用DD实施EMC存储迁移实例步骤

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用DD实施EMC存储迁移实例步骤

EMC存储迁移实例实施步骤
环境介绍
数据库主机 HP RP7440*2 (MC)
目前的现状：
db01(MC双机主机)
db02(MC双机备机)
现网存储EMC CX500，
迁移目标存储EMC CX3-40F。
涉及到迁移的VG为vg_ora1-vg_ora3
环境准备
数据迁移前先准备好db01和db02的环境，调整光纤交换机的zone的划分，使db01和db02可以同时访问EMC CX500 和 EMC CX3-40F，如下：
db01#[/]ioscan -fnCdisk|more
可以同时看到 EMC CX500和 EMC CX3-40F上的LUN
现在备机db02上创建新的卷组vg_Nora1~vg_Nora3和lv
实施步骤
1.在db01和db02上对vg_ora1-vg_ora3的vg信息进行备份
vgexport -p -s -m /tmp/vg_exp_bak/vg_ora1.map /dev/vg_ora1
vgexport -p -s -m /tmp/vg_exp_bak/vg_ora2.map /dev/vg_ora2
vgexport -p -s -m /tmp/vg_exp_bak/vg_ora3.map /dev/vg_ora3
2.停业务和双机
cmhaltcl -f -v
3.在db02上激活vg_ora1-vg_ora3
vgchange -c n /dev/vg_ora1
vgchange -a y /dev/vg_ora1
vgchange -c n /dev/vg_ora2
vgchange -a y /dev/vg_ora2
vgchange -c n /dev/vg_ora3
vgchange -a y /dev/vg_ora3
4.执行dd脚本
dd if=/dev/vg_ora1/rctrl_128m_01 of=/dev/vg_Nora1/rctrl_128m_01 bs=4096k
dd if=/dev/vg_ora1/rdata_1g_001 of=/dev/vg_Nora1/rdata_1g_001 bs=4096k
..................
5.在db02上 备份VG vg_Nora1-vg_Nora3信息
vgexport -p -s -m /tmp/vg_exp_bak/vg_Nora1.map /dev/vg_Nora1
vgexport -p -s -m /tmp/vg_exp_bak/vg_Nora2.map /dev/vg_Nora2
vgexport -p -s -m /tmp/vg_exp_bak/vg_Nora3.map /dev/vg_Nora3
6.在db02上删除VG vg_ora1-vg_ora3和vg_Nora1-vg_Nora3
vgexport /dev/vg_ora1
vgexport /dev/vg_ora2
vgexport /dev/vg_ora3
vgexport /dev/vg_Nora1
vgexport /dev/vg_Nora2
vgexport /dev/vg_Nora3
7.建立vg_ora1-ora3目录
mkdir /dev/vg_ora1
mkdir /dev/vg_ora2
mkdir /dev/vg_ora3
mknod /dev/vg_ora1/group c 64 0x100000
mknod /dev/vg_ora2/group c 64 0x110000
mknod /dev/vg_ora3/group c 64 0x120000
8.把新的vg_Nora1.map-vg_Nora3.map导入到vg_ora1-vg_ora3 VG
vgimport -s -m /tmp/vg_exp_bak_new/vg_Nora1.map /dev/vg_ora1
vgimport -s -m /tmp/vg_exp_bak_new/vg_Nora2.map /dev/vg_ora2
vgimport -s -m /tmp/vg_exp_bak_new/vg_Nora3.map /dev/vg_ora3
9.更改属主
chown -R oracle:dba /dev/vg_ora1
chown -R oracle:dba /dev/vg_ora2
chown -R oracle:dba /dev/vg_ora3
10.激活vg
vgchange -c n /dev/vg_ora1
vgchange -c n /dev/vg_ora2
vgchange -c n /dev/vg_ora3
vgchange -a y /dev/vg_ora1
vgchange -a y /dev/vg_ora2
vgchange -a y /dev/vg_ora3
11.起oracle数据库，如果运行正常表示迁移存储已经正常。后面工作就是进行双机配置
12.MC双机配置
vgchange -a n /dev/vg_ora1
vgchange -a n /dev/vg_ora2
vgchange -a n /dev/vg_ora3
rcp /tmp/vg_exp_bak_new/vg_Nora1.map db01:/tmp/vg_exp_bak_new/
rcp /tmp/vg_exp_bak_new/vg_Nora2.map db01:/tmp/vg_exp_bak_new/
rcp /tmp/vg_exp_bak_new/vg_Nora3.map db01:/tmp/vg_exp_bak_new/
1）在db01上执行
vgexport /dev/vg_ora1
vgexport /dev/vg_ora2
vgexport /dev/vg_ora3
mkdir /dev/vg_ora1
mkdir /dev/vg_ora2
mkdir /dev/vg_ora3
mknod /dev/vg_ora1/group c 64 0x100000
mknod /dev/vg_ora2/group c 64 0x110000
mknod /dev/vg_ora3/group c 64 0x120000
导入vg信息文件
vgimport -s -m /tmp/vg_exp_bak_new/vg_Nora1.map /dev/vg_ora1
vgimport -s -m /tmp/vg_exp_bak_new/vg_Nora2.map /dev/vg_ora2
vgimport -s -m /tmp/vg_exp_bak_new/vg_Nora3.map /dev/vg_ora3
2）vi /etc/cmcluster/cluster.ascii
只需更改锁盘的硬件路径
3）cmcheckconf -v -C /etc/cmcluster/cluster.ascii -P /etc/cmcluster/pkg1/pkg1.conf
cmapplyconf -v -C /etc/cmcluster/cluster.ascii -P /etc/cmcluster/pkg1/pkg1.conf
4）cmruncl -v
5）cmviewcl -v
运行正常，所有的数据库数据由CX500迁移至CX3-40F。


本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/78315/showart_1164287.html

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好东西，支持，谢谢楼主。顶！