004.iSCSI客户端配置示例-Linux

  1 [root@system2 ~]# yum -y install iscsi-initiator-utils

  1 [root@system2 ~]# vi /etc/iscsi/initiatorname.iscsi
  2 InitiatorName=iqn.2016-09.com.example:desktop0		#设置为服务端赋予权限的IQN

  1 [root@system2 ~]# systemctl enable iscsi
  2 [root@system2 ~]# systemctl start iscsi

  1 [root@system2 ~]# iscsiadm -m discovery -t sendtargets -p 172.24.8.11	#发现目标或者iscsiadm -m discovery -t st -p 172.24.8.11
  2 172.24.8.11:3260,1 iqn.2016-09.com.example:remotedisk1

  1 [root@system2 ~]# iscsiadm -m node -T iqn.2016-09.com.example:remotedisk1 -p 172.24.8.11 -l	#登陆目标或
  2 iscsiadm -m node --targetname iqn.2016-09.com.example:remotedisk1 -p 172.24.8.11 --login

  1 [root@system2 ~]# iscsiadm -m session -P 3		#查询信息
  2 iSCSI Transport Class version 2.0-870
  3 version 6.2.0.873-21
  4 Target: iqn.2016-09.com.example:remotedisk1 (non-flash)
  5         Current Portal: 172.24.8.11:3260,1
  6         Persistent Portal: 172.24.8.11:3260,1
  7           ……
  8                 Iface Initiatorname: iqn.2016-09.com.example:desktop0
  9                 Iface IPaddress: 172.24.8.12
 10        ……
 11                 Attached SCSI devices:
 12                 ************************
 13                 Host Number: 33 State: running
 14                 scsi33 Channel 00 Id 0 Lun: 0
 15                         Attached scsi disk sdb          State: running
 16                 scsi33 Channel 00 Id 0 Lun: 1
 17                         Attached scsi disk sdc          State: running
 18                 scsi33 Channel 00 Id 0 Lun: 2
 19                         Attached scsi disk sdd          State: running
 20 [root@system2 ~]# fdisk -l				#发现的iSCSI服务器三个共享
 21 ……
 22 Disk /dev/sdb: 2147 MB, 2147483648 bytes, 4194304 sectors
 23 ……
 24 Disk /dev/sdc: 3221 MB, 3221225472 bytes, 6291456 sectors
 25 ……
 26 Disk /dev/sdd: 1073 MB, 1073741824 bytes, 2097152 sectors
 27 ……

  1 [root@system2 ~]# mkfs.ext4 /dev/sdb			#格式化相关iSCSI磁盘
  2 [root@system2 ~]# mkdir -p /iscsdisk/sdb01		#创建用于挂载sdd磁盘的挂载点
  3 [root@system2 ~]# mkdir -p /iscsdisk/lv01		#创建用于挂载LVM分区的挂载点
  4 [root@system2 ~]# mount /dev/sdb /iscsdisk/sdb01/	#可直接挂载
  5 [root@system2 ~]# pvcreate /dev/sd{c,d}
  6 ……
  7 [root@system2 ~]# vgcreate iscs-vg01 -s 16M /dev/sd{c,d}
  8   Volume group "iscs-vg01" successfully created
  9 [root@system2 ~]# lvcreate -n iscs-lv01 -L +4G iscs-vg01
 10   Logical volume "iscs-lv01" created
 11 [root@system2 ~]# mkfs.xfs /dev/iscs-vg01/iscs-lv01 	#以上均为LVM创建过程
 12 ……
 13 [root@system2 ~]# mount /dev/iscs-vg01/iscs-lv01 /iscsdisk/lv01/	#挂载
 14 [root@system2 ~]# df -Th
 15 ……
 16 /dev/mapper/iscs--vg01-iscs--lv01 xfs       4.0G   33M  4.0G   1% /iscsdisk/lv01
 17 /dev/sdb                          ext4      976M  2.6M  907M   1% /iscsdisk/sdb01

  1 [root@system2 ~]# blkid					#获取UUID
  2 /dev/sdb: UUID="2kChJ9-SzFy-eiYP-UqNR-FOJn-bbSt-Uu7WMm" TYPE="LVM2_member"
  3 /dev/sda1: UUID="182dc058-fb2e-45ec-8285-38f150033822" TYPE="xfs"
  4 /dev/sda2: UUID="ded4e9e7-b20f-405f-b88b-99e26dd67bd5" TYPE="swap"
  5 /dev/sdc: UUID="Cuxf8e-gd23-tWi3-GGHf-LRmq-t2X2-MoWguv" TYPE="LVM2_member"
  6 /dev/mapper/iscs--vg01-iscs--lv01: UUID="e0dd92fd-12fd-45a7-aaa4-f58680fdee63" TYPE="xfs"
  7 /dev/sdd: UUID="6fc59bef-b502-4b54-81c1-5b3ecf0da0e7" TYPE="ext4"
  8 [root@system2 ~]# vi /etc/fstab				#自动挂载
  9 ……
 10 UUID=e0dd92fd-12fd-45a7-aaa4-f58680fdee63 /iscsdisk/lv01	xfs	defaults	0 0
 11 UUID=6fc59bef-b502-4b54-81c1-5b3ecf0da0e7 /iscsdisk/sdd01	ext4	defaults	0 0