On Thu, Apr 21, 2016 at 11:41 AM, Mika c <mika.leaf666@xxxxxxxxx> wrote: > Hi xizhiyong, > Thanks for your infomation. I am using Jewel right now(10.1.2), the > setting "rbd_default_features = 3" not working for me. > And this setting will enable "exclusive-lock, object-map, fast-diff, > deep-flatten" features. Setting "rbd default features = 3" will ensure that new images are created with only layering and stripingv2 features enabled. To disable exclusive-lock, object-map, etc on the already created image, you have to use "rbd feature disable". Where are you setting it? It has to be set in the client-side ceph.conf, as it's the client who decides which feature bits to enable on creation. Setting it on the OSDs will have no effect. Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com