Re: raid1 boot issues

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Lewis Shobbrook wrote:

On Thursday 25 August 2005 7:14 pm, you wrote:
Fdisk it and set partitions to Raid Autodetect (0xfd) possibly?

Tyler.
Nope already set fd....
Lewis Shobbrook wrote:
Hi All,
I have a problem attempting to boot a raid 1 system from lilo.  I have
succeeded at this many times in the past, but am completely stumped as to
what the issue is in this instance. I have the boot and root partitions
seperate on /dev/md0 & /dev/md1 respectively, both raid1.
The mdadm examination  for  the components is clean and the superblocks
appear as they ought.  I'm using Debian unstable with std. apt
kernel-image.  The correct modules are in place for the initrd.
The boot partition fails to mount during  the boot process...
fsck.ext3: invalid argument while trying to open /dev/md0
The superblock can not be read or does not describe a correct ext2
filesystem.... omitted usual stuff...
Root password for maintenance or Control-D to continue...

The bizarre thing is that it appears perfectly clean, I've re-zero'd the
superblocks and completely recreated the device, but the result is always
the same.
mdrun loads /dev/md0 in a clean state straight away and it mounts
cleanly.  /dev/md1 is no problem.
mdadm -E of the components is clean, as is mdadm -d for the device.
My fstab & mtab are the same as systems running the same kernel that work
fine.

I found the system laying around from about 12 months ago which had
originally been set-up using raidtools.  I upgraded the system using
dist-upgrade installed mdadm; after zeroing all superblocks for both
drives and component partitions, I created the devices with the following
...

mdadm -C /dev/md0 -l1 -n2 /dev/hda1 missing
reformatted ext3 and restored the files before adding the missing devices
and resyncing.
I'm stumped!
Anyone got any ideas?

Cheers,

Lewis
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Just a silly thought, but does your kernel have raid compiled in? 'cause if it's a module it will never have a chance to see it. How far in the boot process does your system go?

b-
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