Re: Multiple kernel RBD clients failures

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On Mon, Sep 30, 2013 at 11:50 PM, Eric Eastman <eric0e@xxxxxxx> wrote:
>
> Thank you for the reply
>
>
>> -28 == -ENOSPC (No space left on device). I think it's is due to the
>
> fact that some osds are near full.
>>
>>
>> Yan, Zheng
>
>
> I thought that may be the case, but I would expect that ceph health would
> tell me I had a full OSDs, but it is only saying they are near full:
>
>
>>> # ceph health detail
>>> HEALTH_WARN 9 near full osd(s)
>>> osd.9 is near full at 85%
>>> osd.29 is near full at 85%
>>> osd.43 is near full at 91%
>>> osd.45 is near full at 88%
>>> osd.47 is near full at 88%
>>> osd.55 is near full at 94%
>>> osd.59 is near full at 94%
>>> osd.67 is near full at 94%
>>> osd.83 is near full at 94%
>
>

Are these OSD's disks smaller than other OSD's. If they do, you need
to lower these OSD's weights.

Regards
Yan, Zheng

> As I still have lots of space:
>
>
>>> # ceph df
>>> GLOBAL:
>>>    SIZE     AVAIL     RAW USED     %RAW USED
>>>    249T     118T      131T         52.60
>>>
>>> POOLS:
>>>    NAME         ID     USED       %USED     OBJECTS
>>>    data               0      0                     0         0
>>>    metadata      1      0                     0         0
>>>    rbd                 2      8                     0         1
>>>    rbd-pool        3      67187G     26.30     17713336
>
>
> And I setup lots of Placement Groups:
>
> # ceph osd dump | grep 'rep size' | grep rbd-pool
> pool 3 'rbd-pool' rep size 2 min_size 1 crush_ruleset 0 object_hash rjenkins
> pg_num 4500 pgp_num 4500 last_change 360 owner 0
>
> Why did the OSDs fill up long before I ran out of space?
>




> Thanks,
>
> Eric
>
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