Optional Arguments:
* [-h, --help] show the help message and exit
-* [--bluestore] filestore objectstore (not yet implemented)
-* [--filestore] filestore objectstore (current default)
+* [--bluestore] bluestore objectstore (default)
+* [--filestore] filestore objectstore
**prepare**
-Prepares a logical volume to be used as an OSD and journal using a ``filestore`` setup
-(``bluestore`` support is planned). It will not create or modify the logical volumes
+Prepares a logical volume to be used as an OSD and journal using a ``filestore``
+or ``bluestore`` (default) setup. It will not create or modify the logical volumes
except for adding extra metadata.
Usage::