1.环境介绍
ha管理端:luci:192.168.122.1
ha节点ricci: 192.168.122.34 192.168.122.33
从desk82上使用iscsi方式共享磁盘共ha节点建立GFS文件系统
2.iscsi磁盘共享
服务器端:
采用LVM方式共享,以便后期的有可能的扩展;
[root@desk82~]# fdisk -cu /dev/sda
Command(m for help): n
Commandaction
e extended
p primary partition (1-4)
p
Selectedpartition 4
Lastsector, +sectors or +size{K,M,G} (11495424-16777215, default16777215): +2G
Command(m for help): T
Partitionnumber (1-4): 4
Hexcode (type L to list codes): 8e
Changedsystem type of partition 4 to 8e (Linux LVM)
Command(m for help): wq
[root@desk82~]# pvcreate /dev/sda5
[root@desk82~]# vgcreate ha /dev/sda5
[root@desk82~]# lvcreate -L 1900M -n hadamo ha
[root@desk82~]# yum -y install scsi-target-utils.x86_64
[root@desk82~]# vim /etc/tgt/targets.conf
<targetiqn.2013-09.desk82.example:server.target1>
backing-store /dev/ha/hadamo
initiator-address 192.168.122.33
initiator-address 192.168.122.34
</target>
[root@desk82~]# /etc/init.d/tgtd start
[root@desk82~]# tgtadm --lld iscsi --op show --mode target #检查共享是否成功
Target1: iqn.2013-09.desk82.example:server.target1
….........
Backing store path: /dev/ha/hadamo
Backing store flags:
Account information:
ACL information:
192.168.122.33
192.168.122.34
ha端导入硬盘:
分别在两个节点上进行:
[root@desk34~]# yum -y install iscsi-initiator-utils.x86_64
[root@desk34~]# iscsiadm -m discovery -t st -p 192.168.122.82
Startingiscsid: [ OK ]
192.168.122.82:3260,1iqn.2013-09.desk82.example:server.target1
[root@desk34~]# iscsiadm -m node -l iqn.2013-09.desk82.example:server.target1
[root@desk34~]# fdisk -l
…...........................
Disk/dev/sda: 1992 MB, 1992294400 bytes
62heads, 62 sectors/track, 1012 cylinders
Units =cylinders of 3844 * 512 = 1968128 bytes
…..............................
desk33同样操作
3。GFS文件系统的创建与配置
以下操作最好是在一个节点上进行:
[root@desk34~]# fdisk -cu /dev/sda
Device Boot Start End Blocks Id System
/dev/sda1 2048 3891199 1944576 83 Linux
[root@desk34~]# pvcreate /dev/sda1
[root@desk34~]# vgcreate -c y havg /dev/sda1 #-c y 表示让vg支持cluster
[root@desk34~]# vgdisplay
Clustered yes
[root@desk34~]# lvmconf --enable-cluster
[root@desk34~]# /etc/init.d/clvmd restart
#激活lvm对与cluster的支持
#在创建vg后在另一个节点会同步vg
[root@desk34~]# lvcreate -L 1000M -n hadamo havg
如果出现如下问题:
Errorlocking on node 192.168.122.33: Volume group for uuid not found:vdfcn1i0cjjXRtw3ODjo54yopeUNtqAZZsy0Eh03PbVH9s5gFc98xNSqDLj0YFo4
Failed to activate new LV.
表示另一个节点上没有同步,可以在另一个节点上:
[root@desk33~]# iscsiadm --mode node --targetnameiqn.2013-09.desk82.example:server.target1 --portal192.168.122.82:3260 –logout
[root@desk33~]# iscsiadm -m node -l iqn.2013-09.desk82.example:server.target1
重新导入磁盘,确保磁��同步,重新创建
创建完成后:
[root@desk34~]# lvs
LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
hadamo havg -wi-a--- 1000.00m
[root@desk33~]# lvs
LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
hadamo havg -wi-a--- 1000.00m
创建GFS文件系统:
mkfs.gfs2-p lock_dlm -t wangzi_1:gfs2 -j 3 /dev/havg/hadamo (格式化为gfs2)
-p定义为 DLM锁方式,如果不加此参数,当在两个系统中同时挂载此分区时就会像EXT3 格式一
样,两个系统的信息不能同步
-twangzi_1 DLM 锁所在的表名字,就是你的集群的名字gfs 分区的卷标
-j GFS 分区中最多支持多少个节点同时挂载,这个可以在使用中动态调整,通常设定值为节点数+1
wangzi_1:gfs2 ##wangzi_1为集群名,gfs2为一个标志,任意
[root@desk34cluster]# mkfs.gfs2 -p lock_dlm -t wangzi_1:gfs2 -j 3/dev/havg/hadamo
Thiswill destroy any data on /dev/havg/hadamo.
Itappears to contain: symbolic link to `../dm-2'
Areyou sure you want to proceed? [y/n] y
Device: /dev/havg/hadamo
Blocksize: 4096
DeviceSize 0.98 GB (256000 blocks)
FilesystemSize: 0.98 GB (255997 blocks)
Journals: 3
ResourceGroups: 4
LockingProtocol: "lock_dlm"
LockTable: "wangzi_1:gfs2"
UUID: c62e7ef7-0179-8f8c-d6db-d15278ce4fc8
相关阅读:
基于RHCS+iSCSI+CLVM实现Web服务的共享存储集群架构 http://www.linuxidc.com/Linux/2013-05/84888.htm
Linux环境iSCSI存储及多路径功能配置 http://www.linuxidc.com/Linux/2013-05/84635.htm
构建基于IP SAN的iSCSI存储系统 http://www.linuxidc.com/Linux/2013-05/84570.htm
iSCSI连接不上解决 http://www.linuxidc.com/Linux/2013-01/78462.htm
Citrix XenServer中安装CentOS 6.0并配置iSCSI服务 http://www.linuxidc.com/Linux/2013-01/78461.htm
CentOS 5.3 使用iSCSI挂载存储磁盘柜 http://www.linuxidc.com/Linux/2011-01/31529.htm