Hey Seb, > I have a test cluster on which I created pools rbd and cephfs (octopus), when > I copy a directory containing many small files on a pool rbd the USED part of > the ceph df command seems normal on the other hand on cephfs the USED part > seems really abnormal, I tried to change the blocksize > bluestore_min_alloc_size but it didn't change anything, would the solution be > to re-create the pool or outright the OSDs? bluestore_min_alloc_size has an effect only at OSD creation time; if you changed it after creating the OSDs, it will have had no effect yet. If your pool is on HDDs and this is pre-Pacific, then the default of 64k will have a huge amplification effect for small objects. Josh _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx