A disk I have in a production machine went bad: d4: Mirror Submirror 0: d14 State: Okay Submirror 1: d24 State: Needs maintenance Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 120850176 blocks (57 GB) d14: Submirror of d4 State: Okay Size: 120850176 blocks (57 GB) Stripe 0: Device Start Block…