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Zhengchao An
40cd10c1d0
SizeSummary::tier_stats was populated for every scanned object but apply_scanner_size_summary dropped it, so per-tier usage never reached DataUsageInfo. Wire it through the same merge chain repl_target_stats already uses, up to DataUsageInfo::tier_stats. DataUsageEntry used the derived MessagePack encoding, which serialises structs as arrays: appending a field turns the whole cache into a decode error for older readers, so mixed-version nodes would invalidate each other's cache every scan cycle. Give it the same hand-written map-encoded Serialize DataUsageCacheInfo already carries, and record the invariant in AGENTS.md. Widen TierStats counters from i32 to u64 so a tier past 2^31 versions cannot make checked_merge reject an entire usage snapshot, and drop the duplicate TierStats/AllTierStats definitions in the scanner crate in favour of the data-usage ones.
RustFS Scanner
RustFS Scanner is the background maintenance scan loop. It handles usage accounting, lifecycle expiry and transition admission, bucket replication repair admission, scanner-driven heal/bitrot checks, and namespace alerts.
For operator-facing runtime controls, status fields, and tuning workflows, see Scanner Runtime Controls. For repeatable scanner-pressure validation, see Scanner Benchmark Runbook.
Chinese documentation is available in README.zh-CN.md.
Development
Build
cargo build --package rustfs-scanner
Test
cargo test --package rustfs-scanner
License
Apache License 2.0