Ping Qiu and Claude Opus 4.6
c39080ceaa
feat: Phase 4A CP4b-4 -- HA integration tests, admin HTTP, 5 bug fixes
...
Add HTTP admin server to iscsi-target binary (POST /assign, GET /status,
POST /replica, POST /rebuild) and 7 HA integration tests validating
failover, split-brain prevention, epoch fencing, and demote-under-IO.
New files:
- admin.go: HTTP admin endpoint with input validation
- ha_target.go: HATarget helper wrapping Target + admin HTTP calls
- ha_test.go: 7 HA tests (all PASS on WSL2, 67.7s total)
Bug fixes:
- BUG-CP4B4-1: CmdSN init (expCmdSN=0 not 1, first SCSI cmd was dropped)
- BUG-CP4B4-2: RoleNone->RoleReplica missing SetEpoch (WAL rejected)
- BUG-CP4B4-3: replica applyEntry didn't update vol.nextLSN (status=0)
- BUG-CP4B4-4: PID discovery killed primary instead of replica (shared
binPath; fixed by grepping volFile)
- BUG-CP4B4-5: artifact collector overwrote primary log with replica log
(added CollectLabeled method)
Also: 3s write deadline on WAL shipper data connection to avoid 120s TCP
retransmission timeout when replica is dead.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com >
2026-03-02 15:04:59 -08:00
Ping Qiu and Claude Opus 4.6
09c7e40d29
feat: Phase 4A CP4a -- simulated master, assignment sequence tests, BlockVolumeStatus
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Add SimulatedMaster test helper + 20 assignment sequence tests (8 sequence,
5 failover, 5 adversarial, 2 status). Add BlockVolumeStatus struct and
Status() method. Includes QA test files for CP1-CP4a. 940 total unit tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com >
2026-03-02 09:33:45 -08:00
Ping Qiu and Claude Opus 4.6
80801b0fac
feat: Phase 3 — performance tuning, iSCSI session refactor, store integration
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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 >
2026-03-01 10:43:34 -08:00
Ping Qiu and Claude Opus 4.6
6a400f6760
feat: add BlockVol engine and iSCSI target (Phase 1 + Phase 2)
...
Phase 1: Extent-mapped block storage engine with WAL, crash recovery,
dirty map, flusher, and group commit. 174 tests, zero SeaweedFS imports.
Phase 2: Pure Go iSCSI target (RFC 7143) with PDU codec, login
negotiation, SendTargets discovery, 12 SCSI opcodes, Data-In/Out/R2T
sequencing, session management, and standalone iscsi-target binary.
164 tests. IQN->BlockDevice binding via DeviceLookup interface.
Total: 338 tests, 14.6K lines.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com >
2026-02-28 09:32:01 -08:00
