Sep  1 19:39:14  kernel: ceph: mds0 hung
Sep  1 19:39:30  kernel: libceph: mds0 a.b.c.d:6800 connection reset
Sep  1 19:39:30  kernel: libceph: reset on mds0
Sep  1 19:39:30  kernel: ceph: mds0 closed our session
Sep  1 19:39:30  kernel: ceph: mds0 reconnect start
Sep  1 19:39:30  kernel: ceph: mds0 reconnect denied
Sep  1 19:39:36  kernel: libceph: mds0 a.b.c.d:6800 io error
Sep  1 19:39:40  kernel: libceph: mds0 a.b.c.d:6800 io error
Sep  1 19:40:39  kernel: ceph: mds0 caps stale