On 12/03/2012 17:38, Carl Engstrom wrote:
resetting mdadm superblock
--------------------------------------------------------------------------------
Hey folks,
I'm having some issues with my md array after upgrading to 11.04.
[...]
Number Major Minor RaidDevice State
this 1 8 17 1 active sync /dev/sdb1
0 0 8 1 0 active sync /dev/sda1
1 1 8 17 1 active sync /dev/sdb1
--------
the array will start with:
mdadm -A --update=super-minor /dev/md0 /dev/sdb1 /dev/sdc1
So it starts just fine if you specify the devices...
Anyone know what's going on?
--update=super-minor is working fine; both devices have a preferred
minor device number of zero, as they should for the array to be /dev/md0.
What happens if you
mdadm --stop /dev/md0
mdadm --assemble --scan --verbose /dev/md0
?
Where do you want to mount /dev/md0?
What messages do you get during boot-up (dmesg) about why md0 isn't
being assembled?
What's in your /etc/mdadm.conf?
If /etc/mdadm.conf says sda1 and sdb1, fix it and do whatever you need
to do on Ubuntu to rebuild your initrd/initramfs (so that your edited
mdadm.conf goes into it), then reboot.
Hope something somewhere in amongst this lot helps...
Cheers,
John.
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