This is a Pliant (http://pliant.cams.ehess.fr/) script that should enable
you to make changes in a RAID configuration with (or with the hope of)
no data loss.
Lets take an example:
The old /etc/raidtab configuration file is:
raiddev /dev/md0
raid-level5
nr-raid-disks
> I currently have a 3 disk raid set running level 5. I would like to
> add another
> disk to the set bringing the set up to 4 disks. Is is possible to add the disk
> to the current raid without distroying data?
No. You will have to backup your array, rebuild it with 4 disks and then restore
from
