Hi, Is there any config on Ceph that block/not perform space reclaim? I test on one pool which has only one image 1.8 TiB in used. rbd $p du im/root warning: fast-diff map is not enabled for root. operation may be slow. NAME PROVISIONED USED root 2.2 TiB 1.8 TiB I already removed all snaphots and now pool has only one image alone. I run both fstrim over the filesystem (XFS) and try rbd sparsify im/root (don't know what it is exactly but it mentions to reclaim something) It still shows the pool used 6.9 TiB which totally not make sense right? It should be up to 3.6 (1.8 * 2) according to its replica? POOLS: POOL ID PGS STORED OBJECTS USED %USED MAX AVAIL QUOTA OBJECTS QUOTA BYTES DIRTY USED COMPR UNDER COMPR im 19 32 3.5 TiB 918.34k 6.9 TiB 4.80 69 TiB N/A 10 TiB 918.34k 0 B 0 B I think now some of others pool have this issue too, we do clean up a lot but seems space not reclaimed. I estimate more than 50 TiB should be able to reclaim, actual usage of this cluster much less than current reported number. Thank you for your help. ________________________________ This message is confidential and is for the sole use of the intended recipient(s). It may also be privileged or otherwise protected by copyright or other legal rules. If you have received it by mistake please let us know by reply email and delete it from your system. It is prohibited to copy this message or disclose its content to anyone. Any confidentiality or privilege is not waived or lost by any mistaken delivery or unauthorized disclosure of the message. All messages sent to and from Agoda may be monitored to ensure compliance with company policies, to protect the company's interests and to remove potential malware. Electronic messages may be intercepted, amended, lost or deleted, or contain viruses.