[Ocfs2-devel] mounting a snapshot for backup.

[sylarrrrrrr at aim.com]

Hi, 



 Thanks :)




BTW, Do I need to upgrade the kernel module too, or just the ocfs2-tools package? 



If I need to upgrade the module too ... I am having trouble compiling it under debian lenny, I have posted about it in the users gourps.


-----Original Message-----
From: Marcos E. Matsunaga <Marcos.Matsunaga at oracle.com>
To: sylarrrrrrr at aim.com
Cc: ocfs2-devel at oss.oracle.com
Sent: Wed, Jul 1, 2009 12:45 pm
Subject: Re: [Ocfs2-devel] mounting a snapshot for backup.













  
  


http://oss.oracle.com/projects/ocfs2-tools/news/article_7.html





see tunefs.ocfs2 note.





sylarrrrrrr at aim.com wrote:


  
Hi

  
I have an ocfs2 volume
(1.4.1) on lvm2, which is made available on 2 nodes via dual primary
drbd that is on it. I wanted to backup my volume, so naturally I made a
snapshot of it via the lvm2, and tried to mount it for backing up.
However, I got the following error in dmesg :

  
[319981.478168]
(23483,0):ocfs2_fill_super:700 ERROR: Unable to create per-mount
debugfs root.

  
I then searched a bit,
and found that ocfs2 can't mount an already mounted volume, and I was
suggested to change the UUID of the snapshot device in order to be able
to mount it.

  
So I tried using
tunefs.ocfs2 and got the following error:

  
tunefs.ocfs2 1.4.1

tunefs.ocfs2: Trylock failed while locking down the cluster

  

So I searched 
a bit and found that there was a patch suggestion for
 --force option to tunefs,

  

  
http://oss.oracle.com/pipe
rmail/ocfs2-devel/2008-July/002447.html

  
and that it was
rejected,

  
http://oss.oracle.com/pipermail/ocfs2-devel/2008-July/002449.html

  
and some ominous
warnings,

  
http://oss.oracle.com/pipermail/ocfs2-devel/2008-July/002450.html

  
o well... now how am I
supposed to backup my live ocfs2 volume? Make a virtual machine that
will have just that snapshot device?

  


  
  

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