Is there a way to repair placement groups?

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Would it be feasible to try for an odd one out policy by default when 
repairing from a pool of 3 or more disks? Or is the most common cause of 
inconsistency most likely to not effect the primary?

-Michael

On 27/05/2014 23:55, Gregory Farnum wrote:
> Note that while the "repair" command *will* return your cluster to
> consistency, it is not guaranteed to restore the data you want to see
> there ? in general, it will simply put the primary OSD's view of the
> world on the replicas. If you have a massive inconsistency like that,
> you probably want to figure out what happened and if it's simply one
> bad OSD you can remove, or a more general problem.
> -Greg
> Software Engineer #42 @ http://inktank.com | http://ceph.com
>
>
> On Tue, May 27, 2014 at 3:17 PM, Michael <michael at onlinefusion.co.uk> wrote:
>> Hi Peter,
>>
>> Please use "ceph pg repair XX.xx". It might take a few seconds to kick in
>> after being instructed.
>>
>> -Michael
>>
>>
>> On 27/05/2014 21:40, phowell wrote:
>>> Hi
>>>
>>> First apologies if this is the wrong place to ask this question.
>>>
>>> We are running a small Ceph (0.79) cluster will about 12 osd's which are
>>> on top of a zfs raid 1+0 (for another discussion)... which were created on
>>> this version.
>>>
>>> Below I have included the ceph health detail which has rather a lot of
>>> inconsistent placement groups. The underlying zfs arrays have reported no
>>> problems and all the zpools are good. None of the 12 osd's are down or out.
>>>
>>> I could not find a way to repair these placement groups.  I have tried
>>> using 'ceph pg scrub XX.xx' with no effect. I would be grateful if someone
>>> could point me in the right direction to fix the problem.
>>>
>>> Thanks
>>>
>>> Peter Howell.
>>>
>>> root at durotar:/var/log/ceph# ceph health detail
>>> HEALTH_ERR 86 pgs inconsistent; 292 scrub errors
>>> pg 42.57 is active+clean+inconsistent, acting [2,3,10]
>>> pg 42.56 is active+clean+inconsistent, acting [8,9,1]
>>> pg 42.50 is active+clean+inconsistent, acting [4,1,9]
>>> pg 42.53 is active+clean+inconsistent, acting [3,1,8]
>>> pg 42.52 is active+clean+inconsistent, acting [11,7,3]
>>> pg 42.5d is active+clean+inconsistent, acting [4,1,6]
>>> pg 42.5c is active+clean+inconsistent, acting [7,9,5]
>>> pg 42.5e is active+clean+inconsistent, acting [6,10,0]
>>> pg 42.59 is active+clean+inconsistent, acting [5,0,11]
>>> pg 42.5b is active+clean+inconsistent, acting [1,3,6]
>>> pg 42.5a is active+clean+inconsistent, acting [8,9,4]
>>> pg 42.45 is active+clean+inconsistent, acting [3,0,9]
>>> pg 42.44 is active+clean+inconsistent, acting [10,8,5]
>>> pg 42.46 is active+clean+inconsistent, acting [5,0,6]
>>> pg 42.41 is active+clean+inconsistent, acting [5,2,8]
>>> pg 42.42 is active+clean+inconsistent, acting [7,10,5]
>>> pg 42.4d is active+clean+inconsistent, acting [1,5,11]
>>> pg 42.4c is active+clean+inconsistent, acting [0,5,6]
>>> pg 42.4f is active+clean+inconsistent, acting [6,9,1]
>>> pg 42.4e is active+clean+inconsistent, acting [5,0,6]
>>> pg 42.49 is active+clean+inconsistent, acting [6,9,0]
>>> pg 42.48 is active+clean+inconsistent, acting [2,4,7]
>>> pg 42.4a is active+clean+inconsistent, acting [9,8,4]
>>> pg 42.74 is active+clean+inconsistent, acting [3,2,11]
>>> pg 42.77 is active+clean+inconsistent, acting [5,2,8]
>>> pg 42.76 is active+clean+inconsistent, acting [9,7,3]
>>> pg 42.71 is active+clean+inconsistent, acting [8,10,0]
>>> pg 42.7c is active+clean+inconsistent, acting [8,10,0]
>>> pg 42.7f is active+clean+inconsistent, acting [10,6,0]
>>> pg 42.7e is active+clean+inconsistent, acting [2,4,9]
>>> pg 42.78 is active+clean+inconsistent, acting [4,1,11]
>>> pg 42.65 is active+clean+inconsistent, acting [8,11,4]
>>> pg 42.67 is active+clean+inconsistent, acting [0,3,11]
>>> pg 42.66 is active+clean+inconsistent, acting [4,1,7]
>>> pg 42.6c is active+clean+inconsistent, acting [4,2,6]
>>> pg 42.6f is active+clean+inconsistent, acting [9,7,5]
>>> pg 42.6e is active+clean+inconsistent, acting [8,11,4]
>>> pg 42.69 is active+clean+inconsistent, acting [10,8,4]
>>> pg 42.68 is active+clean+inconsistent, acting [9,7,0]
>>> pg 42.6b is active+clean+inconsistent, acting [10,7,4]
>>> pg 42.6a is active+clean+inconsistent, acting [10,8,2]
>>> pg 42.15 is active+clean+inconsistent, acting [9,6,4]
>>> pg 42.14 is active+clean+inconsistent, acting [6,10,3]
>>> pg 42.16 is active+clean+inconsistent, acting [4,2,9]
>>> pg 42.11 is active+clean+inconsistent, acting [6,9,2]
>>> pg 42.10 is active+clean+inconsistent, acting [11,6,2]
>>> pg 42.1f is active+clean+inconsistent, acting [4,0,10]
>>> pg 42.1e is active+clean+inconsistent, acting [10,7,1]
>>> pg 42.19 is active+clean+inconsistent, acting [3,0,9]
>>> pg 42.18 is active+clean+inconsistent, acting [5,0,9]
>>> pg 42.1b is active+clean+inconsistent, acting [7,9,5]
>>> pg 42.1a is active+clean+inconsistent, acting [3,0,9]
>>> pg 42.5 is active+clean+inconsistent, acting [11,7,3]
>>> pg 42.7 is active+clean+inconsistent, acting [7,11,0]
>>> pg 42.0 is active+clean+inconsistent, acting [7,10,5]
>>> pg 42.2 is active+clean+inconsistent, acting [11,6,4]
>>> pg 42.c is active+clean+inconsistent, acting [7,9,5]
>>> pg 42.f is active+clean+inconsistent, acting [2,3,7]
>>> pg 42.9 is active+clean+inconsistent, acting [2,3,10]
>>> pg 42.8 is active+clean+inconsistent, acting [10,7,2]
>>> pg 42.a is active+clean+inconsistent, acting [9,7,0]
>>> pg 42.35 is active+clean+inconsistent, acting [9,7,1]
>>> pg 42.37 is active+clean+inconsistent, acting [2,4,9]
>>> pg 42.36 is active+clean+inconsistent, acting [3,1,6]
>>> pg 42.30 is active+clean+inconsistent, acting [4,1,8]
>>> pg 42.33 is active+clean+inconsistent, acting [3,1,10]
>>> pg 42.32 is active+clean+inconsistent, acting [1,4,9]
>>> pg 42.3d is active+clean+inconsistent, acting [1,3,8]
>>> pg 42.3c is active+clean+inconsistent, acting [8,10,5]
>>> pg 42.3e is active+clean+inconsistent, acting [2,3,10]
>>> pg 42.39 is active+clean+inconsistent, acting [1,5,6]
>>> pg 42.3b is active+clean+inconsistent, acting [5,0,7]
>>> pg 42.3a is active+clean+inconsistent, acting [7,10,1]
>>> pg 42.25 is active+clean+inconsistent, acting [3,1,7]
>>> pg 42.24 is active+clean+inconsistent, acting [0,5,11]
>>> pg 42.26 is active+clean+inconsistent, acting [0,4,9]
>>> pg 42.21 is active+clean+inconsistent, acting [8,10,4]
>>> pg 42.20 is active+clean+inconsistent, acting [9,6,0]
>>> pg 42.23 is active+clean+inconsistent, acting [0,5,10]
>>> pg 42.22 is active+clean+inconsistent, acting [1,5,8]
>>> pg 42.2d is active+clean+inconsistent, acting [11,8,5]
>>> pg 42.2c is active+clean+inconsistent, acting [5,1,6]
>>> pg 42.2f is active+clean+inconsistent, acting [1,5,8]
>>> pg 42.29 is active+clean+inconsistent, acting [5,2,11]
>>> pg 42.28 is active+clean+inconsistent, acting [1,5,11]
>>> pg 42.2a is active+clean+inconsistent, acting [11,8,4]
>>> 292 scrub errors
>>>
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