 Ping QiuandClaude Opus 4.6
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a107685f00
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feat: Phase 4A CP1 — epoch, lease, role state machine, write gate
Local fencing primitives for block volumes. Every write path validates
role + epoch + lease before accepting data. RoleNone (default) skips
all checks for Phase 3 backward compatibility.
New files: epoch.go, lease.go, role.go, write_gate.go
Modified: superblock.go (Epoch field), blockvol.go (fencing fields,
writeGate in WriteLBA/Trim), group_commit.go (PostSyncCheck/Gotcha A),
dirty_map.go (P3-BUG-9 power-of-2 panic)
Bug fixes: BUG-4A-1 (atomic epoch), BUG-4A-2 (CAS SetRole),
BUG-4A-3 (mutex SetEpoch), BUG-4A-4 (single role.Load),
BUG-4A-6 (safeCallback recover)
837 tests (557 engine + 280 iSCSI), all passing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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2026-03-01 16:00:06 -08:00 |
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Ping QiuandClaude Opus 4.6
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80801b0fac
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feat: Phase 3 — performance tuning, iSCSI session refactor, store integration
Phase 3 delivers five checkpoints:
CP1 Engine Tuning: BlockVolConfig tunables, 256-shard DirtyMap, adaptive
group commit (low-watermark immediate flush), WAL pressure handling with
backpressure and ErrWALFull timeout.
CP2 iSCSI Session Refactor: RX/TX goroutine split with respCh (cap 64),
txLoop for serialized response writes, StatSN assignment modes. Login
phase stays single-goroutine; full-duplex after login.
CP3 Store Integration: BlockVolAdapter (iscsi.BlockDevice interface),
BlockVolumeStore management, BlockService in volume_server_block.go,
CLI flags (--block.listen/dir/iqn.prefix), sw-block-attach.sh helper.
CP5 Concurrency Hardening: WAL reuse guard (LSN validation in ReadLBA),
opsOutstanding counter with beginOp/endOp + Close drain, appendWithRetry
shared by WriteLBA and TrimLBA, flusher LSN guard in FlushOnce.
Bug fixes (P3-BUG-2–11): unbounded pending queue cap, Data-Out timeout,
flusher error logging, GroupCommitter panic recovery, Close vs concurrent
ops guard, target shutdown race, WAL-full retry vs Close, WRITE SAME(16)
for XFS, MODE SENSE(10) + VPD 0xB0/0xB2 for Linux kernel compatibility.
797 tests passing (517 engine + 280 iSCSI), go vet clean.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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2026-03-01 10:43:34 -08:00 |
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