targetcli output,

ubuntu@ceph3:~$ sudo targetcli ls
sudo: unable to resolve host ceph3
o- / ......................................................................................................................... [...]
  o- backstores .............................................................................................................. [...]
  | o- fileio .................................................................................................. [6 Storage Objects]
  | | o- cephjournal.0.Wz7AxqsSBG ................................. [5.0G, /var/lib/iscsi-loopback/cephjournal.0.Wz7AxqsSBG, in use]
  | | o- cephjournal.1.v7GngA6p1m ................................. [5.0G, /var/lib/iscsi-loopback/cephjournal.1.v7GngA6p1m, in use]
  | | o- cephjournal.2.cNLoBX8mN4 ................................. [5.0G, /var/lib/iscsi-loopback/cephjournal.2.cNLoBX8mN4, in use]
  | | o- cephosd.0.Cy2LtdQAzS ........................................ [32.0G, /var/lib/iscsi-loopback/cephosd.0.Cy2LtdQAzS, in use]
  | | o- cephosd.1.zeWDqxRyh6 ........................................ [32.0G, /var/lib/iscsi-loopback/cephosd.1.zeWDqxRyh6, in use]
  | | o- cephosd.2.yz46XwbjNi ........................................ [32.0G, /var/lib/iscsi-loopback/cephosd.2.yz46XwbjNi, in use]
  | o- iblock ................................................................................................... [0 Storage Object]
  | o- pscsi .................................................................................................... [0 Storage Object]
  | o- rd_mcp ................................................................................................... [0 Storage Object]
  o- iscsi ............................................................................................................. [2 Targets]
  | o- iqn.2017-12.org.openstack.openstack-helm:cephjournal ................................................................ [1 TPG]
  | | o- tpg1 ............................................................................................................ [enabled]
  | |   o- acls ............................................................................................................ [1 ACL]
  | |   | o- iqn.1993-08.org.debian:01:7c276e15bd7d ................................................................ [3 Mapped LUNs]
  | |   |   o- mapped_lun0 ............................................................................................. [lun0 (rw)]
  | |   |   o- mapped_lun1 ............................................................................................. [lun1 (rw)]
  | |   |   o- mapped_lun2 ............................................................................................. [lun2 (rw)]
  | |   o- luns ........................................................................................................... [3 LUNs]
  | |   | o- lun0 ............................. [fileio/cephjournal.0.Wz7AxqsSBG (/var/lib/iscsi-loopback/cephjournal.0.Wz7AxqsSBG)]
  | |   | o- lun1 ............................. [fileio/cephjournal.1.v7GngA6p1m (/var/lib/iscsi-loopback/cephjournal.1.v7GngA6p1m)]
  | |   | o- lun2 ............................. [fileio/cephjournal.2.cNLoBX8mN4 (/var/lib/iscsi-loopback/cephjournal.2.cNLoBX8mN4)]
  | |   o- portals ...................................................................................................... [1 Portal]
  | |     o- 0.0.0.0:3260 ...................................................................................... [OK, iser disabled]
  | o- iqn.2017-12.org.openstack.openstack-helm:cephosd .................................................................... [1 TPG]
  |   o- tpg1 ............................................................................................................ [enabled]
  |     o- acls ............................................................................................................ [1 ACL]
  |     | o- iqn.1993-08.org.debian:01:7c276e15bd7d ................................................................ [3 Mapped LUNs]
  |     |   o- mapped_lun0 ............................................................................................. [lun0 (rw)]
  |     |   o- mapped_lun1 ............................................................................................. [lun1 (rw)]
  |     |   o- mapped_lun2 ............................................................................................. [lun2 (rw)]
  |     o- luns ........................................................................................................... [3 LUNs]
  |     | o- lun0 ..................................... [fileio/cephosd.0.Cy2LtdQAzS (/var/lib/iscsi-loopback/cephosd.0.Cy2LtdQAzS)]
  |     | o- lun1 ..................................... [fileio/cephosd.1.zeWDqxRyh6 (/var/lib/iscsi-loopback/cephosd.1.zeWDqxRyh6)]
  |     | o- lun2 ..................................... [fileio/cephosd.2.yz46XwbjNi (/var/lib/iscsi-loopback/cephosd.2.yz46XwbjNi)]
  |     o- portals ...................................................................................................... [1 Portal]
  |       o- 0.0.0.0:3260 ...................................................................................... [OK, iser disabled]
  o- qla2xxx ........................................................................................................... [0 Targets]
  o- vhost ............................................................................................................. [0 Targets]