HOWTO: iSCSI Target and Initiator configuration

Dirty setup iSCSI server(target)

1. Install iscsi server

shell# yum -y install scsi-target-utils

or

shell# rpm -ivh scsi-target-utils

2. Edit the configuration file and allow incoming connection to 3260

shell# vi /etc/tgt/targets.conf

# default

defaults-driver iscsi

add this parameter

<target iqn.2012-05.com.example:disk0>
        backing-store /dev/vg00/lvscis00
</target>

shell# vi /etc/sysconfig/iptables

add this

-A INPUT -p tcp -m state --state NEW -m tcp --dport 3260 -j ACCEPT

restart IPTABLES

shell# /etc/init.d/iptables restart

or in command line

/sbin/iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 3260 -j ACCEPT

save IPTABLES

shell# /etc/init.d/iptables save

3. Create disk for our iscsi using LVM

    vg name = vg00

    lv name  = lvscsi00

4. then start the iscsi server

shell# /etc/init.d/tgtd start

or

shell# service tgtd start

5. then lets test our server

-check the config and disk

shell#  tgtadm --lld iscsi --mode target --op show

on client side

shell# iscsiadm -m discovery -t st -p iscsiserver.example.com

NOTE:  you need to have iscsi client (initiator)

install this package: iscsi-initiator-utils


iSCSI Initiator
discover iSCSI target
iscsiadm -n discovery -t st -p 192.168.0.254


Login in one or more iSCSI targets
iscsiadm -m node -T iqn.2011-10.com.example:rdisks.demo -p 192.168.0.254 -l


Logout to disconnect temporary
iscsiadm -m node -T iqn.2011-10.com.example:rdisks.demo -p 192.168.0.254 -u


Delete the local record
iscsiadm -m node -T iqn.2011-10.com.example:rdisks.demo -p 192.168.0.254 -o delete