Re: upstream/firefly exporting the same snap 2 times results in different exports

[Stefan Priebe <s.priebe@profihost.ag>]

So this is really this old bug?

http://tracker.ceph.com/issues/9806

Stefan
Am 21.07.2015 um 21:46 schrieb Josh Durgin:
> On 07/21/2015 12:22 PM, Stefan Priebe wrote:
>>
>> Am 21.07.2015 um 19:19 schrieb Jason Dillaman:
>>> Does this still occur if you export the images to the console (i.e.
>>> "rbd export cephstor/disk-116@snap - > dump_file")?
>>>
>>> Would it be possible for you to provide logs from the two "rbd export"
>>> runs on your smallest VM image?  If so, please add the following to
>>> the "[client]" section of your ceph.conf:
>>>
>>>    log file = /valid/path/to/logs/$name.$pid.log
>>>    debug rbd = 20
>>>
>>> I opened a ticket [1] where you can attach the logs (if they aren't
>>> too large).
>>>
>>> [1] http://tracker.ceph.com/issues/12422
>>
>> Will post some more details to the tracker in a few hours. It seems it
>> is related to using discard inside guest but not on the FS the osd is on.
>
> That sounds very odd. Could you verify via 'rados listwatchers' on an
> in-use rbd image's header object that there's still a watch established?
>
> Have you increased pgs in all those clusters recently?
>
> Josh
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