Hi, i have installed ceph 9.21 on proxmox with kernel 4.2.8-1-pve. Afterwards I have enabled the features: rbd feature enable $IMG exclusive-lock rbd feature enable $IMG object-map rbd feature enable $IMG fast-diff During the night I have a cronjob which does a rbd snap create on each of my images and then an rbd export-diff I found out that my cronjob was hanging during the rbd snap create and does not create the snapshot. Also more worse, sometimes also the vms were hanging. What are your experiences with object maps ? For me it looks that they are not yet production ready. Thanks Christoph _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com