NAME
ipmi_watchdog_action — sets action taken if IPMI watchdog timer expires
VALUES
Allowed values
0 No action will be taken
1 Hard reset the system (or partition, on cellular systems)
2 Turn off power (valid on non-cellular systems only)
3 Power system off, then back on (valid on non-cellular systems only)
Recommended values
The value used depends on what the system administrator wants to
happen if the system can not make forward progress.
DESCRIPTION
The
ipmi_watchdog_action
tunable sets the watchdog timer expiration action on
systems with the IPMI (Intelligent Platform Management Interface)
watchdog timer.
To tell if a system has this feature use
ioscan -fnkC ipmi.
If
ipmi
is listed, the IPMI watchdog timer is supported.
HP's Itanium Product Family systems and recent PA
RISC systems use IPMI as part of the system manageability
infrastructure.
IPMI uses a "watchdog timer" to detect conditions where the operating
system has hung or is not responding.
The action configured using the tunable
ipmi_watchdog_action
will take place automatically when this
situation occurs.
For instance, if set to
1,
the system (or partition, on cellular systems)
will hard reset if the OS is hung or not responding.
Who Is Expected to Change This Tunable?
System administrators that want the system to take an action
if system forward progress stops.
Restrictions on Changing
None. This tunable is dynamic.
What Other Tunable Values Should Be Changed at the Same Time?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific.
This parameter may be removed or have its meaning changed in
future releases of HP-UX.
Installation of optional kernel software, from HP or other vendors,
may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or
recommended values. For information about the effects of
installation on tunable values, consult the documentation
for the kernel software being installed.
For information about optional kernel software that was
factory installed on your system, see
HP-UX Release Notes
at
http://docs.hp.com.
AUTHOR
ipmi_watchdog_action
was developed by HP.
Printable version
