OCR和VOTING DISK的MIRROR DISK的添加和刪除

Oracle10gR2推薦建立OCR和VD的冗餘，以消除單點故障，下面記錄具體的添加和刪除步驟。

一、添加OCR

1) 停止crs，分別在所有節點執行
# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl stop crs
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.

2) 導出ocr數據
# /u01/app/oracle/product/10.2.0/crs_1/bin/ocrconfig -export /tmp/ocr.bak

3) 編輯ora.loc文件，增加鏡像ocrmirrorconfig_loc，所有需要增加ocr文件的節點都需要執行該操作
# vi /etc/oracle/ocr.loc
ocrconfig_loc=/ocfs/clusterware/ocr
ocrmirrorconfig_loc=/ocfs/clusterware/ocr2
local_only=FALSE

4) 導入ocr數據
# /u01/app/oracle/product/10.2.0/crs_1/bin/ocrconfig -import /tmp/ocr.bak

5) 檢查添加後的結果
# /u01/app/oracle/product/10.2.0/crs_1/bin/ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          2
         Total space (kbytes)     :     262144
         Used space (kbytes)      :       3824
         Available space (kbytes) :     258320
         ID                       :   93257176
         Device/File Name         : /ocfs/clusterware/ocr
                                    Device/File integrity check succeeded
         Device/File Name         : /ocfs/clusterware/ocr2
                                    Device/File integrity check succeeded

         Cluster registry integrity check succeeded

6) 啓動crs，可以用crsctl start crs
7) 檢查crs狀態crsctl check crs

二、刪除mirror比較簡單，去掉/註釋掉ocrmirrorconfig_loc這行，然後刪除相應的設備/文件就可以了。

三、添加Voting Disk

1) 查看crs狀態
# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl check crs
CSS appears healthy
CRS appears healthy
EVM appears healthy

# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk
 0.     0    /ocfs/clusterware/votingdisk

located 1 votedisk(s).

2) 添加votedisk
# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /ocfs/clusterware/votingdisk2
Cluster is not in a ready state for online disk addition

# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /ocfs/clusterware/votingdisk2 -force
Now formatting voting disk: /ocfs/clusterware/votingdisk2
successful addition of votedisk /ocfs/clusterware/votingdisk2.

# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk
 0.     0    /ocfs/clusterware/votingdisk
 1.     0    /ocfs/clusterware/votingdisk2

located 2 votedisk(s).

四、voting disk 的刪除，同上，同樣需要 -force參數
# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl delete css votedisk /ocfs/clusterware/votingdisk2
Cluster is not in a ready state for online disk removal

# /u01/app/oracle/product/10.2.0/crs_1/bin/crsctl delete css votedisk  /ocfs/clusterware/votingdisk2 -force
successful deletion of votedisk  /ocfs/clusterware/votingdisk2.