3.10.2 Self-checking feature

The self-checking function can be enabled as follows.

Enable the self-checking function

# /opt/FJSVhanet/usr/sbin/hanetparam -e yes

Check the changed parameters.

# /opt/FJSVhanet/usr/sbin/hanetparam print
   Line monitor interval(w)           :5
   Line monitor message output (m)    :0
   Cluster failover (l)               :5
   Standby patrol interval(p)         :15
   Standby patrol message output(o)   :3
   Cluster failover in unnormality (c):OFF
   Line status message output (s)     :OFF
   Hostname resolution by file(h)     :NO
   Self-checking function(e)          :YES

Reboot the system. After reboot, the self-checking function will be enabled.

The self-checking function can be disabled as follows.

Disable the status monitoring function

# /opt/FJSVhanet/usr/sbin/hanetparam -e no

Reboot the system. After reboot, the self-checking function will be disabled.

The following describes how the monitoring is performed with the self-checking function. The virtual driver and control daemon are monitored periodically.

Figure 3.20 Error detection of the self-checking function

The monitoring targets are as follows. A system wide hang or error status cannot be detected.

Monitoring target	Error type	Error detection method
Driver	Hung-up	No response from the virtual driver for 15 seconds
Driver	I/O Error	Information is not received from the driver five times in a row
Daemon	Hung-up	There is no response from the control daemon for 300 seconds
	I/O error	Information is not received from the control daemon five times in a row
	Stopped process detection	There is no control daemon process

If an error has been detected, a message similar to the following will be output to syslog. After this, the monitoring function will be stopped. To restart monitoring, reboot the system after collecting troubleshooting information.

ERROR: 97427: sha driver error has been detected. code=xxx

xxx: error type (hung-up or I/O error)

ERROR: 97627: hanetctld error has been detected. code=xxx

xxx: error type (hung-up, I/O error, or stopped process)

Note that placing a script in the following location allows the script to be executed when an error is detected. For more details, see "3.11.2 Setting user command execution function".

/etc/opt/FJSVhanet/script/system/monitor

3.10.2 Self-checking feature

3.10.2.1 How to set up the self-checking function

3.10.2.2 Error detection of the self-checking function