Hi Istvan, > So this means if we are doing some operation which involved recovery, we should not do another one until this trimming not done yet? Let's say I've added new host with full of drives, once the rebalance finished, we should leave the cluster to trim osdmap before I add another host? Ah, no, sorry if I gave the wrong impression. If you have Nautilus 14.2.12+, Octopus 15.2.5+, or Pacific, then, as long as you don't have any down+in OSDs, osdmaps should be trimmed. Josh _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx