ahmedjaad's questions

Targetcli configuration got lost after server was rebooted, i tried to restore configuration from backup files with targetcli restoreconfig <backupFile> configuration is not restored output message of the command storageobjects or targets present, not restoring. below are outputs of targetcli ls and systemctl status -l target

targetcli ls
o- / ................................................................................................ [...]
  o- backstores ..................................................................................... [...]
  | o- block ......................................................................... [Storage Objects: 0]
  | o- fileio ........................................................................ [Storage Objects: 0]
  | o- pscsi ......................................................................... [Storage Objects: 0]
  | o- ramdisk ....................................................................... [Storage Objects: 0]
  o- iscsi ................................................................................... [Targets: 1]
  | o- iqn.2017-01.com.urgroup-tz:target ........................................................ [TPGs: 1]
  |   o- tpg1 ...................................................................... [no-gen-acls, no-auth]
  |     o- acls ................................................................................. [ACLs: 1]
  |     | o- iqn.2017-01.com.urgroup-tz:initiator ........................................ [Mapped LUNs: 0]
  |     o- luns ................................................................................. [LUNs: 0]
  |     o- portals ........................................................................... [Portals: 1]
  |       o- 0.0.0.0:3260 ............................................................................ [OK]
  o- loopback ................................................................................ [Targets: 0]

# systemctl status -l target
● target.service - Restore LIO kernel target configuration
   Loaded: loaded (/usr/lib/systemd/system/target.service; enabled; vendor preset: disabled)
   Active: active (exited) since Ij 2017-03-10 17:18:43 EST; 1 day 18h ago
 Main PID: 1342 (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/target.service

Mac 10 17:18:43 server1 target[1342]: Could not create StorageObject tools_disk: Cannot configure StorageObject because device /dev/cl/tools_lv is already in use, skipped
Mac 10 17:18:43 server1 target[1342]: Could not create StorageObject bamboo_disk: Cannot configure StorageObject because device /dev/cl/bamboo_lv is already in use, skipped
Mac 10 17:18:43 server1 target[1342]: Could not create StorageObject metadata_disk: Cannot configure StorageObject because device /dev/cl/ovirt_domain_metadata is already in use, skipped
Mac 10 17:18:43 server1 target[1342]: Could not find matching StorageObject for LUN 2, skipped
Mac 10 17:18:43 server1 target[1342]: Could not find matching StorageObject for LUN 1, skipped
Mac 10 17:18:43 server1 target[1342]: Could not find matching StorageObject for LUN 0, skipped
Mac 10 17:18:43 server1 target[1342]: Could not find matching TPG LUN 0 for MappedLUN 0, skipped
Mac 10 17:18:43 server1 target[1342]: Could not find matching TPG LUN 1 for MappedLUN 1, skipped
Mac 10 17:18:43 server1 target[1342]: Could not find matching TPG LUN 2 for MappedLUN 2, skipped
Mac 10 17:18:43 server1 systemd[1]: Started Restore LIO kernel target configuration.

I have upgraded oVirt engine from 3.6 to 4.0, after the upgrade i could not access the webadmin portal, the welcome page displays this message:

The client is not authorized to request an authorization. It's required to access the system using FQDN.

After reading on oVirt 4.04 Release Notes i learned this was due to Single Sign-On using OAUTH2 protocol, ovirt requires me to access the engine with FQDN, unfortunately I'm managing my resources remotely with just one public IP and i don't own any domain name. how do i get around this issue?. If it can be of any help, below is my oVirt engine setup summary

      Default SAN wipe after delete           : False
      Firewall manager                        : firewalld
      Update Firewall                         : True
      Host FQDN                               : ovirt
      Upgrade packages                        : True
      Engine database secured connection      : False
      Engine database host                    : localhost
      Engine database user name               : engine
      Engine database name                    : engine
      Engine database port                    : 5432
      Engine database host name validation    : False
      DWH database secured connection         : False
      DWH database host                       : localhost
      DWH database user name                  : ovirt_engine_history
      DWH database name                       : ovirt_engine_history
      DWH database port                       : 5432
      DWH database host name validation       : False
      Engine installation                     : True
      PKI organization                        : some_organization
      DWH installation                        : True
      Configure local DWH database            : True
      Engine Host FQDN                        : ovirt
      Configure Image I/O Proxy               : True
      Configure VMConsole Proxy               : True
      Configure WebSocket Proxy               : True

So this is what i want to achieve,

• Unmount home partition at /home
• Remove home logical volume /dev/cl/home
• create new home logical volume from the same volume group cl and name home
• make xfs filesystem
• mount the new logical volume at /home.

for that i wrote this bash script

umount -v /home/
if [ $? -ne 0 ]
then
  echo "Couldn't not unmount /home"
  exit 1
fi

# delete
lvremove /dev/cl/home

if [ $? -ne 0 ]
then
  echo "Couldn't delete LVM /dev/cl/home."
  exit 1
fi

# create home
lvcreate -L2G -n home cl

if [ $? -ne 0 ]
then
  echo "Couldn't create a new LVM /dev/cl/home."
  exit 1
fi

mkfs.xfs /dev/cl/home

if [ $? -ne 0 ]
then
  echo "Couldn't create a file system for /dev/cl/home."
  exit 1
fi

# restore home
mount /dev/cl/home /home/

the script fails at the line mkfs.xfs /dev/cl/home with msg mkfs.xfs: /dev/cl/home contains a mounted filesystem, it seems lvcreate -L2G -n home cl doesn't really create a new logical volume it just retrieves the previously removed logical volume with the same filesystem and mount it at the same mounting point /home, what could possible cause this?