Re: Troubleshooting Incomplete PGs

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Hi Greg, Loic,

I think we have seen this as well (sent a mail to the list a week or so ago about incomplete pgs). I ended up giving up on the data and doing a force_create_pgs after doing a find on my OSDs and deleting the relevant pg dirs. If there are any logs etc you'd like to see for debugging / post-mortem, I'd be happy to send them along.

Cheers,
Lincoln

On Oct 28, 2014, at 4:11 PM, Gregory Farnum wrote:

> On Thu, Oct 23, 2014 at 6:41 AM, Chris Kitzmiller
> <ckitzmiller@xxxxxxxxxxxxx> wrote:
>> On Oct 22, 2014, at 8:22 PM, Craig Lewis wrote:
>> 
>> Shot in the dark: try manually deep-scrubbing the PG.  You could also try
>> marking various osd's OUT, in an attempt to get the acting set to include
>> osd.25 again, then do the deep-scrub again.  That probably won't help
>> though, because the pg query says it probed osd.25 already... actually , it
>> doesn't.  osd.25 is in "probing_osds" not "probed_osds". The deep-scrub
>> might move things along.
>> 
>> Re-reading your original post, if you marked the slow osds OUT, but left
>> them running, you should not have lost data.
>> 
>> 
>> That's true. I just marked them out. I did lose osd.10 (in addition to
>> out'ting those other two OSDs) so I'm not out of the woods yet.
>> 
>> If the scrubs don't help, it's probably time to hop on IRC.
>> 
>> 
>> When I issue the deep-scrub command the cluster just doesn't scrub it. Same
>> for regular scrub. :(
>> 
>> This pool was offering an RBD which I've lost my connection to and it won't
>> remount so my data is totally inaccessible at the moment. Thanks for your
>> help so far!
> 
> It looks like you are suffering from
> http://tracker.ceph.com/issues/9752, which we've not yet seen in-house
> but have had reported a few times. I suspect that Loic (CC'ed) would
> like to discuss your cluster's history with you to try and narrow it
> down.
> -Greg
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