* fix(scanner): treat replication status writebacks as status-class hits A replication status writeback (persist_replication_state_if_current in Update mode, including the heals the scanner queues during its own walk) marked the bucket dirty on the namespace path: it advanced the dirty-usage generation, woke the scanner, reached the durable dirty journal and entered the activity snapshot. Any replicated bucket therefore made every scanner cycle Superseded, the authoritative usage baseline was never certified and usage freshness stayed stale for as long as replication ran (#8375). The writeback is now status class: record_status_class_mutation records only the process-local producer coverage bit and nothing else. There is no rescan queue for it, because a deployment with an active replication rule already walks every bucket on every cycle (ScannerMaintenanceFeatures::needs_regular_cycle) and that walk refreshes replication_stats. The routing lives in a named, unit-tested function in rustfs/src/storage/storage_api.rs; tier-expiration cleanup removes data and stays on the namespace path. No persisted format, protocol, admin API or configuration changes. This is phase 1 of docs/architecture/scanner-per-bucket-convergence.md, which this change adds together with its index entry. Refs #8375, #8494, rustfs/backlog#2816. * fix(scanner): refresh replication statistics during maintenance Refresh compacted prefixes and completed bucket caches during replication maintenance. Bind set execution reuse to the observed replication statistics so a same-cycle retry cannot restore older counters. Co-Authored-By: heihutu <heihutu@gmail.com> Co-Authored-By: zhi22915 <qiuzgang@gmail.com> * test(scanner): avoid expanding the legacy S3 DTO surface Decode the existing replication configuration type from a JSON fixture instead of adding direct S3 DTO references to a new file. Preserve the compacted-prefix and same-cycle assertions and the footprint ratchet. Co-Authored-By: heihutu <heihutu@gmail.com> Co-Authored-By: zhi22915 <qiuzgang@gmail.com> * test(ecstore): seed the ordinary-timeout peer fixture under the default drive deadline The one-second ENV_DRIVE_MAX_TIMEOUT_DURATION in target_ordinary_timeout_keeps_its_physical_namespace_owner wrapped the whole test, so the fixture's write_metadata and the final read_version were bounded by it too. On a loaded CI runner the seed took longer than a second and the test failed with "seed real metadata: Timeout" before the paused rename under test ran. Only the rename now runs under the one-second deadline; the fixture and the tail read use the default. --------- Co-authored-by: Hauser <housemecn@gmail.com> Co-authored-by: heihutu <heihutu@gmail.com> Co-authored-by: zhi22915 <qiuzgang@gmail.com> Co-authored-by: overtrue <anzhengchao@gmail.com>
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Architecture Documentation
Use this when: you need the contract, invariant, or boundary rule that governs a change, and you want the one document that owns it.
Source of truth: the code and the guards. scripts/check_architecture_migration_rules.sh enforces the CI-anchored documents below; scripts/check_doc_paths.sh fails the pre-commit gate when any doc under docs/ cites a repository path that no longer exists.
Two rules keep this directory healthy:
- Durable reference only. One-shot plans, task trackers, dated analyses, status snapshots, and PR-scoped notes do not belong in the repository; keep them in the issue tracker or a local worktree and delete them when the work closes.
- No copies of other sources of truth. Crate lists come from
Cargo.toml, CI steps from.github/workflows/, code structure from the code. Cite a file path plus a symbol name, never a line number, and never paste counts or tables that a command can regenerate.
Every document starts with a **Use this when:** line so an agent can decide in one glance whether to read further. The index below repeats those lines.
CI-anchored core
Required headings and strings in these files are asserted by scripts/check_architecture_migration_rules.sh; rename a heading only together with the guard.
| Document | Use this when |
|---|---|
| crate-boundaries.md | you add a crate dependency, move code across crates, touch a storage_api.rs boundary file, or need the change-type vocabulary the architecture guard enforces |
| runtime-lifecycle.md | moving or reordering anything in rustfs/src/startup_*.rs, changing readiness publication, or touching shutdown ordering |
| readiness-matrix.md | changing what a request surface does before storage or IAM is ready, changing probe semantics, or adding a runtime dependency that readiness must wait for |
| storage-control-data-plane.md | adding a storage API surface, a cluster read model, or a background-service status/reconcile surface, and you need to know which layer owns it |
| global-state-crate-split-plan.md | business logic needs runtime state (object store, endpoints, lock clients, lifecycle state, config) and you must pick the right boundary, or you are evaluating a crate split out of ECStore |
| global-state-inventory.md | you meet a GLOBAL_* static or an OnceLock and need to know whether it is a runtime ownership handle, an owner-local static, or process-global by design |
| ecstore-module-split-plan.md | you add lifecycle or replication logic and need to know which crate it belongs in, plan to move an operation family out of SetDisks, or the guard fails on one of the split rules |
| ecstore-api-facade-inventory.md | you need something from rustfs_ecstore in another crate, you are narrowing a rustfs_ecstore::api facade group, or the guard reports a facade bypass |
| obs-ecstore-dependency-inventory.md | adding, removing, or moving any rustfs_ecstore or rustfs_storage_api reference inside crates/obs |
| compat-cleanup-register.md | you add, review, or remove a temporary compatibility path and need the RUSTFS_COMPAT_TODO marker format and its removal condition |
| overview.md | you need the historical framing of the architecture-migration program or the phase names that other contracts refer to |
Contracts and invariants
| Document | Use this when |
|---|---|
| local-descriptor-cache.md | changing descriptor cache keys/open modes or invalidation after local mutations |
| erasure-coding.md | changing anything under crates/ecstore/src/erasure/, crates/filemeta/, crates/ecstore/src/set_disk/, storage-class or layout code, or any decode, quorum, or heal boundary (normative spec) |
| placement-repair-invariants.md | changing anything that resolves an object to a pool, set, or disk, or that admits scanner or heal work |
| heal-concurrency-model.md | changing heal, PUT/multipart commit, delete, lifecycle expiry, or data-movement code that shares the (bucket, object) commit surface, or asking whether RustFS needs a persistent healing marker |
| heal-terminal-reports.md | changing retained admin heal outcomes, terminal report publication, cancellation refinement, or report upgrade/rollback behavior |
| unified-object-generation.md | adding or changing anything that fences a commit, scopes a read lease, gates old-directory cleanup, binds prepared pool reads, or settles quota against the current object version |
| ilm-tiering-persistence-contracts.md | changing an ILM transition, tier configuration mutation, manual transition job, tier-delete recovery path, pool decommission, or any code that can create, transfer, or destroy ownership of a remote-tier object |
| decommission-compatibility.md | changing pool decommission or rebalance behavior, its admin API shape, the persisted PoolMeta fields, or how tier free versions move between pools |
| ecstore-layout-boundary.md | touching endpoint expansion, FormatV3, pool/set layout, or moving files between ECStore's internal directories |
| runtime-capability-contracts.md | changing the read-only observability or topology snapshot contracts in rustfs-storage-api, their providers, or the storage_classes payload of GET /rustfs/admin/v4/runtime/capabilities |
| workload-admission-contracts.md | adding a workload class or snapshot provider, or consuming admission state from a background job |
| background-controller-contract.md | adding a status snapshot or reconcile surface for a background service, or being tempted to fold several services into a generic controller |
| background-services-inventory.md | you need one audited background service's desired source, current-status inputs, status surface, and declared side effects |
| scanner-usage-publication.md | changing scanner data-usage cache publication, quota-visible usage snapshots, scanner cycle recovery, or the persisted scanner usage artifacts |
| scanner-usage-authority-decision.md | deciding whether quota admission depends on scanner data usage, removing scanner publication layers, or designing a scanner storage boundary |
| scanner-per-bucket-convergence.md | changing what makes a scanner cycle Complete, Superseded, or converged, adding or re-classifying a dirty-usage producer, deciding whether a background writeback may invalidate a cycle, changing scanner worker concurrency or throttling, or activating scoped dirty acknowledgements |
| config-model-boundary-adr.md | touching the server-config model (Config, KV, KVS) or its persistence, or asking which crate owns which part of server configuration |
| admin-route-action-snapshot.md | adding, moving, or re-authorizing an admin route and needing to know where the route → handler → AdminAction contract is enforced |
| kms-bulk-rekey-contract.md | changing the bulk envelope re-wrap sweep, its admin endpoints, the re-wrap primitive, or which objects a rekey may touch |
| remote-credential-sealing-adr.md | adding, reading, or persisting a stored remote credential (replication target, remote tier, on-demand migration source), or needing the sealed-envelope format, the mixed-version rules, or the reason this is worth doing in one deployment and not in another |
| tier-stats-contract.md | changing what GET /rustfs/admin/v3/tier-stats returns, adding a tier accounting source, or wiring a metric to a remote tier request |
Support and compatibility matrices (release-facing, keep current)
| Document | Use this when |
|---|---|
| s3-compatibility-matrix.md | writing or checking a user-facing S3 compatibility claim, or moving a Ceph s3tests case between lists |
| s3-tables-support-matrix.md | writing a release note or client-compatibility statement about S3 Tables / Iceberg REST Catalog (cutover procedure: ../operations/s3-tables-cutover-runbook.md) |
| minio-rustfs-router-compatibility.md | a client or mc call that works against MinIO fails against RustFS and you need to know whether the endpoint is missing, stubbed, or deliberately different |
| minio-file-format-compat.md | deciding whether a MinIO drive set, bucket-metadata blob, or SSE object can be read or imported by a given RustFS build, or before touching a listed version anchor |
Operations runbooks are registered in the documentation operations index, and testing references live in ../testing/README.md.
For replication operations, start with site replication operations, replication target check, replication object size limits, and replication outbound transport.
For per-node HTTP failure ratios and cached storage probe provenance, see S3 write failure diagnostics.