Description of Ceph storage configuration options

Configuration option = Default value	Description
[DEFAULT]
rados_connect_timeout = -1	(IntOpt) Timeout value (in seconds) used when connecting to ceph cluster. If value < 0, no timeout is set and default librados value is used.
rados_connection_interval = 5	(IntOpt) Interval value (in seconds) between connection retries to ceph cluster.
rados_connection_retries = 3	(IntOpt) Number of retries if connection to ceph cluster failed.
rbd_ceph_conf =	(StrOpt) Path to the ceph configuration file
rbd_cluster_name = ceph	(StrOpt) The name of ceph cluster
rbd_flatten_volume_from_snapshot = False	(BoolOpt) Flatten volumes created from snapshots to remove dependency from volume to snapshot
rbd_max_clone_depth = 5	(IntOpt) Maximum number of nested volume clones that are taken before a flatten occurs. Set to 0 to disable cloning.
rbd_pool = rbd	(StrOpt) The RADOS pool where rbd volumes are stored
rbd_secret_uuid = None	(StrOpt) The libvirt uuid of the secret for the rbd_user volumes
rbd_store_chunk_size = 4	(IntOpt) Volumes will be chunked into objects of this size (in megabytes).
rbd_user = None	(StrOpt) The RADOS client name for accessing rbd volumes - only set when using cephx authentication
volume_tmp_dir = None	(StrOpt) Directory where temporary image files are stored when the volume driver does not write them directly to the volume. Warning: this option is now deprecated, please use image_conversion_dir instead.