0 * * * *	root	[ -e /usr/bin/cephfs-snap ] && /usr/bin/cephfs-snap hourly
0 0 * * *	root	[ -e /usr/bin/cephfs-snap ] && /usr/bin/cephfs-snap daily
0 0 * * 1	root	[ -e /usr/bin/cephfs-snap ] && /usr/bin/cephfs-snap weekly
0 0 * 1 *	root	[ -e /usr/bin/cephfs-snap ] && /usr/bin/cephfs-snap monthly
0 0 1 1 *	root	[ -e /usr/bin/cephfs-snap ] && /usr/bin/cephfs-snap yearly