To determine if the mounted file system is available, the fault monitor performs I/O operations such as opening, reading, and writing to a test file on the file system. If an I/O operation is not completed within the timeout period, the fault monitor reports an error. To specify the timeout for I/O operations, set the IOTimeout extension property.
The response to an error depends on the type of the file system, as follows:
If the file system is an NFS file system on a qualified NAS device, the response is as follows:
Monitoring of the resource is stopped on the current cluster node.
The resource is placed into the disabled state on the current cluster node, causing the file system to be unmounted from that node.
If the file system is a Sun QFS shared file system, the response is as follows:
If the cluster node on which the error occurred is hosting the metadata server resource, the metadata server resource is failed over to another node.
The file system is unmounted.
If the failover attempt fails, the file system remains unmounted and a warning is given.