{
  "schemaVersion": 1,
  "id": "pool-degraded-scrub",
  "name": "Btrfs pool degraded scrub",
  "description": "A Btrfs pool keeps its identity and redundancy metadata while one member is missing and scrub reports errors.",
  "initialState": {
    "pool": {
      "id": "fixture-cache",
      "filesystem": "btrfs",
      "state": "degraded",
      "profile": "raid1",
      "memberStates": ["online", "missing"],
      "scrub": {"state": "failed", "errors": 3}
    }
  },
  "timeline": [{"atSeconds": 30, "action": "set-metric", "payload": {"metric": "storage.pool.utilization", "entity": "fixture-cache", "value": 91}}],
  "expectedOutcomes": [
    {"bySeconds": 0, "assertion": "Pool remains degraded and the missing member is visible."},
    {"bySeconds": 0, "assertion": "Scrub errors are visible as a warning/critical reason without exposing a scrub control."}
  ]
}