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這篇文章主要介紹rhel6.3如何搭建iscsi-target服務(wù)器,文中介紹的非常詳細(xì),具有一定的參考價(jià)值,感興趣的小伙伴們一定要看完!
下面我們來看一下在RHEL6.3上如何搭建iscsi-target服務(wù)器和客戶端如何掛載.
一、服務(wù)端操作
服務(wù)端版本:
[root@racscsi home]# uname -r
2.6.32-279.el6.x86_64
[root@racscsi home]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.3 (Santiago)
安裝iscsi server軟件包。
用RPM的方式安裝。
[root@racscsi home]# rpm -ivh scsi-target-utils-1.0.24-2.el6.x86_64.rpm
warning: scsi-target-utils-1.0.24-2.el6.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY
Preparing... ########################################### [100%]
package scsi-target-utils-1.0.24-2.el6.x86_64 is already installed
用yum命令安裝(需自己配置YUM源)
[root@racscsi home]#yum -y install scsi-target-utils
啟動(dòng)服務(wù)并且添加到開機(jī)自啟動(dòng)。
[root@racscsi home]# /etc/init.d/tgtd start
Starting SCSI target daemon: [ OK ]
[root@racscsi home]# chkconfig tgtd on
使用fdisk命令創(chuàng)建幾個(gè)分區(qū),或者通過外部存儲(chǔ)映射共享分區(qū)。
現(xiàn)在這臺(tái)服務(wù)器已劃分好/dev/sdb、 /dev/sdc、 /dev/sdd、 /dev/sde、 /dev/sdf、 /dev/sdg 、/dev/sdh、/dev/sdi分區(qū),用于客戶端的掛載
下面我們需要編輯配置文件/etc/tgt/targets.conf,并設(shè)置下iSCSI Qualified Name (IQN).
[root@racscsi home]#vim /etc/tgt/ targets.conf
在文件末尾添加如下內(nèi)容
<target iqn.2008-09.com.example:asm> #iqn名字可任意
backing-store /dev/sdb
backing-store /dev/sdc
backing-store /dev/sdd
backing-store /dev/sde
backing-store /dev/sdf
backing-store /dev/sdg
backing-store /dev/sdh
backing-store /dev/sdi
initiator-address 192.168.10.0/24 #限定允許訪問的客戶端地址段或具體IP
write-cache off #是否開啟或關(guān)閉快取
</target>
重啟服務(wù),使修改后的配置生效。
[root@racscsi home]#/etc/init.d/tgtd restart
確定iscsi server是否成功。如果顯示如下說明配置iscsi server已經(jīng)成功。
[root@racscsi home]# tgt-admin --show
Target 1: iqn.2008-09.com.example:asm
System information:
Driver: iscsi
State: ready
I_T nexus information:
I_T nexus: 1
Initiator: iqn.1994-05.com.redhat:b363811441a
Connection: 0
IP Address: 192.168.10.212
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB, Block size: 1
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: IET 00010001
SCSI SN: beaf11
Size: 2147 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/sdb
Backing store flags:
。。。。。。。。。。。。 #中間內(nèi)容省略
LUN: 8
Type: disk
SCSI ID: IET 00010008
SCSI SN: beaf18
Size: 5369 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/sdi
Backing store flags:
Account information:
ACL information:
192.168.10.0/24
注意:關(guān)閉服務(wù)端的IPTABLES,以免客戶端無法正常訪問
二、客戶端掛載
客戶端需安裝的包iscsi-initiator-utils
[root@rac2 home]# rpm -ivh iscsi-initiator-utils-6.2.0.872-41.el6.x86_64.rpm
warning: iscsi-initiator-utils-6.2.0.872-41.el6.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY
Preparing... ########################################### [100%]
1:iscsi-initiator-utils ########################################### [100%]
用yum命令安裝(需自己配置YUM源)
[root@rac2 home]#yum -y install iscsi-initiator-utils
啟動(dòng)服務(wù)并且添加到開機(jī)啟動(dòng)。
[root@rac2 Desktop]# /etc/init.d/iscsid start
[root@rac2 Desktop]# chkconfig iscsid on
發(fā)現(xiàn)服務(wù)器端iscsi server的共享分區(qū)。
[root@rac2 Desktop]# iscsiadm --mode discovery --type sendtargets --portal 192.168.10.220
192.168.10.220:3260,1 iqn.2008-09.com.example:asm
已發(fā)現(xiàn)
登陸到iscsi server共享的分區(qū)。
[root@rac2 Desktop]# iscsiadm -m node -T iqn.2008-09.com.example:asm -p 192.168.10.220 -l
Logging in to [iface: default, target: iqn.2008-09.com.example:asm, portal: 192.168.10.220,3260] (multiple)
Login to [iface: default, target: iqn.2008-09.com.example:asm, portal: 192.168.10.220,3260] successful.
再使用fdisk -l命令查看分區(qū),發(fā)現(xiàn)共享出來的分區(qū)都已經(jīng)掛過來了。
[root@rac2 Desktop]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000586f0
Device Boot Start End Blocks Id System
/dev/sda1 * 1 39 307200 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 39 549 4096000 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3 549 2611 16567296 83 Linux
Disk /dev/sdb: 2147 MB, 2147483648 bytes
67 heads, 62 sectors/track, 1009 cylinders
Units = cylinders of 4154 * 512 = 2126848 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdc: 2147 MB, 2147483648 bytes
67 heads, 62 sectors/track, 1009 cylinders
Units = cylinders of 4154 * 512 = 2126848 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdd: 2147 MB, 2147483648 bytes
67 heads, 62 sectors/track, 1009 cylinders
Units = cylinders of 4154 * 512 = 2126848 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sde: 10.7 GB, 10737418240 bytes
64 heads, 32 sectors/track, 10240 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdf: 10.7 GB, 10737418240 bytes
64 heads, 32 sectors/track, 10240 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdg: 10.7 GB, 10737418240 bytes
64 heads, 32 sectors/track, 10240 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdh: 5368 MB, 5368709120 bytes
166 heads, 62 sectors/track, 1018 cylinders
Units = cylinders of 10292 * 512 = 5269504 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdi: 5368 MB, 5368709120 bytes
166 heads, 62 sectors/track, 1018 cylinders
Units = cylinders of 10292 * 512 = 5269504 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
最后你可以格式化分區(qū),掛載在本地相應(yīng)目錄。如果要實(shí)現(xiàn)開機(jī)自動(dòng)掛載,要在fstab文件添加記錄。
注意添加_netdev參數(shù),要不你在重啟iscsi server后,啟動(dòng)時(shí)會(huì)報(bào)錯(cuò)。
示例: /dev/sdb /crs ext4 default,_netdev 0 0
補(bǔ)充:
如果在服務(wù)端/etc/tgt/targets.conf文件配置了用戶名密碼,比如
<target iqn.2008-09.com.example:server.target3>
backing-store /dev/sdb
initiator-address 192.168.10.0/24
incoming grid 123@passwd
write-cacheoff
</target>
則在客戶端/etc/iscsi/iscsid.conf配置文件
需要添加相應(yīng)的賬號(hào)和密碼
node.session.auth.username = grid
node.session.auth.password = 123@passwd
discovery.sendtargets.auth.username = grid
discovery.sendtargets.auth.password = 123@passwd
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