XFS data lost recover

XFS data lost recover

[Duarte Franco]

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Hi

 

I have a Linux RHEL 5.3 server with a XFS partition over lvm on an
infortrend Fc storage. 

Recently we have a system failure that corrupt the XFS partition. After a
xfs_restore the partition was recovered but the lost+found directory contain
about 5.5TB of inode files. (almost the total size 7TB)

 

After that the partitions were used to write a few more data, without any
problem. 

 

I would like to ask if there is any way to recover the files in lost+found
directory? Do you have any service to recover these files? 

 

If possible I would prefer to be contacted by email.

 

Best Regards

 

Duarte Franco

AIA – Area Infra-estruturas Aplicacionais 

 _________________________________________________

FCT, FCCN

Av. do Brasil, 101 Apartado 50435 1708-001 Lisboa

Telf. 300 005 257  Fax 351 21 8472167

 <blocked::http://www.fccn.pt/> http://www.fccn.pt/

 

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Re: XFS data lost recover

[Eric Sandeen]

On 6/10/14, 2:23 PM, Duarte Franco wrote:
> Hi
> 
>  
> 
> I have a Linux RHEL 5.3 server with a XFS partition over lvm on an
> infortrend Fc storage.

> Recently we have a system failure that corrupt the XFS partition.
> After a xfs_restore the partition was recovered but the lost+found
> directory contain about 5.5TB of inode files. (almost the total size
> 7TB)
> 

presumably you mean xfs_repair?

lost+found/ is populated with files for which name data has been lost.
There is no great way to recover the names; if there were, xfs_repair
would do it.

> 
> After that the partitions were used to write a few more data, without
> any problem.
> 
> 
> 
> I would like to ask if there is any way to recover the files in
> lost+found directory? Do you have any service to recover these
> files?

The files themselves are not lost, but they have lost their names.

Depending on the data you have in the files, perhaps they are still
recognizable, and could be renamed back to their original locations
via script?

-Eric

> 
> 
> If possible I would prefer to be contacted by email.
> 
>  
> 
> Best Regards
> 
>  
> 
> Duarte Franco
> 
> *AIA*– Area Infra-estruturas Aplicacionais
> 
>  _________________________________________________
> 
> FCT, FCCN
> 
> Av. do Brasil, 101 Apartado 50435 1708-001 Lisboa
> 
> Telf. 300 005 257  Fax 351 21 8472167
> 
> http://www.fccn.pt/ <blocked::http://www.fccn.pt/>
> 
>  
> 
> *Aviso de Confidencialidade*
> 
> Esta mensagem é exclusivamente destinada ao seu destinatário, podendo conter informação CONFIDENCIAL, cuja divulgação está expressamente vedada nos termos da lei. Caso tenha recepcionado indevidamente esta mensagem, solicitamos-lhe que nos comunique esse mesmo facto por esta via ou para o telefone +351 218440100 devendo apagar o seu conteúdo de imediato.
> 
> This message is intended exclusively for its addressee. It may containCONFIDENTIAL information protected by law. If this message has been received by error, please notify us via e-mail or by telephone +351 218440100 and delete it immediately.
> 
>  
> 
> 
> 
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs
> 

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RE: XFS data lost recover

[Duarte Franco]

Thanks for you reply


-----Original Message-----
From: Eric Sandeen [mailto:sandeen@sandeen.net] 
Sent: 10 de junho de 2014 20:31
To: Duarte Franco; xfs@oss.sgi.com
Subject: Re: XFS data lost recover

On 6/10/14, 2:23 PM, Duarte Franco wrote:
> Hi
> 
>  
> 
> I have a Linux RHEL 5.3 server with a XFS partition over lvm on an 
> infortrend Fc storage.

> Recently we have a system failure that corrupt the XFS partition.
> After a xfs_restore the partition was recovered but the lost+found 
> directory contain about 5.5TB of inode files. (almost the total size
> 7TB)
> 

presumably you mean xfs_repair?

lost+found/ is populated with files for which name data has been lost.
There is no great way to recover the names; if there were, xfs_repair would
do it.

Yes it was a xfs_repair.

> 
> After that the partitions were used to write a few more data, without 
> any problem.
> 
> 
> 
> I would like to ask if there is any way to recover the files in
> lost+found directory? Do you have any service to recover these
> files?

The files themselves are not lost, but they have lost their names.

Depending on the data you have in the files, perhaps they are still
recognizable, and could be renamed back to their original locations via
script?

The files are essentially http pages but are thousands of them! Is there any
way to restore the name of the files or is only by their content?

Regards
Duarte

-Eric

> 
> 
> If possible I would prefer to be contacted by email.
> 
>  
> 
> Best Regards
> 
>  
> 
> Duarte Franco
> 
> *AIA*– Area Infra-estruturas Aplicacionais
> 
>  _________________________________________________
> 
> FCT, FCCN
> 
> Av. do Brasil, 101 Apartado 50435 1708-001 Lisboa
> 
> Telf. 300 005 257  Fax 351 21 8472167
> 
> http://www.fccn.pt/ <blocked::http://www.fccn.pt/>
> 
>  
> 
> *Aviso de Confidencialidade*
> 
> Esta mensagem é exclusivamente destinada ao seu destinatário, podendo
conter informação CONFIDENCIAL, cuja divulgação está expressamente vedada
nos termos da lei. Caso tenha recepcionado indevidamente esta mensagem,
solicitamos-lhe que nos comunique esse mesmo facto por esta via ou para o
telefone +351 218440100 devendo apagar o seu conteúdo de imediato.
> 
> This message is intended exclusively for its addressee. It may
containCONFIDENTIAL information protected by law. If this message has been
received by error, please notify us via e-mail or by telephone +351
218440100 and delete it immediately.
> 
>  
> 
> 
> 
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs
> 


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Re: XFS data lost recover

[Emmanuel Florac]

Le Wed, 11 Jun 2014 15:20:32 +0100
"Duarte  Franco" <duarte.franco@fccn.pt> écrivait:

> The files are essentially http pages but are thousands of them! Is
> there any way to restore the name of the files or is only by their
> content?
> 

There is no way unfortunately. I've made a perl script that creates a
database of file with their names and inodes to cover precisely this
problem, but you would need to have run it once beforeend to index the
filesystem...

You should try to run the latest xfs_repair first however; you probably
used a very old version. In a similar case a newer xfs_repair was able
to find many files that the previous release couldn't reattach properly
to the filesystem tree.

-- 
------------------------------------------------------------------------
Emmanuel Florac     |   Direction technique
                    |   Intellique
                    |	<eflorac@intellique.com>
                    |   +33 1 78 94 84 02
------------------------------------------------------------------------

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