Re: Error mounting a reiserfs on renamed raid1

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Robin Hill schrieb:
On Fri Jan 25, 2008 at 01:48:32AM +0100, Clemens Koller wrote:

Hi there.

I am new to this list, however didn't find this effect nor a
solution to my problem in the archives or with google:

short story:
------------
A single raid1 as /dev/md0 containing a reiserfs (with important data)
assembled during boot works just fine:
$ cat /proc/mdstat
Personalities : [linear] [raid0] [raid1]
md0 : active raid1 hdg1[1] hde1[0]
      293049600 blocks [2/2] [UU]

The same raid1 moved to another machine as a fourth raid can be
assembled manually as /dev/md3 (to work around naming conflicts),
but it cannot be mounted anymore:
$ mdadm --assemble /dev/md3 --update=super-minor -m0 /dev/hde /dev/hdg
does not complain. /dev/md3 is created. But

It looks like you should be assembling the partitions, not the disks.
Certainly the mdstat entry above shows the array being formed from the
disks.  Try:
  mdadm --assemble /dev/md3 --update=super-minor -m0 /dev/hde1 /dev/hdg1

Argh, that was too simple. I thought I've tried to assemble the
partitions (/dev/hdx1) too instead of the whole disks but I guess
I was wrong.

A simple
mdadm --assemble /dev/md3 /dev/hde1 /dev/hdg1
did the job

Thank you!

Regards,

Clemens

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