It seems that if some OSD are using journal devices, ceph user needs to be a member of "disk" group on Debian. Can someone confirm this ? By the way, in ceph-disk@.service, /bin/flock does not exists on Debian Jessie _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com