CentOS 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: Loading iSCSI transport class v2.0-870.

iscsi: registered transport (tcp)

iscsi: registered transport (iser)

cxgb3i: tag itt 0x1fff, 13 bits, age 0xf, 4 bits.

iscsi: registered transport (cxgb3i)

cnic: Broadcom NetXtreme II CNIC Driver cnic v2.1.2 (May 26, 2010)

Broadcom NetXtreme II iSCSI Driver bnx2i v2.1.1 (Mar 24, 2010)

iscsi: registered transport (bnx2i)

iscsi: registered transport (be2iscsi)

[ OK ]

10.0.0.30:3260,1 iqn.2011-07.world.server: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.2011-07.world.server: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.2011-07.world.server:target0, portal: 10.0.0.30,3260]

scsi2 : iSCSI Initiator over TCP/IP

scsi 2:0:0:0: RAID IET Controller 0001 PQ: 0 ANSI: 5

scsi 2:0:0:1: Direct-Access IET VIRTUAL-DISK 0001 PQ: 0 ANSI: 5

Login to [iface: default, target: iqn.2011-07.world.server: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.2011-07.world.server:target0

# confirm partitions

[root@www ~]# cat /proc/partitions 

major minor #blocks name

8031457280sda

81512000sda1

8230944256sda2

253020971520dm-0

25316160384dm-1

25323809280dm-2

80104857600sdb

81104857600sdb1# added new device provided from target

# config for auto-mount when booting

[root@www ~]# vi /etc/fstab

/dev/mapper/VolGroup-lv_root /                      ext4    defaults        1 1

UUID=3d3f19a1-582f-4a29-a304-349750094b2c /boot     ext4    defaults        1 2

/dev/mapper/VolGroup-lv_swap swap                   swap    defaults        0 0

tmpfs                       /dev/shm                tmpfs   defaults        0 0

devpts                      /dev/pts                devpts  gid=5,mode=620  0 0

sysfs                       /sys                    sysfs   defaults        0 0

proc                        /proc                   proc    defaults        0 0

# add iSCSI filesystem

 /dev/sdb1                   /var/kvm                ext4    _netdev         0 0

[root@www ~]# chkconfig netfs on