## Related Issues rustfs/backlog#2682 and rustfs/rustfs#8192. ## Summary of Changes Reviewedca970f55ecagainstd2175d1e1e. No blocking code findings. The hold requires a completed healthy legacy check and an exact incarnation, lease, object, version and scope; it preserves the durable journal and rechecks on restart. ## Verification Two independent source reviews completed, covering the lenses below. The frozen diff matches Git and passes diff whitespace checks. Reported Cargo and Docker results were not rerun or independently audited in this review. One factual correction to the PR description: `legacy_sigkill_replay_repairs_without_releasing_unverified_responsibility` uses the default four-member fixture, with three replicas before restoration and four afterward (`mrf_partial_write_test.rs:559,567`). That named regression exercises the production manager path, but is not EC12+4. Other tests in the file use sixteen disks. ## Impact Correctness: no findings; proofless legacy health never becomes a verified receipt. Security/trust: no findings; exact identity fences remain. Compatibility: no findings; journal encoding remains unchanged. Concurrency/durability: no findings; replay retains one checkpointed owner and replacement generations become retryable. Simplicity: no findings. Coverage: no blocking gap identified, with the test-scope correction above. Performance: no findings; held entries leave the retry index without adding per-admission queue scans. ## Additional Notes The current main journal failure concerns DecodeFailure, which follows the separate ECDecode task path. This review does not establish that this PR fixes that failure or the scanner-cycle failure, and does not establish a passing main CI or release gate.
Documentation
Use the focused indexes rather than treating this directory as an unordered collection:
Operations
For the logical per-operation io_uring read cap, see io_uring read chunk size.
For bounded local read-backend startup and cancellation, see io_uring backend initialization.
For legacy protection assessment and bounded protected copies, see Object integrity inventory, audit, and migration.
Operational runbooks live under operations/. Replication
operators should start with:
| Runbook | Use it for |
|---|---|
| Site replication operations | Health fields, pending operations, outage recovery, re-pair admission, IAM/SSE boundaries, and upgrades. |
| Replication target check | Validating an S3 destination and version fidelity before enabling replication. |
| Replication object size limits | Multipart routing, large-object limits, and retry characteristics. |
| Replication outbound transport | Integrity headers, generic target behavior, and transport knobs. |
For the erasure-coded cluster lifecycle (planning, parity and EC:0,
expansion, rebalance, decommission, heal, drive replacement, restart
recovery, and the rc CLI mapping), start with
Cluster and erasure-coding lifecycle operations.
For persisted administrator bucket tasks and bucket recreation, see Bucket heal recovery.
For disk replacement across VM restarts and schema 5/6 maintenance migration, see Replacement generation recovery.
For historical GET timeouts during PUT or Heal, see Object lock contention diagnostics.
Other runbooks remain grouped by filename in operations/;
architecture pages link to the relevant runbook where a cross-boundary
procedure is required.
For storage dashboards, see Storage metrics and observer selection: drive ownership, snapshot freshness, counter queries, and rolling upgrades.
For optional shard commitments, see Independent shard integrity rollout: activation, legacy repair results, multipart mode changes, and rollback limits.
For crates.io publication of workspace crates, see Workspace Cargo Publish: dependency ordering, dry-run, publish, and failure handling.