服务器评测
一。配置ISCSI Target 服务端
1.安装ISCSI Target 软件包
CentOS ,RHEL5
[root@server1 ~]# yum install iscsi-initiator-utils –y
[root@server1 ~]# yum install scsi-target-utils -y
2.新增加两个分区/dev/sdb1,/dev/sdb2 使用ISCSI 共享。
[root@server1 ~]# fdisk -l
Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 1044 8281507+ 8e Linux LVM
Disk /dev/sdb: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 512 4112608+ 83 Linux
/dev/sdb2 513 1044 4273290 83 Linux
[root@server1 ~]#
3. 启动服务端tgtd
[root@server1 ~]# chkconfig tgtd on
[root@server1 ~]# service tgtd start
Starting SCSI target daemon: [确定]
[root@server1 ~]#
4.使用tgtadm 定义iscsi target 的qualified
root@server1 ~]# tgtadm –lld iscsi –op new –mode target –tid 1 -T iqn.2009-12.com.example.com.disk1
[root@server1 ~]# tgtadm –lld iscsi –op new –mode target –tid 2 -T iqn.2009-12.com.example.com.disk2
5.使用tgtadm 往已创建的目标里增加分区
[root@server1 ~]# tgtadm –lld iscsi –op new –mode logicalunit –tid 1 –lun 1 -b /dev/sdb1
[root@server1 ~]# tgtadm –lld iscsi –op new –mode logicalunit –tid 2 –lun 1 -b /dev/sdb2
6.使用tgtadm 允许客户端访问
[root@server1 ~]# tgtadm –lld iscsi –op bind –mode target –tid 1 -I ALL
[root@server1 ~]# tgtadm –lld iscsi –op bind –mode target –tid 2 -I ALL
7.使用tgtadm 验证目标逻辑卷
[root@server1 ~]# tgtadm –lld iscsi –op show –mode target | grep Target
Target 1: iqn.2009-12.com.example.com.disk1
Target 2: iqn.2009-12.com.example.com.disk2
[root@server1 ~]#
8.为了重启后有效，将上述命令加到/etc/rc.d/rc.local文件。
二．配置ISCSI 客户端
1. [root@station1 ~]# chkconfig iscsi on
[root@station1 ~]# service iscsi start
iscsid (pid 1705 1704) 正在运行…
设置 iSCSI 目标：iscsiadm: No records found!
[确定]
[root@station1 ~]#
2.发现ISCSI 服务端资源
[root@station1 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.0.254
192.168.0.254:3260,1 iqn.2009-12.com.example.com.disk1
192.168.0.254:3260,1 iqn.2009-12.com.example.com.disk2
[root@station1 ~]#
3.使用iscsiadm 登录target
[root@station1 ~]# iscsiadm -m node -T iqn.2009-12.com.example.com.disk1 -p 192.168.0.254 -l
Logging in to [iface: default, target: iqn.2009-12.com.example.com.disk1, portal: 192.168.0.254,3260]
Login to [iface: default, target: iqn.2009-12.com.example.com.disk1, portal: 192.168.0.254,3260]: successful
[root@station1 ~]# iscsiadm -m node -T iqn.2009-12.com.example.com.disk2 -p 192.168.0.254 -l
Logging in to [iface: default, target: iqn.2009-12.com.example.com.disk2, portal: 192.168.0.254,3260]
Login to [iface: default, target: iqn.2009-12.com.example.com.disk2, portal: 192.168.0.254,3260]: successful
[root@station1 ~]#
4.查看当前磁盘分区，可以看到新加入的两个分区/dev/sdb /dev/sdc
[root@station1 ~]# fdisk -l
Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 1044 8281507+ 8e Linux LVM
Disk /dev/sdb: 4211 MB, 4211311104 bytes
130 heads, 62 sectors/track, 1020 cylinders
Units = cylinders of 8060 * 512 = 4126720 bytes
Disk /dev/sdb doesn’t contain a valid partition table
Disk /dev/sdc: 4375 MB, 4375848960 bytes
135 heads, 62 sectors/track, 1021 cylinders
Units = cylinders of 8370 * 512 = 4285440 bytes
Disk /dev/sdc doesn’t contain a valid partition table
[root@station1 ~]#
