Scientific Linux 6
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Configure iSCSI Target
2011/04/18
  Configure Storage Server with iSCSI. A storage on a network is called iSCSI Target, a Client which connects to iSCSI Target is called iSCSI Initiator.

This example is based on the environment below.
dlp.srv.world
[10.0.0.30] - iSCSI Target

www.srv.world
[10.0.0.31] - iSCSI Initiator


This example configures to create LVM partition on iSCSI Target, so it need to have enough areas to use. If your iSCSI Target does not have enough areas, add new hard drive.

[1] Configure iSCSI Target
# create a phisical volume

[root@dlp ~]#
pvcreate /dev/sdb1

  Physical volume "/dev/sdb1" successfully created

# create a volume group named "vg_target00"

[root@dlp ~]#
vgcreate -s 32M vg_target00 /dev/sdb1

  Volume group "vg_target00" successfully created

# create a logical volume named "lv_target00"

[root@dlp ~]#
lvcreate -L 100G -n lv_target00 vg_target00

  Logical volume "lv_target00" created

[root@dlp ~]#
yum -y install scsi-target-utils


[root@dlp ~]#
vi /etc/tgt/targets.conf


# if you set some devices, add <target>-</target> and set the same way with follows

# naming rule : [ iqn.yaer-month.domain:any name ]

<target iqn.2011-04.world.srv:target0>
   
# provided devicce as a iSCSI target

    backing-store /dev/vg_target00/lv_target00
   
# iSCSI Initiator's IP address you allow to connect

    initiator-address 10.0.0.31
   
# authentication info ( set anyone you like for "username", "password" )

    incominguser username password
</target>


[root@dlp ~]#
/etc/rc.d/init.d/tgtd start

Starting SCSI target daemon:
[ OK ]

[root@dlp ~]#
chkconfig tgtd on

[root@dlp ~]#
tgtadm --mode target --op show
# confirm status

Target 1: iqn.2011-04.world.srv:target0
System information:

Driver: iscsi

State: ready

I_T nexus information:

LUN information:

LUN: 0

Type: controller

SCSI ID: IET 00010000

SCSI SN: beaf10

Size: 0 MB

Online: Yes

Removable media: No

Backing store type: rdwr

Backing store path: None

LUN: 1

Type: disk

SCSI ID: IET 00010001

SCSI SN: beaf11

Size: 107374 MB

Online: Yes

Removable media: No

Backing store type: rdwr

Backing store path: /dev/vg_target00/lv_target00

Account information:

user

ACL information:

10.0.0.31

[2] Complete to configure iSCSI Target. See next step to configure iSCSI Initiatori.

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