[Ocfs2-devel] mounting a snapshot for backup.

[Sunil Mushran]

Tools is enough. It supports all existing versions of the kernel fs.

On Jul 4, 2009, at 6:10 AM, sylarrrrrrr at aim.com wrote:

> 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 avai lable 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/20 08-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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>
>
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