On Tue Mar 15, 2011 at 11:30:59AM +0000, Bas van Schaik wrote:
> All,
>
> I'm seeing a non-zero mismatch_cnt (in fact, it's 1704) on my RAID-6
> array consisting of 8 devices on kernel 2.6.38. After replacing some
> hardware, I decided to trigger a MD repair by issuing:
> echo repair > /sys/devices/virtual/block/md5/md/sync_action
>
> Directly after issuing this command, the mismatch_cnt is reset to 0 and
> MD starts checking the array. However, the mismatch_cnt increases during
> this check - resulting in exactly the same count as seen before.
> Shouldn't 'repair' yield a zero mismatch_cnt? I think I have seen
> 'repair' work on other RAID-6 arrays?
>
The mismatch_cnt is incremented during repair to indicate how many
errors were repaired. If you want to be certain though, you'd need to
re-run 'check' afterwards.
Cheers,
Robin
--
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( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> |
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