19cRAC更换ocr_votingdisk所在的磁盘组

0. 需求
OCR和Votingdisk目前存放在+DG_GRID磁盘组中，计划将OCR和Votingdisk临时迁移至+DG_DATA磁盘组，然后重建+DG_GRID磁盘组，等+DG_GRID磁盘组重建完成后，再将OCR和Votingdisk最终迁移回+DG_GRID磁盘组


1. 磁盘组信息
[grid@19crac1 ~]$ asmcmd lsdg
State    Type    Rebal  Sector  Logical_Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Voting_files  Name
MOUNTED  EXTERN  N         512             512   4096  4194304     12288     5876                0            5876              0             N  DG_DATA/
MOUNTED  EXTERN  N         512             512   4096  4194304      8192     7816                0            7816              0             Y  DG_GRID/
[grid@19crac1 ~]$


2. 当前状态
[root@19crac1 ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     901284
         Used space (kbytes)      :      84588
         Available space (kbytes) :     816696
         ID                       : 1272834433
         Device/File Name         :   +DG_GRID
                                    Device/File integrity check succeeded

         Cluster registry integrity check succeeded

         Logical corruption check succeeded

[root@19crac1 ~]# crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
 1. ONLINE   a03805e7da4b4f99bf5e33e26be1aa5d (AFD:DG_GRID1) [DG_GRID]
Located 1 voting disk(s).
[root@19crac1 ~]#


3. 哪些信息存放在以前的OCR磁盘组中
OCR
OCR自动生成的备份位置
Votingdisk
ASM的spfile
ASM的密码文件
ASM的密码文件备份


4. 所有更换操作
4.1 更换ASM的spfile
asmcmd spget
asmcmd spmove +DG_GRID/sdsw-cluster/ASMPARAMETERFILE/registry.253.1135716505 +DG_DATA/spfileasm.ora
asmcmd spget


4.2 更换ASM的密码文件
asmcmd pwget --asm
asmcmd pwcopy +DG_GRID/orapwASM +DG_DATA/orapwASM
asmcmd pwset --asm +DG_DATA/orapwASM -f
asmcmd pwget --asm


4.3 更换ASM的密码文件备份
srvctl config asm
srvctl modify asm -pwfilebackup +DG_DATA/orapwASM_backup


4.4 更换OCR
# ocrcheck
# ocrconfig -add +DG_DATA
# ocrconfig -delete +DG_GRID
# ocrcheck


4.5 OCR自动生成的备份位置
# ocrconfig -showbackuploc
# ocrconfig -backuploc +DG_DATA
# ocrconfig -showbackuploc


4.6 更换Votingdisk
# crsctl query css votedisk
# crsctl replace votedisk +DG_DATA
# crsctl query css votedisk


5. 重启集群验证
# crsctl stop crs
# crsctl start crs
# crsctl check crs


6. 删除dg_grid磁盘组
sqlplus / as sysasm
alter diskgroup dg_grid dismount;  --除了将执行drop diskgroup的节点之外，其他节点都执行该命令
drop diskgroup dg_grid including contents;