Ceph » CephFS

John, is this likely to have been a dup of #11294? We can tell by checking out the ceph-fuse log if it's still available (although probably not on this one given the lag time).

I copied the ceph-client log into that folder, although we're missing the server logs.

2015-06-01T06:50:15.928 INFO:teuthology.orchestra.run.typica012.stderr:fusermount: failed to unmount /home/ubuntu/cephtest/mnt.0: Device or resource busy
2015-06-01T06:50:15.930 INFO:tasks.cephfs.fuse_mount:Failed to unmount ceph-fuse on ubuntu@typica012.front.sepia.ceph.com, aborting...

        except run.CommandFailedError:
            log.info('Failed to unmount ceph-fuse on {name}, aborting...'.format(name=self.client_remote.name))

            # abort the fuse mount, killing all hung processes
            if self._fuse_conn:
                self.run_python(dedent(""" 
                import os
                path = "/sys/fs/fuse/connections/{0}/abort" 
                if os.path.exists(path):
                    open(path, "w").write("1")
                """).format(self._fuse_conn))
                self._fuse_conn = None

            stderr = StringIO()

aborting fuse can explian the ll_ref leaking

Hmm, there shouldn't have been any activity on the mount by this point. Maybe we've got some other kind of bug, though.