---
phase: 10-nyquist-validation-coverage
verified: 2026-03-24T00:00:00Z
status: passed
score: 7/7 must-haves verified
re_verification: null
gaps: []
human_verification: []
---

# Phase 10: Nyquist Validation Coverage Verification Report

**Phase Goal:** Create VALIDATION.md artifacts for all 7 existing phases to achieve full Nyquist compliance, providing structured test-evidence mapping for every phase requirement.
**Verified:** 2026-03-24
**Status:** passed
**Re-verification:** No — initial verification

---

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | 01-VALIDATION.md exists and maps all 4 FOUND requirements to specific passing test names | VERIFIED | File exists (83 lines), FOUND-01..04 each appear 2+ times, test names verified against test_server.py, test_config.py, test_topology.py |
| 2 | 02-VALIDATION.md exists and maps all 7 CLUS requirements to specific passing test names | VERIFIED | File exists (89 lines), CLUS-01..07 each appear 2+ times, test names verified against test_cluster_define.py, test_cluster_lifecycle.py, test_cluster_status.py |
| 3 | 03-VALIDATION.md exists and maps all 3 EXEC requirements to specific passing test names | VERIFIED | File exists (81 lines), EXEC-01..03 each appear 2+ times, test names verified against test_ssh_client.py, test_node_exec.py, test_node_exec_all.py |
| 4 | 04-VALIDATION.md exists and maps SNAP-01..04 to passing test names and assertion evidence | VERIFIED | File exists (82 lines), SNAP-01..04 each appear 2+ times, test names verified against test_snapshot_create.py, test_snapshot_revert.py, test_snapshot_list.py, test_snapshot_delete.py |
| 5 | 05-VALIDATION.md exists and maps ART-01..05 to passing test names and assertion evidence | VERIFIED | File exists (84 lines), ART-01..05 each appear 2+ times, test names verified against test_artifact_registry.py, test_artifact_sync.py, test_artifact_install.py |
| 6 | 06-VALIDATION.md exists and maps OBS-01..03 to passing test names and assertion evidence | VERIFIED | File exists (81 lines), OBS-01..03 each appear 2+ times, test names verified against test_dmesg_mark.py, test_dmesg_collect.py, test_classifier.py |
| 7 | 07-VALIDATION.md exists and maps FAULT-01..07 to passing test names and assertion evidence | VERIFIED | File exists (89 lines), FAULT-01..07 each appear 2+ times, test names verified against test_fault_registry.py, test_net_partition.py, test_net_impair.py, test_net_heal.py, test_net_fault_list.py, test_node_crash.py |

**Score:** 7/7 truths verified

---

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `.planning/phases/01-foundation/01-VALIDATION.md` | Test-evidence mapping for FOUND-01..04 with nyquist_compliant: true | VERIFIED | 83 lines, substantive, all 4 requirements mapped, commit 8e6e521 |
| `.planning/phases/02-core-vm-lifecycle/02-VALIDATION.md` | Test-evidence mapping for CLUS-01..07 with nyquist_compliant: true | VERIFIED | 89 lines, substantive, all 7 requirements mapped, commit 1d18c46 |
| `.planning/phases/03-ssh-execution/03-VALIDATION.md` | Test-evidence mapping for EXEC-01..03 with nyquist_compliant: true | VERIFIED | 81 lines, substantive, all 3 requirements mapped, commit c335308 |
| `.planning/phases/04-snapshot-management/04-VALIDATION.md` | Test-evidence mapping for SNAP-01..04 with nyquist_compliant: true | VERIFIED | 82 lines, substantive, all 4 requirements mapped, commit c30a61c |
| `.planning/phases/05-artifact-pipeline/05-VALIDATION.md` | Test-evidence mapping for ART-01..05 with nyquist_compliant: true | VERIFIED | 84 lines, substantive, all 5 requirements mapped, commit eca7f32 |
| `.planning/phases/06-kernel-observability/06-VALIDATION.md` | Test-evidence mapping for OBS-01..03 with nyquist_compliant: true | VERIFIED | 81 lines, substantive, all 3 requirements mapped, commit 86749f1 |
| `.planning/phases/07-network-node-fault-injection/07-VALIDATION.md` | Test-evidence mapping for FAULT-01..07 with nyquist_compliant: true | VERIFIED | 89 lines, substantive, all 7 requirements mapped, commit 2f003dd |

---

### Key Link Verification

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| 02-VALIDATION.md Per-Task Verification Map | tests/test_cluster_define.py, test_cluster_lifecycle.py, test_cluster_status.py | CLUS-01..07 requirement-to-test-name rows | WIRED | All 7 CLUS requirements present; test_cluster_define_idempotent, test_cluster_destroy_remove_overlays_true, test_cluster_handle_node_descriptors verified in actual files |
| 03-VALIDATION.md Per-Task Verification Map | tests/test_ssh_client.py, test_node_exec.py, test_node_exec_all.py | EXEC-01..03 requirement-to-test-name rows | WIRED | All 3 EXEC requirements present; test_execute_reconnects_on_stale_connection, test_node_exec_all_uses_asyncio_gather verified in actual files |
| 04-VALIDATION.md Per-Task Verification Map | tests/test_snapshot_create.py, test_snapshot_list.py, test_snapshot_revert.py, test_snapshot_delete.py | SNAP-01..04 requirement-to-test-name rows | WIRED | All 4 SNAP requirements present; critical test names confirmed in actual files |
| 05-VALIDATION.md Per-Task Verification Map | tests/test_artifact_registry.py, test_artifact_sync.py, test_artifact_install.py | ART-01..05 requirement-to-test-name rows | WIRED | All 5 ART requirements present; test_save_atomic_write, test_sync_node_skips_when_dir_exists_no_force, test_modprobe_path_creates_correct_ssh_command confirmed in actual files |
| 06-VALIDATION.md Per-Task Verification Map | tests/test_dmesg_mark.py, tests/test_dmesg_collect.py, tests/test_classifier.py | OBS-01..03 requirement-to-test-name rows | WIRED | All 3 OBS requirements present; test_dmesg_mark_unique_marker_per_call, test_collect_marker_filters_before_marker, test_classify_kasan confirmed in actual files |
| 07-VALIDATION.md Per-Task Verification Map | tests/test_fault_registry.py, test_net_partition.py, test_net_impair.py, test_net_heal.py, test_net_fault_list.py, test_node_crash.py | FAULT-01..07 requirement-to-test-name rows | WIRED | All 7 FAULT requirements present; all key acceptance-criteria test names confirmed in actual files |

---

### Data-Flow Trace (Level 4)

Not applicable — VALIDATION.md files are static documentation artifacts, not components that render dynamic data from a data source.

---

### Behavioral Spot-Checks

| Behavior | Command | Result | Status |
|----------|---------|--------|--------|
| All 364 tests in the test suite pass (confirming referenced test evidence is live) | `.venv/bin/pytest tests/ -q --tb=no` | 364 passed in 2.17s | PASS |
| 01-VALIDATION.md has nyquist_compliant: true in YAML frontmatter | `grep "nyquist_compliant: true" .planning/phases/01-foundation/01-VALIDATION.md` | 1 match | PASS |
| 07-VALIDATION.md has nyquist_compliant: true in YAML frontmatter | `grep "nyquist_compliant: true" .planning/phases/07-network-node-fault-injection/07-VALIDATION.md` | 1 match | PASS |
| All 7 commits in git history | `git log --oneline 8e6e521 1d18c46 c335308 c30a61c eca7f32 86749f1 2f003dd` | 7 commits found | PASS |

---

### Requirements Coverage

All 33 v1.0 requirements are accounted for across plans 10-01, 10-02, and 10-03.

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|-------------|-------------|--------|----------|
| FOUND-01 | 10-01 | Server starts and accepts MCP stdio | SATISFIED | 01-VALIDATION.md, 2 occurrences, test_catches_value_error in test_server.py |
| FOUND-02 | 10-01 | All tool results as ToolResult[T] | SATISFIED | 01-VALIDATION.md, 3 occurrences, test_success_with_string in test_models.py |
| FOUND-03 | 10-01 | Config loadable from YAML/env vars | SATISFIED | 01-VALIDATION.md, 2 occurrences, test_loads_from_yaml_file in test_config.py |
| FOUND-04 | 10-01 | Topology YAML parsed and validated | SATISFIED | 01-VALIDATION.md, 2 occurrences, test_full_topology_validates in test_topology.py |
| CLUS-01 | 10-01 | Define cluster from topology | SATISFIED | 02-VALIDATION.md, 3 occurrences, 7 test names in test_cluster_define.py and test_builders.py |
| CLUS-02 | 10-01 | Start all nodes, wait for SSH | SATISFIED | 02-VALIDATION.md, 2 occurrences, test_cluster_start_boots_all_domains in test_cluster_lifecycle.py |
| CLUS-03 | 10-01 | Stop nodes gracefully/forcibly | SATISFIED | 02-VALIDATION.md, 2 occurrences, test_cluster_stop_shutdown_mode in test_cluster_lifecycle.py |
| CLUS-04 | 10-01 | Destroy cluster, remove overlays | SATISFIED | 02-VALIDATION.md, 2 occurrences, test_cluster_destroy_remove_overlays_true confirmed in test_cluster_lifecycle.py |
| CLUS-05 | 10-01 | Query node status | SATISFIED | 02-VALIDATION.md, 2 occurrences, test_cluster_status_returns_cluster_name in test_cluster_status.py |
| CLUS-06 | 10-01 | Obtain ClusterHandle descriptor | SATISFIED | 02-VALIDATION.md, 2 occurrences, test_cluster_handle_node_descriptors confirmed in test_cluster_status.py |
| CLUS-07 | 10-01 | cluster_define is idempotent | SATISFIED | 02-VALIDATION.md, 2 occurrences, test_cluster_define_idempotent confirmed in test_cluster_define.py |
| EXEC-01 | 10-01 | Run command on single node | SATISFIED | 03-VALIDATION.md, 3 occurrences, test_node_exec_valid_node_returns_success in test_node_exec.py |
| EXEC-02 | 10-01 | Run command across all/subset nodes | SATISFIED | 03-VALIDATION.md, 2 occurrences, test_node_exec_all_uses_asyncio_gather confirmed in test_node_exec_all.py |
| EXEC-03 | 10-01 | SSH auto-reconnect after reboot | SATISFIED | 03-VALIDATION.md, 2 occurrences, test_execute_reconnects_on_stale_connection confirmed in test_ssh_client.py |
| SNAP-01 | 10-02 | Create named disk snapshot | SATISFIED | 04-VALIDATION.md, 2 occurrences, 7 test names across test_snapshot_create.py and test_snapshot_list.py |
| SNAP-02 | 10-02 | Revert nodes to snapshot atomically | SATISFIED | 04-VALIDATION.md, 2 occurrences, test_revert_destroys_all_nodes_before_any_revert confirmed in test_snapshot_revert.py |
| SNAP-03 | 10-02 | List snapshots with creation time and size | SATISFIED | 04-VALIDATION.md, 2 occurrences, test_snapshot_list_reports_per_node_disk_sizes confirmed in test_snapshot_list.py |
| SNAP-04 | 10-02 | Delete named snapshot from all nodes | SATISFIED | 04-VALIDATION.md, 2 occurrences, test_delete_continues_on_individual_node_failure confirmed in test_snapshot_delete.py |
| ART-01 | 10-02 | Register artifact as content-addressed | SATISFIED | 05-VALIDATION.md, 2 occurrences, test_save_atomic_write confirmed in test_artifact_registry.py |
| ART-02 | 10-02 | Sync artifact to nodes via rsync | SATISFIED | 05-VALIDATION.md, 2 occurrences, test_sync_node_skips_when_dir_exists_no_force confirmed in test_artifact_sync.py |
| ART-03 | 10-02 | Install artifact with modprobe/make/rpm/deb | SATISFIED | 05-VALIDATION.md, 2 occurrences, test_modprobe_path_creates_correct_ssh_command confirmed in test_artifact_install.py |
| ART-04 | 10-02 | List all registered artifacts | SATISFIED | 05-VALIDATION.md, 2 occurrences, test_list_artifacts_returns_all in test_artifact_registry.py |
| ART-05 | 10-02 | Diff two artifacts | SATISFIED | 05-VALIDATION.md, 2 occurrences, test_diff_returns_artifact_diff confirmed in test_artifact_registry.py |
| OBS-01 | 10-03 | Insert dmesg marker on nodes | SATISFIED | 06-VALIDATION.md, 2 occurrences, test_dmesg_mark_unique_marker_per_call confirmed in test_dmesg_mark.py |
| OBS-02 | 10-03 | Collect structured dmesg since marker | SATISFIED | 06-VALIDATION.md, 2 occurrences, test_collect_marker_filters_before_marker confirmed in test_dmesg_collect.py |
| OBS-03 | 10-03 | Classify dmesg for oops/panics/KASAN/UBSAN | SATISFIED | 06-VALIDATION.md, 3 occurrences, test_classify_kasan confirmed in test_classifier.py |
| FAULT-01 | 10-03 | Partition cluster via iptables DROP rules | SATISFIED | 07-VALIDATION.md, 2 occurrences, test_build_partition_rules_comment_tag_format confirmed in test_net_partition.py |
| FAULT-02 | 10-03 | Apply tc netem impairment | SATISFIED | 07-VALIDATION.md, 2 occurrences, 9 test names in test_net_impair.py |
| FAULT-03 | 10-03 | Heal specific network fault by handle ID | SATISFIED | 07-VALIDATION.md, 2 occurrences, 7 test names in test_net_heal.py |
| FAULT-04 | 10-03 | Heal all active faults in one call | SATISFIED | 07-VALIDATION.md, 2 occurrences, test_net_heal_all_net_fault_list_empty_after_success confirmed in test_net_heal.py |
| FAULT-05 | 10-03 | List all active network faults | SATISFIED | 07-VALIDATION.md, 2 occurrences, test_net_fault_list_calls_reconcile_on_first_call confirmed in test_net_fault_list.py |
| FAULT-06 | 10-03 | Hard-reset a node | SATISFIED | 07-VALIDATION.md, 2 occurrences, test_node_crash_returns_running_nodestatus_after_restart_and_wait confirmed in test_node_crash.py |
| FAULT-07 | 10-03 | Fault state survives MCP server restart | SATISFIED | 07-VALIDATION.md, 3 occurrences, test_reconcile_prunes_partition_with_missing_tag confirmed in test_fault_registry.py |

**Orphaned requirements check:** REQUIREMENTS.md also contains ART-V2-01, ART-V2-02, OBS-V2-01, OBS-V2-02 (v2.0 future requirements). These are NOT mapped to Phase 10 in REQUIREMENTS.md and are not in scope for this phase. No orphaned requirements detected for phase 10.

---

### Anti-Patterns Found

No anti-patterns detected across all 7 VALIDATION.md files. No TODO, FIXME, placeholder, stub, or incomplete section markers found in any file.

---

### Human Verification Required

None. All required artifacts are documentation files with content that can be fully verified programmatically against the test suite.

---

### Gaps Summary

No gaps. All 7 VALIDATION.md files exist, are substantive (each 81-89 lines with complete Per-Task Verification Maps, Requirement Coverage tables, and Validation Sign-Off sections), and all referenced test function names resolve to actual `def` statements in the test suite. All 364 tests pass.

---

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