Mailinglist Archive: opensuse (2831 mails)

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Re: [SLE] Problems with 10.1 and raid1
  • From: Michael Menge <michael.menge@xxxxxxxxxxxxxxxxxxxx>
  • Date: Fri, 14 Jul 2006 14:56:11 +0200
  • Message-id: <20060714145611.xs22jzz0cu800kws@xxxxxxxxxxxxxxxxxxxxx>
I found the problem the /etc/mdadm.conf had the wrong UUIDs

echo "DEVICES partitions" > /etc/mdadm.conf
mdadm -Ebsc partitions >> /etc/mdadm.conf

solved the problem

Quoting Joachim Schrod <jschrod@xxxxxxx>:

Michael Menge wrote:

I have clonend a System with tar and sfdisk and now i have Problems Booting the System. The Rootfs is on /dev/md1, Swap on /dev/md0
I dont understand why the devieces for /dev/md1 are not found but the devices for /dev/md0 and why they are found on the original system.

For safety you might want to remove the resume=/dev/md0 boot parameter
from grub/menu.lst while you're debugging the problem. The "attempting
manual resume" message looks suspicious to me, that might invoke a
relict from your cloning. (Resuming from a mirrored swap disk didn't
work for me anyhow in 10.0; I didn't try it in 10.1 yet.)

Furthermore, you might want to check with mdadm --detail /dev/md1 and
mdadm --examine on the disks that are part of that meta-device that
the UUIDs of the md and the disks are the same and that they match the
entry in /etc/mdadm.conf.

I don't know exactly how the bootup code (i.e., madam --assemble
--scan) determines which partition belongs into the which md; but I
read that the UUIDs have something to do with it. At least they are
recorded in the md superblock, and mdadm.conf lists them as the only
information -- so what else is used for scanning and assembling? (That
might be wrong, though.)


Joachim Schrod Email: jschrod@xxxxxxx
Roedermark, Germany

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M.Menge Tel.: (49) 7071/29-70316
Universitaet Tuebingen Fax.: (49) 7071/29-5912
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