Files
rustfs/docs
Chris 7a32ca2adb fix(replication): skip the replica ETag audit for encrypted sources (#8573)
New encrypted writes store a keyed HMAC fingerprint as the object ETag
(docs/operations/encrypted-etags.md). Replication forwards that ETag on
x-rustfs-source-etag, but a target that computes its own ETag (AWS S3 and
most compatible stores) answers the plaintext PUT with the MD5 of what it
received. Both values are 32 hex characters, so verify_single_part_replica
treated the fingerprint as a comparable MD5 and failed every single-part
SSE-S3 / SSE-KMS replica with "replica etag mismatch"; MRF and resync then
retried the object forever. RustFS and MinIO targets adopt the source ETag
and were unaffected.

Exempt sources whose stored ETag cannot describe the wire bytes: any
managed-SSE or SSE-C source, decided by the existing replication
source-encryption classifier. The checksum header on the replication PUT
remains the integrity check for those objects; plaintext sources keep the
audit unchanged.


Claude-Session: https://claude.ai/code/session_01CezCdjE9AdShFUi9tNk797

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
2026-10-15 22:01:08 +08:00
..

Documentation

Use the focused indexes rather than treating this directory as an unordered collection:

Operations

For PUT cleanup admission, blocking-pool isolation, and optional CPU affinity, see PUT cleanup isolation.

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.

For encrypted listing compatibility and older stored fingerprints, see Encrypted object ETags.

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 concurrent bucket creation and deletion, see Bucket operation admission.

For persisted administrator bucket tasks and bucket recreation, see Bucket heal recovery.

For interrupted object deletions and returning drives, see Delete transaction 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 per-bucket capacity and object counts, see Bucket usage metrics: OTLP export, cluster deduplication, accounting semantics, and scanner freshness.

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.