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Per architect single-sign of G5-5 §close (`seaweedfs@c78116fd2`): (a) v3-dev-roadmap.md - §3: G5 line note now mentions G5-5 closed at L3 + G5-5C carry-forward - §4: G5-5 row → CLOSED (link to seaweedfs@c78116fd2); G5-5C row added as next active gate with bound pass criterion - §7: G5-5 close commit appended to recently-closed table (seaweed_block@5c4718f + seaweedfs@c78116fd2, L3 reached, #4 carry) (b) v3-phase-15-g5-5c-mini-plan.md (new) v0.1 kickoff - §1 scope: peer recovery trigger after replica restart; reuse T4d-4 primitives (architect binding); no engine logic change - §1.A: three trigger source options (A master observation, B periodic probe, C transport reconnect) with tradeoffs; sw recommends A; final pick deferred to architect ratification - §2: 6 acceptance criteria, hardware step is exactly G5-5 #4 (verify_restart_catchup → GREEN with no harness changes) - §3: 2 new INVs proposed (REPL-PEER-RECOVERY-TRIGGER-001 + -NO-RETRIGGER-LOOP) + 2 deferred ledger pointers from G5-5 close - §4: G-1 N/A (new build, no V2 PORT) - §5: forward-carries from G5-5 §close all addressed - §6: 5 risks tabled - §7: sign table awaiting architect §1-§6 ratification including trigger source pick Standing by for architect ratification of trigger source binding. No code starts until §1-§6 signed.
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V3 Dev Roadmap (Entry Point)
Date: 2026-04-26 (kept current; update on every gate close) Status: ACTIVE — single navigation point for "where are we, what's next" Purpose: 1-page roadmap for new readers + returning collaborators. Points to canonical docs for detail.
1. The 3 doc layers
| Layer | Doc | Purpose |
|---|---|---|
| Methodology | v3-phase-development-model.md |
How V3 phases work (closed-loop discipline, target/proof/closure). Apr 2026 draft, methodology-stable. |
| Roadmap (this doc) | v3-dev-roadmap.md |
What's done, what's next. Entry point. |
| Canonical scope | v3-phase-15-mvp-scope-gates.md |
THE 22 gates of P15 + dependency graph + closure rules + P0/P1/P2 priority |
If you only read one doc beyond this one, read v3-phase-15-mvp-scope-gates.md.
2. Current state
| Phase | State |
|---|---|
| P14 | ✅ CLOSED (authority + topology layer) |
| P15 | 🟡 IN PROGRESS — closing gate G5 of 22 |
| P16 | ⏳ Not designed yet — only hinted as "in-place V2→V3 migration" |
P15 = the MVP. 22 gates G0–G22. Currently at gate 5/22. Long way to G22 final cluster validation.
3. P15 gates — visual progress
G0 Product hosting ✅ closed (T0 implementation)
G1 Master-volume RPC ✅ closed (T0/T1 implementation)
G2 Frontend smoke ✅ closed (T1/T2)
G3 Real frontends iSCSI+NVMe ✅ closed (T2)
G4 Local durable data path ✅ closed (T3)
G5 Replicated write path 🟡 closing (T4 done; G5-1..6 close work; G5-5 just closed at L3, G5-5C carry-forward)
G6 Incremental WAL catch-up ⏳ next (T4c muscle done, mostly verification)
G7 Rebuild / replica re-creation ⏳ (T4d-4 part B/C scaffolding done)
G8 Failover data continuity ⏳
G9 Volume lifecycle ⏳
G9A Placement Controller MVP ⏳ NEW (added 2026-04-26 per architect; flat-topology only, no rebalance)
G10 Snapshot ⏳
G11 Resize ⏳
G12 Disk failure handling ⏳
G13 Node lifecycle ⏳
G14 External API ⏳
G15 CSI lifecycle ⏳
G16 Security / Auth ⏳
G17 Diagnostics / Metrics / Logs ⏳
G18 Configuration / Deployment ⏳
G19 Migration / Coexistence ⏳ (V2→V3 in-place is P16+)
G20 QoS / rack / operator / GC ⏳ (P2 — defer-allowed)
G21 Performance SLO ⏳
G22 Final cluster validation ⏳ (release gate; P15 closes here)
4. Where we actually are right now (granular)
| Item | State |
|---|---|
| T4d (replicated write path implementation) | ✅ CLOSED at seaweedfs@2ee12b2c1 (closure report) |
| G5 collective close (production-readiness) | 🟡 IN PROGRESS — 6 sub-batches: |
| ↳ G5-1 multi-replica QA scenarios | 🟡 2 landed; rest on hold |
| ↳ G5-2 walstore cadence smoke | ⏳ sw cleared, not started |
| ↳ G5-3 metrics/backpressure | ⏳ sw cleared, not started |
| ↳ G5-4 binary T4 wiring | ✅ CLOSED at seaweedfs@daafc8e25 (mini-plan v0.5) |
| ↳ G5-5 m01 hardware first-light | ✅ CLOSED at seaweedfs@c78116fd2 — Product level L3 Replicated IO reached on m01/M02 hardware (#1/#2/#3 GREEN; #4 carried to G5-5C) |
| ↳ G5-5C peer recovery trigger after replica restart | ▶️ next — pass criterion bound: G5-5 #4 hardware case (kill replica + write while down + restart same --durable-root + byte-equal converges within deadline) |
| ↳ G5-6 G5-DECISION-001 + closure report | ⏳ at G5 collective close |
5. Naming convention (decoder)
| Term | Meaning |
|---|---|
| P | Phase. P14, P15, P16. P15 = current MVP. |
| G | Gate. 22 gates within P15. Product-level milestones. |
| T | Implementation track. T0–T4 historical (each closed one or more gates). T5+ may appear for gates that need substantial new code. |
| G_x_-N | Sub-batch within a gate-close (e.g., G5-1..G5-6). Used when most implementation is done; close work is verification + missing pieces. |
T-tracks vs G-N batches: contextual choice per gate. T-tracks for substantial new implementation; G-N for gate-close verification when implementation is mostly done. Architect picks at each kickoff.
6. Source of truth pointers
For any specific question, go to the canonical doc:
| Question | Doc |
|---|---|
| What does P15 promise? | v3-phase-15-mvp-scope-gates.md (22 gates + closure rules) |
| What's the product goal + execution model? | v3-phase-15-product-plan.md |
| Why pre-declared topology + authority discipline (not V2-style heartbeat-as-authority)? | v3-product-placement-authority-rationale.md |
| What positive behavior contracts must V3 block preserve (vs object/KV)? | v3-block-behavior-contract-index.md — first-order architect ref, positive counterpart to anti-patterns |
| What's the methodology / closed-loop discipline? | v3-phase-development-model.md |
| What invariants does V3 promise + which tests prove them? | v3-invariant-ledger.md |
| What's the V2→V3 contract bridge state? | v2-v3-contract-bridge-catalogue.md |
| What's the QA system (G-1, G-2, G-3 gates, kickoff/mini-plan/G-1 cadence)? | v3-phase-15-qa-system.md + v3-quality-system.md |
7. Recently closed batches (for context window)
| Batch | Closed | Commit | Highlights |
|---|---|---|---|
| BlockStore walHead hotfix | 2026-04-25 | seaweed_block@f6084ee |
substrate-internal one-liner; closes round-43 storage-contract violation |
| T4d-1 typed RecoveryFailureKind | 2026-04-25 | 1edeb36 + d6b1890 |
2-enum split; engine zero-imports storage |
| T4d-2 lane-pure apply gate | 2026-04-25 | bd2de99 + 01f4ab9 + a63ae9b |
round-43/44 architectural locks; per-LBA stale-skip |
| T4d-3 R+1 + boundary fences | 2026-04-25 | 44c60dd |
engine emit R+1; CARRY-T4D-LANE-CONTEXT-001 Option B |
| T4d-4 part A RecoveryMode + Stop | 2026-04-25 | f88d097 |
substrate method; BUG-005 non-repeat |
| T4d-4 part B engine wiring + round-47 | 2026-04-25 | 812d3fa |
WithEngineDrivenRecovery REAL; rebuild engine-driven |
| T4d-4 part C full L2 + 2 bug fixes | 2026-04-25 | e642ae8 |
2 engine bugs surfaced + fixed during HARD GATE #3 |
| T4d closure report | 2026-04-25 | seaweedfs@2ee12b2c1 |
T4 batch series CLOSED |
| T2A NVMe race fix | 2026-04-25 | seaweed_block@a0be6d5 |
atomic.Pointer test fixture; -race ×50 PASS |
| G5-4 binary T4 wiring | 2026-04-26 | seaweed_block@c820e17 + ledger seaweedfs@36ba7b44e + close-lock daafc8e25 |
binary now wires T4 stack; criteria 3+4 relocated to G5-5 |
| G5-5 m01 hardware first-light | 2026-04-27 | seaweed_block@5c4718f + close-doc seaweedfs@c78116fd2 |
L3 Replicated IO on m01/M02 hardware: #1 cluster role split GREEN, #2 live iSCSI replicated write byte-equal GREEN, #3 network partition + heal catch-up GREEN (8s); #4 replica-restart catch-up carried to G5-5C as real recovery-path finding |
8. After G5 closes
Per v3-phase-15-mvp-scope-gates.md §4.5 dependency graph:
- G6 Incremental Catch-Up (T4c muscle done; mostly verification)
- G7 Rebuild (T4d-4 part B/C scaffolding done)
- G8 Failover continuity (substantial new work likely)
- G9 Volume lifecycle (new code)
- G9A Placement Controller MVP (new addition 2026-04-26 — flat-topology only, sits between G9 and G10)
- G10–G22 (mix of new code + verification + integration)
P15 closes at G22 final cluster validation. After P15 → P16 (in-place migration is the only hinted scope).
9. Doc hygiene — outdated/historical docs
The sw-block/design/ directory has accumulated 60+ v3-phase-15-* docs. Most are historical artifacts from closed T-tracks. To find current work:
- Active: any doc dated 2026-04-25 or later, OR referenced from this roadmap
- Historical: T0/T1/T2/T3 assignments + sketches + closure reports — kept for reference, not part of active work
For a full doc archive plan see §10 of this roadmap (when committed); meanwhile, use this roadmap's pointers + commit dates to navigate.
10. Update protocol
This doc gets updated at every gate-close:
- Move closed gate from "🟡 closing" → "✅ closed" in §3
- Move next gate to "🟡 closing" or "▶️ next"
- Update §4 "where we actually are" with the new active batch
- Append the gate-close commit to §7 recent-closed table
- Re-check §8 "after G_x_ closes" prediction against actual scope
QA owns this doc; sw + architect review at each gate-close report sign.