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Linux L7 LINUX-057 · 27 min

RAID rebuild targets the wrong device after a degraded mdadm recovery

The array is degraded but recoverable, and the biggest risk now is re-adding or marking the wrong member while interpreting device names under pressure.

LinuxIncident LeadershipLevel 7Team27 min
Scenario

The array is degraded but recoverable, and the biggest risk now is re-adding or marking the wrong member while interpreting device names under pressure.

What to check first
  • Identify the primary failure signal in the RAID Recovery Safety scenario.
  • Separate visible symptoms from the underlying technical dependency.
  • Describe the safest recovery path and the follow-up prevention work.
Checking checklist
  1. Summarize the current impact and the last known change.
  2. Collect direct evidence from logs, runtime state, and configuration before changing anything.
  3. Separate immediate recovery from permanent prevention work.
Recovery and prevention

Choose the smallest safe recovery action first, then record the prevention work that reduces repeat incidents.

Questions worth viewing together
Should I translate commands, logs, or product names?

No. Keep commands, logs, file names, APIs, and product names unchanged, then explain the reasoning in the selected UI language.

What should the answer focus on?

State the root cause, the evidence that supports it, and the safest recovery direction.

Why can the scenario remain in the original language?

The source scenario is treated as an incident artifact. Guidance, checklist, hints, and explanations can be localized around it.