Help with XFS

[Thomas Førde]

the raid array is a FC SAN array consisting of DS4700 unit with EXP810 
expansion system

xfs_check first, xfs_repair -n, and xfs_repair

xfs_Repair -L has not been used.

its seismisc processed data, large text files.



Sincerely
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From:   Emmanuel Florac <eflorac at intellique.com>
To:     Thomas Førde <thomas.forde at bergenofs.no>
Cc:     xfs at oss.sgi.com
Date:   18.06.2010 13:35
Subject:        Re: Help with XFS



Le Fri, 18 Jun 2010 13:27:01 +0200
Thomas Førde <thomas.forde at bergenofs.no> écrivait:

> both the xfs_check and xfs_Reapir was done from a unmounted system,
> the system has not been mounted or used since.

That's good. Did you run xfs_repair -n first ? Did you run 
xfs_repair -L afterwards?

> its a IBM x3650 with stadnard 2x73GB disk.

But what about the RAID array? 
 
> [root at strmng04 ~]# cat /etc/issue
> CentOS release 4.7 (Final)
> Kernel \r on an \m
> 
> [root at strmng04 ~]# uname -a
> Linux strmng04 2.6.9-78.0.5.ELsmp #1 SMP Wed Oct 8 07:06:30 EDT 2008 
> x86_64 x86_64 x86_64 GNU/Linux
> 
> 
> there is no backup no, as how to backup 8 TB of data,very expensive
> tape wise.

You could have a disk backup on cheaper drives. And current tapes are
800 GB (LTO-3) or 1.5 TB (LTO-4), and libraries are cheaper nowadays.

> xfs_irecover ias been mentioned to me, so my fingers are crossed.
> 

If your data is a huge bunch of media files or similar, photorec really
can help you as a very last resort, though you'll have to manually sort
through all this data...

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