Any help would be appreciated. I tried to follow several guides on the net, but getting an error, shown below.

# uname -rv
2.6.32-431.17.1.el6.x86_64 #1 SMP Wed May 7 23:32:49 UTC 2014
# yum install -y scsi-target-utils
# chkconfig tgtd on
# dd if=/dev/zero of=/iscsi/img01.img count=0 bs=1 seek=1G
# cat /etc/tgt/targets.conf
default-driver iscsi
<target iqn.2014-08.dssi:target1>
backing-store /iscsi/img01.img
initiator-address 10.0.0.254
</target>
# /etc/init.d/tgtd start
Starting SCSI target daemon: [ OK ]
tgtadm: invalid request
Command:
tgtadm -C 0 --lld iscsi --op new --mode logicalunit --tid 1 --lun 1 -b /iscsi/img01.img
exited with code: 22.