[Ocfs2-devel] mounting a snapshot for backup.

[Ocfs2-devel] mounting a snapshot for backup.

[sylarrrrrrr at aim.com]

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/pipermail/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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[Ocfs2-devel] mounting a snapshot for backup.

[Marcos E. Matsunaga]

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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>
> ------------------------------------------------------------------------
>
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> Ocfs2-devel mailing list
> Ocfs2-devel at oss.oracle.com
> http://oss.oracle.com/mailman/listinfo/ocfs2-devel
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[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@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?

  


  
  

Dell
Laptops: Huge Savings on Popular Laptops - Deals starting at $399
  

  



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[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@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?
>>
>> Dell Laptops: Huge Savings on Popular Laptops - Deals starting at  
>> $399
>>
>> _______________________________________________
>> Ocfs2-devel mailing list
>> Ocfs2-devel at oss.oracle.com
>> http://oss.oracle.com/mailman/listinfo/ocfs2-devel
>
>
> An Excellent Credit Score is 750. See Yours in Just 2 Easy Steps!
> _______________________________________________
> Ocfs2-devel mailing list
> Ocfs2-devel at oss.oracle.com
> http://oss.oracle.com/mailman/listinfo/ocfs2-devel
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