用DD實施EMC存儲遷移實例步驟

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用DD實施EMC存儲遷移實例步驟

EMC存儲遷移實例實施步驟
環(huán)境介紹
數據庫主機 HP RP7440*2 (MC)
目前的現(xiàn)狀：
db01(MC雙機主機)
db02(MC雙機備機)
現(xiàn)網存儲EMC CX500，
遷移目標存儲EMC CX3-40F。
涉及到遷移的VG為vg_ora1-vg_ora3
環(huán)境準備
數據遷移前先準備好db01和db02的環(huán)境，調整光纖交換機的zone的劃分，使db01和db02可以同時訪問EMC CX500 和 EMC CX3-40F，如下：
db01#[/]ioscan -fnCdisk|more
可以同時看到 EMC CX500和 EMC CX3-40F上的LUN
現(xiàn)在備機db02上創(chuàng)建新的卷組vg_Nora1~vg_Nora3和lv
實施步驟
1.在db01和db02上對vg_ora1-vg_ora3的vg信息進行備份
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.停業(yè)務和雙機
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.執(zhí)行dd腳本
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 備份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上刪除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目錄
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導入到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.更改屬主
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數據庫，如果運行正常表示遷移存儲已經正常。后面工作就是進行雙機配置
12.MC雙機配置
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上執(zhí)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
導入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
只需更改鎖盤的硬件路徑
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
運行正常，所有的數據庫數據由CX500遷移至CX3-40F。


本文來自ChinaUnix博客，如果查看原文請點：http://blog.chinaunix.net/u2/78315/showart_1164287.html

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