Moxa V2616A-C8-CT-W7E [62/111] Replace the failed disk

V2616A Linux Manaing Disks

5-4

Replace the Failed Disk

If the array is running in mirror mode and one of the disks fails, you should remove the failed disk with a new

one. In this case, the sdb1[0](F) means that the sdb disk is failed.

You can simulate this by manage one of the disk fail.

Use this command to remove the fail disk from raid.

Then replace the first drive with the new disk and add it into array.

Check mdstat and the array is automatically recovering now.

root@Moxa:~# cat /proc/mdstat

Personalities : [linear]

unused devices: <none>

md1 : active raid1 sdb1[1] sdc1[0](F)

17920384 blocks [2/1] [_U]

root@Moxa:~# mdadm --manage /dev/md0 --fail /dev/sdb1

mdadm: set /dev/sdb1 faulty in /dev/md0

root@Moxa:~# sync

root@Moxa:~# mdadm -r /dev/md0 /dev/sdb1

mdadm: hot removed /dev/sdb1 from /dev/md0

root@Moxa:~# mdadm -a /dev/md0 /dev/sdb1

root@Moxa:~# cat /proc/mdstat

Personalities : [raid1]

md0 : active raid1 sdb1[0] sdc1[1]

7806522 blocks super 1.2 [2/1] [_U]

[==>..................] recovery = 10.6% (831488/7806522) finish=0.9min

speed=118784K/sec

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