Voting device I/O has not completed for a long time. This could be due some error with the device the voting file is on or in some element in the path of the I/O to the device.
Verify that the device is working properly including all elements in the I/O path. The voting file listed will be considered inactive in the number of milliseconds specified. Failure of a majority of devices will result in node reboot.
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Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/crsus.htm