o- / ......................................................................................................................... [...]
  o- backstores .............................................................................................................. [...]
  | o- block .................................................................................................. [Storage Objects: 0]
  | o- fileio ................................................................................................. [Storage Objects: 0]
  | o- pscsi .................................................................................................. [Storage Objects: 0]
  | o- ramdisk ................................................................................................ [Storage Objects: 0]
  | o- user:fbo ............................................................................................... [Storage Objects: 0]
  | o- user:glfs .............................................................................................. [Storage Objects: 0]
  | o- user:qcow .............................................................................................. [Storage Objects: 0]
  | o- user:rbd ............................................................................................... [Storage Objects: 0]
  | o- user:zbc ............................................................................................... [Storage Objects: 0]
  o- iscsi ............................................................................................................ [Targets: 0]
  o- loopback ......................................................................................................... [Targets: 0]
  o- vhost ............................................................................................................ [Targets: 0]
