Description of Nexenta NFS driver configuration options

Configuration option = Default value	Description
[DEFAULT]
nexenta_mount_point_base = $state_path/mnt	(StrOpt) Base directory that contains NFS share mount points
nexenta_nms_cache_volroot = True	(BoolOpt) If set True cache NexentaStor appliance volroot option value.
nexenta_shares_config = /etc/cinder/nfs_shares	(StrOpt) File with the list of available nfs shares
nexenta_volume_compression = on	(StrOpt) Default compression value for new ZFS folders.