Files
rustfs/docs
Chris 2534b6175b fix(scanner): startup gates back off, rebuild and run degraded (#8695)
* fix(scanner): give startup gates automatic exits instead of a pause

Every fail-closed scanner gate now has a bounded automatic exit without
deleting quarantine evidence or relaxing the leader, CAS, movement or
usage-floor fences (rustfs/backlog#2901).

- Recovery retries back off instead of pausing: after the short budget the
  observation reads `backoff`, stays retryable, names the next attempt and is
  capped at ten minutes; one success resets the count and a 24 h window
  restarts the budget (rustfs/rustfs#8297, #8670). The usage-floor failure no
  longer carries the retry count across attempts.
- A corrupt `.bloomcycle.bin` is rebuilt on the iteration after its quarantine
  marker is durable: the fenced leadership claim CAS-replaces the quarantined
  revision under a higher epoch and the marker stays as evidence.
  `future_schema` and `cleanup-pending` remain blocked.
- An unclaimable pause ledger runs the leader degraded: cycles run untracked
  behind the data-movement fence, `persistence_state` reports `degraded`, and
  the claim is retried at most every five minutes (rustfs/rustfs#8251).
- The usage-state full-rebuild reset starts from the empty baseline when every
  usage slot is corrupt and no cycle state exists (rustfs/rustfs#8670, #6951).
- A cycle-state save reconciles non-conflict failures against durable state
  and retries under the same epoch; an exhausted save reloads durable state in
  place. Only a newer owner or an unreadable primary ends the iteration, so
  peers see a changed fence only when ownership changed (rustfs/rustfs#8141).

* test(scanner): align usage-state reset tests with the empty-baseline rebuild

The full-rebuild reset no longer refuses corrupt or identity-less usage slots
when no cycle state exists (rustfs/rustfs#8670). The two tests that encoded
that refusal now check the new contract: the reset starts from the empty
baseline with a bootstrap-pending marker, never an authoritative zero floor,
and a valid backup still supplies the recovery floor.

---------

Co-authored-by: cxymds <cxymds@gmail.com>
2026-10-19 17:49:00 +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.

For durable hard quota accounting, node-outage behavior, and fence protocol upgrades, see Durable hard quotas.

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.