RE: ext3 filesystem corruption on md RAID1 device

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The last regular sync check did not show any inconsistencies. I have started another sync check now and will post the result when it is finished.

Best regards,
Reiner.

> -----Original Message-----
> From: Tim Small [mailto:tim@xxxxxxxxxxxxxxxx]
> Sent: Thursday, May 20, 2010 1:50 PM
> To: Buehl, Reiner
> Cc: linux-ide@xxxxxxxxxxxxxxx; linux-fsdevel@xxxxxxxxxxxxxxx
> Subject: Re: ext3 filesystem corruption on md RAID1 device
> 
> Buehl, Reiner wrote:
> > The two disks used in the RAID1 md device are both Seagate
> ST31000528AS that show no errors in long and short SMART test and
> Seatools. Memtest shows no memory problems.
> 
> 
> Have you tried:
> 
> echo 'check' > /sys/block/md<whatever>/md/sync_action
> 
> ... that should report discrepancies between the two sides of the
> mirror
> ...  Unfortunately, I don't think it reports which LBAs, but you could
> find this by hand using dd and md5sum or whatever.  After that, if you
> do have discrepancies, then you can investigate what form they take by
> comparing the blocks from the individual block devices, and viewing
> them
> in a hex editor etc. etc.
> 
> 
> 
> Tim.
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