Intermittent crashes - xfs_repair finds no errors

[Eric Sandeen]

On 5/24/13 8:10 AM, Emmanuel Florac wrote:
> Le Fri, 24 May 2013 11:59:02 +0200
> Ole Tange <tange at binf.ku.dk> écrivait:
> 
>> # uname -a
>> Linux lemaitre 3.2.0-0.bpo.1-amd64 #1 SMP Sat Feb 11 08:41:32 UTC 2012
>> x86_64 GNU/Linux
>>
>> May 13 11:43:31 lemaitre kernel: [507964.074856] XFS (md3): metadata
>> I/O error: block 0x18dcf8 ("xfs_trans_read_buf") error 5 buf count
>> 4096

"metadata IO error" kind of speaks for itself.  And error 5 is EIO.

It looks for all the world like you are getting read errors from the device.

> What are the few previous lines of /var/log/messages before these?
> There could be some hardware related message, or some hint of corrupted
> metadata.

Yep, full dmesg might be good.

tracing on

xfs_trans_read_buf_io
and
xfs_buf_read

might give some insight if dmesg doesn't.

-Eric