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Author SHA1 Message Date
pingqiuandClaude Opus 4.6 785a7d7efd feat: wire real pinner into flusher retention + real WAL scan executor (Phase 07 P1) 
Pinner wired to real retention:
- NewPinner calls vol.SetV2RetentionFloor(p.MinWALRetentionFloor)
- Flusher.RetentionFloorFn() / SetRetentionFloorFn() exposed
- SetV2RetentionFloor chains with existing shipper retention floor
- Holds actually prevent WAL reclaim (not just tracked state)

Executor uses real WAL scan:
- BlockVol.ScanWALEntries(fromLSN, callback) wraps wal.ScanFrom
  with real fd, walOffset, checkpointLSN
- Executor.StreamWALEntries uses ScanWALEntries (not stub)
- Reads real WAL entries, tracks highest LSN scanned

CommittedLSN mapping:
- Explicitly documented as interim V1 model (committed = checkpointed)
- Will diverge when V2 distributed commit separates from local flush

Carry-forward:
- TransferSnapshot/TransferFullBase/TruncateWAL: stubs (need extent I/O)
- Control intent from confirmed failover: deferred

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-30 20:01:46 -07:00
pingqiuandClaude Opus 4.6 c00c9e3e3d feat: add real BlockVolPinner + BlockVolExecutor in v2bridge (Phase 07 P1) 
Pinner (pinner.go):
- HoldWALRetention: validates startLSN >= current tail, tracks hold
- HoldSnapshot: validates checkpoint exists + trusted
- HoldFullBase: tracks hold by ID
- MinWALRetentionFloor: returns minimum held position across all
  WAL/snapshot holds — designed for flusher RetentionFloorFn hookup
- Release functions remove holds from tracking map

Executor (executor.go):
- StreamWALEntries: validates range against real WAL tail/head
  (actual ScanFrom integration deferred to network-layer wiring)
- TransferSnapshot/TransferFullBase/TruncateWAL: stubs for P1

Key integration points:
- Pinner reads real StatusSnapshot for validation
- Pinner.MinWALRetentionFloor can wire into flusher.RetentionFloorFn
- Executor validates WAL range availability from real state

Carry-forward:
- Real ScanFrom wiring needs WAL fd + offset (network layer)
- TransferSnapshot/TransferFullBase need extent I/O
- Control intent from confirmed failover (master-side)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-30 19:54:24 -07:00