m (Draft) |
(Added mganisin's loop back instructions and start fleshing out common functions) |
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*# editing ''/etc/sysconfig/iptables'' | *# editing ''/etc/sysconfig/iptables'' | ||
*# Then restarting ''iptables'': <pre># service iptables restart</pre> | *# Then restarting ''iptables'': <pre># service iptables restart</pre> | ||
== Backing Store == | |||
When configured, the tgtd service will present a block device to iSCSI initiators. You may use a LVM logical volume, a disk partition, a whole disk, or a loop back partition. For this document, we will create a ''/dev/loop0'' loop back device. | |||
# First, create a 8Gib file: <pre># dd if=/dev/zero of=/tmp/iscsi-disk1 bs=1M count=8000</pre> | |||
# Next, create a loopback device: <pre># losetup /dev/loop0 /tmp/iscsi-disk1</pre> | |||
== Selinux == | == Selinux == | ||
FIXME - detail any selinux considerations on the target. | FIXME - detail any selinux considerations on the target. | ||
== Service startup == | |||
Configure the tgtd service to start on boot. Type: | |||
<pre> | |||
# service tgtd start | |||
# chkconfig tgtd on | |||
</pre> | |||
= How to ... = | |||
The following sections detail common actions you might perform using the ''tgtadm'' utility with the configuration used above. | |||
== List active targets == | |||
At any time you can list the active targets by typing: <pre># tgtadm --lld iscsi --op show --mode target</pre> | |||
Revision as of 17:54, 11 February 2009
About
This page is intended to outline a series of steps need to quickly get a scsi-target-utils based iSCSI software target working.
Most of these instructions can also be found in a README provided by the scsi-target-utils package (see /usr/share/doc/scsi-target-utils-0.9.2/README.iscsi).
Installation
Start by installing the scsi-target-utils package.
# yum install scsi-target-utils
Configuration
Firewall
Ensure, port 3260 is available for incoming connection and there is no firewall in the way between target and test machine.
- Either stop your firewall:
# service iptables stop
- Or, open up port 3260 for traffic using:
# system-config-firewall
- Or, modify your iptables configuration manually by
- editing /etc/sysconfig/iptables
- Then restarting iptables:
# service iptables restart
Backing Store
When configured, the tgtd service will present a block device to iSCSI initiators. You may use a LVM logical volume, a disk partition, a whole disk, or a loop back partition. For this document, we will create a /dev/loop0 loop back device.
- First, create a 8Gib file:
# dd if=/dev/zero of=/tmp/iscsi-disk1 bs=1M count=8000
- Next, create a loopback device:
# losetup /dev/loop0 /tmp/iscsi-disk1
Selinux
FIXME - detail any selinux considerations on the target.
Service startup
Configure the tgtd service to start on boot. Type:
# service tgtd start # chkconfig tgtd on
How to ...
The following sections detail common actions you might perform using the tgtadm utility with the configuration used above.
List active targets
At any time you can list the active targets by typing:
# tgtadm --lld iscsi --op show --mode target