Hi, I would like to known how to enable object map on hammer ? I found a post hammer commit here: https://github.com/ceph/ceph/commit/3a7b28d9a2de365d515ea1380ee9e4f867504e10 "rbd: add feature enable/disable support" - Specifies which RBD format 2 features are to be enabled when creating - an image. The numbers from the desired features below should be added - to compute the parameter value: + Specifies which RBD format 2 feature should be enabled when creating + an image. Multiple features can be enabled by repeating this option + multiple times. The following features are supported: -.. option:: --image-features features +.. option:: --image-feature feature - +1: layering support - +2: striping v2 support - +4: exclusive locking support - +8: object map support + layering: layering support + striping: striping v2 support + exclusive-lock: exclusive locking support + object-map: object map support (requires exclusive-lock) So, in current hammer release, we can only setup objectmap and other features on rbd volume creation ? Do this patch allow to change features on the fly ? If yes, is it planned to backport it to hammer soon ? -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html