How To:配置Linux iSCSI客户端

1、安装客户端

[root@node01 Packages]# rpm -Uvh iscsi-initiator-utils-6.2.0.873-2.el6.x86_64.rpm

warning: iscsi-initiator-utils-6.2.0.873-2.el6.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

Preparing...                ########################################### [100%]

   1:iscsi-initiator-utils  ########################################### [100%]

[root@node01 Packages]# rpm -q iscsi-initiator-utils

iscsi-initiator-utils-6.2.0.873-2.el6.x86_64

　　

2、设置服务自启动

[root@node01 Packages]# chkconfig --list | grep iscsi

iscsi           0:off   1:off   2:off   3:on    4:on    5:on    6:off

iscsid          0:off   1:off   2:off   3:on    4:on    5:on    6:off

[root@node01 ~]# chkconfig iscsid on

[root@node01 ~]# chkconfig iscsi on

[root@node01 ~]# chkconfig --list | grep iscsi

iscsi           0:off   1:off   2:on    3:on    4:on    5:on    6:off

iscsid          0:off   1:off   2:on    3:on    4:on    5:on    6:off

　　

【此处Linux的版本为RHEL 6.4，iSCSI的操作已于以往不同】

3、发现iSCSI Targets

[root@node01 ~]# iscsiadm -m discovery -t sendtargets -p 172.1.2.200:3260

[  OK  ] iscsid: [  OK  ]

172.1.2.200:3260,1 iqn.syksky.com.openfiler:tsn.7b99cc2f92ee

　　

4、启动服务

[root@node01 ~]# service iscsi start

Starting iscsi: [  OK  ]

5、查看会话状态

【此处新版本，原先-i的参数已被替换，-P是print level，取值0-3，具体可以查看帮助】

[root@node01 ~]# iscsiadm -m session -P 

iSCSI Transport Class version 2.0-

version 6.2.-873.2.el6

Target: iqn.syksky.com.openfiler:tsn.7b99cc2f92ee

        Current Portal: 172.1.2.200:,

        Persistent Portal: 172.1.2.200:,

                **********

                Interface:

                **********

                Iface Name: default

                Iface Transport: tcp

                Iface Initiatorname: iqn.-.com.redhat:89ccf9f3abc

                Iface IPaddress: 172.1.2.101

                Iface HWaddress: <empty>

                Iface Netdev: <empty>

                SID: 

                iSCSI Connection State: LOGGED IN

                iSCSI Session State: LOGGED_IN

                Internal iscsid Session State: NO CHANGE

                *********

                Timeouts:

                *********

                Recovery Timeout: 

                Target Reset Timeout: 

                LUN Reset Timeout: 

                Abort Timeout: 

                *****

                CHAP:

                *****

                username: <empty>

                password: ********

                username_in: <empty>

                password_in: ********

                ************************

                Negotiated iSCSI params:

                ************************

                HeaderDigest: None

                DataDigest: None

                MaxRecvDataSegmentLength: 

                MaxXmitDataSegmentLength: 

                FirstBurstLength: 

                MaxBurstLength: 

                ImmediateData: No

                InitialR2T: Yes

                MaxOutstandingR2T: 

                ************************

                Attached SCSI devices:

                ************************

                Host Number:   State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdb          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdc          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdl          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdm          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdn          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdo          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdp          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdq          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdd          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sde          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdf          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdg          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdh          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdi          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdj          State: running

                scsi4 Channel  Id  Lun: 

                        Attached scsi disk sdk          State: running

6、发现的新磁盘

[root@node01 ~]# fdisk -l | grep "Disk /dev"

Disk /dev/sda: 42.9 GB,  bytes

Disk /dev/mapper/vg_node01-lv_root: 38.2 GB,  bytes

Disk /dev/mapper/vg_node01-lv_swap:  MB,  bytes

Disk /dev/sdb:  MB,  bytes

Disk /dev/sdc:  MB,  bytes

Disk /dev/sdf:  MB,  bytes

Disk /dev/sde:  MB,  bytes

Disk /dev/sdd:  MB,  bytes

Disk /dev/sdg:  MB,  bytes

Disk /dev/sdh:  MB,  bytes

Disk /dev/sdj:  MB,  bytes

Disk /dev/sdi:  MB,  bytes

Disk /dev/sdl:  MB,  bytes

Disk /dev/sdk:  MB,  bytes

Disk /dev/sdn:  MB,  bytes

Disk /dev/sdm:  MB,  bytes

Disk /dev/sdo:  MB,  bytes

Disk /dev/sdp:  MB,  bytes

Disk /dev/sdq:  MB,  bytes