Scientific Linux 6
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Configure iSCSI Initiator
2011/04/18
  Configure iSCSI Initiator. This example is based on the environment below.

dlp.srv.world
[10.0.0.30] - iSCSI Target

www.srv.world
[10.0.0.31] - iSCSI Initiator


[1] Configure iSCSI Initiator
[root@www ~]#
yum -y install iscsi-initiator-utils


[root@www ~]#
vi /etc/iscsi/iscsid.conf


# line 49: uncomment

node.session.auth.authmethod = CHAP

# line 53,54: uncomment and set username and password which set on iSCSI Target

node.session.auth.username =
username

node.session.auth.password =
password


# discover target

[root@www ~]#
iscsiadm -m discovery -t sendtargets -p 10.0.0.30

Starting iscsid:
[ OK ]

10.0.0.30:3260,1 iqn.2011-04.world.srv:target0

[root@www ~]#
chkconfig iscsi on

[root@www ~]#
chkconfig iscsid on


# confirm status after discovery

[root@www ~]#
iscsiadm -m node -o show

# BEGIN RECORD 2.0-872
node.name = iqn.2011-04.world.srv:target0
node.tpgt = 1
node.startup = automatic
iface.hwaddress = <empty>
iface.ipaddress = <empty>
iface.iscsi_ifacename = default
iface.net_ifacename = <empty>
iface.transport_name = tcp
iface.initiatorname = <empty>
node.discovery_address = 10.0.0.30
node.discovery_port = 3260
node.discovery_type = send_targets
node.session.initial_cmdsn = 0
node.session.initial_login_retry_max = 8
node.session.xmit_thread_priority = -20
node.session.cmds_max = 128
node.session.queue_depth = 32
node.session.auth.authmethod = CHAP
node.session.auth.username = username
node.session.auth.password = ********
node.session.auth.username_in = <empty>
node.session.auth.password_in = <empty>
node.session.timeo.replacement_timeout = 120
node.session.err_timeo.abort_timeout = 15
node.session.err_timeo.lu_reset_timeout = 30
node.session.err_timeo.tgt_reset_timeout = 30
node.session.err_timeo.host_reset_timeout = 60
node.session.iscsi.FastAbort = Yes
node.session.iscsi.InitialR2T = No
node.session.iscsi.ImmediateData = Yes
node.session.iscsi.FirstBurstLength = 262144
node.session.iscsi.MaxBurstLength = 16776192
node.session.iscsi.DefaultTime2Retain = 0
node.session.iscsi.DefaultTime2Wait = 2
node.session.iscsi.MaxConnections = 1
node.session.iscsi.MaxOutstandingR2T = 1
node.session.iscsi.ERL = 0
node.conn[0].address = 10.0.0.30
node.conn[0].port = 3260
node.conn[0].startup = manual
node.conn[0].tcp.window_size = 524288
node.conn[0].tcp.type_of_service = 0
node.conn[0].timeo.logout_timeout = 15
node.conn[0].timeo.login_timeout = 15
node.conn[0].timeo.auth_timeout = 45
node.conn[0].timeo.noop_out_interval = 5
node.conn[0].timeo.noop_out_timeout = 5
node.conn[0].iscsi.MaxXmitDataSegmentLength = 0
node.conn[0].iscsi.MaxRecvDataSegmentLength = 262144
node.conn[0].iscsi.HeaderDigest = None
node.conn[0].iscsi.IFMarker = No
node.conn[0].iscsi.OFMarker = No
# END RECORD

# login to target

[root@www ~]#
iscsiadm -m node --login

Logging in to [iface: default, target: iqn.2011-04.world.srv:target0, portal: 10.0.0.30,3260]
Login to [iface: default, target: iqn.2011-04.world.srv:target0, portal: 10.0.0.30,3260] successful.

# confirm session

[root@www ~]#
iscsiadm -m session -o show

tcp: [1] 10.0.0.30:3260,1 iqn.2011-04.world.srv:target0

# confirm partitions

[root@www ~]#
cat /proc/partitions

major minor #blocks name

8
0
31457280
sda

8
1
512000
sda1

8
2
30944256
sda2

253
0
20971520
dm-0

253
1
6160384
dm-1

253
2
3809280
dm-2

8
16
104857600
sdb
# added new device provided from target

[2] Complete to configure iSCSI Initiator. It's possible to use the provided device from iSCSI Target as a local device.

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