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Full Discussion: Server hung
Operating Systems HP-UX Server hung Post 96353 by biznatch on Thursday 19th of January 2006 10:58:32 AM
Old 01-19-2006
Server hung
So my server was hung when I came in this morning. It was responding to pings, but the console and telnet sessions would not respond. There was no disk activity. The display said FA1F which I discovered that the "A" represents a high CPU load. I tired several things to get it going but was forced to boot server.

The first time I tried to boot the server it said "Terminating selection process. No boot device found".

*** Let me just clarify that I am an AIX guy and I just inherited this server and do not know much about HPUX.***

Having said that, I didn't know what to do so I booted the server again.

This time it came up. So I started doing some troubleshooting when it hung again. I was running the swapinfo command when it hung. I'm not sure if it was because of the swapinfo command or just a coincidence.

The display went to FA1F again so I waited for about 15 min and was forced to boot it. It seems to be working now.

Any idea what is going on here? Help with diags or troubleshooting steps would be great.

Thanks.

# uname -r
B.10.20
 

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LEARN ABOUT HPUX

ipmi_watchdog_action

ipmi_watchdog_action(5) 					File Formats Manual					   ipmi_watchdog_action(5)

NAME

       ipmi_watchdog_action - sets action taken if IPMI watchdog timer expires

VALUES

   Failsafe
   Default
   Allowed values
   Recommended values
       The value used depends on what the system administrator wants to happen if the system can not make forward progress.

DESCRIPTION

       The 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 If 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
       will take place automatically when this situation occurs.

       For instance, if set to 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 tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

SEE ALSO

       kctune(1M), sam(1M), gettune(2), settune(2).

							     Tunable Kernel Parameters					   ipmi_watchdog_action(5)
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