ISCSI TARGET SERVER HOW TO ON
REDHAT6-----------------------------------------------------------
(THIS Practical is created in vmware machine )
lab setup :-
server : ip add 192.168.0.10
hostname = server.example.com
client= ip add 192.168.0.100
hostname= client1.exmaple.com
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# install following package
# yum -y install scsi*
then
# chkconfig tgtd on
step 2 add vitual hardisk and create
lvm on that hardisk
and mount it the
step 3
# vim /etc/tgt/targets.conf
And add this line at end of the file
<target
iqn.2011-2012.com.exmaple:server.target1>
backing-store /dev/wgroup/whare
</target>
then test discover the iSCSI target
from the target server itself, using the following command:
#iscsiadm -m discovery -t sendtargets -p 192.168.0.10192.168.0.10:3260,1 iqn.2011-2012.com.exmaple:server.target1
then u succseefully created ISCSI TARGET SERVER
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Client side := 1st step Run follwing command
# iscsiadm -m discovery -t st -p 192.168.0.10(serverip)
192.168.0.10:3260,1 iqn.2011-2012.com.exmaple:server.target1
then copy only for (iqn.2011-2012.com.exmaple:server.target1)
and past it like this
# iscsiadm -m node -T iqn.2011-2012.com.exmaple:server.target1 –login
it will give mesg successful
# then run the fdisk -l itwill show u server side disk thats it
Hey dude.. do we need to restart tgtd service after step 3 ?? Bcoz in my setup, luns are not visible in client servers.
ReplyDeleteHave to force reload the tgtd service, it will make the lun visible in client,
ReplyDelete[root@tgtsrv ~]# /etc/init.d/tgtd force-reload
Force-updating SCSI target daemon configuration: [ OK ]
[root@tgtsrv ~]
After force reload try fdisk -l (or) /etc/init.d/iscsi status
In client,
1.) fdisk -l will list the lun as the new hard disk
2.) By "/etc/init.d/iscsi status", you will be able to see the number of lun & disk name
Attached SCSI devices:
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Host Number: 1 State: running
scsi1 Channel 00 Id 0 Lun: 0
scsi1 Channel 00 Id 0 Lun: 1
Attached scsi disk sda State: running