What about /sys/block/krbdX/holders? Nothing in there? Jan > On 25 Sep 2015, at 19:44, Jeff Epstein <jeff.epstein@xxxxxxxxxxxxxxxx> wrote: > > On 09/25/2015 12:53 PM, Jan Schermer wrote: >> What are you looking for in lsof? Did you try looking for the major/minor number of the rbd device? >> Things that could hold the device are devicemapper, lvm, swraid and possibly many more, not sure if all that shows in lsof output... >> > I searched for the rbd's mounted block device name, of course, which didn't turn up anything. Just now I tried searching for the minor device number, but I didn't see anything obviously useful. lsof usually just shows processes, so if the the device is being held by a kernel module or inaccurate refcount, lsof wouldn't help. > > Jeff _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com