ASM Hang and OCR Inaccessible When NFS Votefile is Switched Off (Doc ID 1458333.1)

Last updated on MARCH 18, 2013

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.0 and later
Information in this document applies to any platform.

Symptoms

1.RAC with multipathing configured and 2 separate Storage
2. 1st VOTING Disk is located in StorageA and the second VOTING DISK in Storage B and the third VOTING DISK on a NFS Device. The whole system was running fine.

 

crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
1. ONLINE   2f03fa115b2d4f34bfb4f2bf7c56b522 (ORCL:STOR3_VOTING1) [VOTING]
2. ONLINE   0b0b57b4e94a4fe5bf6c4890fd0a9e14 (ORCL:STOR4_VOTING2) [VOTING]
3. ONLINE   0a39f079d31e4fdcbf568617216949e8 (/vote/voting_tsun01) [VOTING]
Located 3 voting disk(s).


3. By a planned Downtime the NFS VOTING Disk went offline and after 2 hour the Voting Diskgroup went off-line and the OCR was not available any more and the complete RAC hang.
4. Even after several reboot can the VOTING Diskgroup not brought on-line.
5. Only at first after the NFS Voting DISK was on-line again, customer could mount the Voting Diskgroup.

In crsd log file ,

 

2012-05-05 00:56:26.695
[cssd(2375)]CRS-1615:No I/O has completed after 50% of the maximum interval. Voting file /vote/tsun_voting will be considered not functional in 99420 milliseconds
2012-05-05 00:57:16.764
[cssd(2375)]CRS-1614:No I/O has completed after 75% of the maximum interval. Voting file /vote/tsun_voting will be considered not functional in 49360 milliseconds
2012-05-05 00:57:46.795
[cssd(2375)]CRS-1613:No I/O has completed after 90% of the maximum interval. Voting file /vote/tsun_voting will be considered not functional in 19330 milliseconds
2012-05-05 00:58:06.865
[cssd(2375)]CRS-1604:CSSD voting file is offline: /vote/tsun_voting; details at (:CSSNM00058:) in /oracle/grid/log/tsunami1/cssd/ocssd.log.
2012-05-05 04:54:06.170
[cssd(2375)]CRS-1605:CSSD voting file is online: /vote/tsun_voting; details in /oracle/grid/log/tsunami1/cssd/ocssd.log.

Changes

 NFS mount point which was holding one of the Voting disk ,was made offlined though other 2 voting disks were available on local storage.

Cause

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