Termination Synchronization function

When the clustering software performs failover processing, it issues a signal to forcibly stop the monitored processes that are not completed. However, a process that is forcibly stopped cannot perform successful termination processing. Therefore, if the process was in the middle of accessing a resource, an inconsistency may occur in the system file.

The HULFT Clustering function includes the termination synchronization feature to terminate the daemon successfully when a failover such as the above occurs. The two modes of the termination synchronization function are as follows:

• Process Synchronization mode

  This mode waits until the currently running HULFT processes are complete and then terminates the daemon successfully.

• Forced Stop mode

  Even if a process is currently running, this mode forcibly stops the process and then terminates the daemon successfully.

The mode to be used to terminate the daemons depends on the type of clustering software and the operation policy.

To select the mode, specify the Termination synchronization commands with the corresponding parameter. The Termination synchronization commands are utilities exclusive to the HULFT Clustering function.

For details, refer to HULFT Clustering function utilities.