u64, [u8; 16]);
+#[cfg(not(windows))]
+type NativeRootIdentity = (u64, u64);
+
+// Publication history outlives disk handles, cleanup, and metadata snapshots.
+// Reusing a pathname or descriptor for another physical root is not new proof.
+#[derive(Debug, Default)]
+struct NativePublicationHistory {
+    roots: HashMap<NativeRootIdentity, NativeRootHistory>,
+    aliases: HashMap<PathBuf, HashSet<NativeRootIdentity>>,
+}
+
+#[derive(Debug, Default)]
+struct NativeRootHistory {
+    unknown: bool,
+    started: HashSet<String>,
+}
+
+static NATIVE_PUBLICATION_HISTORY: LazyLock<Mutex<NativePublicationHistory>> =
+    LazyLock::new(|| Mutex::new(NativePublicationHistory::default()));
+
+#[derive(Clone, Debug)]
+pub(crate) struct NativePublicationRegistration {
+    identity: NativeRootIdentity,
+    root: PathBuf,
+    io_root: PathBuf,
+}
+
+/// Opaque, process-local observation. Unsupported disks cannot construct it.
+#[derive(Clone, Debug)]
+pub struct NativeBucketCreationWitness {
+    registration: NativePublicationRegistration,
+    backend: Arc<dyn super::local::LocalIoBackend>,
+    bucket: String,
+    disk_id: uuid::Uuid,
+}
+
+fn native_root_identity(path: &Path) -> Option<NativeRootIdentity> {
+    #[cfg(unix)]
+    {
+        use std::os::unix::fs::MetadataExt;
+        #[cfg(test)]
+        prepared_publication_test_hooks::run(prepared_publication_test_hooks::Stage::NativeRootIdentity, path);
+        let metadata = std::fs::metadata(path).ok()?;
+        metadata.is_dir().then(|| (metadata.dev(), metadata.ino()))
+    }
+    #[cfg(windows)]
+    {
+        // Resolve and validate the same directory anchor used for publication;
+        // keep its volume and complete 128-bit file ID in the history key.
+        let (_, directory) = open_windows_publication_root(path).ok()?;
+        windows_file_identity(directory.handle.as_ref()).ok()
+    }
+    #[cfg(all(not(unix), not(windows)))]
+    {
+        let _ = path;
+        None
+    }
+}
+
+pub(crate) fn register_native_publication_root(root: &Path, io_root: &Path) -> Option<NativePublicationRegistration> {
+    let identity = native_root_identity(root)?;
+    if native_root_identity(io_root) != Some(identity) {
+        return None;
+    }
+    let mut history = NATIVE_PUBLICATION_HISTORY.lock();
+    history.roots.entry(identity).or_default();
+    for alias in [root, io_root] {
+        let alias: PathBuf = alias.components().collect();
+        let previous = history.aliases.entry(alias).or_default();
+        let collisions: Vec<_> = previous.iter().copied().filter(|old| *old != identity).collect();
+        previous.insert(identity);
+        if !collisions.is_empty() {
+            history.roots.get_mut(&identity)?.unknown = true;
+            for old in collisions {
+                history.roots.get_mut(&old)?.unknown = true;
+            }
+        }
+    }
+    Some(NativePublicationRegistration {
+        identity,
+        root: root.to_path_buf(),
+        io_root: io_root.to_path_buf(),
+    })
+}
+
+/// Record before queueing filesystem work. Cancellation never removes Started.
+pub(crate) fn record_native_publication(path: &Path) {
+    let aliases: Vec<_> = {
+        let history = NATIVE_PUBLICATION_HISTORY.lock();
+        path.ancestors()
+            .filter(|alias| history.aliases.contains_key(*alias))
+            .map(Path::to_path_buf)
+            .collect()
+    };
+    // Physical lookups must never hold the process-wide publication mutex.
+    let observations: Vec<_> = aliases
+        .into_iter()
+        .filter_map(|alias| {
+            let relative = path.strip_prefix(&alias).ok()?;
+            let mut components = relative.components().filter(|part| !matches!(part, Component::CurDir));
+            let first = components.next()?;
+            let bucket = match first {
+                Component::Normal(bucket) if components.all(|part| matches!(part, Component::Normal(_))) => {
+                    bucket.to_str().map(str::to_owned)
+                }
+                _ => None,
+            };
+            let physical = native_root_identity(&alias);
+            Some((alias, physical, bucket))
+        })
+        .collect();
+    let mut history = NATIVE_PUBLICATION_HISTORY.lock();
+    for (alias, physical, bucket) in observations {
+        // Aliases only accumulate identities. Include registration concurrent
+        // with the stat, rather than using a stale captured identity list.
+        let identities = history.aliases.get(&alias).cloned().unwrap_or_default();
+        if physical.is_none() || identities.iter().any(|identity| Some(*identity) != physical) {
+            for identity in identities {
+                history.roots.entry(identity).or_default().unknown = true;
+            }
+            if let Some(identity) = physical {
+                history.roots.entry(identity).or_default().unknown = true;
+            }
+        } else if let Some(identity) = physical {
+            let root = history.roots.entry(identity).or_default();
+            match bucket {
+                Some(bucket) => {
+                    root.started.insert(bucket);
+                }
+                None => root.unknown = true,
+            }
+        }
+    }
+}
+
+impl NativePublicationRegistration {
+    pub(crate) fn invalidate(&self) {
+        if let Some(root) = NATIVE_PUBLICATION_HISTORY.lock().roots.get_mut(&self.identity) {
+            root.unknown = true;
+        }
+    }
+
+    pub(crate) fn witness(
+        &self,
+        bucket: &str,
+        disk_id: uuid::Uuid,
+        backend: Arc<dyn super::local::LocalIoBackend>,
+    ) -> Option<NativeBucketCreationWitness> {
+        if disk_id.is_nil()
+            || !matches!(Path::new(bucket).components().next(), Some(Component::Normal(_)))
+            || Path::new(bucket).components().count() != 1
+        {
+            return None;
+        }
+        let witness = NativeBucketCreationWitness {
+            registration: self.clone(),
+            backend,
+            bucket: bucket.to_owned(),
+            disk_id,
+        };
+        validate_native_creation_witnesses(std::slice::from_ref(&witness)).then_some(witness)
+    }
+}
+
+impl NativeBucketCreationWitness {
+    pub(crate) fn matches(&self, other: &Self) -> bool {
+        self.registration.identity == other.registration.identity
+            && Arc::ptr_eq(&self.backend, &other.backend)
+            && self.disk_id == other.disk_id
+            && self.bucket == other.bucket
+    }
+
+    fn physical_root_is_current(&self) -> bool {
+        let root = native_root_identity(&self.registration.root);
+        let io_root = native_root_identity(&self.registration.io_root);
+        if root == Some(self.registration.identity) && io_root == Some(self.registration.identity) {
+            return true;
+        }
+        let mut history = NATIVE_PUBLICATION_HISTORY.lock();
+        history.roots.entry(self.registration.identity).or_default().unknown = true;
+        for identity in [root, io_root].into_iter().flatten() {
+            history.roots.entry(identity).or_default().unknown = true;
+        }
+        false
+    }
+
+    fn valid_in(&self, history: &NativePublicationHistory) -> bool {
+        history
+            .roots
+            .get(&self.registration.identity)
+            .is_some_and(|root| !root.unknown && !root.started.contains(&self.bucket))
+    }
+}
+
+pub(crate) fn validate_native_creation_witnesses(witnesses: &[NativeBucketCreationWitness]) -> bool {
+    if witnesses.is_empty() || !witnesses.iter().all(NativeBucketCreationWitness::physical_root_is_current) {
+        return false;
+    }
+    let history = NATIVE_PUBLICATION_HISTORY.lock();
+    witnesses.iter().all(|witness| witness.valid_in(&history))
+}
+
+pub(crate) fn consume_native_creation_witnesses(witnesses: &[NativeBucketCreationWitness]) -> bool {
+    if witnesses.is_empty() || !witnesses.iter().all(NativeBucketCreationWitness::physical_root_is_current) {
+        return false;
+    }
+    let mut history = NATIVE_PUBLICATION_HISTORY.lock();
+    if !witnesses.iter().all(|witness| witness.valid_in(&history)) {
+        return false;
+    }
+    for witness in witnesses {
+        if let Some(root) = history.roots.get_mut(&witness.registration.identity) {
+            root.started.insert(witness.bucket.clone());
+        }
+    }
+    true
+}
 type NamespaceMutationLock = AsyncMutex<()>;
 type NamespaceMutationLockRegistry = HashMap<PathBuf, Weak<NamespaceMutationLock>>;
 static DISK_NAMESPACE_MUTATION_LOCKS: LazyLock<Mutex<NamespaceMutationLockRegistry>> =
@@ -2083,6 +2311,7 @@ pub(in crate::disk) async fn rename_with_namespace_owner(
     dst: &Path,
     namespace_owner: Option<Arc<dyn Send + Sync>>,
 ) -> io::Result<()> {
+    record_native_publication(dst);
     if namespace_owner.is_none() {
         return tokio::fs::rename(src, dst).await;
     }
@@ -2104,12 +2333,19 @@ pub(in crate::disk) async fn create_dir_all_with_namespace_owner(
     path: &Path,
     namespace_owner: Option<Arc<dyn Send + Sync>>,
 ) -> io::Result<()> {
+    record_native_publication(path);
     if namespace_owner.is_none() {
         return tokio::fs::create_dir_all(path).await;
     }
     let path = path.to_path_buf();
     let lease = acquire_namespace_mutation_lease_with_owner(&path, namespace_owner).await;
-    run_blocking_namespace_operation(lease, move || std::fs::create_dir_all(path)).await
+    run_blocking_namespace_operation(lease, move || {
+        #[cfg(all(test, not(windows)))]
+        prepared_publication_test_hooks::run(prepared_publication_test_hooks::Stage::CreateDirectory, &path);
+        record_native_publication(&path);
+        std::fs::create_dir_all(path)
+    })
+    .await
 }
 
 #[tracing::instrument(name = "rename_all", level = "debug", skip_all)]
@@ -2120,6 +2356,7 @@ pub(crate) async fn rename_all_with_owner(
     publication_root: &PublicationRoot,
     namespace_owner: Option<Arc<dyn Send + Sync>>,
 ) -> Result<()> {
+    record_native_publication(dst_file_path.as_ref());
     let lease = acquire_namespace_mutation_lease_with_owner(dst_file_path.as_ref(), namespace_owner).await;
     rename_all_with_lease(src_file_path, dst_file_path, base_dir, publication_root, lease).await
 }
@@ -2131,6 +2368,7 @@ pub(crate) async fn rename_all_with_lease(
     publication_root: &PublicationRoot,
     lease: Arc<NamespaceMutationLease>,
 ) -> Result<()> {
+    record_native_publication(dst_file_path.as_ref());
     reliable_rename_inner_with_lease(
         src_file_path.as_ref().to_path_buf(),
         dst_file_path.as_ref().to_path_buf(),
@@ -2155,6 +2393,7 @@ pub(crate) async fn rename_reconciled_metadata(
     owner: Option<Arc<dyn Send + Sync>>,
     authority: Arc<crate::bucket::lifecycle::legacy_transition_state_reconcile::TransitionStateReconcileAuthority>,
 ) -> Result<()> {
+    record_native_publication(&destination);
     let lease = acquire_namespace_mutation_lease_with_owner(&destination, owner).await;
     run_blocking_namespace_operation(lease, move || {
         let preparation = prepare_rename_with_retry(&source, &destination, &base_dir, &publication_root)?;
@@ -2399,6 +2638,7 @@ pub(crate) async fn rename_all_ignore_missing_source_with_owner(
     publication_root: &PublicationRoot,
     namespace_owner: Option<Arc<dyn Send + Sync>>,
 ) -> Result<()> {
+    record_native_publication(dst_file_path.as_ref());
     let src_file_path = src_file_path.as_ref();
     let lease = acquire_namespace_mutation_lease_with_owner(dst_file_path.as_ref(), namespace_owner).await;
     match reliable_rename_inner_with_lease(
@@ -2453,6 +2693,7 @@ async fn reliable_rename_inner(
     publication_root: &PublicationRoot,
     warn_on_missing_source: bool,
 ) -> io::Result<()> {
+    record_native_publication(dst_file_path.as_ref());
     let src_file_path = src_file_path.as_ref().to_path_buf();
     let dst_file_path = dst_file_path.as_ref().to_path_buf();
     let base_dir = base_dir.as_ref().to_path_buf();
@@ -2476,6 +2717,7 @@ async fn reliable_rename_inner_with_lease(
     warn_on_missing_source: bool,
     lease: Arc<NamespaceMutationLease>,
 ) -> io::Result<()> {
+    record_native_publication(&dst_file_path);
     let operation = {
         let src_file_path = src_file_path.clone();
         let dst_file_path = dst_file_path.clone();
@@ -2878,6 +3120,7 @@ fn rename_into_existing_parent(
     dst_file_path: &Path,
     parent_guard: Option<&ExistingBaseDirectoryGuard>,
 ) -> io::Result<()> {
+    record_native_publication(dst_file_path);
     use rustix::fs::{Mode, OFlags, open, renameat};
 
     let Some(parent_guard) = parent_guard else {
@@ -2926,6 +3169,7 @@ fn rename_into_existing_parent(
     parent_guard: Option<&ExistingBaseDirectoryGuard>,
     source: &winapi_util::Handle,
 ) -> io::Result<()> {
+    record_native_publication(dst_file_path);
     use std::{
         mem::size_of,
         os::windows::{ffi::OsStrExt, io::AsRawHandle},
@@ -4214,6 +4458,7 @@ pub(crate) fn mkdir_all_below_existing_base_std(
     base_dir: &Path,
     publication_root: &PublicationRoot,
 ) -> io::Result<ExistingBaseDirectoryGuard> {
+    record_native_publication(dir_path);
     let relative = dir_path
         .strip_prefix(base_dir)
         .map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "rename destination must remain below its base directory"))?;
@@ -5718,6 +5963,77 @@ mod tests {
         assert_eq!(err.raw_os_error(), Some(disk_full));
     }
 
+    #[cfg(windows)]
+    #[test]
+    fn windows_native_root_identity_matches_directory_handles() {
+        let temp = tempdir().expect("create native identity fixture");
+        let first = temp.path().join("first");
+        let second = temp.path().join("second");
+        std::fs::create_dir(&first).expect("create first root");
+        std::fs::create_dir(&second).expect("create second root");
+        let (_, first_anchor) = open_windows_publication_root(&first).expect("open first directory anchor");
+        let (_, second_anchor) = open_windows_publication_root(&second).expect("open second directory anchor");
+        let first_identity = windows_file_identity(first_anchor.handle.as_ref()).expect("query full first identity");
+        let second_identity = windows_file_identity(second_anchor.handle.as_ref()).expect("query full second identity");
+
+        assert_eq!(native_root_identity(&first), Some(first_identity));
+        assert_eq!(native_root_identity(&first.join(".")), Some(first_identity));
+        assert_eq!(native_root_identity(&second), Some(second_identity));
+        assert_ne!(first_identity, second_identity, "distinct physical roots must have distinct identities");
+    }
+
+    #[cfg(windows)]
+    #[tokio::test]
+    async fn windows_native_creation_witness_retains_started_history() {
+        let temp = tempdir().expect("create native witness fixture");
+        let root = std::fs::canonicalize(temp.path()).expect("canonical native root");
+        let _publication_root = PublicationRoot::new(&root).expect("retain native directory anchor");
+        let registration = register_native_publication_root(&root, &root.join(".")).expect("register same physical root");
+        let backend: Arc<dyn super::super::local::LocalIoBackend> = Arc::new(super::super::local::StdBackend::new(root.clone()));
+        let disk_id = uuid::Uuid::new_v4();
+        let witness = registration
+            .witness("published", disk_id, Arc::clone(&backend))
+            .expect("fresh native witness");
+        let bucket = root.join("published");
+
+        super::super::fs::mkdir(&bucket)
+            .await
+            .expect("publish through the actual native entry");
+        assert!(bucket.is_dir(), "the production entry must create the directory");
+        assert!(!validate_native_creation_witnesses(std::slice::from_ref(&witness)));
+        std::fs::remove_dir(&bucket).expect("remove published directory");
+        assert!(registration.witness("published", disk_id, Arc::clone(&backend)).is_none());
+        let reconnected = register_native_publication_root(&root, &root).expect("reconnect same physical root");
+        assert!(reconnected.witness("published", disk_id, Arc::clone(&backend)).is_none());
+
+        let unstarted = reconnected
+            .witness("unstarted", disk_id, Arc::clone(&backend))
+            .expect("untouched bucket keeps its witness");
+        assert!(consume_native_creation_witnesses(std::slice::from_ref(&unstarted)));
+        assert!(!validate_native_creation_witnesses(std::slice::from_ref(&unstarted)));
+        assert!(reconnected.witness("unstarted", disk_id, backend).is_none());
+    }
+
+    #[cfg(windows)]
+    #[test]
+    fn windows_native_creation_witness_rejects_unknown_roots() {
+        let temp = tempdir().expect("create unknown identity fixture");
+        let root = temp.path().join("root");
+        let other = temp.path().join("other");
+        let file = temp.path().join("file");
+        std::fs::create_dir(&root).expect("create native root");
+        std::fs::create_dir(&other).expect("create distinct native root");
+        std::fs::write(&file, b"not a directory").expect("create regular file");
+
+        assert!(native_root_identity(&temp.path().join("missing")).is_none());
+        assert!(native_root_identity(&file).is_none());
+        assert!(register_native_publication_root(&root, &other).is_none());
+        let registration = register_native_publication_root(&root, &root).expect("register actual native root");
+        let backend: Arc<dyn super::super::local::LocalIoBackend> = Arc::new(super::super::local::StdBackend::new(root));
+        registration.invalidate();
+        assert!(registration.witness("unstarted", uuid::Uuid::new_v4(), backend).is_none());
+    }
+
     #[cfg(windows)]
     #[test]
     fn windows_rename_all_legacy_file_identity_distinguishes_sources() {
@@ -7737,3 +8053,272 @@ mod tests {
         assert_eq!(err.kind(), io::ErrorKind::NotFound);
     }
 }
+
+#[cfg(all(test, unix))]
+mod native_creation_history_tests {
+    use super::*;
+
+    struct NativeFixture {
+        _temp: tempfile::TempDir,
+        root: PathBuf,
+        registration: NativePublicationRegistration,
+        backend: Arc<dyn super::super::local::LocalIoBackend>,
+        disk_id: uuid::Uuid,
+    }
+
+    impl NativeFixture {
+        fn new() -> Self {
+            let temp = tempfile::tempdir().expect("native root");
+            let root = std::fs::canonicalize(temp.path()).expect("canonical root");
+            let registration = register_native_publication_root(&root, &root).expect("native registration");
+            let backend = Arc::new(super::super::local::StdBackend::new(root.clone()));
+            Self {
+                _temp: temp,
+                root,
+                registration,
+                backend,
+                disk_id: uuid::Uuid::new_v4(),
+            }
+        }
+
+        fn witness(&self, bucket: &str) -> Option<NativeBucketCreationWitness> {
+            self.registration.witness(bucket, self.disk_id, Arc::clone(&self.backend))
+        }
+    }
+
+    #[tokio::test]
+    async fn every_native_directory_publication_entry_invalidates_retry() {
+        let fixture = NativeFixture::new();
+        for operation in [
+            "recursive",
+            "single",
+            "open",
+            "rename",
+            "rename_std",
+            "fallback",
+            "owned_mkdir",
+            "owned_rename",
+            "handle_relative",
+        ] {
+            let bucket = format!("native-{operation}-{}", uuid::Uuid::new_v4());
+            let path = fixture.root.join(&bucket);
+            let witness = fixture.witness(&bucket).expect("fresh native witness");
+            match operation {
+                "recursive" => super::super::fs::make_dir_all(path.join("object/child"))
+                    .await
+                    .expect("recursive mkdir"),
+                "single" => super::super::fs::mkdir(&path).await.expect("single mkdir"),
+                "open" => {
+                    let file = super::super::fs::open_file(&path, super::super::fs::O_CREATE | super::super::fs::O_WRONLY)
+                        .await
+                        .expect("create file");
+                    drop(file);
+                }
+                "rename" | "rename_std" | "owned_rename" => {
+                    let source = fixture.root.join(format!("source-{}", uuid::Uuid::new_v4()));
+                    std::fs::create_dir(&source).expect("rename source");
+                    match operation {
+                        "rename" => super::super::fs::rename(&source, &path).await.expect("async rename"),
+                        "rename_std" => super::super::fs::rename_std(&source, &path).expect("sync rename"),
+                        _ => rename_with_namespace_owner(&source, &path, Some(Arc::new(())))
+                            .await
+                            .expect("owned rename"),
+                    }
+                }
+                "fallback" => make_dir_all(path.join("object/child"), &path)
+                    .await
+                    .expect("implicit volume fallback"),
+                "owned_mkdir" => create_dir_all_with_namespace_owner(&path.join("child"), Some(Arc::new(())))
+                    .await
+                    .expect("owned recursive mkdir"),
+                "handle_relative" => {
+                    let publication_root = PublicationRoot::new(&fixture.root).expect("publication root");
+                    let guard = mkdir_all_below_existing_base_std(&path.join("child"), &fixture.root, &publication_root)
+                        .expect("first-level handle-relative mkdir");
+                    drop(guard);
+                }
+                _ => unreachable!(),
+            }
+            assert!(
+                !validate_native_creation_witnesses(std::slice::from_ref(&witness)),
+                "{operation}: old proof remains live"
+            );
+            if path.is_dir() {
+                std::fs::remove_dir_all(&path).expect("remove published directory");
+            } else {
+                std::fs::remove_file(&path).expect("remove published file");
+            }
+            assert!(fixture.witness(&bucket).is_none(), "{operation}: removal must not regrant proof");
+        }
+    }
+
+    #[tokio::test]
+    async fn cancelled_namespace_waiter_cannot_restore_native_proof() {
+        let fixture = NativeFixture::new();
+        let bucket = format!("native-cancel-{}", uuid::Uuid::new_v4());
+        let path = fixture.root.join(&bucket);
+        let witness = fixture.witness(&bucket).expect("fresh witness");
+        let lease = acquire_namespace_mutation_lease(&path).await;
+        let mut attempt = Box::pin(create_dir_all_with_namespace_owner(&path, Some(Arc::new(()))));
+        assert!(matches!(futures::poll!(&mut attempt), std::task::Poll::Pending));
+        assert!(
+            !validate_native_creation_witnesses(std::slice::from_ref(&witness)),
+            "Started must precede admission wait"
+        );
+        assert!(!path.exists(), "the namespace wait must still precede the syscall");
+        drop(attempt);
+        drop(lease);
+        assert!(fixture.witness(&bucket).is_none(), "cancellation cannot undo an admitted attempt");
+    }
+
+    #[tokio::test]
+    async fn queued_mkdir_cancellation_retains_lease_and_consumed_history() {
+        use futures::FutureExt;
+        use std::sync::mpsc;
+
+        let fixture = NativeFixture::new();
+        let bucket = format!("native-queued-cancel-{}", uuid::Uuid::new_v4());
+        let path = fixture.root.join(&bucket);
+        let witness = fixture.witness(&bucket).expect("fresh witness");
+        let (entered_tx, entered_rx) = mpsc::channel();
+        let (release_tx, release_rx) = mpsc::channel();
+        let _hook = prepared_publication_test_hooks::install_at(
+            prepared_publication_test_hooks::Stage::CreateDirectory,
+            &path,
+            move || {
+                entered_tx.send(()).expect("signal real executor entry");
+                let _ = release_rx.recv();
+            },
+        );
+        let operation_path = path.clone();
+        let operation =
+            tokio::spawn(async move { create_dir_all_with_namespace_owner(&operation_path, Some(Arc::new(()))).await });
+        tokio::task::spawn_blocking(move || entered_rx.recv_timeout(std::time::Duration::from_secs(30)))
+            .await
+            .expect("entry waiter")
+            .expect("the real blocking executor must enter");
+        operation.abort();
+        assert!(operation.await.expect_err("cancel the async waiter").is_cancelled());
+        assert!(
+            !validate_native_creation_witnesses(std::slice::from_ref(&witness)),
+            "queued publication is permanently Started"
+        );
+        assert!(
+            acquire_namespace_mutation_lease(&path).now_or_never().is_none(),
+            "the actual blocked executor must still own the namespace lease"
+        );
+        release_tx.send(()).expect("release the syscall");
+        let drained = tokio::time::timeout(std::time::Duration::from_secs(30), acquire_namespace_mutation_lease(&path))
+            .await
+            .expect("the lease must drain with the syscall");
+        drop(drained);
+        assert!(path.is_dir(), "the cancelled waiter cannot discard the already queued syscall");
+        std::fs::remove_dir_all(&path).expect("remove the published directory");
+        assert!(fixture.witness(&bucket).is_none(), "drain and removal cannot restore proof");
+    }
+
+    #[tokio::test]
+    async fn publication_detects_retargeted_physical_alias_without_registration() {
+        let source = NativeFixture::new();
+        let destination = NativeFixture::new();
+        let bucket = format!("native-retarget-{}", uuid::Uuid::new_v4());
+        let witness = destination.witness(&bucket).expect("destination witness");
+        let retired = source.root.with_extension("retired");
+        std::fs::rename(&source.root, &retired).expect("move the original physical root");
+        std::os::unix::fs::symlink(&destination.root, &source.root).expect("retarget the registered alias");
+        super::super::fs::mkdir(source.root.join(&bucket))
+            .await
+            .expect("publish through the changed alias");
+        assert!(
+            !validate_native_creation_witnesses(std::slice::from_ref(&witness)),
+            "publication-time alias drift must invalidate the actual destination root"
+        );
+        std::fs::remove_dir(destination.root.join(&bucket)).expect("remove the published bucket");
+        assert!(destination.witness(&bucket).is_none(), "removal must not undo alias uncertainty");
+        std::fs::remove_file(&source.root).expect("remove the symlink");
+        std::fs::rename(retired, &source.root).expect("restore the test root");
+    }
+
+    #[test]
+    fn blocked_physical_identity_lookup_does_not_block_other_publication() {
+        use std::sync::mpsc;
+        let stalled = NativeFixture::new();
+        let healthy = NativeFixture::new();
+        let witness = stalled.witness("unpublished").expect("stalled root witness");
+        let (entered_tx, entered_rx) = mpsc::channel();
+        let (release_tx, release_rx) = mpsc::channel();
+        let _hook = prepared_publication_test_hooks::install_at(
+            prepared_publication_test_hooks::Stage::NativeRootIdentity,
+            &stalled.root,
+            move || {
+                entered_tx.send(()).expect("signal physical lookup");
+                let _ = release_rx.recv();
+            },
+        );
+        let validator = std::thread::spawn(move || validate_native_creation_witnesses(&[witness]));
+        entered_rx
+            .recv_timeout(std::time::Duration::from_secs(30))
+            .expect("enter the actual identity lookup");
+        let (published_tx, published_rx) = mpsc::channel();
+        let path = healthy.root.join("published");
+        let publisher = std::thread::spawn(move || {
+            record_native_publication(&path);
+            published_tx.send(()).expect("signal independent publication");
+        });
+        let published = published_rx.recv_timeout(std::time::Duration::from_secs(5));
+        release_tx.send(()).expect("release the identity lookup");
+        validator.join().expect("identity lookup thread");
+        publisher.join().expect("publication thread");
+        assert!(
+            published.is_ok(),
+            "a slow physical lookup must not retain the process-wide publication mutex"
+        );
+    }
+
+    #[test]
+    fn native_consume_is_atomic_and_history_survives_reconnect() {
+        let fixture = NativeFixture::new();
+        let first = format!("native-first-{}", uuid::Uuid::new_v4());
+        let second = format!("native-second-{}", uuid::Uuid::new_v4());
+        let first_witness = fixture.witness(&first).expect("first witness");
+        let second_witness = fixture.witness(&second).expect("second witness");
+        record_native_publication(&fixture.root.join(&second));
+        assert!(!consume_native_creation_witnesses(&[first_witness.clone(), second_witness]));
+        assert!(
+            validate_native_creation_witnesses(std::slice::from_ref(&first_witness)),
+            "failed cohort consume must be atomic"
+        );
+        assert!(consume_native_creation_witnesses(std::slice::from_ref(&first_witness)));
+        assert!(!validate_native_creation_witnesses(std::slice::from_ref(&first_witness)));
+        let reconnected = register_native_publication_root(&fixture.root, &fixture.root).expect("reconnected registration");
+        let backend: Arc<dyn super::super::local::LocalIoBackend> =
+            Arc::new(super::super::local::StdBackend::new(fixture.root.clone()));
+        assert!(
+            reconnected.witness(&first, fixture.disk_id, backend).is_none(),
+            "reconnect must retain Started"
+        );
+    }
+
+    #[test]
+    fn physical_alias_reuse_is_unknown_and_backend_identity_is_real() {
+        let temp = tempfile::tempdir().expect("alias parent");
+        let root = temp.path().join("root");
+        std::fs::create_dir(&root).expect("first physical root");
+        let old = register_native_publication_root(&root, &root).expect("first registration");
+        let backend: Arc<dyn super::super::local::LocalIoBackend> = Arc::new(super::super::local::StdBackend::new(root.clone()));
+        let id = uuid::Uuid::new_v4();
+        let witness = old.witness("same-name", id, Arc::clone(&backend)).expect("old witness");
+        let other_backend: Arc<dyn super::super::local::LocalIoBackend> =
+            Arc::new(super::super::local::StdBackend::new(root.clone()));
+        let other = old.witness("same-name", id, other_backend).expect("new backend witness");
+        assert!(!witness.matches(&other), "a different actual backend cannot reuse a pending observation");
+        std::fs::rename(&root, temp.path().join("retired-root")).expect("retire physical root");
+        std::fs::create_dir(&root).expect("replacement root at the same alias");
+        let replacement = register_native_publication_root(&root, &root).expect("replacement registration");
+        assert!(replacement.witness("same-name", id, backend).is_none(), "alias reuse must remain Unknown");
+        assert!(
+            !validate_native_creation_witnesses(&[witness]),
+            "old physical identity must not validate at a new root"
+        );
+    }
+}

crates/ecstore/src/error/mod.rs

@@ -17,8 +17,8 @@
 use crate::bucket::error::BucketMetadataError;
 use crate::disk::error::DiskError;
 use crate::storage_api_contracts::{error::StorageErrorCode, range::HTTPRangeError};
+use rustfs_s3_types::S3ErrorCode;
 use rustfs_utils::path::decode_dir_object;
-use s3s::S3ErrorCode;
 
 pub type Error = StorageError;
 pub type Result<T> = core::result::Result<T, Error>;

crates/ecstore/src/io_support/bitrot.rs

@@ -174,10 +174,14 @@ async fn open_reader_source(
     metrics_path: Option<&'static str>,
 ) -> disk::error::Result<Option<BoxedObjectReader>> {
     if let Some(data) = inline_data {
+        #[cfg(test)]
+        crate::set_disk::disk_call_counters::record_shard_open(path, true);
         let mut reader = Cursor::new(data);
         reader.set_position(u64::try_from(offset).map_err(|_| DiskError::FileCorrupt)?);
         Ok(Some(ShardReader::InMemory(reader)))
     } else if let Some(disk) = disk {
+        #[cfg(test)]
+        crate::set_disk::disk_call_counters::record_shard_open(path, false);
         open_disk_reader(disk, bucket, path, offset, length, use_mmap_read, metrics_path)
             .await
             .map(Some)

crates/ecstore/src/object_api/mod.rs

@@ -102,10 +102,14 @@ mod body_cache_hook;
 mod encryption;
 mod hook_slot;
 mod object_mutation_hook;
+mod read_condition;
 mod readers;
 mod types;
 pub(crate) mod write_commit_context;
 
+pub use read_condition::{GetObjectReadCondition, GetObjectReadMetadata, with_get_object_read_condition};
+pub(crate) use read_condition::{get_object_read_condition_is_active, get_object_read_condition_is_terminal};
+
 #[cfg(test)]
 mod persisted_metadata_keys_tests;
 

crates/ecstore/src/object_api/object_api_utils.rs

@@ -29,7 +29,7 @@ use crate::object_api::{GetObjectReader, ObjectInfo, ObjectOptions};
 use crate::storage_api_contracts::range::HTTPRangeSpec;
 use rustfs_filemeta::ObjectPartInfo;
 use rustfs_rio::HashReader;
-use s3s::S3ErrorCode;
+use rustfs_s3_types::S3ErrorCode;
 
 //#[derive(Clone)]
 pub struct PutObjReader {
@@ -231,6 +231,45 @@ mod tests {
         assert_eq!(result.2, 1024 * 1024);
     }
 
+    #[test]
+    fn test_new_getobjectreader_rejects_a_range_past_the_object_as_invalid_range() {
+        let oi = multipart_object_info();
+        let past_the_end = Some(HTTPRangeSpec {
+            is_suffix_length: false,
+            start: oi.size,
+            end: oi.size + 10,
+        });
+
+        let err = new_getobjectreader(&past_the_end, &oi, &ObjectOptions::default(), &HeaderMap::new())
+            .err()
+            .expect("a range starting at the object size must be rejected");
+
+        assert_eq!(err.code, S3ErrorCode::InvalidRange);
+        assert_eq!(err.code.as_str(), "InvalidRange");
+        assert_eq!(err.key, None);
+        assert_eq!(err.bucket_name, None);
+    }
+
+    #[test]
+    fn test_new_getobjectreader_rejects_an_unknown_size_without_a_range_as_invalid_range() {
+        let oi = ObjectInfo {
+            bucket: "bucket".to_string(),
+            name: "object".to_string(),
+            size: -1,
+            ..Default::default()
+        };
+
+        let err = new_getobjectreader(&None, &oi, &ObjectOptions::default(), &HeaderMap::new())
+            .err()
+            .expect("an object of unknown size cannot be read without a range");
+
+        assert_eq!(err.code, S3ErrorCode::InvalidRange);
+        assert_eq!(err.code.as_str(), "InvalidRange");
+        assert_eq!(err.message, "Invalid range");
+        assert_eq!(err.key.as_deref(), Some("object"));
+        assert_eq!(err.bucket_name.as_deref(), Some("bucket"));
+    }
+
     #[test]
     fn test_to_s3s_etag() {
         // Test unquoted ETag - should become strong etag

crates/ecstore/src/object_api/read_condition.rs

@@ -0,0 +1,113 @@
+// 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 rustfs_filemeta::{FileInfo, ObjectPartInfo};
+use std::future::Future;
+use std::sync::Arc;
+use time::OffsetDateTime;
+
+/// Borrowed fields needed to decide whether an object read needs a body.
+pub struct GetObjectReadMetadata<'a> {
+    pub bucket: &'a str,
+    pub object: &'a str,
+    pub etag: Option<&'a str>,
+    pub mod_time: Option<OffsetDateTime>,
+    pub parts: &'a [ObjectPartInfo],
+    pub delete_marker: bool,
+}
+
+impl<'a> GetObjectReadMetadata<'a> {
+    pub(crate) fn from_file_info(bucket: &'a str, object: &'a str, info: &'a FileInfo) -> Self {
+        Self {
+            bucket,
+            object,
+            etag: info.metadata.get("etag").map(String::as_str),
+            mod_time: info.mod_time,
+            parts: &info.parts,
+            delete_marker: info.deleted,
+        }
+    }
+}
+
+/// A pure decision on quorum-validated metadata. Authorization belongs to the caller.
+pub trait GetObjectReadCondition: Send + Sync {
+    fn is_terminal(&self, metadata: GetObjectReadMetadata<'_>) -> bool;
+}
+
+tokio::task_local! {
+    static READ_CONDITION: Arc<dyn GetObjectReadCondition>;
+}
+
+/// Applies a condition to this reader call, without inheriting it into shared producers.
+pub async fn with_get_object_read_condition<F: Future>(condition: Arc<dyn GetObjectReadCondition>, read: F) -> F::Output {
+    READ_CONDITION.scope(condition, read).await
+}
+
+pub(crate) fn get_object_read_condition_is_terminal(metadata: GetObjectReadMetadata<'_>) -> bool {
+    READ_CONDITION
+        .try_with(|condition| condition.is_terminal(metadata))
+        .unwrap_or(false)
+}
+
+pub(crate) fn get_object_read_condition_is_active() -> bool {
+    READ_CONDITION.try_with(|_| ()).is_ok()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    struct Stop;
+    impl GetObjectReadCondition for Stop {
+        fn is_terminal(&self, _: GetObjectReadMetadata<'_>) -> bool {
+            true
+        }
+    }
+    fn metadata() -> GetObjectReadMetadata<'static> {
+        GetObjectReadMetadata {
+            bucket: "bucket",
+            object: "object",
+            etag: Some("etag"),
+            mod_time: None,
+            parts: &[],
+            delete_marker: false,
+        }
+    }
+
+    #[tokio::test]
+    async fn read_condition_scope_does_not_escape_or_enter_shared_producers() {
+        assert!(!get_object_read_condition_is_terminal(metadata()));
+        with_get_object_read_condition(Arc::new(Stop), async {
+            assert!(get_object_read_condition_is_terminal(metadata()));
+            assert!(
+                !tokio::spawn(async { get_object_read_condition_is_terminal(metadata()) })
+                    .await
+                    .expect("shared producer")
+            );
+        })
+        .await;
+        assert!(!get_object_read_condition_is_terminal(metadata()));
+    }
+
+    #[tokio::test]
+    async fn dropping_a_pending_read_removes_its_condition_scope() {
+        let mut read = Box::pin(with_get_object_read_condition(Arc::new(Stop), async {
+            assert!(get_object_read_condition_is_terminal(metadata()));
+            std::future::pending::<()>().await;
+        }));
+        assert!(futures::poll!(&mut read).is_pending());
+        drop(read);
+        assert!(!get_object_read_condition_is_terminal(metadata()));
+    }
+}

crates/ecstore/src/object_api/readers.rs

@@ -528,6 +528,14 @@ pub struct GetObjectReader {
 }
 
 impl GetObjectReader {
+    pub(crate) fn condition_stopped(object_info: ObjectInfo) -> Self {
+        Self {
+            stream: Box::new(ConditionStoppedBody),
+            object_info,
+            buffered_body: None,
+            body_source: GetObjectBodySource::Unprobed,
+        }
+    }
     /// Builds a fully materialized reader from a cache-coordinated body.
     pub fn from_cache_body(mut object_info: ObjectInfo, body: Bytes) -> Result<Self> {
         object_info.size = i64::try_from(body.len()).map_err(|_| Error::other("cached GET body length exceeds i64::MAX"))?;
@@ -552,6 +560,17 @@ impl GetObjectReader {
     }
 }
 
+struct ConditionStoppedBody;
+
+impl AsyncRead for ConditionStoppedBody {
+    fn poll_read(self: Pin<&mut Self>, _cx: &mut Context<'_>, buf: &mut ReadBuf<'_>) -> Poll<std::io::Result<()>> {
+        if buf.remaining() == 0 {
+            return Poll::Ready(Ok(()));
+        }
+        Poll::Ready(Err(std::io::Error::other("object read condition must be handled before body access")))
+    }
+}
+
 enum ReadTransform {
     // Written but never read by production code: the enclosing struct already
     // carries the same pair as `storage_offset`/`storage_length`. They survive

crates/ecstore/src/object_api/types.rs

@@ -938,6 +938,10 @@ 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>,
+    /// In-process delete ownership for late filesystem completion. Never
+    /// serialized or copied into object metadata.
+    #[doc(hidden)]
+    pub delete_mutation_owner: Option<Arc<dyn Send + Sync>>,
     /// Internal read-only inspection must not enqueue metadata or payload repairs.
     pub suppress_read_repair: bool,
     /// Control-plane writers that immediately read or CAS the same namespace
@@ -1158,6 +1162,7 @@ impl std::fmt::Debug for ObjectOptions {
             .field("http_preconditions", &self.http_preconditions.is_some())
             .field("delete_replication", &self.delete_replication.is_some())
             .field("delete_replication_config_snapshot", &self.delete_replication_config_snapshot)
+            .field("delete_mutation_owner", &self.delete_mutation_owner.is_some())
             .field("namespace_lock_fence", &self.namespace_lock_fence.is_some())
             .field("bucket_lifecycle_lock_fence", &self.bucket_lifecycle_lock_fence.is_some())
             .field("replication_request", &self.replication_request)

crates/ecstore/src/runtime/sources.rs

@@ -50,6 +50,7 @@ use s3s::dto::BucketLifecycleConfiguration;
 use s3s::region::Region;
 use tokio::sync::{OwnedRwLockReadGuard, RwLock};
 use tokio_util::sync::CancellationToken;
+#[cfg(test)]
 use tonic::transport::Channel;
 use uuid::Uuid;
 
@@ -251,10 +252,6 @@ pub(crate) async fn root_disk_threshold_for_erasure_disk() -> Option<u64> {
     }
 }
 
-pub(crate) async fn cached_node_channel(addr: &str) -> Option<Channel> {
-    rustfs_common::cached_connection(addr).await
-}
-
 #[cfg(test)]
 pub(crate) async fn cache_test_node_channel(addr: String, channel: Channel) {
     rustfs_common::cache_connection(addr, channel).await;

crates/ecstore/src/services/rebalance/entry.rs

@@ -50,7 +50,7 @@ fn ensure_rebalance_entry_active(cancel: &CancellationToken) -> Result<()> {
     Ok(())
 }
 
-#[cfg(test)]
+#[cfg(any(test, feature = "test-util"))]
 tokio::task_local! {
     static REBALANCE_ENTRY_RUN_FENCE_BARRIER: (Arc<tokio::sync::Notify>, Arc<tokio::sync::Notify>);
 }
@@ -268,7 +268,7 @@ impl ECStore {
             self.rebalance_run_guard(rebalance_id.as_ref(), "rebalance entry")
         })
         .await?;
-        #[cfg(test)]
+        #[cfg(any(test, feature = "test-util"))]
         if let Ok((arrived, release)) = REBALANCE_ENTRY_RUN_FENCE_BARRIER.try_with(Clone::clone) {
             arrived.notify_one();
             release.notified().await;
@@ -836,7 +836,8 @@ pub mod test_util {
         _temp_dirs: Vec<tempfile::TempDir>,
         store: Arc<ECStore>,
         cancel: CancellationToken,
-        barrier: crate::data_movement::SourceCleanupDeleteBarrier,
+        entry_arrived: Arc<tokio::sync::Notify>,
+        entry_release: Arc<tokio::sync::Notify>,
         stop_probe: super::super::control::RebalanceStopWaitProbe,
         entry_task: Option<tokio::task::JoinHandle<Result<RebalanceEntryOutcome>>>,
     }
@@ -897,31 +898,36 @@ pub mod test_util {
                 cached: Some(file_meta),
                 reusable: false,
             };
-            let barrier = crate::data_movement::SourceCleanupDeleteBarrier::install(bucket, object);
+            let entry_arrived = Arc::new(tokio::sync::Notify::new());
+            let entry_release = Arc::new(tokio::sync::Notify::new());
             let entry_store = Arc::clone(&store);
             let entry_set = Arc::clone(&set);
             let entry_cancel = cancel.clone();
-            let entry_task = tokio::spawn(async move {
-                entry_store
-                    .rebalance_entry(
-                        RebalanceEntryTarget {
-                            bucket: bucket.to_string(),
-                            pool_index: 0,
-                        },
-                        entry,
-                        entry_set,
-                        Arc::new(RebalanceBucketConfigs::default()),
-                        Arc::from(rebalance_id),
-                        entry_cancel,
-                    )
-                    .await
-            });
+            let entry_task = tokio::spawn(REBALANCE_ENTRY_RUN_FENCE_BARRIER.scope(
+                (Arc::clone(&entry_arrived), Arc::clone(&entry_release)),
+                async move {
+                    entry_store
+                        .rebalance_entry(
+                            RebalanceEntryTarget {
+                                bucket: bucket.to_string(),
+                                pool_index: 0,
+                            },
+                            entry,
+                            entry_set,
+                            Arc::new(RebalanceBucketConfigs::default()),
+                            Arc::from(rebalance_id),
+                            entry_cancel,
+                        )
+                        .await
+                },
+            ));
 
             Self {
                 _temp_dirs,
                 store,
                 cancel,
-                barrier,
+                entry_arrived,
+                entry_release,
                 stop_probe: super::super::control::RebalanceStopWaitProbe::install(rebalance_id),
                 entry_task: Some(entry_task),
             }
@@ -932,7 +938,9 @@ pub mod test_util {
         }
 
         pub async fn wait_until_entry_paused(&self) {
-            self.barrier.wait_until_paused().await;
+            tokio::time::timeout(std::time::Duration::from_secs(30), self.entry_arrived.notified())
+                .await
+                .expect("the entry should acquire its run fence before pausing");
         }
 
         pub async fn wait_until_admission_cancelled(&self) {
@@ -946,7 +954,7 @@ pub mod test_util {
         }
 
         pub fn release_entry(&self) {
-            self.barrier.release();
+            self.entry_release.notify_one();
         }
 
         pub async fn assert_entry_cancelled(&mut self) {
@@ -964,7 +972,7 @@ pub mod test_util {
 
     impl Drop for PausedRebalanceEntryTestFixture {
         fn drop(&mut self) {
-            self.barrier.release();
+            self.entry_release.notify_one();
             if let Some(task) = self.entry_task.take() {
                 task.abort();
             }

crates/ecstore/src/services/tier/tier.rs

@@ -82,8 +82,9 @@ use crate::{
 use rustfs_filemeta::FileInfo;
 use rustfs_rio::HashReader;
 use rustfs_s3_client::{admin_handler_utils::AdminError, provider_versions::ProviderVersionCapabilities};
+use rustfs_s3_types::S3ErrorCode;
 use rustfs_utils::path::{SLASH_SEPARATOR, path_join};
-use s3s::{S3ErrorCode, dto::BucketLifecycleConfiguration};
+use s3s::dto::BucketLifecycleConfiguration;
 
 use super::{
     tier_handlers::{ERR_TIER_BUCKET_NOT_FOUND, ERR_TIER_CONNECT_ERR, ERR_TIER_INVALID_CREDENTIALS, ERR_TIER_PERM_ERR},

crates/ecstore/src/set_disk/conditional_read_bench.rs

@@ -0,0 +1,63 @@
+// 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.
+
+//! Test-util-only controls for the paired read benchmark's dedicated bucket.
+
+use std::sync::atomic::{AtomicBool, Ordering};
+
+static ACTIVE: AtomicBool = AtomicBool::new(false);
+
+/// Keeps metadata off the cache in the benchmark's isolated bucket so GET
+/// metadata reads exercise the configured slow disk. Body-cache policy
+/// remains intact.
+#[must_use]
+pub struct ConditionalReadBenchmarkMetadataGuard {
+    _private: (),
+}
+
+impl ConditionalReadBenchmarkMetadataGuard {
+    pub fn acquire() -> Self {
+        assert!(
+            ACTIVE
+                .compare_exchange(false, true, Ordering::AcqRel, Ordering::Acquire)
+                .is_ok()
+        );
+        Self { _private: () }
+    }
+}
+
+impl Drop for ConditionalReadBenchmarkMetadataGuard {
+    fn drop(&mut self) {
+        ACTIVE.store(false, Ordering::Release);
+    }
+}
+
+pub(super) fn cache_bypass_applies(bucket: &str) -> bool {
+    bucket == "conditional-bench" && ACTIVE.load(Ordering::Acquire)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn benchmark_metadata_profile_is_scoped_to_its_bucket_and_owner() {
+        assert!(!cache_bypass_applies("conditional-bench"));
+        let owner = ConditionalReadBenchmarkMetadataGuard::acquire();
+        assert!(cache_bypass_applies("conditional-bench"));
+        assert!(!cache_bypass_applies("other-bucket"));
+        drop(owner);
+        assert!(!cache_bypass_applies("conditional-bench"));
+    }
+}

crates/ecstore/src/set_disk/core/io_primitives.rs

@@ -1260,6 +1260,10 @@ async fn try_create_bitrot_readers_via_batch_pread(
     }
 
     let requests: Vec<_> = batch_items.iter().map(|(_, p, off, len)| (p.clone(), *off, *len)).collect();
+    #[cfg(test)]
+    for (disk_index, _, _, _) in &batch_items {
+        disk_call_counters::record(object, disk_call_counters::KIND_DISK_SHARD_OPEN, *disk_index);
+    }
     let batch_results = batch_shard_pread(requests).await;
 
     let mut setup = BitrotReaderSetup::new(disks.len());
@@ -6078,6 +6082,10 @@ pub(crate) mod disk_call_counters {
     pub const KIND_READ_VERSION: &str = "read_version";
     pub const KIND_BATCH_READ_VERSION: &str = "batch_read_version";
     pub const KIND_METADATA_SLOWTAIL_FAULT: &str = "metadata_slowtail_fault";
+    pub const KIND_INLINE_SHARD_OPEN: &str = "inline_shard_open";
+    pub const KIND_DISK_SHARD_OPEN: &str = "disk_shard_open";
+    /// Body verification, direct shard assembly, and erasure decoder entry points.
+    pub const KIND_BODY_DECODE: &str = "body_decode";
 
     /// Registry key: (object, kind, disk_index).
     type CountKey = (String, String, usize);
@@ -6108,6 +6116,28 @@ pub(crate) mod disk_call_counters {
             .or_insert(0) += 1;
     }
 
+    /// Matches shard paths to the observed object's namespace path. This also
+    /// records deferred opens running in spawned decoder tasks.
+    pub(crate) fn record_shard_open(path: &str, inline: bool) {
+        let mut reg = registry().lock().expect("disk call-counter registry poisoned");
+        let objects: Vec<_> = reg
+            .observed
+            .iter()
+            .filter(|object| {
+                path == object.as_str() || path.strip_prefix(object.as_str()).is_some_and(|rest| rest.starts_with('/'))
+            })
+            .cloned()
+            .collect();
+        let kind = if inline {
+            KIND_INLINE_SHARD_OPEN
+        } else {
+            KIND_DISK_SHARD_OPEN
+        };
+        for object in objects {
+            *reg.counts.entry((object, kind.to_owned(), 0)).or_insert(0) += 1;
+        }
+    }
+
     /// RAII scope that observes call counts for a single `object`. Counts recorded
     /// while the scope is alive — including those recorded inside spawned tasks —
     /// are queryable; the scope clears its own counts on drop.

crates/ecstore/src/set_disk/core/metadata_read.rs

@@ -66,6 +66,7 @@ use tokio::task::JoinSet;
 pub(in crate::set_disk) struct MetadataReadResult {
     pub(in crate::set_disk) slots: Vec<MetadataDiskObservation>,
     pub(in crate::set_disk) diagnostics: MetadataFanoutDiagnostics,
+    pub(in crate::set_disk) condition_stopped: bool,
 }
 
 impl MetadataReadResult {
@@ -655,6 +656,8 @@ async fn inline_body_miss_reason_from_observations<'a>(
         return Some(GET_METADATA_EARLY_STOP_REASON_DATA_READ_INLINE_BODY_VERIFY);
     };
 
+    #[cfg(test)]
+    crate::set_disk::disk_call_counters::record(object, crate::set_disk::disk_call_counters::KIND_BODY_DECODE, 0);
     match try_read_inline_data_shards_direct(&mut readers, erasure.data_shards, read_length, object_size).await {
         Some(body) if body.len() == object_size => None,
         _ => Some(GET_METADATA_EARLY_STOP_REASON_DATA_READ_INLINE_BODY_VERIFY),
@@ -1078,7 +1081,11 @@ impl SetDisks {
                 0,
             );
         }
-        Ok(MetadataReadResult { slots, diagnostics })
+        Ok(MetadataReadResult {
+            slots,
+            diagnostics,
+            condition_stopped: false,
+        })
     }
 
     #[allow(clippy::too_many_arguments)]
@@ -1121,6 +1128,7 @@ impl SetDisks {
         let mut next_fanout_index = 0usize;
         let mut scheduled_count = 0usize;
         let mut force_full_wait = false;
+        let read_condition_active = read_data && crate::object_api::get_object_read_condition_is_active();
         let mut final_miss_reason_override = None;
         let mut non_inline_candidate_eligible = None;
         let mut single_pending_hedge_deadline = None;
@@ -1258,12 +1266,28 @@ impl SetDisks {
                 }
             }
 
-            if !force_full_wait
+            if (!force_full_wait || read_condition_active)
                 && let Some(decision) = accumulator
                     .early_stop_decision()
                     .or_else(|| accumulator.version_early_stop_decision())
             {
-                let should_return_early = if read_data {
+                let condition_stopped = read_condition_active
+                    && decision.reason == crate::diagnostics::get::GET_METADATA_EARLY_STOP_REASON_VALID_QUORUM
+                    && accumulator.candidate.as_ref().is_some_and(|candidate| {
+                        !candidate.deleted
+                            && crate::object_api::get_object_read_condition_is_terminal(
+                                crate::object_api::GetObjectReadMetadata::from_file_info(
+                                    bucket.as_ref(),
+                                    object.as_ref(),
+                                    candidate,
+                                ),
+                            )
+                    });
+                let should_return_early = if condition_stopped {
+                    true
+                } else if force_full_wait {
+                    false
+                } else if read_data {
                     match accumulator.candidate.as_ref() {
                         Some(_candidate) if non_inline_candidate_eligible == Some(true) => {
                             accumulator.candidate_has_read_reserve()
@@ -1332,7 +1356,11 @@ impl SetDisks {
                         cancelled_count,
                     );
                     let diagnostics = MetadataFanoutDiagnostics::new(fanout_start.elapsed(), observations);
-                    return Ok(MetadataReadResult { slots, diagnostics });
+                    return Ok(MetadataReadResult {
+                        slots,
+                        diagnostics,
+                        condition_stopped,
+                    });
                 }
             }
 
@@ -1410,7 +1438,11 @@ impl SetDisks {
         rustfs_io_metrics::record_get_object_metadata_early_stop_saved_responses(metrics_path, 0);
         rustfs_io_metrics::record_get_object_metadata_fanout_lifecycle(metrics_path, scheduled_count, scheduled_count, 0);
         let diagnostics = MetadataFanoutDiagnostics::new(fanout_start.elapsed(), observations);
-        Ok(MetadataReadResult { slots, diagnostics })
+        Ok(MetadataReadResult {
+            slots,
+            diagnostics,
+            condition_stopped: false,
+        })
     }
 
     /// Test-only seam that records one per-disk `read_version` metadata RPC for

crates/ecstore/src/set_disk/mod.rs

@@ -793,6 +793,11 @@ const DEFAULT_RUSTFS_GET_METADATA_TWO_PHASE_READ_PLAN_ENABLE: bool = false;
 const ENV_RUSTFS_GET_METADATA_EARLY_STOP_BOUNDED_FANOUT: &str = "RUSTFS_GET_METADATA_EARLY_STOP_BOUNDED_FANOUT";
 const DEFAULT_RUSTFS_GET_METADATA_EARLY_STOP_BOUNDED_FANOUT: bool = true;
 
+#[cfg(feature = "test-util")]
+mod conditional_read_bench;
+#[cfg(feature = "test-util")]
+pub use conditional_read_bench::ConditionalReadBenchmarkMetadataGuard;
+
 const ENV_RUSTFS_GET_METADATA_SLOWTAIL_FAULT_DELAY_MS: &str = "RUSTFS_GET_METADATA_SLOWTAIL_FAULT_DELAY_MS";
 const ENV_RUSTFS_GET_METADATA_SLOWTAIL_FAULT_DISKS: &str = "RUSTFS_GET_METADATA_SLOWTAIL_FAULT_DISKS";
 const ENV_RUSTFS_GET_METADATA_SLOWTAIL_FAULT_BUCKET: &str = "RUSTFS_GET_METADATA_SLOWTAIL_FAULT_BUCKET";
@@ -874,6 +879,7 @@ mod ctx;
 mod metadata;
 mod ops;
 pub(crate) use ops::bucket::BucketInfoQuorum;
+pub(crate) use ops::delete_recovery::{DeleteRecoveryContext, DeleteRecoverySummary};
 pub(crate) use ops::heal::AbsenceProofRequest;
 #[cfg(test)]
 pub(crate) use ops::heal::DanglingDeleteFailure;
@@ -918,6 +924,7 @@ pub use ops::heal_walk::HealWalkVersion;
 pub(in crate::set_disk) struct GetObjectFileInfo {
     owned: Option<OwnedGetObjectFileInfo>,
     shared: Option<Arc<GetObjectMetadataCacheEntry>>,
+    condition_stopped: bool,
 }
 
 struct OwnedGetObjectFileInfo {
@@ -939,6 +946,7 @@ impl GetObjectFileInfo {
                 late_metadata_fanout_disks: None,
             }),
             shared: None,
+            condition_stopped: false,
         }
     }
 
@@ -956,13 +964,16 @@ impl GetObjectFileInfo {
                 late_metadata_fanout_disks: Some(late_metadata_fanout_disks),
             }),
             shared: None,
+            condition_stopped: false,
         }
     }
 
     fn shared(entry: Arc<GetObjectMetadataCacheEntry>) -> Self {
+        let condition_stopped = entry.capability == GetObjectMetadataCacheCapability::ConditionOnly;
         Self {
             owned: None,
             shared: Some(entry),
+            condition_stopped,
         }
     }
 
@@ -1143,6 +1154,248 @@ mod prepared_get_object_metadata_tests {
         assert!(take_prepared_get_object_metadata().is_none());
     }
 
+    struct StopReadForEtag(String);
+    impl crate::object_api::GetObjectReadCondition for StopReadForEtag {
+        fn is_terminal(&self, metadata: crate::object_api::GetObjectReadMetadata<'_>) -> bool {
+            !metadata.delete_marker && metadata.etag == Some(self.0.as_str())
+        }
+    }
+
+    #[tokio::test]
+    #[serial_test::serial(body_cache_hook)]
+    async fn read_condition_stops_on_quorum_before_slow_disk_and_body_verification() {
+        use crate::object_api::with_get_object_read_condition;
+        for size in [4096, 1_300_000] {
+            let (dirs, set) = make_local_set_disks(4, 2).await;
+            let bucket = "read-condition-quorum";
+            let object = object_with_initial_data_shards(bucket, &format!("read-condition-{size}"));
+            let opts = ObjectOptions {
+                no_lock: true,
+                ..Default::default()
+            };
+            set.make_bucket(bucket, &MakeBucketOptions::default())
+                .await
+                .expect("create bucket");
+            let mut put = PutObjReader::from_vec(vec![b'v'; size]);
+            let info = set.put_object(bucket, &object, &mut put, &opts).await.expect("write object");
+            for dir in &dirs {
+                let object_path = dir.path().join(bucket).join(&object);
+                if size == 4096 {
+                    let path = object_path.join("xl.meta");
+                    let mut bytes = tokio::fs::read(&path).await.expect("read inline metadata");
+                    *bytes.last_mut().expect("inline payload") ^= 1;
+                    tokio::fs::write(path, bytes).await.expect("damage inline data");
+                } else {
+                    tokio::fs::remove_dir_all(object_path.join(info.data_dir.expect("data directory").to_string()))
+                        .await
+                        .expect("remove shards");
+                }
+            }
+            let slow = bounded_initial_parity_disk_index(bucket, &object);
+            let barrier = rename_fanout_barrier::arm(&object, slow, rename_fanout_barrier::PHASE_READ_VERSION);
+            let calls = disk_call_counters::observe(&object);
+            let read_opts = ObjectOptions {
+                metadata_cache_safe: true,
+                ..opts
+            };
+            let followup_opts = read_opts.clone();
+            let condition = Arc::new(StopReadForEtag(info.etag.clone().expect("committed ETag")));
+            let set_for_read = Arc::clone(&set);
+            let object_for_read = object.clone();
+            let mut read = tokio::spawn(async move {
+                with_get_object_read_condition(
+                    condition,
+                    set_for_read.get_object_reader(bucket, &object_for_read, None, HeaderMap::new(), &read_opts),
+                )
+                .await
+            });
+            tokio::time::timeout(READ_VERSION_BARRIER_GUARD, barrier.wait_until_paused())
+                .await
+                .expect("slow metadata read is pending");
+            let mut reader = tokio::time::timeout(READ_VERSION_BARRIER_GUARD, &mut read)
+                .await
+                .expect("condition must not wait for the slow disk or decode damaged data")
+                .expect("reader task")
+                .expect("metadata-only result");
+            assert_eq!(reader.object_info.etag, info.etag);
+            assert_eq!(
+                calls.total(disk_call_counters::KIND_INLINE_SHARD_OPEN),
+                0,
+                "damaged inline data was never opened"
+            );
+            assert_eq!(
+                calls.total(disk_call_counters::KIND_DISK_SHARD_OPEN),
+                0,
+                "missing shards were never opened"
+            );
+            assert_eq!(
+                calls.total(disk_call_counters::KIND_BODY_DECODE),
+                0,
+                "the body verifier and decoder were never entered"
+            );
+            let mut body = Vec::new();
+            assert!(
+                reader.stream.read_to_end(&mut body).await.is_err(),
+                "terminal metadata cannot be served as a successful body"
+            );
+            assert!(body.is_empty());
+            let first_calls = calls.total(disk_call_counters::KIND_READ_VERSION);
+            drop(reader);
+            barrier.release();
+            let snapshot = set
+                .get_object_fileinfo_for_get_object_reader(bucket, &object, &followup_opts, true, true)
+                .await
+                .expect("fresh metadata after terminal scope");
+            assert!(!snapshot.condition_stopped);
+            assert!(
+                calls.total(disk_call_counters::KIND_READ_VERSION) > first_calls,
+                "an incomplete terminal snapshot must not satisfy the next metadata read from cache"
+            );
+        }
+    }
+
+    #[tokio::test]
+    #[serial_test::serial(body_cache_hook)]
+    async fn read_condition_skips_shard_open_and_decode_with_live_positive_controls() {
+        for size in [4096, 1_300_000] {
+            let (_dirs, set) = make_local_set_disks(4, 2).await;
+            let bucket = "read-condition-body-counters";
+            let object = object_with_initial_data_shards(bucket, &format!("body-counters-{size}"));
+            let opts = ObjectOptions {
+                no_lock: true,
+                ..Default::default()
+            };
+            let payload: Vec<_> = (0..size)
+                .map(|index| u8::try_from(index % 251).expect("pattern byte"))
+                .collect();
+            set.make_bucket(bucket, &MakeBucketOptions::default())
+                .await
+                .expect("create bucket");
+            let mut put = PutObjReader::from_vec(payload.clone());
+            let info = set.put_object(bucket, &object, &mut put, &opts).await.expect("write object");
+            let calls = disk_call_counters::observe(&object);
+            let reader = crate::object_api::with_get_object_read_condition(
+                Arc::new(StopReadForEtag(info.etag.expect("committed ETag"))),
+                set.get_object_reader(bucket, &object, None, HeaderMap::new(), &opts),
+            )
+            .await
+            .expect("terminal metadata reader");
+            drop(reader);
+            assert!(calls.total(disk_call_counters::KIND_READ_VERSION) > 0, "metadata really was read");
+            assert_eq!(
+                calls.total(disk_call_counters::KIND_INLINE_SHARD_OPEN),
+                0,
+                "no inline shard source opened"
+            );
+            assert_eq!(calls.total(disk_call_counters::KIND_DISK_SHARD_OPEN), 0, "no disk shard source opened");
+            assert_eq!(
+                calls.total(disk_call_counters::KIND_BODY_DECODE),
+                0,
+                "no body verifier or decoder entered"
+            );
+
+            let mut reader = crate::object_api::with_get_object_read_condition(
+                Arc::new(StopReadForEtag("different-etag".to_owned())),
+                set.get_object_reader(bucket, &object, None, HeaderMap::new(), &opts),
+            )
+            .await
+            .expect("unmatched condition opens the intact object");
+            let mut body = Vec::new();
+            reader.stream.read_to_end(&mut body).await.expect("positive-control body");
+            assert_eq!(body, payload);
+            let source_kind = if size == 4096 {
+                disk_call_counters::KIND_INLINE_SHARD_OPEN
+            } else {
+                disk_call_counters::KIND_DISK_SHARD_OPEN
+            };
+            assert!(
+                calls.total(source_kind) > 0,
+                "the same source counter observes the positive control: size={size}, inline={}, disk={}, decode={}",
+                calls.total(disk_call_counters::KIND_INLINE_SHARD_OPEN),
+                calls.total(disk_call_counters::KIND_DISK_SHARD_OPEN),
+                calls.total(disk_call_counters::KIND_BODY_DECODE),
+            );
+            assert!(
+                calls.total(disk_call_counters::KIND_BODY_DECODE) > 0,
+                "the same decode counter observes the positive control"
+            );
+        }
+    }
+
+    #[tokio::test]
+    #[serial_test::serial(body_cache_hook)]
+    async fn read_condition_rechecks_selected_metadata_before_body_access() {
+        struct Changing(std::sync::atomic::AtomicUsize);
+        impl crate::object_api::GetObjectReadCondition for Changing {
+            fn is_terminal(&self, _: crate::object_api::GetObjectReadMetadata<'_>) -> bool {
+                self.0.fetch_add(1, std::sync::atomic::Ordering::Relaxed) == 0
+            }
+        }
+        let (_dirs, set) = make_local_set_disks(4, 2).await;
+        let bucket = "read-condition-consistency";
+        let object = object_with_initial_data_shards(bucket, "read-condition-consistency");
+        let opts = ObjectOptions {
+            no_lock: true,
+            ..Default::default()
+        };
+        set.make_bucket(bucket, &MakeBucketOptions::default())
+            .await
+            .expect("create bucket");
+        let mut put = PutObjReader::from_vec(vec![b'x'; 4096]);
+        set.put_object(bucket, &object, &mut put, &opts).await.expect("write object");
+        let result = crate::object_api::with_get_object_read_condition(
+            Arc::new(Changing(std::sync::atomic::AtomicUsize::new(0))),
+            set.get_object_reader(bucket, &object, None, HeaderMap::new(), &opts),
+        )
+        .await;
+        assert!(result.is_err(), "an unverified terminal snapshot must never become a 200 reader");
+    }
+
+    #[tokio::test]
+    #[serial_test::serial(body_cache_hook)]
+    async fn read_condition_miss_preserves_inline_early_stop_and_exact_body() {
+        let (_dirs, set) = make_local_set_disks(4, 2).await;
+        let bucket = "read-condition-miss";
+        let object = object_with_initial_data_shards(bucket, "read-condition-miss");
+        let opts = ObjectOptions {
+            no_lock: true,
+            ..Default::default()
+        };
+        let payload: Vec<u8> = (0..8192)
+            .map(|index| u8::try_from(index % 251).expect("pattern byte"))
+            .collect();
+        set.make_bucket(bucket, &MakeBucketOptions::default())
+            .await
+            .expect("create bucket");
+        let mut put = PutObjReader::from_vec(payload.clone());
+        set.put_object(bucket, &object, &mut put, &opts)
+            .await
+            .expect("write inline object");
+        let slow = bounded_initial_parity_disk_index(bucket, &object);
+        let barrier = rename_fanout_barrier::arm(&object, slow, rename_fanout_barrier::PHASE_READ_VERSION);
+        let set_for_read = Arc::clone(&set);
+        let object_for_read = object.clone();
+        let mut read = tokio::spawn(async move {
+            crate::object_api::with_get_object_read_condition(
+                Arc::new(StopReadForEtag("other".to_owned())),
+                set_for_read.get_object_reader(bucket, &object_for_read, None, HeaderMap::new(), &opts),
+            )
+            .await
+        });
+        tokio::time::timeout(READ_VERSION_BARRIER_GUARD, barrier.wait_until_paused())
+            .await
+            .expect("slow metadata read is pending");
+        let mut reader = tokio::time::timeout(READ_VERSION_BARRIER_GUARD, &mut read)
+            .await
+            .expect("condition miss preserves the normal early stop")
+            .expect("reader task")
+            .expect("reader");
+        let mut bytes = Vec::new();
+        reader.stream.read_to_end(&mut bytes).await.expect("normal body");
+        assert_eq!(bytes, payload);
+        barrier.release();
+    }
+
     #[test]
     fn cache_hit_consumers_release_snapshot_at_legacy_ownership() {
         let fi = FileInfo {
@@ -1151,6 +1404,7 @@ mod prepared_get_object_metadata_tests {
         };
         let cached = Arc::new(GetObjectMetadataCacheEntry {
             created_at: Instant::now(),
+            capability: GetObjectMetadataCacheCapability::Full,
             parts_metadata: vec![fi.clone()],
             fi,
             online_disks: vec![None],
@@ -4433,6 +4687,13 @@ impl Hash for GetObjectMetadataCacheKey {
     }
 }
 
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+enum GetObjectMetadataCacheCapability {
+    Full,
+    // Quorum-validated metadata without a complete body or write-target layout.
+    ConditionOnly,
+}
+
 #[derive(Debug)]
 struct GetObjectMetadataCacheEntry {
     #[allow(dead_code)] // Kept for debugging; moka handles TTL internally
@@ -4441,6 +4702,7 @@ struct GetObjectMetadataCacheEntry {
     parts_metadata: Vec<FileInfo>,
     online_disks: Vec<Option<DiskStore>>,
     read_quorum: usize,
+    capability: GetObjectMetadataCacheCapability,
 }
 
 #[derive(Clone, Debug)]

crates/ecstore/src/set_disk/ops/bucket.rs

@@ -123,8 +123,18 @@ impl SetDisks {
     }
 
     pub(crate) async fn list_bucket_for_scanner(&self, _opts: &BucketOptions) -> Result<(Vec<BucketInfo>, bool)> {
+        self.list_bucket_with_quorum(BucketInfoQuorum::Write).await
+    }
+
+    pub(crate) async fn list_bucket_with_quorum(&self, quorum: BucketInfoQuorum) -> Result<(Vec<BucketInfo>, bool)> {
         let disks = self.disk_inventory().await;
         let write_quorum = (disks.len() / 2) + 1;
+        // Discovery uses the same namespace read boundary as stat_bucket.
+        // It grants no authority to mutate buckets or accept object reads.
+        let required = match quorum {
+            BucketInfoQuorum::Read => disks.len().div_ceil(2).max(1),
+            BucketInfoQuorum::Write => write_quorum,
+        };
 
         let mut futures = Vec::with_capacity(disks.len());
         for disk in disks {
@@ -153,7 +163,11 @@ impl SetDisks {
             }
         }
 
-        if let Some(err) = reduce_write_quorum_errs(&errs, BUCKET_OP_IGNORED_ERRS, write_quorum) {
+        let error = match quorum {
+            BucketInfoQuorum::Read => reduce_read_quorum_errs(&errs, BUCKET_OP_IGNORED_ERRS, required),
+            BucketInfoQuorum::Write => reduce_write_quorum_errs(&errs, BUCKET_OP_IGNORED_ERRS, required),
+        };
+        if let Some(err) = error {
             return Err(err.into());
         }
 
@@ -179,7 +193,7 @@ impl SetDisks {
         topology_complete &= counts.values().all(|(count, _)| *count >= write_quorum);
         let mut buckets = counts
             .into_values()
-            .filter_map(|(count, bucket)| (count >= write_quorum).then_some(bucket))
+            .filter_map(|(count, bucket)| (count >= required).then_some(bucket))
             .collect::<Vec<_>>();
         buckets.sort_by(|left, right| left.name.cmp(&right.name));
         Ok((buckets, topology_complete))

crates/ecstore/src/set_disk/ops/mod.rs

@@ -19,6 +19,7 @@
 
 pub(crate) mod bitrot_self_verify;
 pub(crate) mod bucket;
+pub(crate) mod delete_recovery;
 pub(crate) mod heal;
 pub(crate) mod heal_walk;
 pub(crate) mod list;

crates/ecstore/src/store/heal.rs

@@ -270,6 +270,134 @@ impl ECStore {
         .map_err(|error| Error::other_with_context("bucket heal owner task failed", error))?
     }
 
+    /// Recover hidden delete journals through the lifecycle-owned heal boundary.
+    pub async fn recover_delete_transactions(self: &Arc<Self>, bucket: &str, opts: &HealOpts) -> Result<HealResultItem> {
+        Ok(self
+            .recover_delete_transactions_at_incarnation(bucket, None, None, opts)
+            .await?
+            .unwrap_or_else(|| HealResultItem {
+                heal_item_type: HealItemType::Bucket.to_string(),
+                bucket: bucket.to_owned(),
+                detail: "delete recovery: discovered=0".to_owned(),
+                ..Default::default()
+            }))
+    }
+
+    pub async fn recover_delete_transactions_at_incarnation(
+        self: &Arc<Self>,
+        bucket: &str,
+        object: Option<&str>,
+        expected: Option<Uuid>,
+        opts: &HealOpts,
+    ) -> Result<Option<HealResultItem>> {
+        self.recover_delete_transactions_in_scope(bucket, object, None, expected, opts)
+            .await
+    }
+
+    pub async fn recover_delete_prefix_at_incarnation(
+        self: &Arc<Self>,
+        bucket: &str,
+        prefix: &str,
+        expected: Option<Uuid>,
+        opts: &HealOpts,
+    ) -> Result<Option<HealResultItem>> {
+        self.recover_delete_transactions_in_scope(bucket, None, Some(prefix), expected, opts)
+            .await
+    }
+
+    async fn recover_delete_transactions_in_scope(
+        self: &Arc<Self>,
+        bucket: &str,
+        object: Option<&str>,
+        prefix: Option<&str>,
+        expected: Option<Uuid>,
+        opts: &HealOpts,
+    ) -> Result<Option<HealResultItem>> {
+        if opts.no_lock && !opts.dry_run {
+            return Err(StorageError::InvalidArgument(
+                "heal".to_string(),
+                "no_lock".to_string(),
+                "delete recovery requires namespace locking".to_string(),
+            ));
+        }
+        let expected = match expected {
+            Some(expected) => expected,
+            None => self.bucket_incarnation_id_from_disk(bucket).await?,
+        };
+        let object = object.map(str::to_owned);
+        let prefix = prefix.map(str::to_owned);
+        self.run_bucket_heal_at_incarnation(bucket, expected, opts, |store, bucket, opts| async move {
+            let scope = bucket_heal_scope(&bucket).ok_or(StorageError::PreconditionFailed)?;
+            let explicit_delete = opts.remove
+                && metadata_sys::has_authoritative_never_versioned_state_in(&store.ctx, &bucket).await?
+                && matches!(
+                    metadata_sys::get_object_lock_config_state_in(&store.ctx, &bucket).await?,
+                    metadata_sys::ObjectLockConfigState::ConfirmedAbsent
+                );
+            let movement_gate = store.ctx.data_movement_operation_gate();
+            let _movement_guard = movement_gate.read().await;
+            let can_commit = || scope.check().is_ok();
+            let recovery_context = crate::set_disk::DeleteRecoveryContext {
+                dry_run: opts.dry_run,
+                explicit_delete,
+                namespace_owner: (!opts.dry_run)
+                    .then(|| Arc::new((scope.clone(), store.ctx.begin_namespace_commit())) as Arc<dyn Send + Sync>),
+                ..crate::set_disk::DeleteRecoveryContext::new(Some(scope.incarnation), &can_commit)
+            };
+            let mut summary = crate::set_disk::DeleteRecoverySummary::default();
+            for pool in store.get_pools_for_heal_object(&opts)? {
+                if store.is_suspended(pool.pool_idx).await || store.is_pool_rebalancing(pool.pool_idx).await {
+                    return Err(StorageError::SlowDown);
+                }
+                for (set_index, set) in pool.disk_set.iter().enumerate() {
+                    if opts.set.is_some_and(|requested| requested != set_index) {
+                        continue;
+                    }
+                    if let Some(object) = &object {
+                        if !Arc::ptr_eq(set, &pool.get_disks_by_key(object)) {
+                            continue;
+                        }
+                        summary.add(set.recover_delete_object(&bucket, object, recovery_context.clone()).await?);
+                    } else if let Some(prefix) = &prefix {
+                        summary.add(set.recover_delete_prefix(&bucket, prefix, recovery_context.clone()).await?);
+                    } else {
+                        summary.add(set.recover_delete_bucket(&bucket, recovery_context.clone()).await?);
+                    }
+                }
+            }
+            if summary.pending > 0 {
+                return Err(StorageError::ErasureReadQuorum);
+            }
+            if object.is_some() && !opts.dry_run && summary.blocked > 0 {
+                return Err(StorageError::SlowDown);
+            }
+            if summary.discovered == 0 {
+                return Ok(None);
+            }
+            Ok(Some(HealResultItem {
+                heal_item_type: if object.is_some() {
+                    HealItemType::Object
+                } else {
+                    HealItemType::Bucket
+                }
+                .to_string(),
+                object: object.or(prefix).unwrap_or_default(),
+                bucket,
+                detail: format!(
+                    "delete recovery{}: discovered={}, committed={}, rolled_back={}, reclaimed={}, blocked={}",
+                    if opts.dry_run { " (dry run)" } else { "" },
+                    summary.discovered,
+                    summary.committed,
+                    summary.rolled_back,
+                    summary.reclaimed,
+                    summary.blocked
+                ),
+                ..Default::default()
+            }))
+        })
+        .await
+    }
+
     pub async fn heal_bucket_at_incarnation(
         self: &Arc<Self>,
         bucket: &str,

crates/ecstore/src/store/init_format.rs

@@ -134,6 +134,18 @@ pub(crate) async fn connect_load_init_formats_with_instance_ctx(
     {
         return Err(Error::CorruptedFormat);
     }
+    if matches!(format_quorum, Some(Err(Error::ErasureReadQuorum)))
+        && let Some((format, members)) = select_existing_format_read_quorum(&formats, &errs, set_drive_count)
+    {
+        retain_format_quorum_members(instance_ctx, disks, &format, &members, set_drive_count).await?;
+        // Loading an existing format grants no authority to initialize pool
+        // metadata or migrate formats. The persisted storage classes and each
+        // object's EC metadata still determine service and operation quorums.
+        return Ok(LoadedFormat {
+            format,
+            pool_meta_bootstrap_authority: PoolMetaBootstrapAuthority::None,
+        });
+    }
     let resumable_partial_migration = formats_present > 0
         && errs.iter().any(|error| matches!(error, Some(DiskError::UnformattedDisk)))
         && format_quorum.as_ref().is_some_and(Result::is_err)
@@ -578,6 +590,43 @@ pub fn get_format_erasure_in_quorum(formats: &[Option<FormatV3>], slot_offset: u
     select_format_erasure_in_quorum(formats, slot_offset).map(|(format, _)| format)
 }
 
+/// Load a consistent existing layout with enough members per set to read the
+/// max-parity system metadata containing the persisted storage classes. This
+/// is not object-read admission: STANDARD, RRS and historical objects can have
+/// different EC layouts, which are validated after this bootstrap read.
+/// Format migration and healing still use strict-majority election.
+fn select_existing_format_read_quorum(
+    formats: &[Option<FormatV3>],
+    errors: &[Option<DiskError>],
+    set_drive_count: usize,
+) -> Option<(FormatV3, Vec<bool>)> {
+    if set_drive_count == 0 || formats.is_empty() || formats.len() != errors.len() {
+        return None;
+    }
+    let metadata_parity = set_drive_count / 2;
+    let metadata_read_quorum = set_drive_count - metadata_parity;
+    let reference = formats.iter().flatten().next()?;
+    if !formats_match_reference_slots(formats, reference, 0)
+        || check_format_erasure_value_for_topology(reference, formats.len(), set_drive_count).is_err()
+        || formats.iter().zip(errors).any(|(format, error)| match (format, error) {
+            (Some(_), None) => false,
+            (None, Some(DiskError::DiskNotFound)) => false,
+            (None, Some(error)) => !is_network_like_disk_error(error),
+            _ => true,
+        })
+        || formats
+            .chunks(set_drive_count)
+            .any(|set| set.iter().flatten().count() < metadata_read_quorum)
+    {
+        return None;
+    }
+
+    let mut format = reference.clone();
+    format.erasure.this = Uuid::nil();
+    format.disk_info = None;
+    Some((format, formats.iter().map(Option::is_some).collect()))
+}
+
 pub(crate) fn select_format_erasure_in_quorum(formats: &[Option<FormatV3>], slot_offset: usize) -> Result<(FormatV3, Vec<bool>)> {
     let mut candidates = HashMap::new();
     let formats_present = formats.iter().flatten().count();
@@ -1120,6 +1169,190 @@ mod tests {
         assert!(!formats_match_reference_slots(&formats, &reference, 0));
     }
 
+    fn half_pool_formats() -> (Vec<Option<FormatV3>>, Vec<Option<DiskError>>) {
+        let reference = FormatV3::new(6, 4);
+        let formats = (0..24)
+            .map(|slot| {
+                (slot % 4 < 2).then(|| {
+                    let mut format = reference.clone();
+                    format.erasure.this = reference.erasure.sets[slot / 4][slot % 4];
+                    format
+                })
+            })
+            .collect::<Vec<_>>();
+        let errors = formats
+            .iter()
+            .map(|format| format.is_none().then_some(DiskError::DiskNotFound))
+            .collect();
+        (formats, errors)
+    }
+
+    #[test]
+    fn existing_format_read_quorum_follows_each_sets_metadata_layout() {
+        // These are system-metadata EC boundaries, independent of user-object
+        // storage classes and of how many drives are hosted by each node.
+        for (set_width, read_quorum) in [(1, 1), (2, 1), (3, 2), (4, 2), (6, 3), (8, 4), (12, 6), (16, 8)] {
+            for set_count in [1, 2, 5] {
+                let reference = FormatV3::new(set_count, set_width);
+                let mut formats = (0..set_count * set_width)
+                    .map(|slot| {
+                        let set = slot / set_width;
+                        let drive = slot % set_width;
+                        // Rotate surviving slots between sets so admission
+                        // cannot depend on the first drive or node being up.
+                        ((drive + set) % set_width < read_quorum).then(|| {
+                            let mut format = reference.clone();
+                            format.erasure.this = reference.erasure.sets[set][drive];
+                            format
+                        })
+                    })
+                    .collect::<Vec<_>>();
+                let mut errors = formats
+                    .iter()
+                    .map(|format| format.is_none().then_some(DiskError::DiskNotFound))
+                    .collect::<Vec<_>>();
+                let (loaded, members) = select_existing_format_read_quorum(&formats, &errors, set_width)
+                    .unwrap_or_else(|| panic!("metadata read quorum must load {set_count} sets of {set_width} drives"));
+                assert_eq!(loaded.shared_identity(), reference.shared_identity());
+                assert!(loaded.erasure.this.is_nil());
+                assert_eq!(members.iter().filter(|member| **member).count(), set_count * read_quorum);
+
+                // More members in other sets cannot compensate for one set
+                // falling below its own metadata reconstruction boundary.
+                for slot in 0..(set_count - 1) * set_width {
+                    let mut format = reference.clone();
+                    format.erasure.this = reference.erasure.sets[slot / set_width][slot % set_width];
+                    formats[slot] = Some(format);
+                    errors[slot] = None;
+                }
+                let lost_slot = formats
+                    .iter()
+                    .rposition(Option::is_some)
+                    .expect("at least one surviving drive");
+                formats[lost_slot] = None;
+                errors[lost_slot] = Some(DiskError::DiskNotFound);
+                assert!(
+                    select_existing_format_read_quorum(&formats, &errors, set_width).is_none(),
+                    "one set below read quorum must block {set_count} sets of {set_width} drives"
+                );
+            }
+        }
+    }
+
+    #[test]
+    fn existing_format_read_quorum_preserves_election_and_set_boundaries() {
+        let (mut formats, mut errors) = half_pool_formats();
+        assert!(select_existing_format_read_quorum(&[], &[], 0).is_none());
+        assert!(select_existing_format_read_quorum(&formats, &errors[..23], 4).is_none());
+        assert!(select_existing_format_read_quorum(&formats, &errors, 0).is_none());
+        assert!(select_existing_format_read_quorum(&formats, &errors, 6).is_none());
+        assert!(select_existing_format_read_quorum(&formats, &errors, 4).is_some());
+        assert!(matches!(get_format_erasure_in_quorum(&formats, 0), Err(Error::ErasureReadQuorum)));
+
+        let mut extra = formats[0].as_ref().expect("seed format").clone();
+        extra.erasure.this = extra.erasure.sets[0][2];
+        formats[2] = Some(extra);
+        errors[2] = None;
+        assert!(get_format_erasure_in_quorum(&formats, 0).is_ok(), "13 votes must establish a majority");
+        formats[5] = None;
+        errors[5] = Some(DiskError::DiskNotFound);
+        assert!(
+            select_existing_format_read_quorum(&formats, &errors, 4).is_none(),
+            "12 votes cannot compensate for a set with only one readable drive"
+        );
+        formats[2] = None;
+        errors[2] = Some(DiskError::DiskNotFound);
+        assert!(select_existing_format_read_quorum(&formats, &errors, 4).is_none(), "11 votes must wait");
+    }
+
+    #[test]
+    fn existing_format_read_quorum_rejects_conflicts_invalid_slots_and_blank_disks() {
+        for failure in [
+            "conflict",
+            "wrong_slot",
+            "nil",
+            "duplicate",
+            "blank",
+            "corrupt",
+            "access_denied",
+            "tie",
+        ] {
+            let (mut formats, mut errors) = half_pool_formats();
+            match failure {
+                "conflict" => formats[1].as_mut().expect("second format").id = Uuid::new_v4(),
+                "wrong_slot" => {
+                    let first_id = formats[0].as_ref().expect("first format").erasure.this;
+                    formats[1].as_mut().expect("second format").erasure.this = first_id;
+                }
+                "nil" => {
+                    for format in formats.iter_mut().flatten() {
+                        format.id = Uuid::nil();
+                    }
+                }
+                "duplicate" => {
+                    for format in formats.iter_mut().flatten() {
+                        format.erasure.sets[5][3] = format.erasure.sets[0][0];
+                    }
+                }
+                "blank" => errors[2] = Some(DiskError::UnformattedDisk),
+                "corrupt" => errors[2] = Some(DiskError::CorruptedFormat),
+                "access_denied" => errors[2] = Some(DiskError::FileAccessDenied),
+                "tie" => {
+                    let other = FormatV3::new(6, 4);
+                    for slot in 0..24 {
+                        if formats[slot].is_none() {
+                            let mut format = other.clone();
+                            format.erasure.this = other.erasure.sets[slot / 4][slot % 4];
+                            formats[slot] = Some(format);
+                            errors[slot] = None;
+                        }
+                    }
+                }
+                _ => unreachable!(),
+            }
+            assert!(
+                select_existing_format_read_quorum(&formats, &errors, 4).is_none(),
+                "{failure} must not authorize degraded startup"
+            );
+        }
+    }
+
+    #[tokio::test]
+    async fn existing_format_load_accepts_each_half_of_four_by_six_without_format_writes() {
+        let (_root, all_disks) = local_disks_with_set_width(24, 4).await;
+        let reference = FormatV3::new(6, 4);
+        for (slot, disk) in all_disks.iter().enumerate() {
+            let mut format = reference.clone();
+            format.erasure.this = reference.erasure.sets[slot / 4][slot % 4];
+            save_format_file(disk, &Some(format)).await.expect("persist existing format");
+        }
+        let before = format_bytes(&all_disks).await;
+        for first in 0..4 {
+            for second in first + 1..4 {
+                let mut disks = all_disks.clone();
+                for (slot, disk) in disks.iter_mut().enumerate() {
+                    if slot % 4 != first && slot % 4 != second {
+                        *disk = None;
+                    }
+                }
+                let loaded = connect_load_init_formats_with_instance_ctx(
+                    &Arc::new(InstanceContext::new()),
+                    first == 0,
+                    &mut disks,
+                    6,
+                    4,
+                    None,
+                )
+                .await
+                .expect("two nodes must load the existing format");
+                assert_eq!(loaded.format.shared_identity(), reference.shared_identity());
+                assert!(matches!(loaded.pool_meta_bootstrap_authority, PoolMetaBootstrapAuthority::None));
+                assert_eq!(disks.iter().flatten().count(), 12);
+                assert_eq!(format_bytes(&all_disks).await, before, "read startup must never rewrite formats");
+            }
+        }
+    }
+
     #[tokio::test]
     async fn existing_format_load_succeeds_with_a_strict_majority() {
         let (_temp_dir, mut disks) = two_local_disks_with_missing_third().await;

crates/ecstore/src/store/list_objects.rs

@@ -9221,7 +9221,7 @@ mod test {
         };
         let snapshot = PersistentListMetadataObject::from_object_info(&object);
         assert!(snapshot.to_object_info("bucket").etag.is_none());
-        let mut old_snapshot = snapshot.clone();
+        let mut old_snapshot = snapshot;
         old_snapshot.etag = object.etag.clone();
         let old_contents = format!(
             "# rustfs-listobjects-key-only-v2\n{}\n",

crates/ecstore/src/store/object.rs

@@ -4849,7 +4849,9 @@ impl ECStore {
         opts: ObjectOptions,
         guards: impl IntoIterator<Item = rustfs_lock::NamespaceLockGuard>,
     ) -> Result<ObjectInfo> {
-        let guards: Vec<_> = guards.into_iter().collect();
+        let guards = Arc::new(guards.into_iter().collect::<Vec<_>>());
+        let mut opts = opts;
+        opts.delete_mutation_owner = Some(Arc::new((opts.delete_mutation_owner.take(), guards.clone())));
         let store = Arc::clone(self);
         let bucket = bucket.to_owned();
         let object = object.to_owned();
@@ -4861,7 +4863,7 @@ impl ECStore {
                 if result.is_ok() {
                     list_objects::observe_list_objects_mutation(&store, &bucket).await;
                 }
-                // Keep: the only use of `guards` here, it moves them into the task so the locks outlive a dropped caller.
+                // Transient options also retain these guards through late disk I/O.
                 drop(guards);
                 result
             })
@@ -4930,7 +4932,7 @@ impl ECStore {
             let mut opts = opts;
             let receipt_sink = install_tier_free_version_receipt_sink(&mut opts);
             let result = self
-                .handle_delete_object_with_journal_inner(bucket, object, opts, tier_journal_api)
+                .handle_delete_object_with_journal_inner_boxed(bucket, object, opts, tier_journal_api)
                 .await;
             enqueue_recorded_tier_free_versions(self, receipt_sink).await;
             result
@@ -4938,6 +4940,16 @@ impl ECStore {
         .await
     }
 
+    fn handle_delete_object_with_journal_inner_boxed<'a>(
+        &'a self,
+        bucket: &'a str,
+        object: &'a str,
+        opts: ObjectOptions,
+        tier_journal_api: Option<Arc<ECStore>>,
+    ) -> impl std::future::Future<Output = Result<ObjectInfo>> + Send + 'a {
+        Box::pin(self.handle_delete_object_with_journal_inner(bucket, object, opts, tier_journal_api))
+    }
+
     async fn handle_delete_object_with_journal_inner(
         &self,
         bucket: &str,
@@ -4955,9 +4967,9 @@ impl ECStore {
             if is_meta_bucketname(bucket) || (opts.delete_prefix && opts.bucket_lifecycle_lock_fence.is_some()) {
                 None
             } else if opts.delete_prefix {
-                Some(self.acquire_bucket_lifecycle_write_lock(bucket).await?)
+                Some(Arc::new(self.acquire_bucket_lifecycle_write_lock(bucket).await?))
             } else {
-                Some(self.acquire_bucket_lifecycle_read_lock(bucket).await?)
+                Some(Arc::new(self.acquire_bucket_lifecycle_read_lock(bucket).await?))
             };
         let object = if opts.delete_prefix && !opts.delete_prefix_object {
             object.to_owned()
@@ -4975,6 +4987,7 @@ impl ECStore {
         opts.tier_delete_journal_api = tier_journal_api.clone();
         if let Some(guard) = _bucket_lifecycle_guard.as_ref() {
             opts.add_bucket_lifecycle_lock_guard(guard);
+            opts.delete_mutation_owner = Some(Arc::new((opts.delete_mutation_owner.take(), guard.clone())));
         }
 
         if !is_meta_bucketname(bucket) {
@@ -5227,6 +5240,40 @@ impl ECStore {
                 return Ok(obj);
             }
             Err(err) => {
+                if (is_err_object_not_found(&err) || is_err_version_not_found(&err))
+                    && (opts.version_id.is_some() || (!opts.versioned && !opts.version_suspended))
+                    && opts.http_preconditions.is_none()
+                    && !opts.replication_request
+                {
+                    let mut reclaimed = None;
+                    for pool in &self.pools {
+                        if self.is_suspended(pool.pool_idx).await || self.is_pool_rebalancing(pool.pool_idx).await {
+                            return Err(StorageError::SlowDown);
+                        }
+                        let pool_idx = pool.pool_idx;
+                        let pool = pool.clone();
+                        match self
+                            .run_external_decommission_capacity_object_delete(
+                                pool_idx,
+                                bucket,
+                                object,
+                                object,
+                                opts.clone(),
+                                |opts| async move { pool.delete_object(bucket, object, opts).await },
+                            )
+                            .await
+                        {
+                            Ok(result) => reclaimed = Some(result),
+                            Err(missing) if is_err_object_not_found(&missing) || is_err_version_not_found(&missing) => {}
+                            Err(error) => return Err(error),
+                        }
+                    }
+                    if let Some(mut result) = reclaimed {
+                        result.bucket = bucket.to_owned();
+                        result.name = decode_dir_object(object);
+                        return Ok(result);
+                    }
+                }
                 // A folder key (`prefix/`) with no object metadata may still exist on
                 // disk as an orphan empty-directory tree (issue #4189): listings show
                 // it as a common prefix, but no regular delete path can remove it.
@@ -5422,12 +5469,13 @@ impl ECStore {
             None
         } else {
             match self.acquire_bucket_lifecycle_read_lock(bucket).await {
-                Ok(guard) => Some(guard),
+                Ok(guard) => Some(Arc::new(guard)),
                 Err(err) => return return_batch_delete_lock_error_with_accounting(objects.as_slice(), err),
             }
         };
         if let Some(guard) = _bucket_lifecycle_guard.as_ref() {
             opts.add_bucket_lifecycle_lock_guard(guard);
+            opts.delete_mutation_owner = Some(Arc::new((opts.delete_mutation_owner.take(), guard.clone())));
         }
         if opts.delete_replication_config_snapshot.is_none() {
             match ReplicationObjectBridge::delete_request_config_in(&self.ctx, bucket).await {
@@ -5493,10 +5541,11 @@ impl ECStore {
         if current_bucket_incarnation_id.is_some() {
             pause_delete_after_object_lock_snapshot(bucket).await;
         }
-        let _object_lock_guards = match self.acquire_delete_objects_write_locks(bucket, &objects, &mut opts).await {
+        let _object_lock_guards = Arc::new(match self.acquire_delete_objects_write_locks(bucket, &objects, &mut opts).await {
             Ok(guards) => guards,
             Err(err) => return return_batch_delete_lock_error_with_accounting(objects.as_slice(), err),
-        };
+        });
+        opts.delete_mutation_owner = Some(Arc::new((opts.delete_mutation_owner.take(), _object_lock_guards.clone())));
         #[cfg(any(test, feature = "test-util"))]
         if !_object_lock_guards.is_empty() {
             notify_delete_namespace_acquired(bucket);
@@ -9241,8 +9290,31 @@ mod tests {
                 .expect("read original marker");
             assert_eq!(info.delete_marker_incarnation(), Some(old_incarnation));
         }
-        // Taking four actual members offline preserves their existing xl.meta.
-        // All deletion/recreation work below goes through the normal store API.
+        // Save each stale member's inline versions before converging the old
+        // bucket's delete receipts, then reintroduce them after recreation.
+        let mut stale_metadata = Vec::new();
+        for disk in before.iter().skip(12).flatten() {
+            for version in &historical {
+                let info = disk
+                    .read_version(
+                        "",
+                        bucket,
+                        "history.bin",
+                        &version.to_string(),
+                        &crate::disk::ReadOptions {
+                            read_data: true,
+                            ..Default::default()
+                        },
+                    )
+                    .await
+                    .expect("read stale inline data version");
+                assert!(info.inline_data() && info.data.is_some(), "fixture payload must be preserved in xl.meta");
+            }
+            stale_metadata.push((
+                disk.read_all(bucket, "history.bin/xl.meta").await.unwrap(),
+                disk.read_all(bucket, &format!("{object}/xl.meta")).await.unwrap(),
+            ));
+        }
         for slot in 12..16 {
             set.disks.write().await[slot] = None;
         }
@@ -9272,6 +9344,29 @@ mod tests {
             )
             .await
             .expect("delete exact old marker with four drives offline");
+        let pending = store
+            .handle_delete_bucket(bucket, &crate::storage_api_contracts::bucket::DeleteBucketOptions::default())
+            .await
+            .expect_err("offline participants require retained delete receipts");
+        assert!(matches!(
+            pending,
+            StorageError::BucketNotEmpty(_) | StorageError::BucketNotEmptyWithDetails { .. }
+        ));
+        assert!(
+            !crate::bucket::retirement::is_retired(store.clone(), bucket, old_incarnation)
+                .await
+                .unwrap()
+        );
+        *set.disks.write().await = before.clone();
+        store
+            .recover_delete_transactions_at_incarnation(
+                bucket,
+                None,
+                Some(old_incarnation),
+                &rustfs_heal_contracts::heal_channel::HealOpts::default(),
+            )
+            .await
+            .expect("converge old bucket deletes on all participants");
         store
             .handle_delete_bucket(bucket, &crate::storage_api_contracts::bucket::DeleteBucketOptions::default())
             .await
@@ -9281,6 +9376,9 @@ mod tests {
                 .await
                 .expect("durable retirement")
         );
+        for slot in 12..16 {
+            set.disks.write().await[slot] = None;
+        }
         store
             .handle_make_bucket(bucket, &create)
             .await
@@ -9306,6 +9404,13 @@ mod tests {
                 .expect("write new generation");
             new_versions.push((key, info.version_id.unwrap(), payload));
         }
+        for (slot, (history, marker)) in (12..16).zip(stale_metadata) {
+            for (key, bytes) in [("history.bin", history), (object, marker)] {
+                let root = dirs[slot].path().join(bucket).join(key);
+                tokio::fs::create_dir_all(&root).await.unwrap();
+                tokio::fs::write(root.join("xl.meta"), bytes).await.unwrap();
+            }
+        }
         *set.disks.write().await = before.clone();
         let heal = rustfs_heal_contracts::heal_channel::HealOpts {
             remove: true,
@@ -11477,3 +11582,160 @@ mod tests {
         .await;
     }
 }
+
+#[cfg(test)]
+mod missing_key_delete_quorum_tests {
+    use super::*;
+    use crate::bucket::metadata_sys::{init_bucket_metadata_sys, test_support::isolated_store_over_temp_disks};
+    use crate::storage_api_contracts::bucket::{BucketOperations, BucketOptions, MakeBucketOptions};
+
+    async fn degraded_store(bucket: &str) -> (Vec<tempfile::TempDir>, Arc<ECStore>) {
+        let (dirs, store) = isolated_store_over_temp_disks().await;
+        init_bucket_metadata_sys(store.clone(), Vec::new()).await;
+        store
+            .make_bucket(bucket, &MakeBucketOptions::default())
+            .await
+            .expect("create authoritative never-versioned bucket");
+        store.pools[0].disk_set[0].disks.write().await[0] = None;
+        let info = store
+            .get_bucket_info(bucket, &BucketOptions::default())
+            .await
+            .expect("existing bucket must remain readable at quorum");
+        assert_eq!(info.name, bucket);
+        let lookup = store
+            .get_object_info_for_delete(bucket, "never-existed", &ObjectOptions::default())
+            .await;
+        assert!(
+            lookup.as_ref().is_err_and(is_err_object_not_found),
+            "remaining disks must establish absence through production lookup: {lookup:?}"
+        );
+        (dirs, store)
+    }
+
+    #[tokio::test]
+    async fn single_delete_missing_key_preserves_quorum_noop() {
+        let (_dirs, store) = degraded_store("missing-key-quorum-single").await;
+        let result = store
+            .delete_object_with_tier_delete_journal("missing-key-quorum-single", "never-existed", ObjectOptions::default())
+            .await;
+        assert!(
+            result.as_ref().is_err_and(is_err_object_not_found),
+            "single missing-key delete must preserve its idempotent not-found outcome at quorum: {result:?}"
+        );
+    }
+
+    #[tokio::test]
+    async fn batch_delete_missing_key_preserves_quorum_noop() {
+        let (_dirs, store) = degraded_store("missing-key-quorum-batch").await;
+        let (_, errors, _) = store
+            .delete_objects_with_tier_delete_journal_and_accounting(
+                "missing-key-quorum-batch",
+                vec![ObjectToDelete {
+                    object_name: "never-existed".to_owned(),
+                    ..Default::default()
+                }],
+                ObjectOptions::default(),
+            )
+            .await;
+        assert_eq!(errors.len(), 1, "batch DELETE must return one result per key");
+        assert!(
+            errors.iter().all(Option::is_none),
+            "batch missing-key delete must preserve its idempotent success at quorum: {errors:?}"
+        );
+    }
+
+    #[cfg(not(windows))]
+    #[tokio::test]
+    async fn batch_delete_timeout_retains_physical_key_guard() {
+        use crate::disk::os::prepared_publication_test_hooks as hooks;
+        use crate::disk::{DiskAPI, ReadOptions};
+        use crate::storage_api_contracts::object::ObjectIO;
+        temp_env::async_with_vars([("RUSTFS_DELETE_RECOVERY_TIMEOUT_SECS", Some("30"))], async {
+            let (_dirs, store) = isolated_store_over_temp_disks().await;
+            init_bucket_metadata_sys(store.clone(), Vec::new()).await;
+            let bucket = "review-batch-late-owner";
+            let key = "object";
+            store
+                .make_bucket(bucket, &MakeBucketOptions::default())
+                .await
+                .expect("fixture bucket");
+            let mut reader = PutObjReader::from_vec(vec![0x51; 1024 * 1024]);
+            store
+                .put_object(
+                    bucket,
+                    key,
+                    &mut reader,
+                    &ObjectOptions {
+                        write_completion: crate::object_api::WriteCompletion::TailDrained,
+                        ..Default::default()
+                    },
+                )
+                .await
+                .expect("seed real external object");
+            let disks = store.pools[0].disk_set[0].disk_inventory().await;
+            let disk = disks[0].as_ref().expect("online drive");
+            let info = disk
+                .read_version("", bucket, key, "", &ReadOptions::default())
+                .await
+                .expect("seed metadata");
+            assert!(!info.inline_data());
+            let crate::disk::Disk::Local(local) = disk.as_ref() else {
+                panic!("local disk");
+            };
+            let part = local
+                .get_disk()
+                .get_object_path_for_io(bucket, key)
+                .expect("leased key")
+                .join(info.data_dir.expect("external data directory").to_string())
+                .join("part.1");
+            let (entered_tx, entered_rx) = tokio::sync::oneshot::channel();
+            let (release, release_rx) = std::sync::mpsc::channel::<()>();
+            let hook = hooks::install_at(hooks::Stage::Remove, &part, move || {
+                let _ = entered_tx.send(());
+                let _ = release_rx.recv();
+            });
+            let deleting = store.clone();
+            let delete = tokio::spawn(async move {
+                deleting
+                    .delete_objects_with_tier_delete_journal_and_accounting(
+                        bucket,
+                        vec![ObjectToDelete {
+                            object_name: key.to_owned(),
+                            ..Default::default()
+                        }],
+                        ObjectOptions::default(),
+                    )
+                    .await
+            });
+            tokio::time::timeout(Duration::from_secs(10), entered_rx)
+                .await
+                .expect("physical cleanup entry")
+                .expect("entry hook");
+            assert!(part.exists(), "payload unlink has not run");
+            let (_, errors, _) = tokio::time::timeout(Duration::from_secs(40), delete)
+                .await
+                .expect("real settlement timeout must return")
+                .expect("delete task");
+            assert!(errors.iter().all(Option::is_none), "certified batch response: {errors:?}");
+            assert!(
+                store.ctx.namespace_commits_pending(),
+                "background physical operation must retain its owner"
+            );
+            let ns = store.handle_new_ns_lock(bucket, key).await.expect("same production key lock");
+            let probe = ns.get_write_lock(Duration::from_millis(300)).await;
+            let acquired_while_pending = probe.is_ok();
+            drop(probe);
+            drop(release);
+            drop(hook);
+            assert!(
+                !acquired_while_pending,
+                "batch released the exact-key guard while physical cleanup was still paused after its real recovery timeout"
+            );
+            let _released = ns
+                .get_write_lock(Duration::from_secs(10))
+                .await
+                .expect("physical cleanup must eventually release the exact-key guard");
+        })
+        .await;
+    }
+}

crates/ecstore/tests/bucket_config_goldens.rs

@@ -0,0 +1,497 @@
+// 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.
+
+//! Byte-level goldens for the 13 persisted bucket-configuration XML families
+//! (rustfs/backlog#2744).
+//!
+//! Responsible for: pinning the exact bytes that `deserialize` followed by
+//! `serialize` produces for every family in its three source shapes (AWS
+//! documentation shape, MinIO-written shape, RustFS-written shape), and the
+//! exact bytes RustFS writes for a typed value. Only bytes are compared; a
+//! structural comparison would let a codec replacement change the persisted
+//! encoding without failing here.
+//!
+//! Not responsible for: validating configurations, touching the bucket
+//! metadata store, or choosing a canonical shape.
+//!
+//! Upstream: the bucket-config `deserialize`/`serialize` pair, reached through the
+//! integration-test facade `tests/storage_api.rs`, and the s3s DTOs they are generic over. Downstream: the DTO/codec
+//! replacement (T1.4) and the persisted-bytes comparison (T3.7), which must
+//! keep every golden green without regenerating it. Regeneration is reserved
+//! to `scripts/gen_bucket_config_goldens.sh`, which sets
+//! `BUCKET_CONFIG_GOLDENS_WRITE`: in that mode every test writes its files
+//! and then fails on purpose, so a write run never prints a green line.
+
+mod storage_api;
+
+use s3s::dto::{
+    AbortIncompleteMultipartUpload, AccelerateConfiguration, BucketAccelerateStatus, BucketLifecycleConfiguration,
+    BucketLoggingStatus, BucketVersioningStatus, CORSConfiguration, CORSRule, Condition, DefaultRetention, DelMarkerExpiration,
+    DeleteMarkerReplication, DeleteMarkerReplicationStatus, DeleteReplication, DeleteReplicationStatus, Destination,
+    ErrorDocument, Event, ExcludedPrefix, ExistingObjectReplication, ExistingObjectReplicationStatus, ExpirationStatus,
+    FilterRule, FilterRuleName, IndexDocument, LifecycleExpiration, LifecycleRule, LifecycleRuleAndOperator, LifecycleRuleFilter,
+    LoggingEnabled, NoncurrentVersionExpiration, NotificationConfiguration, NotificationConfigurationFilter,
+    ObjectLockConfiguration, ObjectLockEnabled, ObjectLockRetentionMode, ObjectLockRule, Payer, PublicAccessBlockConfiguration,
+    QueueConfiguration, Redirect, ReplicaModifications, ReplicaModificationsStatus, ReplicationConfiguration, ReplicationRule,
+    ReplicationRuleAndOperator, ReplicationRuleFilter, ReplicationRuleStatus, RequestPaymentConfiguration, RoutingRule,
+    S3KeyFilter, ServerSideEncryption, ServerSideEncryptionByDefault, ServerSideEncryptionConfiguration,
+    ServerSideEncryptionRule, SourceSelectionCriteria, StorageClass, Tag, Tagging, Transition, TransitionStorageClass,
+    VersioningConfiguration, WebsiteConfiguration,
+};
+use s3s::xml;
+use std::path::{Path, PathBuf};
+use storage_api::bucket_config_codec::{deserialize, serialize};
+
+/// Set only by `scripts/gen_bucket_config_goldens.sh`. Every pair test then
+/// writes its `.out.xml` (and, for the `rustfs` shape, its `.in.xml`) and
+/// fails on purpose, so a write run can never be mistaken for a verification.
+const WRITE_ENV: &str = "BUCKET_CONFIG_GOLDENS_WRITE";
+
+fn goldens_dir() -> PathBuf {
+    Path::new(env!("CARGO_MANIFEST_DIR"))
+        .join("tests")
+        .join("fixtures")
+        .join("bucket-config-goldens")
+}
+
+fn pair_path(family: &str, shape: &str, side: &str) -> PathBuf {
+    goldens_dir().join(family).join(format!("{shape}.{side}.xml"))
+}
+
+fn read(path: &Path) -> Vec<u8> {
+    std::fs::read(path).unwrap_or_else(|err| panic!("read {}: {err}", path.display()))
+}
+
+fn write(path: &Path, bytes: &[u8]) {
+    std::fs::write(path, bytes).unwrap_or_else(|err| panic!("write {}: {err}", path.display()));
+}
+
+fn contains(haystack: &[u8], needle: &[u8]) -> bool {
+    haystack.windows(needle.len()).any(|window| window == needle)
+}
+
+fn round_trip<T>(input: &[u8], label: &str) -> Vec<u8>
+where
+    T: for<'xml> xml::Deserialize<'xml> + xml::Serialize,
+{
+    let parsed: T = deserialize(input).unwrap_or_else(|err| panic!("{label}: deserialize failed: {err}"));
+    serialize(&parsed).unwrap_or_else(|err| panic!("{label}: serialize failed: {err}"))
+}
+
+/// Byte comparison with a readable report. Parsed values are never compared.
+fn assert_bytes_eq(actual: &[u8], expected: &[u8], context: &str) {
+    if actual != expected {
+        panic!(
+            "{context}\n--- expected ({} bytes) ---\n{}\n--- actual ({} bytes) ---\n{}\n",
+            expected.len(),
+            String::from_utf8_lossy(expected),
+            actual.len(),
+            String::from_utf8_lossy(actual),
+        );
+    }
+}
+
+/// Checks one `<family>/<shape>` pair. `typed` is the value RustFS writes for
+/// the `rustfs` shape; the `aws` and `minio` shapes pass `None`.
+fn check_pair<T>(family: &str, shape: &str, typed: Option<&T>)
+where
+    T: for<'xml> xml::Deserialize<'xml> + xml::Serialize,
+{
+    let in_path = pair_path(family, shape, "in");
+    let out_path = pair_path(family, shape, "out");
+    let label = format!("{family}/{shape}");
+
+    if std::env::var_os(WRITE_ENV).is_some() {
+        if let Some(value) = typed {
+            let written = serialize(value).unwrap_or_else(|err| panic!("{label}: typed value failed to serialize: {err}"));
+            write(&in_path, &written);
+        }
+        let input = read(&in_path);
+        write(&out_path, &round_trip::<T>(&input, &label));
+        panic!(
+            "{WRITE_ENV} is set: wrote {} without verifying anything; rerun without {WRITE_ENV}",
+            out_path.display()
+        );
+    }
+
+    let input = read(&in_path);
+    let expected = read(&out_path);
+    if let Some(value) = typed {
+        let written = serialize(value).unwrap_or_else(|err| panic!("{label}: typed value failed to serialize: {err}"));
+        assert_bytes_eq(
+            &written,
+            &input,
+            &format!(
+                "{label}: RustFS no longer writes the pinned bytes for the typed value ({})",
+                in_path.display()
+            ),
+        );
+    }
+    let actual = round_trip::<T>(&input, &label);
+    assert_bytes_eq(
+        &actual,
+        &expected,
+        &format!("{label}: deserialize->serialize bytes drifted from {}", out_path.display()),
+    );
+    let again = round_trip::<T>(&expected, &label);
+    assert_bytes_eq(
+        &again,
+        &expected,
+        &format!("{label}: the golden is not a fixed point of deserialize->serialize"),
+    );
+}
+
+/// The typed values behind every `rustfs.in.xml`: what RustFS writes today
+/// through `serialize` when it persists a configuration it built itself.
+/// MinIO-only members (`DelMarkerExpiration`, `ExcludeFolders`,
+/// `ExcludedPrefixes`, `DeleteReplication`) are included where RustFS accepts
+/// them, so the `rustfs` shape is the one that pins their encoding.
+mod rustfs_values {
+    use super::*;
+
+    fn tag(key: &str, value: &str) -> Tag {
+        Tag {
+            key: Some(key.to_owned()),
+            value: Some(value.to_owned()),
+        }
+    }
+
+    pub(super) fn notification() -> NotificationConfiguration {
+        NotificationConfiguration {
+            queue_configurations: Some(vec![QueueConfiguration {
+                events: vec![
+                    Event::from("s3:ObjectCreated:*".to_owned()),
+                    Event::from("s3:ObjectRemoved:*".to_owned()),
+                ],
+                filter: Some(NotificationConfigurationFilter {
+                    key: Some(S3KeyFilter {
+                        filter_rules: Some(vec![FilterRule {
+                            name: Some(FilterRuleName::from_static(FilterRuleName::PREFIX)),
+                            value: Some("uploads/".to_owned()),
+                        }]),
+                    }),
+                }),
+                id: Some("rustfs-webhook".to_owned()),
+                queue_arn: "arn:rustfs:sqs::primary:webhook".to_owned(),
+            }]),
+            ..Default::default()
+        }
+    }
+
+    pub(super) fn lifecycle() -> BucketLifecycleConfiguration {
+        BucketLifecycleConfiguration {
+            rules: vec![
+                LifecycleRule {
+                    abort_incomplete_multipart_upload: Some(AbortIncompleteMultipartUpload {
+                        days_after_initiation: Some(3),
+                    }),
+                    del_marker_expiration: Some(DelMarkerExpiration { days: Some(7) }),
+                    expiration: Some(LifecycleExpiration {
+                        days: Some(30),
+                        ..Default::default()
+                    }),
+                    filter: Some(LifecycleRuleFilter {
+                        prefix: Some("tmp/".to_owned()),
+                        ..Default::default()
+                    }),
+                    id: Some("expire-tmp".to_owned()),
+                    noncurrent_version_expiration: Some(NoncurrentVersionExpiration {
+                        newer_noncurrent_versions: Some(2),
+                        noncurrent_days: Some(7),
+                    }),
+                    noncurrent_version_transitions: None,
+                    prefix: None,
+                    status: ExpirationStatus::from_static(ExpirationStatus::ENABLED),
+                    transitions: None,
+                },
+                LifecycleRule {
+                    abort_incomplete_multipart_upload: None,
+                    del_marker_expiration: None,
+                    expiration: None,
+                    filter: Some(LifecycleRuleFilter {
+                        and: Some(LifecycleRuleAndOperator {
+                            prefix: Some("archive/".to_owned()),
+                            tags: Some(vec![tag("tier", "cold")]),
+                            ..Default::default()
+                        }),
+                        ..Default::default()
+                    }),
+                    id: Some("tier-cold".to_owned()),
+                    noncurrent_version_expiration: None,
+                    noncurrent_version_transitions: None,
+                    prefix: None,
+                    status: ExpirationStatus::from_static(ExpirationStatus::ENABLED),
+                    transitions: Some(vec![Transition {
+                        days: Some(90),
+                        storage_class: Some(TransitionStorageClass::from_static("COLDTIER")),
+                        ..Default::default()
+                    }]),
+                },
+            ],
+            ..Default::default()
+        }
+    }
+
+    pub(super) fn object_lock() -> ObjectLockConfiguration {
+        ObjectLockConfiguration {
+            object_lock_enabled: Some(ObjectLockEnabled::from_static(ObjectLockEnabled::ENABLED)),
+            rule: Some(ObjectLockRule {
+                default_retention: Some(DefaultRetention {
+                    days: Some(30),
+                    mode: Some(ObjectLockRetentionMode::from_static(ObjectLockRetentionMode::GOVERNANCE)),
+                    years: None,
+                }),
+            }),
+        }
+    }
+
+    pub(super) fn versioning() -> VersioningConfiguration {
+        VersioningConfiguration {
+            exclude_folders: Some(true),
+            excluded_prefixes: Some(vec![
+                ExcludedPrefix {
+                    prefix: Some("tmp/".to_owned()),
+                },
+                ExcludedPrefix {
+                    prefix: Some("cache/".to_owned()),
+                },
+            ]),
+            mfa_delete: None,
+            status: Some(BucketVersioningStatus::from_static(BucketVersioningStatus::ENABLED)),
+        }
+    }
+
+    pub(super) fn encryption() -> ServerSideEncryptionConfiguration {
+        ServerSideEncryptionConfiguration {
+            rules: vec![ServerSideEncryptionRule {
+                apply_server_side_encryption_by_default: Some(ServerSideEncryptionByDefault {
+                    kms_master_key_id: Some("rustfs-bucket-key".to_owned()),
+                    sse_algorithm: ServerSideEncryption::from_static(ServerSideEncryption::AWS_KMS),
+                }),
+                blocked_encryption_types: None,
+                bucket_key_enabled: Some(false),
+            }],
+        }
+    }
+
+    pub(super) fn tagging() -> Tagging {
+        Tagging {
+            tag_set: vec![tag("team", "storage"), tag("env", "staging")],
+        }
+    }
+
+    pub(super) fn replication() -> ReplicationConfiguration {
+        ReplicationConfiguration {
+            role: String::new(),
+            rules: vec![ReplicationRule {
+                delete_marker_replication: Some(DeleteMarkerReplication {
+                    status: Some(DeleteMarkerReplicationStatus::from_static(DeleteMarkerReplicationStatus::ENABLED)),
+                }),
+                delete_replication: Some(DeleteReplication {
+                    status: DeleteReplicationStatus::from_static(DeleteReplicationStatus::ENABLED),
+                }),
+                destination: Destination {
+                    bucket: "arn:rustfs:replication::0b6f3c2a-5e6a-4d2b-9c1e-7a8f9d0e1b2c:interop-dr".to_owned(),
+                    storage_class: Some(StorageClass::from_static(StorageClass::STANDARD)),
+                    ..Default::default()
+                },
+                existing_object_replication: Some(ExistingObjectReplication {
+                    status: ExistingObjectReplicationStatus::from_static(ExistingObjectReplicationStatus::ENABLED),
+                }),
+                filter: Some(ReplicationRuleFilter {
+                    and: Some(ReplicationRuleAndOperator {
+                        prefix: Some("docs/".to_owned()),
+                        tags: Some(vec![tag("replicate", "yes")]),
+                    }),
+                    ..Default::default()
+                }),
+                id: Some("rustfs-dr".to_owned()),
+                prefix: None,
+                priority: Some(1),
+                source_selection_criteria: Some(SourceSelectionCriteria {
+                    replica_modifications: Some(ReplicaModifications {
+                        status: ReplicaModificationsStatus::from_static(ReplicaModificationsStatus::ENABLED),
+                    }),
+                    sse_kms_encrypted_objects: None,
+                }),
+                status: ReplicationRuleStatus::from_static(ReplicationRuleStatus::ENABLED),
+            }],
+        }
+    }
+
+    pub(super) fn cors() -> CORSConfiguration {
+        CORSConfiguration {
+            cors_rules: vec![CORSRule {
+                allowed_headers: Some(vec!["Authorization".to_owned(), "Content-Type".to_owned()]),
+                allowed_methods: vec!["GET".to_owned(), "PUT".to_owned()],
+                allowed_origins: vec!["https://app.example.internal".to_owned()],
+                expose_headers: Some(vec!["ETag".to_owned(), "x-amz-request-id".to_owned()]),
+                id: Some("rustfs-app".to_owned()),
+                max_age_seconds: Some(3600),
+            }],
+        }
+    }
+
+    pub(super) fn logging() -> BucketLoggingStatus {
+        BucketLoggingStatus {
+            logging_enabled: Some(LoggingEnabled {
+                target_bucket: "rustfs-access-logs".to_owned(),
+                target_grants: None,
+                target_object_key_format: None,
+                target_prefix: "buckets/interop/".to_owned(),
+            }),
+        }
+    }
+
+    pub(super) fn website() -> WebsiteConfiguration {
+        WebsiteConfiguration {
+            error_document: Some(ErrorDocument {
+                key: "404.html".to_owned(),
+            }),
+            index_document: Some(IndexDocument {
+                suffix: "index.html".to_owned(),
+            }),
+            redirect_all_requests_to: None,
+            routing_rules: Some(vec![RoutingRule {
+                condition: Some(Condition {
+                    http_error_code_returned_equals: None,
+                    key_prefix_equals: Some("legacy/".to_owned()),
+                }),
+                redirect: Redirect {
+                    host_name: None,
+                    http_redirect_code: Some("301".to_owned()),
+                    protocol: None,
+                    replace_key_prefix_with: Some("current/".to_owned()),
+                    replace_key_with: None,
+                },
+            }]),
+        }
+    }
+
+    pub(super) fn accelerate() -> AccelerateConfiguration {
+        AccelerateConfiguration {
+            status: Some(BucketAccelerateStatus::from_static(BucketAccelerateStatus::SUSPENDED)),
+        }
+    }
+
+    pub(super) fn request_payment() -> RequestPaymentConfiguration {
+        RequestPaymentConfiguration {
+            payer: Payer::from_static(Payer::BUCKET_OWNER),
+        }
+    }
+
+    pub(super) fn public_access_block() -> PublicAccessBlockConfiguration {
+        PublicAccessBlockConfiguration {
+            block_public_acls: Some(true),
+            block_public_policy: Some(false),
+            ignore_public_acls: Some(true),
+            restrict_public_buckets: Some(false),
+        }
+    }
+}
+
+/// One test per `<family>/<shape>` pair: 13 families x 3 shapes = 39.
+mod bucket_config_goldens {
+    use super::*;
+
+    macro_rules! golden {
+        ($name:ident, $family:literal, $shape:literal, $ty:ty) => {
+            #[test]
+            fn $name() {
+                check_pair::<$ty>($family, $shape, None);
+            }
+        };
+        ($name:ident, $family:literal, rustfs = $value:expr) => {
+            #[test]
+            fn $name() {
+                check_pair($family, "rustfs", Some(&$value));
+            }
+        };
+    }
+
+    golden!(notification_aws, "notification", "aws", NotificationConfiguration);
+    golden!(notification_minio, "notification", "minio", NotificationConfiguration);
+    golden!(notification_rustfs, "notification", rustfs = rustfs_values::notification());
+
+    golden!(lifecycle_aws, "lifecycle", "aws", BucketLifecycleConfiguration);
+    golden!(lifecycle_minio, "lifecycle", "minio", BucketLifecycleConfiguration);
+    golden!(lifecycle_rustfs, "lifecycle", rustfs = rustfs_values::lifecycle());
+
+    golden!(object_lock_aws, "object_lock", "aws", ObjectLockConfiguration);
+    golden!(object_lock_minio, "object_lock", "minio", ObjectLockConfiguration);
+    golden!(object_lock_rustfs, "object_lock", rustfs = rustfs_values::object_lock());
+
+    golden!(versioning_aws, "versioning", "aws", VersioningConfiguration);
+    golden!(versioning_minio, "versioning", "minio", VersioningConfiguration);
+    golden!(versioning_rustfs, "versioning", rustfs = rustfs_values::versioning());
+
+    golden!(encryption_aws, "encryption", "aws", ServerSideEncryptionConfiguration);
+    golden!(encryption_minio, "encryption", "minio", ServerSideEncryptionConfiguration);
+    golden!(encryption_rustfs, "encryption", rustfs = rustfs_values::encryption());
+
+    golden!(tagging_aws, "tagging", "aws", Tagging);
+    golden!(tagging_minio, "tagging", "minio", Tagging);
+    golden!(tagging_rustfs, "tagging", rustfs = rustfs_values::tagging());
+
+    /// `replication/aws.in.xml` is the unknown-element sample from
+    /// `crates/replication/src/config.rs`
+    /// (`s3_xml_parser_discards_unknown_replication_elements_before_validation`).
+    /// Beyond the byte golden, the pair proves the root-level `FutureTopLevel`
+    /// element is skipped on read and never re-emitted on write.
+    #[test]
+    fn replication_aws() {
+        check_pair::<ReplicationConfiguration>("replication", "aws", None);
+        let input = read(&pair_path("replication", "aws", "in"));
+        let output = read(&pair_path("replication", "aws", "out"));
+        assert!(
+            contains(&input, b"<FutureTopLevel>future</FutureTopLevel>"),
+            "the sample must still carry the unknown element"
+        );
+        assert!(
+            !contains(&output, b"FutureTopLevel"),
+            "an unknown element must not be re-emitted: {}",
+            String::from_utf8_lossy(&output)
+        );
+    }
+    golden!(replication_minio, "replication", "minio", ReplicationConfiguration);
+    golden!(replication_rustfs, "replication", rustfs = rustfs_values::replication());
+
+    golden!(cors_aws, "cors", "aws", CORSConfiguration);
+    golden!(cors_minio, "cors", "minio", CORSConfiguration);
+    golden!(cors_rustfs, "cors", rustfs = rustfs_values::cors());
+
+    golden!(logging_aws, "logging", "aws", BucketLoggingStatus);
+    golden!(logging_minio, "logging", "minio", BucketLoggingStatus);
+    golden!(logging_rustfs, "logging", rustfs = rustfs_values::logging());
+
+    golden!(website_aws, "website", "aws", WebsiteConfiguration);
+    golden!(website_minio, "website", "minio", WebsiteConfiguration);
+    golden!(website_rustfs, "website", rustfs = rustfs_values::website());
+
+    golden!(accelerate_aws, "accelerate", "aws", AccelerateConfiguration);
+    golden!(accelerate_minio, "accelerate", "minio", AccelerateConfiguration);
+    golden!(accelerate_rustfs, "accelerate", rustfs = rustfs_values::accelerate());
+
+    golden!(request_payment_aws, "request_payment", "aws", RequestPaymentConfiguration);
+    golden!(request_payment_minio, "request_payment", "minio", RequestPaymentConfiguration);
+    golden!(request_payment_rustfs, "request_payment", rustfs = rustfs_values::request_payment());
+
+    golden!(public_access_block_aws, "public_access_block", "aws", PublicAccessBlockConfiguration);
+    golden!(public_access_block_minio, "public_access_block", "minio", PublicAccessBlockConfiguration);
+    golden!(
+        public_access_block_rustfs,
+        "public_access_block",
+        rustfs = rustfs_values::public_access_block()
+    );
+}

crates/ecstore/tests/fixtures/bucket-config-goldens/README.md

@@ -0,0 +1,58 @@
+# Persisted bucket-configuration XML goldens (rustfs/backlog#2744)
+
+Byte-level goldens for the 13 XML families that `BucketMetadata` persists as
+`*_config_xml`. They pin what `rustfs_ecstore::api::bucket::utils::deserialize`
+followed by `serialize` emits today, so that the DTO/codec replacement (T1.4)
+and the persisted-bytes comparison (T3.7) can be proven byte-identical: an
+older binary must keep reading what a newer one writes, and the reverse.
+
+Generated at commit: `6b1554003ebf8f2037ffb7da9c9b906527e758da` (2026-10-07T17:40:56Z)
+
+Checked by `crates/ecstore/tests/bucket_config_goldens.rs`
+(`cargo nextest run -p rustfs-ecstore bucket_config_goldens`, 39 tests).
+Generated once by `scripts/gen_bucket_config_goldens.sh`, which records the
+commit above and refuses to run again unless `--force` is passed. Do not
+regenerate after a DTO or codec replacement: at that point a diff here is the
+finding, not noise.
+
+## Layout
+
+`<family>/<shape>.in.xml` is an input; `<family>/<shape>.out.xml` is the exact
+bytes of `serialize(deserialize(in))` on the generating commit. The test
+asserts `bytes == out` (never structural equality), that `out` is a fixed point
+of the same round trip, and for the `rustfs` shape that `serialize(typed
+value)` still equals `rustfs.in.xml`.
+
+| Shape | Source |
+| --- | --- |
+| `aws` | Written for this corpus from the public S3 XML schema in the shape of the AWS documentation examples: XML declaration, `xmlns` on the root, indented. No AWS prose is copied. |
+| `minio` | The bytes a MinIO server persists. Seven families are carved verbatim out of `../minio/bucket_metadata.blob.hex` (MinIO `RELEASE.2025-07-23T15-54-02Z`); the rest are hand-shaped as compact Go `encoding/xml` output with the S3 namespace on the root, because MinIO does not persist those families. |
+| `rustfs` | The bytes RustFS writes today through `serialize` for a typed value (`rustfs_values` in the test). This shape carries the MinIO-only members RustFS accepts (`DelMarkerExpiration`, `ExcludeFolders`, `ExcludedPrefixes`, `DeleteReplication`). |
+
+| Family | Root element | `minio.in.xml` provenance |
+| --- | --- | --- |
+| `notification` | `NotificationConfiguration` | MinIO fixture |
+| `lifecycle` | `LifecycleConfiguration` | MinIO fixture (carries the MinIO `ExpiryUpdatedAt` extension) |
+| `object_lock` | `ObjectLockConfiguration` | MinIO fixture |
+| `versioning` | `VersioningConfiguration` | MinIO fixture |
+| `encryption` | `ServerSideEncryptionConfiguration` | MinIO fixture |
+| `tagging` | `Tagging` | MinIO fixture |
+| `replication` | `ReplicationConfiguration` | MinIO fixture |
+| `cors` | `CORSConfiguration` | hand-shaped |
+| `logging` | `BucketLoggingStatus` | hand-shaped |
+| `website` | `WebsiteConfiguration` | hand-shaped |
+| `accelerate` | `AccelerateConfiguration` | hand-shaped |
+| `request_payment` | `RequestPaymentConfiguration` | hand-shaped |
+| `public_access_block` | `PublicAccessBlockConfiguration` | hand-shaped |
+
+## Unknown elements
+
+`replication/aws.in.xml` is the unknown-element sample from
+`crates/replication/src/config.rs`
+(`s3_xml_parser_discards_unknown_replication_elements_before_validation`),
+re-indented to two spaces. Its golden proves the root-level `FutureTopLevel`
+element is skipped on read and never re-emitted on write, which is the
+persisted-configuration exception recorded in the root `AGENTS.md`. On the
+generating commit every one of the 13 root elements skips unknown children;
+nested members (`Rule`, `Filter`, `Destination`, ...) reject them. A
+replacement codec must keep that boundary where it is.

crates/ecstore/tests/fixtures/bucket-config-goldens/accelerate/aws.in.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<AccelerateConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
+  <Status>Enabled</Status>
+</AccelerateConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/accelerate/aws.out.xml

@@ -0,0 +1 @@
+<AccelerateConfiguration><Status>Enabled</Status></AccelerateConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/accelerate/minio.in.xml

@@ -0,0 +1 @@
+<AccelerateConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Status>Suspended</Status></AccelerateConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/accelerate/minio.out.xml

@@ -0,0 +1 @@
+<AccelerateConfiguration><Status>Suspended</Status></AccelerateConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/accelerate/rustfs.in.xml

@@ -0,0 +1 @@
+<AccelerateConfiguration><Status>Suspended</Status></AccelerateConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/accelerate/rustfs.out.xml

@@ -0,0 +1 @@
+<AccelerateConfiguration><Status>Suspended</Status></AccelerateConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/cors/aws.in.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
+  <CORSRule>
+    <ID>AllowWebApp</ID>
+    <AllowedOrigin>https://www.example.com</AllowedOrigin>
+    <AllowedMethod>PUT</AllowedMethod>
+    <AllowedMethod>POST</AllowedMethod>
+    <AllowedMethod>DELETE</AllowedMethod>
+    <AllowedHeader>*</AllowedHeader>
+    <ExposeHeader>x-amz-server-side-encryption</ExposeHeader>
+    <MaxAgeSeconds>3000</MaxAgeSeconds>
+  </CORSRule>
+  <CORSRule>
+    <AllowedOrigin>*</AllowedOrigin>
+    <AllowedMethod>GET</AllowedMethod>
+  </CORSRule>
+</CORSConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/cors/aws.out.xml

@@ -0,0 +1 @@
+<CORSConfiguration><CORSRule><AllowedHeader>*</AllowedHeader><AllowedMethod>PUT</AllowedMethod><AllowedMethod>POST</AllowedMethod><AllowedMethod>DELETE</AllowedMethod><AllowedOrigin>https://www.example.com</AllowedOrigin><ExposeHeader>x-amz-server-side-encryption</ExposeHeader><ID>AllowWebApp</ID><MaxAgeSeconds>3000</MaxAgeSeconds></CORSRule><CORSRule><AllowedMethod>GET</AllowedMethod><AllowedOrigin>*</AllowedOrigin></CORSRule></CORSConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/cors/minio.in.xml

@@ -0,0 +1 @@
+<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><CORSRule><ID>console</ID><AllowedOrigin>https://console.example.internal</AllowedOrigin><AllowedMethod>GET</AllowedMethod><AllowedMethod>HEAD</AllowedMethod><AllowedHeader>Authorization</AllowedHeader><AllowedHeader>Content-Type</AllowedHeader><ExposeHeader>ETag</ExposeHeader><MaxAgeSeconds>600</MaxAgeSeconds></CORSRule></CORSConfiguration>

crates/ecstore/tests/fixtures/bucket-config-goldens/cors/minio.out.xml

@@ -0,0 +1 @@
+<CORSConfiguration><CORSRule><AllowedHeader>Authorization</AllowedHeader><AllowedHeader>Content-Type</AllowedHeader><AllowedMethod>GET</AllowedMethod><AllowedMethod>HEAD</AllowedMethod><AllowedOrigin>https://console.example.internal</AllowedOrigin><ExposeHeader>ETag</ExposeHeader><ID>console</ID><MaxAgeSeconds>600</MaxAgeSeconds></CORSRule></CORSConfiguration>