o- / ......................................................................................................................... [...]
  o- bdevs ................................................................................................................... [...]
  | o- aio .............................................................................................................. [Bdevs: 1]
  | | o- sample ........................................................................................... [Size=$(FP)M, Not claimed]
  | o- error ............................................................................................................ [Bdevs: 1]
  | | o- EE_Malloc1 ...................................................................................... [Size=$(FP)M, Not claimed]
  | o- iscsi ............................................................................................................ [Bdevs: 0]
  | o- logical_volume ................................................................................................... [Bdevs: 1]
  | | o- $(X)-$(X)-$(X)-$(X)-$(X) .................................................. [lvs/lvol, Size=$(FP)M, Not claimed]
  | o- malloc ........................................................................................................... [Bdevs: 4]
  | | o- Malloc0 ............................................................................................. [Size=$(FP)M, Claimed]
  | | o- Malloc1 ............................................................................................. [Size=$(FP)M, Claimed]
  | | o- Malloc2 ......................................................................................... [Size=$(FP)M, Not claimed]
  | | o- Malloc3 ......................................................................................... [Size=$(FP)M, Not claimed]
  | o- null ............................................................................................................. [Bdevs: 1]
  | | o- null_bdev ....................................................................................... [Size=$(FP)M, Not claimed]
  | o- nvme ............................................................................................................. [Bdevs: 1]
  | | o- Nvme0n1 $(S) [Size=$(FP)G, Claimed]
  | o- pmemblk .......................................................................................................... [Bdevs: 0]
  | o- rbd .............................................................................................................. [Bdevs: 0]
  | o- split_disk ....................................................................................................... [Bdevs: 4]
  | | o- Nvme0n1p0 $(S) [Size=$(FP)G, Not claimed]
  | | o- Nvme0n1p1 $(S) [Size=$(FP)G, Not claimed]
  | | o- Nvme0n1p2 $(S) [Size=$(FP)G, Not claimed]
  | | o- Nvme0n1p3 $(S) [Size=$(FP)G, Not claimed]
  | o- virtioblk_disk ................................................................................................... [Bdevs: 0]
  | o- virtioscsi_disk .................................................................................................. [Bdevs: 0]
  o- iscsi ................................................................................................................... [...]
  | o- auth_groups ..................................................................................................... [Groups: 0]
  | o- global_params ......................................................................................................... [...]
  | | o- allow_duplicated_isid: False ........................................................................................ [...]
  | | o- chap_group: 0 ....................................................................................................... [...]
  | | o- default_time2retain: 20 ............................................................................................. [...]
  | | o- default_time2wait: 2 ................................................................................................ [...]
  | | o- disable_chap: False ................................................................................................. [...]
  | | o- error_recovery_level: 0 ............................................................................................. [...]
  | | o- first_burst_length: 8192 ............................................................................................ [...]
  | | o- immediate_data: True ................................................................................................ [...]
  | | o- max_connections_per_session: 2 ...................................................................................... [...]
  | | o- max_queue_depth: 64 ................................................................................................. [...]
  | | o- max_sessions: 128 ................................................................................................... [...]
  | | o- min_connections_per_core: 4 ......................................................................................... [...]
  | | o- mutual_chap: False .................................................................................................. [...]
  | | o- node_base: iqn.2016-06.io.spdk ...................................................................................... [...]
  | | o- nop_in_interval: 30 ................................................................................................. [...]
  | | o- nop_timeout: 60 ..................................................................................................... [...]
  | | o- require_chap: False ................................................................................................. [...]
  | o- initiator_groups ...................................................................................... [Initiator groups: 0]
  | o- iscsi_connections .......................................................................................... [Connections: 0]
  | o- portal_groups ............................................................................................ [Portal groups: 0]
  | o- target_nodes .............................................................................................. [Target nodes: 0]
  o- lvol_stores .................................................................................................. [Lvol stores: 1]
  | o- lvs ................................................................................................ [Size=$(FP)M, Free=$(FP)M]
  o- nvmf .................................................................................................................... [...]
  | o- subsystem ................................................................................................... [Subsystems: 1]
  |   o- nqn.2014-08.org.nvmexpress.discovery ....................................................... [st=Discovery, Allow any host]
  |     o- hosts ........................................................................................................ [Hosts: 0]
  |     o- listen_addresses ......................................................................................... [Addresses: 0]
  o- vhost ................................................................................................................... [...]
    o- block ................................................................................................................. [...]
    | o- vhost_blk1 $(S) [$(S)]
    | | o- Nvme0n1p0 ......................................................................................................... [...]
    | o- vhost_blk2 $(S) [$(S), Readonly]
    |   o- Nvme0n1p1 ......................................................................................................... [...]
    o- scsi .................................................................................................................. [...]
      o- vhost_scsi1 $(S) [$(S)]
      | o- Target_0 .......................................................................................... [LUNs: 1,TargetID: 0]
      |   o- Malloc2 ......................................................................................................... [...]
      o- vhost_scsi2 $(S) [$(S)]
        o- Target_0 .......................................................................................... [LUNs: 1,TargetID: 0]
        | o- Malloc3 ......................................................................................................... [...]
        o- Target_1 .......................................................................................... [LUNs: 1,TargetID: 1]
        | o- Nvme0n1p2 ....................................................................................................... [...]
        o- Target_2 .......................................................................................... [LUNs: 1,TargetID: 2]
          o- Nvme0n1p3 ....................................................................................................... [...]