12c OCR corrupted results in CRS stack down.

12c OCR corrupted results in CRS stack down.

1. check crsd.trc
2017-03-21 16:14:44.667838 :  CRSOCR:2580299264:  OCR context init failure.  Error: PROC-26: Error while accessing the physical storage Storage layer error [Insufficient quorum to open OCR devices] [0]
2017-03-21 16:14:44.668018 :    CRSD:2580299264:  Created alert : (:CRSD00111:) :  Could not init OCR, error: PROC-26: Error while accessing the physical storage Storage layer error [Insufficient quorum to open OCR devices] [0]
2017-03-21 16:14:44.668032 :    CRSD:2580299264: [PANIC] CRSD exiting: Could not init OCR, code: 26
2017-03-21 16:14:44.668078 :    CRSD:2580299264:  Done.



2. ocrcheck reported same problem.
[root@testdb01 ~]# ocrcheck
PROT-602: Failed to retrieve data from the cluster registry
PROC-26: Error while accessing the physical storage Storage layer error [Insufficient quorum to open OCR devices] [0]



3. check if there's any ocr backups.
[root@testdb01 ~]# cd /u01/app/12.1.0.2/grid/cdata/cluster-test07/
[root@testdb01 cluster-test07]# ll
total 25156
-rw-r--r-- 1 oracle oinstall 1687552 Feb 22 15:49 backup_20170222_154955.ocr
-rw-r--r-- 1 oracle oinstall 1712128 Feb 22 15:49 backup_20170222_154956.ocr
-rw-r--r-- 1 oracle oinstall 1863680 Mar  8 02:06 week.ocr
-rw-r--r-- 1 oracle oinstall 1863680 Mar 15 02:07 week_.ocr
-rw-r--r-- 1 oracle oinstall 1863680 Mar 19 02:07 day.ocr
-rw-r--r-- 1 oracle oinstall 1863680 Mar 20 02:07 day_.ocr
-rw-r--r-- 1 oracle oinstall 1863680 Mar 20 06:07 backup02.ocr
-rw-r--r-- 1 oracle oinstall 1863680 Mar 20 10:07 backup01.ocr
-rw-r--r-- 1 oracle oinstall 1863680 Mar 20 14:07 backup00.ocr
-rw-r--r-- 1 root   root     1859584 Mar 20 18:37 23219979.ocr
-rw-r--r-- 1 root   root     1863680 Mar 20 22:37 41104710.ocr
-rw-r--r-- 1 root   root     1863680 Mar 21 02:37 25823987.ocr
-rw-r--r-- 1 root   root     1863680 Mar 21 06:37 42138219.ocr
-rw-r--r-- 1 root   root     1863680 Mar 21 10:37 17919197.ocr
[root@testdb01 cluster-test07]# ls -lht
total 25M
-rw-r--r-- 1 root   root     1.8M Mar 21 10:37 17919197.ocr
-rw-r--r-- 1 root   root     1.8M Mar 21 06:37 42138219.ocr
-rw-r--r-- 1 root   root     1.8M Mar 21 02:37 25823987.ocr
-rw-r--r-- 1 root   root     1.8M Mar 20 22:37 41104710.ocr
-rw-r--r-- 1 root   root     1.8M Mar 20 18:37 23219979.ocr
-rw-r--r-- 1 oracle oinstall 1.8M Mar 20 14:07 backup00.ocr
-rw-r--r-- 1 oracle oinstall 1.8M Mar 20 10:07 backup01.ocr
-rw-r--r-- 1 oracle oinstall 1.8M Mar 20 06:07 backup02.ocr
-rw-r--r-- 1 oracle oinstall 1.8M Mar 20 02:07 day_.ocr
-rw-r--r-- 1 oracle oinstall 1.8M Mar 19 02:07 day.ocr
-rw-r--r-- 1 oracle oinstall 1.8M Mar 15 02:07 week_.ocr
-rw-r--r-- 1 oracle oinstall 1.8M Mar  8 02:06 week.ocr
-rw-r--r-- 1 oracle oinstall 1.7M Feb 22 15:49 backup_20170222_154956.ocr
-rw-r--r-- 1 oracle oinstall 1.7M Feb 22 15:49 backup_20170222_154955.ocr


4. restore OCR
[root@testdb01 cluster-test07]# ocrconfig -restore backup00.ocr
[root@testdb01 cluster-test07]# crsctl start res ora.crsd -init
CRS-2672: Attempting to start 'ora.crsd' on 'testdb01'
CRS-2676: Start of 'ora.crsd' on 'testdb01' succeeded
[root@testdb01 cluster-test07]# ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1652
         Available space (kbytes) :     407916
         ID                       : 1368296587
         Device/File Name         :   +DBFS_DG
                                    Device/File integrity check succeeded

                                    Device/File not configured

                                    Device/File not configured

                                    Device/File not configured

                                    Device/File not configured

         Cluster registry integrity check succeeded

         Logical corruption check succeeded

[root@testdb01 cluster-test07]# crsctl check cluster -all
**************************************************************
testdb01:
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
**************************************************************
test07db02:
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
**************************************************************
[root@testdb01 cluster-test07]# crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details       
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA_test07.dg
               ONLINE  ONLINE       testdb01                 STABLE
               ONLINE  ONLINE       test07db02                 STABLE
ora.DBFS_DG.dg
               ONLINE  ONLINE       testdb01                 STABLE
               ONLINE  ONLINE       test07db02                 STABLE
ora.LISTENER.lsnr
               OFFLINE OFFLINE      testdb01                 STABLE
               ONLINE  ONLINE       test07db02                 STABLE
ora.RECO_test07.dg
               ONLINE  ONLINE       testdb01                 STABLE
               ONLINE  ONLINE       test07db02                 STABLE
ora.asm
               ONLINE  ONLINE       testdb01                 Started,STABLE
               ONLINE  ONLINE       test07db02                 Started,STABLE
ora.net1.network
               ONLINE  ONLINE       testdb01                 STABLE
               ONLINE  ONLINE       test07db02                 STABLE
ora.ons
               ONLINE  ONLINE       testdb01                 STABLE
               ONLINE  ONLINE       test07db02                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       testdb01                 STABLE
ora.LISTENER_SCAN2.lsnr
      1        ONLINE  ONLINE       test07db02                 STABLE
ora.LISTENER_SCAN3.lsnr
      1        ONLINE  ONLINE       test07db02                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       test07db02                 192.168.17.3 192.168
                                                             .17.4,STABLE
ora.cvu
      1        ONLINE  ONLINE       test07db02                 STABLE
ora.testdb01.vip
      1        ONLINE  ONLINE       testdb01                 STABLE
ora.test07db02.vip
      1        ONLINE  ONLINE       test07db02                 STABLE
ora.mgmtdb
      1        OFFLINE OFFLINE                               Instance Shutdown,ST
                                                             ABLE
ora.oc4j
      1        ONLINE  ONLINE       test07db02                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       testdb01                 STABLE
ora.scan2.vip
      1        ONLINE  ONLINE       test07db02                 STABLE
ora.scan3.vip
      1        ONLINE  ONLINE       test07db02                 STABLE
--------------------------------------------------------------------------------