1、安装ISCSI Initiator软件

每个发行版本的Linux系统在安装光盘中都附带有iscsi-initiator-utils-6.2.0.872-34.el6.i686安装包

直接执行安装即可rpm -ivh iscsi-initiator-utils-6.2.0.872-34.el6.i686.rpm

[root@lchen ~]# rpm -qa iscsi* #######################查询是否安装了iscsi initiator软件包

[root@lchen ~]# mount /dev/cdrom /mnt/ #######################挂载安装光盘到mnt文件夹下面

mount: block device /dev/cdrom is write-protected, mounting read-only

[root@lchen ~]# rpm -ivh /mnt/CentOS/iscsi-initiator-utils-6.2.0.871-0.10.el5.i3 86.rpm #######################安装包软件包

warning: /mnt/CentOS/iscsi-initiator-utils-6.2.0.871-0.10.el5.i386.rpm: Header V 3 DSA signature: NOKEY, key ID e8562897

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

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

[root@lchen ~]# rpm -qa iscsi*

iscsi-initiator-utils-6.2.0.871-0.10.el5 #######################查询已经安装此包

[root@lchen ~]#

2、挂载存储空间步骤

1）发现空间使用命令iscsiadm，后面portal的ip地址是存储的ip地址。

没有发现空间的显示：

[root@lchen ~]# iscsiadm --mode discovery --type sendtargets --portal 192.168.57.220

iscsiadm: can not connect to iSCSI daemon (111)!

iscsiadm: Cannot perform discovery. Initiatorname required.

iscsiadm: Discovery process to 192.168.57.220:3260 failed to create a discovery session.

正常发现空间的显示：输出一行代表一个新的空间

[root@lchen ~]# iscsiadm --mode discovery --type sendtargets --portal 192.168.57.220

192.168.57.220:3260,1 iqn.2013-08:dss.target1

[root@lchen ~]#

2）挂载空间

[root@lchen ~]# iscsiadm --mode node --targetname iqn.2013-08:dss.target1 --portal 192.168.57.220 --login

Logging in to [iface: default, target: iqn.2013-08:dss.target1, portal: 192.168.57.220,3260]

[root@lchen ~]#

3）查看新磁盘（例子中为新增加的5G空间大小磁盘）

[root@lchen ~]# fdisk -l

Disk /dev/sda: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sda1 * 1 38 305203+ 83 Linux

/dev/sda2 39 2349 18563107+ 83 Linux

/dev/sda3 2350 2610 2096482+ 82 Linux swap / Solaris

Disk /dev/sdb: 5100 MB, 5100273664 bytes

157 heads, 62 sectors/track, 1023 cylinders

Units = cylinders of 9734 * 512 = 4983808 bytes

Disk /dev/sdb doesn't contain a valid partition table

[root@lchen ~]#

4）分区挂载，读写文件

[root@lchen ~]# fdisk /dev/sdb ######################对新磁盘sdb进行格式化操作

Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel. Changes will remain in memory only,

until you decide to write them. After that, of course, the previous

content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): n ######################n代表新建一个分区

Command action

e extended

p primary partition (1-4)

p ######################选择p代表新建一个主分区，选择1第一个主分区

Partition number (1-4): 1

First cylinder (1-1023, default 1):######################选择开始的扇区，默认在第一个扇区

Using default value 1 ######################选择默认第一个扇区

Last cylinder or +size or +sizeM or +sizeK (1-1023, default 1023):######################选择最后一个扇区，可以使用+多少M，+多少G来表示

Using default value 1023 ######################选择到最后的扇区，使用整块硬盘空间

Command (m for help): t ######################设置分区的文件系统格式

Selected partition 1

Hex code (type L to list codes): l ######################列出所有的文件系统格式

0 Empty 1e Hidden W95 FAT1 80 Old Minix bf Solaris

1 FAT12 24 NEC DOS 81 Minix / old Lin c1 DRDOS/sec (FAT-

2 XENIX root 39 Plan 9 82 Linux swap / So c4 DRDOS/sec (FAT-

3 XENIX usr 3c PartitionMagic 83 Linux c6 DRDOS/sec (FAT-

4 FAT16 <32M 40 Venix 80286 84 OS/2 hidden C: c7 Syrinx

5 Extended 41 PPC PReP Boot 85 Linux extended da Non-FS data

6 FAT16 42 SFS 86 NTFS volume set db CP/M / CTOS / .

7 HPFS/NTFS 4d QNX4.x 87 NTFS volume set de Dell Utility

8 AIX 4e QNX4.x 2nd part 88 Linux plaintext df BootIt

9 AIX bootable 4f QNX4.x 3rd part 8e Linux LVM e1 DOS access

a OS/2 Boot Manag 50 OnTrack DM 93 Amoeba e3 DOS R/O

b W95 FAT32 51 OnTrack DM6 Aux 94 Amoeba BBT e4 SpeedStor

c W95 FAT32 (LBA) 52 CP/M 9f BSD/OS eb BeOS fs

e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi ee EFI GPT

f W95 Ext'd (LBA) 54 OnTrackDM6 a5 FreeBSD ef EFI (FAT-12/16/

10 OPUS 55 EZ-Drive a6 OpenBSD f0 Linux/PA-RISC b

11 Hidden FAT12 56 Golden Bow a7 NeXTSTEP f1 SpeedStor

12 Compaq diagnost 5c Priam Edisk a8 Darwin UFS f4 SpeedStor

14 Hidden FAT16 <3 61 SpeedStor a9 NetBSD f2 DOS secondary

16 Hidden FAT16 63 GNU HURD or Sys ab Darwin boot fb VMware VMFS

17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE

18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto

1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep

1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT

Hex code (type L to list codes): 83 ###################### 83代表是linux

Command (m for help): w ######################保存配置

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@lchen ~]# mkfs.ext3 /dev/sdb

sdb sdb1

[root@lchen ~]# mkfs.ext3 /dev/sdb1 ######################格式化第一个分区

mke2fs 1.39 (29-May-2006)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

622592 inodes, 1244727 blocks

62236 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=1275068416

38 block groups

32768 blocks per group, 32768 fragments per group

16384 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 21 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

[root@lchen ~]# mkdir /disk1 ######################创建一个新的文件夹disk1

[root@lchen ~]# mount /dev/sdb1 /disk1/ ######################把第一个分区挂载至disk1文件夹下

[root@lchen ~]# df -h ######################查看分区情况

Filesystem Size Used Avail Use% Mounted on

/dev/sda2 18G 2.7G 14G 17% /

/dev/sda1 289M 16M 258M 6% /boot

tmpfs 506M 0 506M 0% /dev/shm

/dev/hdc 3.8G 3.8G 0 100% /media/CentOS_5.4_Final

/dev/hdc 3.8G 3.8G 0 100% /mnt

/dev/sdb1 4.7G 138M 4.4G 4% /disk1

[root@lchen ~]#

5）移除挂载

[root@lchen ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda2 18G 2.7G 14G 17% /

/dev/sda1 289M 16M 258M 6% /boot

tmpfs 506M 0 506M 0% /dev/shm

/dev/hdc 3.8G 3.8G 0 100% /media/CentOS_5.4_Final

/dev/hdc 3.8G 3.8G 0 100% /mnt

/dev/sdb1 4.7G 138M 4.4G 4% /disk1

[root@lchen ~]#

[root@lchen ~]# umount /dev/sdb1 ######################移除挂载点，看到disk1不见了。

[root@lchen ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda2 18G 2.7G 14G 17% /

/dev/sda1 289M 16M 258M 6% /boot

tmpfs 506M 0 506M 0% /dev/shm

/dev/hdc 3.8G 3.8G 0 100% /media/CentOS_5.4_Final

/dev/hdc 3.8G 3.8G 0 100% /mnt

[root@lchen ~]# iscsiadm --mode node --targetname iqn.2013-08:dss.target1 --portal 192.168.57.220:3260 --logout ##################### 移除成功

Logging out of session [sid: 2, target: iqn.2013-08:dss.target1, portal: 192.168.57.220,3260]

Logout of [sid: 2, target: iqn.2013-08:dss.target1, portal: 192.168.57.220,3260]: successful

[root@lchen ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda2 18G 2.7G 14G 17% /

/dev/sda1 289M 16M 258M 6% /boot

tmpfs 506M 0 506M 0% /dev/shm

/dev/hdc 3.8G 3.8G 0 100% /media/CentOS_5.4_Final

/dev/hdc 3.8G 3.8G 0 100% /mnt

[root@lchen ~]# fdisk -l

Disk /dev/sda: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sda1 * 1 38 305203+ 83 Linux

/dev/sda2 39 2349 18563107+ 83 Linux

/dev/sda3 2350 2610 2096482+ 82 Linux swap / Solaris

[root@lchen ~]#

6）验证重启服务自动挂载上空间

[root@lchen ~]# service iscsi restart

Stopping iSCSI daemon:

iscsid dead but pid file exists [ OK ]

Turning off network shutdown. Starting iSCSI daemon: [ OK ]

[ OK ]

Setting up iSCSI targets: Logging in to [iface: default, target: iqn.2013-08:dss.target1, portal: 192.168.57.220,3260]

[ OK ]

[root@lchen ~]#