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From: David Andel on 2 Apr 2010 18:50
Hi

I've gor the problem that mdadm does not assemble my arrays during
initramfs time. However, when booting with Knoppix I can assemble all my
arrays with mdadm-startall without problem.

During initramfs I get:

(initramfs) mdadm -A /dev/md1 /dev/sd[ab]5
md: md1 stopped.
....
mdadm: /dev/md1 has been started with 2 drives.
(initramfs) md1: unknown partition table
(initramfs) mount /dev/md1 /root
mount: mounting /dev/md1 on /root failed: No such file or directory

The filesystem cannot be the problem. I can mount it from Knoppix after
assembling the array (from Knoppix).
Also, I load the respective modules early in the boot chain.

The maintainer of mdadm said that it does not have anything to do with
mdadm.

So what could be problem. I am investigating this problem since a long
time and did not find the reason yet...

Any help would be greatly appreciated.

David


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From: J R on 3 Apr 2010 04:10
Hi
mdadm error messages could be misleading.
First you should check if array is correctly assembled (/proc/mdstat).
If so I think some filesystem/device mapper/lvm/crypto modules are missing
from your initramfs.
Do you encrypt your array or use lvm?

--
J
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