ocr磁盘组故障（磁盘crc错误）

ocr磁盘组故障

1，有自动备份，恢复

dd命令复制

首先备份

dd if=/dev/raw/raw1 of=/home/grid/voting.2017

恢复

dd if=/home/oracle/voting.2017 of=/dev/raw/raw1

md_backup命令备份磁盘组

asmcmd -p

md_backup /home/grid/ocrvote2.bak -G OCR

手工导出

./ocrconfig -export /home/grid/ocr2.bak

2、模拟损坏

dd if=/dev/zero of=/dev/raw/raw1 bs=8192 count=12800

报错

[grid@rac1 rac1]$ ocrcheck

PROT-602: Failed to retrieve data from the cluster registry

PROC-26: Error while accessing the physical storage

集群状态正常

[grid@rac1 rac1]$ crsctl check crs

CRS-4638: Oracle High Availability Services is online

CRS-4537: Cluster Ready Services is online

CRS-4529: Cluster Synchronization Services is online

CRS-4533: Event Manager is online

2017-10-07 16:19:38.269:

[/u01/app/11.2.0/grid/bin/orarootagent.bin(3040)]CRS-5822:Agent '/u01/app/11.2.0/grid/bin/orarootagent_root' disconnected from server. Details at (:CRSAGF00117:) {0:3:307} in /u01/app/11.2.0/grid/log/rac1/agent/crsd/orarootagent_root/orarootagent_root.log.

2017-10-07 16:19:38.274:

[/u01/app/11.2.0/grid/bin/scriptagent.bin(17425)]CRS-5822:Agent '/u01/app/11.2.0/grid/bin/scriptagent_grid' disconnected from server. Details at (:CRSAGF00117:) {0:13:3} in /u01/app/11.2.0/grid/log/rac1/agent/crsd/scriptagent_grid/scriptagent_grid.log.

2017-10-07 16:19:38.287:

[/u01/app/11.2.0/grid/bin/oraagent.bin(3036)]CRS-5822:Agent '/u01/app/11.2.0/grid/bin/oraagent_grid' disconnected from server. Details at (:CRSAGF00117:) {0:1:7} in /u01/app/11.2.0/grid/log/rac1/agent/crsd/oraagent_grid/oraagent_grid.log.

2017-10-07 16:19:38.298:

[/u01/app/11.2.0/grid/bin/oraagent.bin(3272)]CRS-5822:Agent '/u01/app/11.2.0/grid/bin/oraagent_oracle' disconnected from server. Details at (:CRSAGF00117:) {0:11:843} in /u01/app/11.2.0/grid/log/rac1/agent/crsd/oraagent_oracle/oraagent_oracle.log.

2017-10-07 16:19:38.305:

[ohasd(2103)]CRS-2765:Resource 'ora.crsd' has failed on server 'rac1'.

2017-10-07 16:19:39.738:

[crsd(17471)]CRS-1013:The OCR location in an ASM disk group is inaccessible. Details in /u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16:19:39.757:

[crsd(17471)]CRS-0804:Cluster Ready Service aborted due to Oracle Cluster Registry error [PROC-26: Error while accessing the physical storage

]. Details at (:CRSD00111:) in /u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16:19:44.785:

[ohasd(2103)]CRS-2765:Resource 'ora.crsd' has failed on server 'rac1'.

2017-10-07 16:19:46.138:

[crsd(17484)]CRS-1013:The OCR location in an ASM disk group is inaccessible. Details in /u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16:19:46.147:

[crsd(17484)]CRS-0804:Cluster Ready Service aborted due to Oracle Cluster Registry error [PROC-26: Error while accessing the physical storage

]. Details at (:CRSD00111:) in /u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16:19:48.171:

[ctssd(2629)]CRS-2407:The new Cluster Time Synchronization Service reference node is host rac1.

2017-10-07 16:19:51.185:

[ohasd(2103)]CRS-2765:Resource 'ora.crsd' has failed on server 'rac1'.

2017-10-07 16:19:51.303:

[cssd(2549)]CRS-1625:Node rac2, number 2, was manually shut down

查看自动备份

./ocrconfig -showbackup

检查

crsctl check crs

crsctl query css votedisk

ocrcheck

3、恢复（root用户下）

所有节点停止crs

./crsctl stop crs -f

./crsctl stop has -f

./crsctl disable has

./crsctl disable crs--关闭开机重启

crsctl start crs -excl

以独占的方式打开crs

crsctl start crs -excl -nocrs

创建磁盘组

select name ,COMPATIBILITY from v$asm_diskgroup;

create diskgroup ocr external redundancy DISK '/dev/raw/raw1' ATTRIBUTE

'compatible.asm'='11.2.0.0.0'

;

drop diskgroup ocr force including contents;

ocrconfig -restore /u01/app/11.2.0/grid/cdata/rac-cluster/backup_20171007_153630.ocr

./ocrconfig -restore /u01/app/11.2.0/grid/cdata/rac-cluster/backup00.ocr

执行ocrcheck

是否需要恢复votingdisk

恢复表决磁盘

./crsctl replace votedisk +OCR

停止独占模式运行的clusterware

crsctl stop crs -f

所有节点正常启动crs

crsctl start crs

CVU验证所有RAC节点OCR的完整性

cluvfy comp ocr -n all -verbose