I have setup an mdm software raid on Fedora 13. I used 3 hard drives that are dedicated to the array (no partitions on any of them.) I get the following from my mdstat

################################################## ###########
[root@localhost ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md127 : active (read-only) raid5 sdb[1] sdc[3] sda[0]
2930274304 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]

unused devices: <none>
################################################## ###########

I know I can make the array read write with mdadm -w /dev/md127, but I'm a bit concerned that it does not boot as such, and that the devices are labelled as 0,1,3. why is there no 2? I had an e-mail sent to root at one point saying that the array was in a degraded state, but it didn't say much else. It had previously (before a reboot) showed the disks as 3/2, not 3/3 ( I think it was 3/2, I'm just using my memory.)

Is there anything here that I should be worried about? I haven't done a lot of md work to know what is normal.


Thanks guys.