Description of configuration options for storage_ceph

Configuration option=Default value	Description
rbd_ceph_conf=	(StrOpt) path to the ceph configuration file to use
rbd_flatten_volume_from_snapshot=False	(BoolOpt) flatten volumes created from snapshots to remove dependency
rbd_max_clone_depth=5	(IntOpt) maximum number of nested clones that can be taken of a volume before enforcing a flatten prior to next clone. A value of zero disables cloning
rbd_pool=rbd	(StrOpt) the RADOS pool in which rbd volumes are stored
rbd_secret_uuid=None	(StrOpt) the libvirt uuid of the secret for the rbd_uservolumes
rbd_user=None	(StrOpt) the RADOS client name for accessing rbd volumes - only set when using cephx authentication
volume_tmp_dir=None	(StrOpt) where to store temporary image files if the volume driver does not write them directly to the volume