Files
rustfs/.agents/skills/tier-debug/SKILL.md
T
Zhengchao An d1db9a10cd chore(docs): refresh agent docs, guard doc paths, archive plans (#4203)
Agent-instruction and architecture docs had drifted from the code:

- CLAUDE.md: slim to commands + pointers; fix wrong claim that
  `make pre-commit` is the full pre-PR gate (that is `make pre-pr`);
  drop stale pre-#3929 file paths and merged bug narratives
- AGENTS.md: drop dead `rust-refactor-helper` skill rule and the
  hand-maintained (already stale) scoped-AGENTS index; link
  architecture docs from Sources of Truth
- .github/AGENTS.md: replace the outdated copied CI command matrix
  with a pointer to ci.yml
- crates/AGENTS.md: merge duplicated Testing sections
- ARCHITECTURE.md: resolve the utils->config contradiction (edges are
  removed), mark volatile counts as snapshots, fix a bad path
- docs/architecture: add README router; move one-shot plans/trackers
  (rebalance-decommission phases, migration-progress ledger, PR
  template) to docs/superpowers/plans with archive headers; fix stale
  source paths in kept inventories (core/sets.rs, core/pools.rs,
  store/mod.rs, startup_* split from #3671)
- docs/operations/tier-ilm-debugging.md: extracted tier debugging
  playbook with corrected paths
- scripts/check_doc_paths.sh: new guard failing pre-commit/pre-pr when
  instruction/architecture docs reference nonexistent file paths
- .claude/skills: add tier-debug and arch-checks repo skills;
  .gitignore now keeps .claude/skills and docs/operations committable

Verification: ./scripts/check_doc_paths.sh,
./scripts/check_architecture_migration_rules.sh (both pass)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-02 23:30:13 +08:00

1.4 KiB

name, description
name description
tier-debug Debug ILM tiering / lifecycle transition issues — NoSuchVersion on tier GET, restore failures, xl.meta inspection, remote-tier versionId tracing. Use when investigating tiered/transitioned objects, warm backends, or transition metadata.

Tier / ILM Debugging

Full playbook: docs/operations/tier-ilm-debugging.md — read it before changing tier code.

Quick moves:

# Inspect transition metadata on disk (one xl.meta per erasure shard disk)
cargo run -p rustfs-filemeta --example dump_fileinfo -- "/path/to/{bucket}/{object}/xl.meta"

# Trace what versionId is sent to the remote tier
RUST_LOG=rustfs_ecstore::bucket::lifecycle=debug ./target/debug/rustfs …

Interpretation:

  • transition_ver_id: <none> → correct for an unversioned tier bucket; no versionId must be sent on tier GET/DELETE.
  • transition_ver_id: 00000000-… (nil) → corrupt legacy write-back; readers must filter it out, never send it.
  • Empty-string transitioned-versionID metadata under both x-rustfs-internal-* and x-minio-internal-* keys → object went to an unversioned tier bucket.

Code entry points: crates/ecstore/src/bucket/lifecycle/bucket_lifecycle_ops.rs (ILM actions), crates/ecstore/src/services/tier/ (warm backends), crates/filemeta/src/filemeta/version.rs (metadata read/write + regression tests).