xfs_repair failing.

xfs_repair failing.

[Emmanuel Florac]

Hi list,
I have a serious problem with a 60 TB XFS filesystem which looks
seriously hosed. It was repaired once earlier last week, but crashed
again after a repair friday and now xfs_repair fails with this message:

 bad magic # 0x1 in btcnt block 61/27137
 bad magic # 0xfffe68ff in btcnt block 61/201728942  

(xfs_repair 2.9.8)

The filesystem can only be mounted read-only at this point.

I suspect a RAID corruption (Adaptec 52445 with firmware 18252, Hitachi
HUA 3TB drives, RAID 6). The RAID controller have been replaced, but it
doesn't help. Any ideas?

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

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Re: xfs_repair failing.

[Joe Landman]

On 07/16/2012 05:51 PM, Emmanuel Florac wrote:
>
> Hi list,
> I have a serious problem with a 60 TB XFS filesystem which looks
> seriously hosed. It was repaired once earlier last week, but crashed
> again after a repair friday and now xfs_repair fails with this message:
>
>   bad magic # 0x1 in btcnt block 61/27137
>   bad magic # 0xfffe68ff in btcnt block 61/201728942
>
> (xfs_repair 2.9.8)
>
> The filesystem can only be mounted read-only at this point.
>
> I suspect a RAID corruption (Adaptec 52445 with firmware 18252, Hitachi
> HUA 3TB drives, RAID 6). The RAID controller have been replaced, but it
> doesn't help. Any ideas?
>

Can you update the xfs tools to the current (3.1.8 I think)?  Also, 
which kernel is being used?



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Joseph Landman, Ph.D
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email: landman@scalableinformatics.com
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Re: xfs_repair failing.

[Emmanuel Florac]

Le Mon, 16 Jul 2012 17:56:59 -0400 vous écriviez:

> Can you update the xfs tools to the current (3.1.8 I think)?  Also, 
> which kernel is being used?
> 

We'll try running a recent enough version of xfs_repair tomorrow. The
kernel is 3.2.21 at the moment. The xfs filesystem looks like this:

xfs_info /dev/dm-0
meta-data=/dev/mapper/vg0-raid   isize=256    agcount=71,
agsize=268435440 blks =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=19013298176,
imaxpct=1 =                       sunit=16     swidth=32 blks
naming   =version 2              bsize=4096  
log      =internal               bsize=4096   blocks=32768, version=2
         =                       sectsz=512   sunit=16 blks,
lazy-count=1 realtime =none                   extsz=131072 blocks=0,
rtextents=0



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

[Emmanuel Florac]

Le Mon, 16 Jul 2012 17:56:59 -0400 vous écriviez:

> Can you update the xfs tools to the current (3.1.8 I think)?  Also, 
> which kernel is being used?
> 

I hadn't the latest version at hand, but we tried with a 3.1.4 version
and it failed in exactly the same manner. I tend to suspect an
incomptibility between the 3 TB drives and the RAID controller, but I
can't be sure. Did anyone heard of any such problem?

Apparently only the XFS filesystem fails; another (reiserfs) filesystem
on another partition on the same RAID array didn't suffer from any
problem.

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

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