garry nothere@nosuchplace.net wrote previously in alt.os.linux.ubuntu:

> garry wrote:
>> I just did a fresh install to 8.04 (needed to resize partitions and
>> stuff anyway) but now I can't get my RAID array to mount. I installed
>> mdadm and reset and it seems to have detected the array alright but when
>> I try to mount it I get a "must specify filesystem type" error.
>>
>> I'm afraid to experiment too much cause I'm paranoid I'll accidentally
>> wipe everything from the drives. Does anyone know what I'm doing wrong?
>
>
> Update:
>
> Just noticed that /proc/mdstat says the rais is active using sdb[0] and
> sdc[1]. I don't know why it's using sdb[0] as it used to be sdb[1]. Is
> this what's wrong? How can I fix this without corrupting what's on it?
>
> As I said I'm trying not to lose everything on it (don't want to have to
> re-rip all those CDs :( ) so I'm wary of experimenting myself.
>
> Anybody got any help? This is driving me nuts!!

Have you read mdadm manual?

# mdadm --examine /dev/sdb1

gives you details about your raid? or no superblock detected?

Have you created a mdadm.conf file with your raid info (details in mdadm
manual)