 Ping QiuandClaude Opus 4.6
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3557ae283f
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feat: Phase 10 CP10-3 -- NVMe/TCP Tier 1 optimizations, WAL admission control, benchmark platform
CP10-3 Tier 1 optimizations (T1-T4):
- TCP_NODELAY + 256KB socket buffers on NVMe/TCP connections
- Response batching: all C2H data chunks + CapsuleResp in single flush
- Tiered buffer pool (4KB/64KB/256KB sync.Pool) for write payloads
- Configurable MaxH2CDataLength wiring through controller/IC/chunking
BUG-CP103-1: NVMe write retry with jittered backoff for transient WAL pressure
- writeWithRetry() with bounded backoff [50/200/800ms]
- throttleOnWALPressure() pre-write delay above 90% WAL usage
- WALPressureProvider interface + NVMeAdapter.WALPressure()
BUG-CP103-2: Volume-level WAL admission control
- WALAdmission with counting semaphore (max concurrent writers)
- Soft watermark (0.7): small delay to desynchronize herd
- Hard watermark (0.9): block until flusher drains
- Single-deadline budget shared across watermark wait + semaphore
- Close-aware during both watermark and semaphore waits
- Wired into BlockVol.WriteLBA() and Trim()
Benchmark platform enhancements:
- NVMe benchmark actions and scenarios (A/B, CW sweep, IOQ sweep)
- Database benchmark actions (SQLite, pgbench)
- K8s operator QA reconciler tests
- New testrunner scenarios for HA, fault injection, CSI lifecycle
Test counts: 213 NVMe + 625 engine + operator + testrunner tests, all passing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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2026-03-09 17:44:01 -07:00 |
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Ping QiuandClaude Opus 4.6
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da1b81d1c9
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feat: CP8-3-1 durability modes + testrunner platform + 21 adversarial tests
Durability mode implementation (sync_all, sync_quorum, best_effort):
- DurabilityMode type with superblock persistence, parse/validate/string
- MakeDistributedSync mode-aware barrier enforcement in dist_group_commit
- blockerr sentinel package (ErrDurabilityBarrierFailed, ErrDurabilityQuorumLost)
- gRPC create path: mode validation, idempotent create consistency, partial cleanup
- F1: strict mode rejects partial replica provisioning with cleanup
- F3: empty heartbeat does not overwrite persisted strict mode
- F4: SCSI error mapping uses errors.Is sentinels (not string matching)
- Proto/wire/blockapi/CLI/UI plumbing for durability_mode field
- Observability dashboard: cluster health cards + per-volume columns
Testrunner platform (YAML-driven integration test framework):
- Engine, parser, registry, reporter (JUnit XML + HTML), metrics scraping
- 52 registered actions: block, iSCSI, I/O, fault injection, assertions
- Baseline regression framework with 7 hard-fail conditions
- 15 YAML scenarios (smoke, crash, HA, fault, consistency, snapshot)
- 49 unit tests for testrunner internals
QA adversarial suite (21 tests, all PASS):
- Idempotent create mode/RF mismatch detection
- Heartbeat mode downgrade prevention (F3)
- sync_all/sync_quorum partial replica enforcement (F1)
- Concurrent create race safety
- Failover/expand mode preservation
- Cleanup resilience when delete fails
- Master restart auto-register mode handling
- Superblock roundtrip all 3 modes
- Validate edge cases (mode×RF matrix)
- RequiredReplicas quorum math verification
- Sentinel error categorization
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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2026-03-06 01:06:51 -08:00 |
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