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Configure iSCSI Initiator
2012/06/05 |
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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
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| [1] | Configure iSCSI Initiator |
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[root@www ~]#
yum -y install iscsi-initiator-utils
[root@www ~]#
vi /etc/iscsi/iscsid.conf # line 53: uncomment node.session.auth.authmethod = CHAP # line 57,58: 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: [ 159.142006] Loading iSCSI transport class v2.0-870. [ 159.154392] iscsi: registered transport (tcp) [ 159.194273] iscsi: registered transport (iser) [ 159.219007] libcxgbi:libcxgbi_init_module: tag itt 0x1fff, 13 bits, age 0xf, 4 bits. [ 159.219713] libcxgbi:ddp_setup_host_page_size: system PAGE 4096, ddp idx 0. [ 159.236976] Chelsio T3 iSCSI Driver cxgb3i v2.0.0 (Jun. 2010) [ 159.237519] iscsi: registered transport (cxgb3i) [ 159.245287] Chelsio T4 iSCSI Driver cxgb4i v0.9.1 (Aug. 2010) [ 159.246059] iscsi: registered transport (cxgb4i) [ 159.262520] cnic: Broadcom NetXtreme II CNIC Driver cnic v2.5.8 (Jan 3, 2012) [ 159.265733] Broadcom NetXtreme II iSCSI Driver bnx2i v2.7.0.3 (Jun 15, 2011) [ 159.266376] iscsi: registered transport (bnx2i) [ 159.276785] iscsi: registered transport (be2iscsi) [ OK ] 10.0.0.30:3260,1 iqn.2012-06.world.srv:target00[root@www ~]# chkconfig iscsi on
[root@www ~]#
chkconfig iscsid on # make sure status after discovery [root@www ~]# iscsiadm -m node -o show # BEGIN RECORD 2.0-872.18.f17 node.name = iqn.2012-06.world.srv:target00 node.tpgt = 1 node.startup = automatic node.leading_login = No 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.nr_sessions = 1 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.2012-06.world.srv:target00, portal: 10.0.0.30,3260] (multiple) [ 446.380280] scsi2 : iSCSI Initiator over TCP/IP [ 447.387602] scsi 2:0:0:0: RAID IET Controller 0001 PQ: 0 ANSI: 5 [ 447.388599] scsi 2:0:0:0: Attached scsi generic sg0 type 12 [ 447.390206] scsi 2:0:0:1: Direct-Access IET VIRTUAL-DISK 0001 PQ: 0 ANSI: 5 [ 447.391188] sd 2:0:0:1: Attached scsi generic sg1 type 0 Login to [iface: default, target: iqn.2012-06.world.srv:target00, portal: 10.0.0.30,3260] successful. [root@www ~]# [ 447.393905] sd 2:0:0:1: [sda] 16777216 512-byte logical blocks: (8.58 GB/8.00 GiB) [ 447.395980] sd 2:0:0:1: [sda] Write Protect is off [ 447.397143] sd 2:0:0:1: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 447.415314] sda: unknown partition table [ 447.417907] sd 2:0:0:1: [sda] Attached SCSI disk # make sure current session [root@www ~]# iscsiadm -m session -o show tcp: [1] 10.0.0.30:3260,1 iqn.2012-06.world.srv:target00
# make sure partitions [root@www ~]# cat /proc/partitions major minor #blocks name
80 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 83886080 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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