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.
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