Re: Objects Stuck Degraded

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Hi Everyone,
Just an update to this in case anyone has the same issue. This seems
to have been caused by ceph osd reweight-by-utilization. Because we
have two pools that map to two separate sets of disks and one pool was
more full than the other the reweight-by-utilization had reduced the
weight of the osd's in one pool down to around 0.3. This seems to have
caused the crush map not to be able to find a suitable osd for the 2nd
copy.
Changing the reweight weights back up to near 1 has resolved the issue.

Regards,
Richard

On 25 January 2017 at 10:58, Richard Bade <hitrich@xxxxxxxxx> wrote:
> Hi Everyone,
> I've got a strange one. After doing a reweight of some osd's the other
> night our cluster is showing 1pg stuck unclean.
>
> 2017-01-25 09:48:41 : 1 pgs stuck unclean | recovery 140/71532872
> objects degraded (0.000%) | recovery 2553/71532872 objects misplaced
> (0.004%)
>
> When I query the pg it shows one of the osd's is not up.
>
>     "state": "active+remapped",
>     "snap_trimq": "[]",
>     "epoch": 231928,
>     "up": [
>         155
>     ],
>     "acting": [
>         155,
>         105
>     ],
>     "actingbackfill": [
>         "105",
>         "155"
>     ],
>
> I've tried restarting the osd's, ceph pg repair, ceph pg 4.559
> list_missing, ceph pg 4.559 mark_unfound_lost revert.
> Nothing works.
> I've just tried setting osd.105 out, waiting for backfill to evacuate
> the osd and stopping the osd process to see if it'll recreate the 2nd
> set of data but no luck.
> It would seem that the primary copy of the data on osd.155 is fine but
> the 2nd copy on osd.105 isn't there.
>
> Any ideas how I can force rebuilding the 2nd copy? Or any other ideas
> to resolve this?
>
> We're running Hammer
> ceph version 0.94.9 (fe6d859066244b97b24f09d46552afc2071e6f90)
>
> Regards,
> Richard
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