Configure iSCSI Initiator2015/12/02

Configure iSCSI Initiator.

This example is based on the environment below.

+----------------------+          |          +----------------------+
| [   iSCSI Target   ] |10.0.0.30 | 10.0.0.31| [ iSCSI Initiator  ] |
|     dlp.srv.world    +----------+----------+   client.srv.world   |
|                      |                     |                      |
+----------------------+                     +----------------------+

[1]	Configure iSCSI Initiator.

client:~#

zypper -n install open-iscsi

client:~#

vi /etc/iscsi/iscsid.conf

# line 58: uncomment

node.session.auth.authmethod = CHAP

# line 62,63: uncomment and set username and password which set on iSCSI Target

node.session.auth.username =

username

node.session.auth.password =

password

client:~#

/etc/init.d/open-iscsi start

client:~#

chkconfig open-iscsi on

# discover target

client:~#

iscsiadm -m discovery -t sendtargets -p 10.0.0.30

Loading iscsi modules:  tcp                              done
Starting iSCSI initiator service:                        done
Setting up iSCSI targets:                                unused
10.0.0.30:3260,1 iqn.2015-12.world.srv:target00

# confirm status after discovery

client:~#

iscsiadm -m node -o show

# BEGIN RECORD 2.0-873.suse
node.name = iqn.2015-12.world.srv:target00
node.tpgt = 1
node.startup = manual
node.leading_login = No
.....
.....

# login to target

client:~#

iscsiadm -m node --login

Logging in to [iface: default, target: iqn.2015-12.world.srv:target00, portal: 10.0.0.30,3260] (multiple)
Login to [iface: default, target: iqn.2015-12.world.srv:target00, portal: 10.0.0.30,3260] successful.

# confirm established session

client:~#

iscsiadm -m session -o show

tcp: [1] 10.0.0.30:3260,1 iqn.2015-12.world.srv:target00 (non-flash)

# confirm partitions

client:~#

cat /proc/partitions

major minor  #blocks  name

 253        0   31457348 sda
 253        1    2103296 sda1
 253        2   29352960 sda2
   8        0   10485760 sdb

# added new device provided from target as [sdb]

[2]	It's possible to use iSCSI device like follows.

client:~#

zypper -n install parted

# create a label

client:~#

parted --script /dev/sdb "mklabel msdos"

# create a partition

client:~#

parted --script /dev/sdb "mkpart primary 0% 100%"

# format with EXT4

client:~#

mkfs.ext4 /dev/sdb1

# mount

client:~#

mount /dev/sdb1 /mnt

client:~#

df -hT

Filesystem     Type   Size  Used Avail Use% Mounted on
/dev/sda2      ext3    28G  3.3G   24G  13% /
udev           tmpfs  1.9G  108K  1.9G   1% /dev
tmpfs          tmpfs  1.9G  648K  1.9G   1% /dev/shm
/dev/sdb1      ext4   9.9G  151M  9.2G   2% /mnt

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