Procedure 7.9. Preparing iSCSI Storage

1. Install the scsi-target-utils package using the yum command as root on your storage server.

   # yum install -y scsi-target-utils

2. Add the devices or files you want to export to the /etc/tgt/targets.conf file. Here is a generic example of a basic addition to the targets.conf file:

   <target iqn.YEAR-MONTH.com.EXAMPLE:SERVER.targetX>
             backing-store /PATH/TO/DEVICE1 # Becomes LUN 1
             backing-store /PATH/TO/DEVICE2 # Becomes LUN 2
             backing-store /PATH/TO/DEVICE3 # Becomes LUN 3
   </target>

   Targets are conventionally defined using the year and month they are created, the reversed fully qualified domain that the server is in, the server name, and a target number.
3. Start the tgtd service.

   # service tgtd start

4. Make the tgtd start persistently across reboots.

   # chkconfig tgtd on

5. Open an iptables firewall port to allow clients to access your iSCSI export. By default, iSCSI uses port 3260. This example inserts a firewall rule at position 6 in the INPUT table.

   # iptables -I INPUT 6 -p tcp --dport 3260 -j ACCEPT

6. Save the iptables rule you just created.

   # service iptables save