Hi folks, my cluster shows strange behavior, the only ssd pool on cluster with repsize 3 and pg/pgp size 512 which contains 300GB rbd image and only one snapshot occupies 11TB space! I have tried objectmap check / rebuild, fstrim etc. which couldn’t solve that problem, any help would be appreciated. ceph version 14.2.7 nautilus (stable) ceph df ------- RAW STORAGE: CLASS SIZE AVAIL USED RAW USED %RAW USED hdd 107 TiB 68 TiB 39 TiB 39 TiB 36.45 ssd 21 TiB 11 TiB 11 TiB 11 TiB 50.78 TOTAL 128 TiB 78 TiB 50 TiB 50 TiB 38.84 POOLS: POOL ID STORED OBJECTS USED %USED MAX AVAIL ssdshop 83 3.5 TiB 517.72k 11 TiB 96.70 124 GiB rados df -------- POOL_NAME USED OBJECTS CLONES COPIES MISSING_ON_PRIMARY UNFOUND DEGRADED RD_OPS RD WR_OPS WR USED COMPR UNDER COMPR ssdshop 11 TiB 537040 28316 1611120 0 0 0 11482773 15 GiB 44189589 854 GiB 0 B 0 B rbd du -p ssdshop ----------------- NAME PROVISIONED USED shp-de-300gb.rbd@snap_2020-12-12_20:30:00 300 GiB 289 GiB shp-de-300gb.rbd 300 GiB 109 GiB <TOTAL> 300 GiB 398 GiB crush_rule ----------- rule ssd { id 3 type replicated min_size 1 max_size 10 step take dc1 class ssd step chooseleaf firstn 2 type rack step emit step take dc2 class ssd step chooseleaf firstn -1 type rack step emit } BR Max