I am having an issue with a Linux RAID array I use as a NAS server. Everything seems to work with no issue. No files seem to be corrupted and everything is accessible, but I have found a problem with the configuration.
Ubuntu Server 10.10 (No GUI)
(1) 250 GB Western Digital HDD (Ubuntu)
(11) 1TB Western Digital HDDs (RAID5 Array)
I used Wemin for the basic setup of the RAID and I believe that is where my problem began.
sudo mdadm --examine –scan:
DEVICE partitions /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 /dev/sdj1 /dev/sdk1 /dev/sdl1
CREATE owner=root group=disk mode=0660 auto=yes
DEVICE /dev/sdb1 /dev/sdc1 /dev/sdd1
ARRAY /dev/md0 level=raid5 devices=/dev/sdb1,/dev/sdc1,/dev/sdd1,/dev/sde1,/dev/sdf1,/dev/sdg1,/dev/sdh1,/dev/sdi1,/dev/sdj1,/dev/sdk1,/dev/sdl1
ARRAY /dev/md0 level=raid5 num-devices=3 UUID=e6f6ec4e:fefe1ee2:e40a34ba:0ca07f7d
ARRAY /dev/md0 level=raid5 num-devices=11 UUID=e7d757df:a4dd8c94:e40a34ba:0ca07f7d
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid5 sdj1 sdh1 sdg1 sdi1 sdl1 sdk1 sdd1 sdb1 sde1 sdc1 sdf1
9767599360 blocks level 5, 64k chunk, algorithm 2 [11/11] [UUUUUUUUUUU]
I'm concerned because the mdadm.conf file has two DEVICE lines (not necessarily a problem), but only one ARRAY line that uses partitions from both DEVICE lines. The mdadm scan showed two different arrays. I would like to fix the mdadm.conf file, but am concerned about loosing data.
Can I simply combine the two DEVICE lists? Normally I would just guess and check, but I really don't want to loose this data.
Thanks for the help.