---
phase: 08-retroactive-phase-verification
verified: 2026-03-24T00:00:00Z
status: passed
score: 12/12 must-haves verified (6 Phase 02 truths + 6 Phase 03 truths)
gaps: []
human_verification:
  - test: "SC-2 cluster_start SSH wait blocking behaviour (Phase 02)"
    expected: "With wait_for_ssh=True, cluster_start blocks until all nodes SSH-reachable and returns time waited"
    why_human: "Requires live VMs with real SSH endpoints; unit tests mock asyncssh.connect"
  - test: "SC-3 cluster_status live SSH reachability (Phase 02)"
    expected: "cluster_status returns ssh_reachable=True for running nodes and False for stopped nodes"
    why_human: "Requires live VMs; unit tests mock the SSH check"
  - test: "SC-3 transparent reconnect after VM reboot (Phase 03)"
    expected: "After snapshot_revert or node_crash, the next node_exec call succeeds without manual reconnect"
    why_human: "Requires live VM reboot; unit tests mock asyncssh connection lifecycle"
---

# Phase 8: Retroactive Phase Verification (02 & 03) — Verification Report

**Phase Goal:** Close the audit gap for Phase 02 (Core VM Lifecycle) and Phase 03 (SSH Execution) by creating the missing verification reports, providing the 3-source evidence required to mark CLUS-01..07 and EXEC-01..03 as satisfied at milestone level.
**Verified:** 2026-03-24
**Status:** passed
**Re-verification:** No — initial verification

---

## Goal Achievement

This phase produces two output artifacts — `02-VERIFICATION.md` and `03-VERIFICATION.md` — rather than code. The observable truths describe what those documents must contain and the codebase evidence they must cite.

### Observable Truths

Plan 08-01 must-haves (02-VERIFICATION.md):

| #  | Truth | Status | Evidence |
|----|-------|--------|----------|
| 1  | `02-VERIFICATION.md` exists in `.planning/phases/02-core-vm-lifecycle/` | ✓ VERIFIED | File confirmed at `.planning/phases/02-core-vm-lifecycle/02-VERIFICATION.md` |
| 2  | YAML frontmatter includes `phase`, `verified`, `status`, `score`, and `gaps` fields | ✓ VERIFIED | Frontmatter contains all 5 fields; `phase: 02-core-vm-lifecycle`, `status: passed`, `score: 5/5 roadmap success criteria verified; all must_have truths resolved`, `gaps: []` |
| 3  | All 5 roadmap success criteria for Phase 2 have a row with status VERIFIED or human_needed | ✓ VERIFIED | SC-1 through SC-5 all have `✓ VERIFIED`; 48 VERIFIED instances total in file |
| 4  | Each SC row cites an implementation file (with line reference), a test file, and a test name | ✓ VERIFIED | Each row cites `cluster/__init__.py:NNN` + test file + specific test function names |
| 5  | Requirements coverage table maps CLUS-01 through CLUS-07 to plans and test counts | ✓ VERIFIED | Requirements table has 7 rows; CLUS-01..07 all marked `✓ SATISFIED`; grep count=8 |
| 6  | Per-plan must-have truth tables are present (one section per plan 02-01 through 02-04) | ✓ VERIFIED | Four sections: Plan 02-01, Plan 02-02, Plan 02-03, Plan 02-04 all present |

Plan 08-02 must-haves (03-VERIFICATION.md):

| #  | Truth | Status | Evidence |
|----|-------|--------|----------|
| 7  | `03-VERIFICATION.md` exists in `.planning/phases/03-ssh-execution/` | ✓ VERIFIED | File confirmed at `.planning/phases/03-ssh-execution/03-VERIFICATION.md` |
| 8  | YAML frontmatter includes `phase`, `verified`, `status`, `score`, and `gaps` fields | ✓ VERIFIED | Frontmatter contains all 5 fields; `phase: 03-ssh-execution`, `status: passed`, `score: 3/3 roadmap success criteria verified; all must_have truths resolved`, `gaps: []` |
| 9  | All 3 roadmap success criteria for Phase 3 have a row with status VERIFIED or human_needed | ✓ VERIFIED | SC-1, SC-2, SC-3 all have `✓ VERIFIED`; 24 VERIFIED instances total in file |
| 10 | Each SC row cites an implementation file (with line reference), a test file, and a test name | ✓ VERIFIED | Each row cites `exec/__init__.py:NNN` or `exec/ssh.py:NNN` + test file + test function names |
| 11 | Requirements coverage table maps EXEC-01 through EXEC-03 to plans and test counts | ✓ VERIFIED | Requirements table has 3 rows; EXEC-01..03 all marked `✓ SATISFIED`; grep count=4 |
| 12 | Per-plan must-have truth tables are present (one section per plan 03-01 through 03-03) | ✓ VERIFIED | Three sections: Plan 03-01, Plan 03-02, Plan 03-03 all present |

**Score:** 12/12 truths verified

---

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `.planning/phases/02-core-vm-lifecycle/02-VERIFICATION.md` | Phase 2 verification report with 3-source evidence | ✓ VERIFIED | 190 lines; substantive content covering all 5 SCs, 4 per-plan truth tables, requirements coverage for CLUS-01..07 |
| `.planning/phases/03-ssh-execution/03-VERIFICATION.md` | Phase 3 verification report with 3-source evidence | ✓ VERIFIED | 150 lines; substantive content covering all 3 SCs, 3 per-plan truth tables, requirements coverage for EXEC-01..03 |

---

### Key Link Verification

#### 02-VERIFICATION.md → vmcluster_mcp/cluster/__init__.py

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| 02-VERIFICATION.md SC table | `cluster/__init__.py:59` | idempotency guard citation | ✓ WIRED | `existing_dom = await _client.lookup_domain(first_dom_name)` confirmed at line 59 |
| 02-VERIFICATION.md SC table | `cluster/__init__.py:234` | cluster_start citation | ✓ WIRED | `async def cluster_start` confirmed at line 234 (decorator at 232) |
| 02-VERIFICATION.md SC table | `cluster/__init__.py:338` | cluster_stop citation | ✓ WIRED | `async def cluster_stop` confirmed at line 338 |
| 02-VERIFICATION.md SC table | `cluster/__init__.py:400` | cluster_destroy citation | ✓ WIRED | `async def cluster_destroy` confirmed at line 400 |
| 02-VERIFICATION.md SC table | `cluster/__init__.py:471` | cluster_status citation | ✓ WIRED | `async def cluster_status` confirmed at line 471 |
| 02-VERIFICATION.md SC table | `cluster/__init__.py:544` | cluster_handle citation | ✓ WIRED | `async def cluster_handle` confirmed at line 544 |
| 02-VERIFICATION.md requirements table | CLUS-01..07 | requirements coverage section | ✓ WIRED | All 7 IDs present; grep pattern `CLUS-0[1-7]` returns 8 matches |

#### 03-VERIFICATION.md → vmcluster_mcp/exec/

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| 03-VERIFICATION.md SC table | `exec/ssh.py:89` | reconnect path citation | ✓ WIRED | `except (asyncssh.ConnectionLost, asyncssh.DisconnectError, OSError)` confirmed at line 89 |
| 03-VERIFICATION.md SC table | `exec/__init__.py:23` | node_exec tool citation | ✓ WIRED | `@mcp.tool()` at line 23, `async def node_exec` at line 25 |
| 03-VERIFICATION.md SC table | `exec/__init__.py:69` | node_exec_all citation | ✓ WIRED | `@mcp.tool()` at line 69, `async def node_exec_all` at line 71 |
| 03-VERIFICATION.md SC table | `exec/__init__.py:124` | asyncio.gather citation | ✓ WIRED | `exec_results: list[ExecResult] = await asyncio.gather(*tasks)` confirmed at line 124 |
| 03-VERIFICATION.md requirements table | EXEC-01..03 | requirements coverage section | ✓ WIRED | All 3 IDs present; grep pattern `EXEC-0[1-3]` returns 4 matches |

---

### Data-Flow Trace

Not applicable — this phase produces planning documents, not code with data flows.

---

### Behavioral Spot-Checks

Tests for the underlying Phase 02 and Phase 03 code were run as part of verifying evidence citations:

| Behavior | Command | Result | Status |
|----------|---------|--------|--------|
| 83 Phase 02 tests pass | `.venv/bin/python -m pytest tests/test_libvirt_client.py tests/test_builders.py tests/test_cloud_init.py tests/test_cluster_define.py tests/test_cluster_lifecycle.py tests/test_cluster_status.py -q` | 106 passed (all cluster + exec tests together) in 1.13s | ✓ PASS |
| 23 Phase 03 tests pass | `.venv/bin/python -m pytest tests/test_ssh_client.py tests/test_node_exec.py tests/test_node_exec_all.py -q` | included in 106 above | ✓ PASS |
| Ruff clean on cluster/ | `.venv/bin/python -m ruff check vmcluster_mcp/cluster/` | All checks passed (per 02-VERIFICATION.md run output) | ✓ PASS |
| Ruff clean on exec/ | `.venv/bin/python -m ruff check vmcluster_mcp/exec/` | All checks passed (per 03-VERIFICATION.md run output) | ✓ PASS |

---

### Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|------------|-------------|--------|----------|
| CLUS-01 | 08-01 / Phase 02-02 | Agent can define a cluster from a topology file | ✓ SATISFIED | 02-VERIFICATION.md requirements table; `cluster_define` + 4 tests |
| CLUS-02 | 08-01 / Phase 02-03 | Agent can start all nodes and optionally wait for SSH | ✓ SATISFIED | 02-VERIFICATION.md requirements table; `cluster_start` + 5 tests |
| CLUS-03 | 08-01 / Phase 02-03 | Agent can stop all nodes (graceful or forcibly) | ✓ SATISFIED | 02-VERIFICATION.md requirements table; `cluster_stop` + 3 tests |
| CLUS-04 | 08-01 / Phase 02-03 | Agent can destroy cluster and optionally remove overlays | ✓ SATISFIED | 02-VERIFICATION.md requirements table; `cluster_destroy` + 5 tests |
| CLUS-05 | 08-01 / Phase 02-04 | Agent can query current status of all nodes | ✓ SATISFIED | 02-VERIFICATION.md requirements table; `cluster_status` + 7 tests |
| CLUS-06 | 08-01 / Phase 02-04 | Agent can obtain a ClusterHandle for downstream SSH consumers | ✓ SATISFIED | 02-VERIFICATION.md requirements table; `cluster_handle` + 6 tests |
| CLUS-07 | 08-01 / Phase 02-02 | cluster_define is idempotent | ✓ SATISFIED | 02-VERIFICATION.md requirements table; `lookup_domain` guard at `__init__.py:59` |
| EXEC-01 | 08-02 / Phase 03-02 | Agent can run a shell command on a single node with structured output | ✓ SATISFIED | 03-VERIFICATION.md requirements table; `node_exec` + 6 tests |
| EXEC-02 | 08-02 / Phase 03-03 | Agent can run the same command across all or subset of nodes in parallel | ✓ SATISFIED | 03-VERIFICATION.md requirements table; `node_exec_all` + asyncio.gather + 8 tests |
| EXEC-03 | 08-02 / Phase 03-01 | SSH connections re-established automatically after node reboot | ✓ SATISFIED | 03-VERIFICATION.md requirements table; SSHConnectionManager reconnect path at `ssh.py:89` + 9 tests |

REQUIREMENTS.md traceability table updated: all 10 IDs show `Complete` under "Phase 2 / Phase 8" and "Phase 3 / Phase 8" entries respectively. All 10 have `[x]` checkboxes in REQUIREMENTS.md.

---

### Anti-Patterns Found

| File | Line | Pattern | Severity | Impact |
|------|------|---------|----------|--------|
| None found | — | — | — | — |

Both verification reports are substantive planning documents with no TODO/FIXME/placeholder patterns. The documents cite concrete line numbers confirmed against the live codebase. Minor line-number deviations from the plan's `<interfaces>` section (plan cited 232/336/398/469/542; actual is 234/338/400/471/544 — 2-line offset throughout) are documented in 08-01-SUMMARY.md and the verification reports use the correct actual line numbers.

---

### Human Verification Required

#### 1. cluster_start SSH wait blocking behaviour (Phase 02, SC-2)

**Test:** Deploy a live cluster; call `cluster_start(cluster_name, wait_for_ssh=True)`.
**Expected:** `cluster_start` blocks until all nodes SSH-reachable and returns time waited per node in result.
**Why human:** Requires live VMs with real SSH endpoints; unit tests mock `asyncssh.connect` to return immediately.

#### 2. cluster_status live SSH reachability (Phase 02, SC-3)

**Test:** Deploy a live cluster with some nodes running and some stopped; call `cluster_status(cluster_name)`.
**Expected:** Running nodes show `ssh_reachable=True`; stopped nodes show `ssh_reachable=False`.
**Why human:** Requires live VMs; unit tests mock the SSH check function.

#### 3. Transparent reconnect after live VM reboot (Phase 03, SC-3)

**Test:** Deploy a cluster; call `node_crash` on a node; then immediately call `node_exec(cluster_name, node_name, "hostname")`.
**Expected:** `node_exec` succeeds without error — `SSHConnectionManager` detects the stale connection, invalidates the cache, and retries once with a fresh connection.
**Why human:** Requires live VM reboot; unit tests mock asyncssh connection lifecycle using `AsyncMock(side_effect=asyncssh.ConnectionLost(...))` and cannot validate real VM/network behavior.

---

### Gaps Summary

No gaps. Both verification reports exist, are substantive (not stubs), and cite confirmed codebase evidence. All 10 requirement IDs (CLUS-01..07, EXEC-01..03) are accounted for in both REQUIREMENTS.md and the new verification files. The three human-verification items are non-blocking annotations for live-VM testing, not gaps in the audit record.

---

_Verified: 2026-03-24_
_Verifier: Claude Sonnet 4.6 (gsd-verifier)_
