Hi, This shows one RBD image is treated as one object, and it's mapped to one PG. "object" here means a RBD image. # ceph osd map vm fcb09c9c-4cd9-44d8-a20b-8961c6eedf8e_disk osdmap e18381 pool 'vm' (4) object 'fcb09c9c-4cd9-44d8-a20b-8961c6eedf8e_disk' -> pg 4.c7a78d40 (4.0) -> up ([4,17,6], p4) acting ([4,17,6], p4) When show the info of this image, what's that "12800 objects" mean? And what's that "order 23 (8 MiB objects)" mean? What's "objects" here? # rbd info vm/fcb09c9c-4cd9-44d8-a20b-8961c6eedf8e_disk rbd image 'fcb09c9c-4cd9-44d8-a20b-8961c6eedf8e_disk': size 100 GiB in 12800 objects order 23 (8 MiB objects) snapshot_count: 0 id: affa8fb94beb7e block_name_prefix: rbd_data.affa8fb94beb7e format: 2 Thanks! Tony _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx