Arch Linux

badt18

Member

Registered: 2010-09-21

Posts: 22

Restoring Raid5 Set Up on New Install

Hello,

I used to use arch linux about 12 months ago but my motherboard crap it self.

Any way my old set up had 4x1tb drives with software raid 5 and volume drives installed.

Now i got a complete fresh arch linux and wish to get my raid drives working again with out any data lost.

I havnt used any linux for about a year now so im not all that great with it not that i was back in the days anyway.

I have looked over the wiki but dont see anything about restoring it. And im too scared to follow the wiki for a new install of the raid just incase a loss all data.

Any help would be great

Thanks

Guybrush

Member

Registered: 2012-10-23

Posts: 6

Re: Restoring Raid5 Set Up on New Install

what does "cat /proc/mdstat" give you?
For me the raid was auto assembled by mdadm in the arch live medium

badt18

Member

Registered: 2010-09-21

Posts: 22

Re: Restoring Raid5 Set Up on New Install

Personalities  :  [raid6] [raid5] [raid4]
md127  :  active raid5 sdd1[0] sdc1[4]  sde1[2] sdb1[1]
              2930276352 blocks super 1.2 level 5, 512k chunk,
algorithm 2 [4/4] [uuuu]

so I'm guessing it active but I have tried mounting it but no
luck

65kid

Member

From: Germany

Registered: 2011-01-26

Posts: 663

Re: Restoring Raid5 Set Up on New Install

The raid seems to be fine. notice that the device is now /dev/md127. My guess is that you used to have it as /dev/md0 and mounting this obviously fails. In order for the raid to show up as /dev/md0 you have specify ARRAY in /etc/mdadm.conf.