2 Disk array, /dev/sda & /dev/sdc where /dev/sdc has failed.
- Mark disk as failed
- # mdadm --manage /dev/md0 --fail /dev/sdc1
- Remove disk from array
- # mdadm --manage /dev/md0 --remove /dev/sdc1
- Remove physical disk
- Copy partition table from working disk
- # sfdisk -d /dev/sda | sfdisk /dev/sdc
- Add disk to mirror
- # mdadm --manage /dev/md0 --add /dev/sdc1
- Verify & check on rebuild status
- # mdadm --detail /dev/md0
- # cat /proc/mdstat
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