Guys - I have a problem on my home PC. I am posting from it now however something is wrong with one of my two mirrors.
I have 2 Western Digital S-ATA drives on my PC. Exactly identical models.
I partitioned them so that
/dev/sda3 & /dev/sdb3 = /dev/md0
/dev/md0 is mounted on /
/dev/sda4 & /dev/sdb4 = /dev/md1
/dev/md1 is mounted on /home
However the problem is this...
tunafish:/home/cwilliams# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sda4
135275264 blocks [2/1] [U_]
md0 : active raid1 sdb4(S) sdb3 sda3
19534976 blocks [2/2] [UU]
unused devices: <none>
It appears I am running on 1/2 a mirror on /home and although I can still use my system perfectly, I would like to repair this problem. I know the disk is fully functional and works perfectly - I think I somehow just messed or mixed things up and I don't have any RAID experience to resolve this so I am asking for any help on resolving this.