[root@ceph-server2 ~]# rados -p testpool rm myobject1 
[root@ceph-server2 ~]# rados -p testpool rm myobject2 
[root@ceph-server2 ~]# rados -p testpool ls 
[root@ceph-server2 ~]# rados -p testpool rollback myobject1 testpool-snap 
rolled back pool testpool to snapshot testpool-snap
[root@ceph-server2 ~]# rados -p testpool ls 
myobject1
[root@ceph-server2 ~]# rados -p testpool rollback myobject2 testpool-snap 
rolled back pool testpool to snapshot testpoolsnap
[root@ceph-server2 ~]# rados -p testpool ls 
myobject1
myobject2