Indeed.
http://paste.ubuntu.com/13102405/
unit-ceph-1[20040]: 2015-11-04 08:46:46 INFO unit.ceph/1.mon-relation-changed logger.go:40 ceph-disk: Error: Device /dev/sda1 is in use by a device-mapper mapping (dm-crypt?): dm-0
Indeed.
http:// paste.ubuntu. com/13102405/
unit-ceph-1[20040]: 2015-11-04 08:46:46 INFO unit.ceph/ 1.mon-relation- changed logger.go:40 ceph-disk: Error: Device /dev/sda1 is in use by a device-mapper mapping (dm-crypt?): dm-0