  pingqiuandClaude Opus 4.6
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39f1232fe2
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feat: validation matrix closure — Rebuild Ready 12/12, Restore Ready 10/10
Close all Rebuild Ready and Restore Ready matrix gaps. V2 Ready at 10/14
(2 partial, 2 missing — honest assessment).
New tests (tester-written):
- R1: syncAck-driven trigger via protocol engine decision
- R3: stale replica restart beyond WAL → rebuild converges
- R5: connection drop mid-base → cancel → fresh rebuild converges
- R10: failover-rejoin with forced WAL recycling, strict rebuild assert
- R11: divergent replica full overwrite convergence
- R12: crash mid-rebuild → fresh session converges (not resume)
- S2: corrupt WAL entry + corrupt base block both rejected
- S5: snapshot-tail rebuild (base + WAL tail replay)
- S7: crash between base install and tail replay
- S8: snapshot under concurrent writes
- V5: rebuild complete without DurableLSN blocks publish_healthy
- V9: mixed replica health aggregate projection
- V14: negative fail-closed matrix (epoch, kind, stale)
Bug fix: StartRebuildSession now clears stale dirty map + resets WAL +
updates checkpoint AFTER safety check but BEFORE session.Start(). Fixes
stale extent data shadowing rebuild base blocks on reopened replicas.
Cleanup: remove 14 obsolete design docs (migration batches, old WAL-v2
specs, simulator goals) — all superseded by current protocol docs.
34 component tests + 8 protocol engine tests + server tests all pass.
1GB CRC validation passes in 19s.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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2026-04-08 16:31:55 -07:00 |
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pingqiuandClaude Opus 4.6
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d2d57851b0
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feat: rebuild MVP — dual-lane session with bitmap protection
Rebuild session protocol implementation for v2-rebuild-mvp-session-protocol.md.
New files:
- rebuild_bitmap.go: RebuildBitmap — session-scoped dense bitset for
WAL-applied LBA tracking. MarkApplied on local WAL write (not receive).
ShouldApplyBase returns false for WAL-covered LBAs (WAL always wins).
- rebuild_session.go: RebuildSession — replica-side two-line rebuild.
WAL lane (ApplyWALEntry) + base lane (ApplyBaseBlock) with bitmap
conflict resolution. TryComplete requires BOTH base_complete AND
wal_applied_lsn >= target_lsn. Volume-level control surface:
StartRebuildSession, ApplyRebuildSessionWALEntry/BaseBlock,
MarkRebuildSessionBaseComplete, TryCompleteRebuildSession,
CancelRebuildSession, ActiveRebuildSession.
- rebuild_mvp_test.go: 4 correctness tests — base+WAL converge,
WAL-applied never overwritten by base, bitmap set on applied not
received, control surface start/supersede/complete.
- rebuild_transport_test.go: 2 transport-level tests — two-line with
real WAL shipping, live writes during base copy with bitmap conflict.
Design docs:
- v2-rebuild-mvp-session-protocol.md: MVP spec with message set, apply
rules, completion/failure/crash rules, test matrix
- v2-sync-recovery-protocol.md: full protocol context (keepup/catchup/
rebuild unified design, primary decision logic, two-line model)
- v2-session-protocol-shape.md: protocol shape overview
Protocol engine (reference, not production):
- sw-block/protocol/: 7-event engine with ~300 lines, 13 tests
6 rebuild tests pass, all existing component tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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2026-04-07 14:30:34 -07:00 |
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