Re: RAID scrubbing

[Michael Evans <mjevans1983@gmail.com>]

On Fri, Apr 9, 2010 at 6:46 PM, Justin Maggard <jmaggard10@gmail.com> wrote:
> On Fri, Apr 9, 2010 at 6:41 PM, Michael Evans <mjevans1983@gmail.com> wrote:
>> On Fri, Apr 9, 2010 at 6:28 PM, Justin Maggard <jmaggard10@gmail.com> wrote:
>>> Hi all,
>>>
>>> I've got a system using two RAID5 arrays that share some physical
>>> devices, combined using LVM.  Oddly, when I "echo repair >
>>> /sys/block/md0/md/sync_action", once it finishes, it automatically
>>> starts a repair on md1 also, even though I haven't requested it.
>>> Also, if I try to stop it using "echo idle >
>>> /sys/block/md0/md/sync_action", a repair starts on md1 within a few
>>> seconds.  If I stop that md1 repair immediately, sometimes it will
>>> respawn and start doing the repair again on md1.  What should I be
>>> expecting here?  If I start a repair on one array, is it supposed to
>>> automatically go through and do it on all arrays sharing that
>>> personality?
>>>
>>> Thanks!
>>> -Justin
>>>
>>
>> Is md1 degraded with an active spare?  It might be delaying resync on
>> it until the other devices are idle.
>
> No, both arrays are redundant.  I'm just trying to do scrubbing
> (repair) on md0; no resync is going on anywhere.
>
> -Justin
>

First: Reply to all.

Second, if you insist that things are not as I suspect:

cat /proc/mdstat

mdadm -Dvvs

mdadm -Evvs
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html