o- / ......................................................................................................................... [...]
  o- bdevs ................................................................................................................... [...]
  | o- aio .............................................................................................................. [Bdevs: 0]
  | o- error ............................................................................................................ [Bdevs: 0]
  | o- iscsi ............................................................................................................ [Bdevs: 0]
  | o- logical_volume ................................................................................................... [Bdevs: 0]
  | o- malloc ........................................................................................................... [Bdevs: 0]
  | o- null ............................................................................................................. [Bdevs: 0]
  | o- nvme ............................................................................................................. [Bdevs: 0]
  | o- pmemblk .......................................................................................................... [Bdevs: 0]
  | o- rbd .............................................................................................................. [Bdevs: 1]
  | | o- Ceph0 ......................................................................................... [Size=1000.0M, Not claimed]
  | o- split_disk ....................................................................................................... [Bdevs: 0]
  | o- virtioblk_disk ................................................................................................... [Bdevs: 0]
  | o- virtioscsi_disk .................................................................................................. [Bdevs: 0]
  o- lvol_stores .................................................................................................. [Lvol stores: 0]
  o- vhost ................................................................................................................... [...]
    o- block ................................................................................................................. [...]
    o- scsi .................................................................................................................. [...]