环境：OEL 5.7 + Oracle 10.2.0.5 RAC

需求：更换存储，OCR、Voting disk同时需要更换到新存储。

• 1.替换OCR
• 2.替换voting disk

1.替换OCR

替换OCR（Oracle Cluster Registry）首先需要关闭RAC所有节点的crs，然后导出当前的ocr配置文件，手工修改ocr.loc文件后，导入ocr配置文件，可选择性创建ocrmirror。
本次实验演示就是将原来的/dev/raw/raw1替换为/dev/raw/raw14，并创建ocrmirror为/dev/raw/raw15.

--replace ocr

--两个节点关闭crs

/s01/oracle/product/10.2.0/crs_1/bin/crsctl stop crs

--ocrcheck

/s01/oracle/product/10.2.0/crs_1/bin/ocrcheck

--导出ocr的配置

/s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -export /tmp/ocrfile.dmp

--查看文件大小

ls -lrt /tmp/ocrfile.dmp

--两个节点修改ocr为新的/dev/raw/raw14

cat /etc/oracle/ocr.loc

--导入ocr配置文件

/s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -import /tmp/ocrfile.dmp

/s01/oracle/product/10.2.0/crs_1/bin/ocrcheck

--增加ocrmirror

/s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -replace ocrmirror /dev/raw/raw15

/s01/oracle/product/10.2.0/crs_1/bin/ocrcheck

--最后查看ocr.loc文件

cat /etc/oracle/ocr.loc

实际测试替换OCR的关键操作：

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl stop crs

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -export /tmp/ocrfile.dmp

[root@rac1-server rules.d]# vi /etc/oracle/ocr.loc

ocrconfig_loc=/dev/raw/raw14

local_only=FALSE

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -replace ocrmirror /dev/raw/raw15

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/ocrcheck

Status of Oracle Cluster Registry is as follows :

         Version                  :          2

         Total space (kbytes)     :      96144

         Used space (kbytes)      :       4652

         Available space (kbytes) :      91492

         ID                       : 1953645605

         Device/File Name         : /dev/raw/raw14

                                    Device/File integrity check succeeded

         Device/File Name         : /dev/raw/raw15

                                    Device/File integrity check succeeded

         Cluster registry integrity check succeeded

[root@rac1-server ~]#  cat /etc/oracle/ocr.loc

#Device/file  getting replaced by device /dev/raw/raw15

ocrconfig_loc=/dev/raw/raw14

ocrmirrorconfig_loc=/dev/raw/raw15

local_only=false

[root@rac1-server ~]#

2.替换voting disk

替换voting disk比较简单，只需要把新的voting disk加进来，然后把旧的删除即可。
本次实验演示就是新加/dev/raw/raw11,/dev/raw/raw12,/dev/raw/raw13,然后将原来的/dev/raw/raw2删除。

--replace voting disk

--which crsctl确认crsctl的全路径

/s01/oracle/product/10.2.0/crs_1/bin/crsctl

--查询当前的votedisk

crsctl query css votedisk

--添加新的votedisk

crsctl add css votedisk /dev/raw/raw11 -force

crsctl add css votedisk /dev/raw/raw12 -force

crsctl add css votedisk /dev/raw/raw13 -force

--删除旧的votedisk

crsctl delete css votedisk /dev/raw/raw2 -force

实际替换voting disk的关键操作：

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw11

Cluster is not in a ready state for online disk addition

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw11 -force

Now formatting voting disk: /dev/raw/raw11

successful addition of votedisk /dev/raw/raw11.

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk

 0.     0    /dev/raw/raw2

 1.     0    /dev/raw/raw11

located 2 votedisk(s).

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw12 -force

Now formatting voting disk: /dev/raw/raw12

successful addition of votedisk /dev/raw/raw12.

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw13 -force

Now formatting voting disk: /dev/raw/raw13

successful addition of votedisk /dev/raw/raw13.

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk

 0.     0    /dev/raw/raw2

 1.     0    /dev/raw/raw11

 2.     0    /dev/raw/raw12

 3.     0    /dev/raw/raw13

located 4 votedisk(s).

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl delete css votedisk /dev/raw/raw2

Cluster is not in a ready state for online disk removal

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl delete css votedisk /dev/raw/raw2 -force

successful deletion of votedisk /dev/raw/raw2.

[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk

 0.     0    /dev/raw/raw11

 1.     0    /dev/raw/raw12

 2.     0    /dev/raw/raw13

located 3 votedisk(s).

[root@rac1-server rules.d]#

附录：本次实验环境：

1.旧存储模拟：4块盘：其中第1块盘分成了2个区，绑定为raw设备raw1和raw2，分别给ocr和voting disk使用，剩余3块是给ASM使用的：



2.新存储模拟：10块盘：其中前三块（raw11，raw12，raw13）给voting disk使用，第4块和第5块（raw14和raw15）给ocr使用：



3.使用新存储3块10G的盘和2块5G的盘分别新增DATADG和FRA2个ASM磁盘组，其中DATADG是Normal冗余，FRA是External冗余：