BucketMetadataSys::get_config lazily fabricated a default BucketMetadata
(object-lock off) for any bucket whose .metadata.bin was ConfigNotFound and
cached it in the map that the map-only, fail-closed metadata_sys::get()
serves. The object-lock batch-delete gate (object_lock_delete_check_required,
backlog#929 / #4297) treats that map as authoritative, so a metadata miss
became a cached "no lock" answer: a versioning peek could poison the cache
and let delete_objects skip the per-object retention/legal-hold stat. The
same fabrication raced make_bucket (lost update overwriting freshly
persisted lock-enabled metadata) and let the 15-minute refresh loop replace
good cached metadata on a transient quorum dip.
Production changes:
- get_config caches only metadata actually read from disk; misses are
recorded in a bounded negative cache (30s TTL, 10k entries, invalidated by
set()) so repeated lookups for metadata-less names cost no extra
namespace-lock + erasure-set fanout (reachable pre-auth via CORS
preflight and per-key in DeleteObjects).
- concurrent_load never lets a fabricated default REPLACE an existing map
entry; startup insert-if-vacant behavior for legacy buckets is preserved.
- delete_objects and new_ns_lock resolve dist-erasure, versioning, and the
object-lock gate from the set's own instance context (backlog#1052)
instead of the ambient facade, so a second in-process instance (or, in
tests, another test's transient DistErasure window) cannot reroute
locking onto an empty dist locker list or answer with the wrong
instance's bucket state.
Test-isolation changes (the bug that surfaced all of the above: the
delete_objects lock-gating test failed deterministically when sharing a
process with the lifecycle env tests):
- The MinIO-migration test builds on an isolated InstanceContext instead of
registering soon-deleted disks in the shared bootstrap registry.
- The cached lifecycle env re-registers its disks on every use, surviving
other serial tests' reset_local_disk_test_state.
- Hermetic SetDisks helpers gain isolated-context variants pinned to plain
erasure; tier-free non-serial test modules use them, guard-based
SetupTypeGuard tests stay on the bootstrap context.
- Three deterministic pin tests (nextest-safe) cover the caching contract,
the delete gate resolution source, and the ns-lock resolution source.
Verification:
- cargo test -p rustfs-ecstore --lib -- --exact <4-test combo from the
report> (previously failing, now green)
- cargo test -p rustfs-ecstore --lib: 3169 passed / 0 failed across
repeated runs; cargo fmt --check and cargo clippy --lib --tests clean
- Adversarial validation (high-risk tier, all seven roles) run per
AGENTS.md; all findings fixed or rebutted with evidence
fix(ecstore): reject renewing a misplaced drive into the wrong set (backlog#799 B19)
`renew_disk` located the drive's (set, disk) position from its own format via
`find_disk_index`, but never checked that the resolved `set_idx` matched this
`SetDisks`' own `set_index` before inserting the drive into `self.disks`. A
drive whose format places it in another set would be claimed by this set too,
so two sets could manage the same drive and degrade together.
Skip (with a warning) when `set_idx != self.set_index`.
Refs backlog#799 (B19), tracked in rustfs/backlog#863.
cxymds