ceph-monstore-tool /var/lib/ceph/mon/ceph-ufm03 dump-keys |grep osd_snap| cut -c-29 |uniq -c
      2 osd_snap / purged_snap_10_000
      1 osd_snap / purged_snap_12_000
     75 osd_snap / purged_snap_13_000
      4 osd_snap / purged_snap_14_000
 778106 osd_snap / purged_snap_15_000
    861 osd_snap / purged_snap_1_0000
    323 osd_snap / purged_snap_4_0000
     88 osd_snap / purged_snap_5_0000
      2 osd_snap / purged_snap_7_0000
      2 osd_snap / purged_snap_8_0000
      2 osd_snap / removed_epoch_10_0
      1 osd_snap / removed_epoch_12_0
     75 osd_snap / removed_epoch_13_0
      4 osd_snap / removed_epoch_14_0
2316417 osd_snap / removed_epoch_15_0
    970 osd_snap / removed_epoch_1_00
    324 osd_snap / removed_epoch_4_00
     89 osd_snap / removed_epoch_5_00
      2 osd_snap / removed_epoch_7_00
      2 osd_snap / removed_epoch_8_00
      2 osd_snap / removed_snap_10_00
      1 osd_snap / removed_snap_12_00
     75 osd_snap / removed_snap_13_00
      4 osd_snap / removed_snap_14_00
2720849 osd_snap / removed_snap_15_00
   1161 osd_snap / removed_snap_1_000
    379 osd_snap / removed_snap_4_000
     89 osd_snap / removed_snap_5_000
      2 osd_snap / removed_snap_7_000
      2 osd_snap / removed_snap_8_000