Files
seaweedfs/sw-block/design
pingqiuandClaude Opus 4.6 b82df09856 feat: Phase 18 M1 — transport-backed RF2 failover runtime
M1 milestone: failover evidence crosses transport/session seam.

Adapter seam (failover_adapter.go):
- FailoverEvidenceAdapter: query-side (promotion evidence + replica summary)
- FailoverTakeoverAdapter: execution-side (prepare + gate)
- FailoverTarget: binds NodeID + both adapters
- NewInProcessFailoverTarget: factory for in-process case

Transport seam (failover_evidence_transport.go):
- FailoverEvidenceTransport: request/response interface with nodeID routing
- FailoverEvidenceHandler: server-side registration
- InMemoryFailoverEvidenceTransport: first transport impl (in-memory)
- NewHybridInProcessFailoverTarget: transport-backed evidence + local takeover

Runtime manager (runtime_manager.go):
- InProcessRuntimeManager: participant registry + ExecuteFailover entry point
- Persisted failover snapshots/results per-volume and global-last

All failover paths (session/driver/manager) now go through adapter seam.
Old FailoverParticipant preserved as compatibility wrapper only.

Phase 18 docs: phase-18.md (M1-M5 structure), log, decisions.
Design docs updated: kernel-closure-review, claim-and-evidence ledger.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-05 13:57:08 -07:00
..

V2 Design

This directory now keeps the current design and process entrypoints for the active V2 line.

Historical planning/review documents were moved to ../docs/archive/design/ to keep this directory smaller and easier to navigate.

Read First

  • v2-protocol-truths.md
  • v2-capability-map.md
  • v2-pure-runtime-rf1-bootstrap.md
  • v2-volumev2-single-node-mvp.md
  • v2-proof-and-retest-pyramid.md
  • v2-protocol-claim-and-evidence.md
  • v2-two-loop-protocol.md
  • v2-automata-ownership-map.md
  • v2-loop1-surface-draft.md
  • v2-product-completion-overview.md
  • v2-phase-development-plan.md
  • v2-semantic-methodology.zh.md
  • v2-protocol-closure-map.zh.md
  • v2-algorithm-overview.md
  • v2-algorithm-overview.zh.md
  • v2-detailed-algorithm.zh.md

Active Process / Workflow

  • protocol-development-process.md
  • agent_dev_process.md

Active Supporting Design

  • v2-acceptance-criteria.md
  • v2-open-questions.md
  • v2_scenarios.md
  • v2-scenario-sources-from-v1.md
  • v1-v15-v2-comparison.md
  • v2-reuse-replacement-boundary.md
  • wal-replication-v2.md
  • wal-replication-v2-state-machine.md
  • wal-replication-v2-orchestrator.md
  • wal-v2-tiny-prototype.md
  • wal-v1-to-v2-mapping.md
  • v2-dist-fsm.md

Historical / Archived

See ../docs/archive/design/README.md for archived:

  • old roadmaps
  • first-slice planning docs
  • passed readiness/slicing reviews
  • phase-specific design maps for closed phases

Execution Note

  • active development tracking lives under ../.private/phase/
  • current phase contract and slice packages live there rather than in this directory

The original project-level copies under learn/projects/sw-block/design/ remain as shared references for now.