Sun Microsystems Netra 1290, Administration Manual

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78 Netra 1290 Server System Administration Guide • May 2006
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The operating system heartbeat stops within a designated timeout period.
The default timeout value is three minutes, but you can override this value by
setting the
watchdog_timeout_seconds
parameter in the domain
/etc/systems
file. If you set the value to less than three minutes, the system
controller uses the default value of three minutes as the timeout period. For
details on this system parameter, see the
system
(4) man page of your Solaris
Operating System release.
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The system does not respond to interrupts.
When the
host watchdog
(as described in the
setupsc
command) is enabled,
the system controller automatically performs an externally initiated reset (XIR)
and reboots the hung operating system. If the OpenBoot PROM NVRAM variable,
error-reset-recovery
is set to
sync
, a core file is also generated after an XIR
and can be used to troubleshoot the operating system hang.
CODE EXAMPLE 5-6
shows the console message displayed when the operating system
heartbeat stops.
CODE EXAMPLE 5-7
shows the console message displayed when the operating system
does not respond to interrupts.
Diagnosis Events
Certain nonfatal hardware errors are identified by the Solaris Operating System and
reported to the system controller. The system controller does the following:
CODE EXAMPLE 5-6
Example of Message Output for Automatic Domain Recovery After the Operating
System Heartbeat Stops
Tue Dec 09 12:24:47 commando lom: Domain watchdog timer expired.
Tue Dec 09 12:24:48 commando lom: Using default hang-policy (RESET).
Tue Dec 09 12:24:48 commando lom: Resetting (XIR) domain.
CODE EXAMPLE 5-7
Example of Console Output for Automatic Recovery After the Operating System Does
Not Respond to Interrupts
Tue Dec 09 12:37:38 commando lom: Domain is not responding to interrupts.
Tue Dec 09 12:37:38 commando lom: Using default hang-policy (RESET).
Tue Dec 09 12:37:38 commando lom: Resetting (XIR) domain