I have a software raid 5 device /dev/md0 that is has 6 underlying devices:
/dev/hda1
/dev/sda1
/dev/sdb1
/dev/sdc1
/dev/sdd1
/dev/sde1
I've noticed that the /dev/hda IDE disk has some errors in SMART, and I would like to replace the disk. Note that it is not failed in the array, and the array is in a clean state. I just want to preemptively replace it with a SATA drive (/dev/sdf with /dev/sdf1 -- the same size as /dev/sda1).
How do I go about doing this?
My best guess is to do the following, but I'm not sure it's the correct / best path:
1. Use fdisk to create /dev/sdf1 as a Linux Raid auto-detect partition the same size as /dev/hda1 on /dev/sdf.
2. Add /dev/sdf1, which should automatically become a spare.
mdadm --add /dev/md0 /dev/sdf1
3. Mark the partition on the drive I want to remove as failed.
mdadm /dev/md0 --fail /dev/hda1
4. Remove /dev/hda from the system
Will this work? Will the array automatically sync the spare drive after step 3, or is there an extra step in there?
Thanks in advanced,
Mike
Linear Mode
