Gary: Thanks for the posting. Thankfully, the problem doesn't happen very 
often. Been many months (or even over a year) since the last time it
happened.

Hasn't happened again since then, (so far).

As I can start up and shut down the system ok without the system failure
happening I am not worried about it.

Hopefully, it'll be 2010 before it happens again.


Brian.


On Fri, 26 Dec 2008 10:35:29 -0700, Gary Robillard
<[log in to unmask]> wrote:

>Hi Brian,
>
>This is a known problem where a process did not "quiesce" during shutdown
>and attempts to do some IO after everything (the IO subsystem in particular)
>else has completed the shutdown process (step 6).
>
>I thought there was a patch for it, but I did find this on the HP ITRC from
>2006:
>
>~~~~~~~~~
>System Abort 653 (SA653) results from a problem when decrementing a counter
>in the GUFD (Global Unique File Descriptor): a data structure created when a
>file is opened and used to facilitate and coordinate access to the file. A
>memory dump is necessary to determine the cause of the abort.
>
>On all current releases of MPE/iX a System Abort 653 can be encountered
>during a system shutdown. The cause is a timing issue with various data
>structures and processes as the operating system terminates processes and
>closes files. It causes no harm to the system or user data and can be
>ignored.
>~~~~~~~
>Thanks,
>
>Gary
>
>Gary Robillard
>
>
>
>-----Original Message-----
>From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf
>Of Brian Donaldson
>Sent: Thursday, December 25, 2008 11:43 PM
>To: [log in to unmask]
>Subject: [HP3000-L] System Failure for Christmas
>
>When I was shutting down my box (917LX) for the night, I reached the
>usual SHUT6 message -- when whammo(!) -- system failure.
>
>Yes, a system failure AFTER the shut6 message.
>
>Here is the info:
>
>SYSTEM ABORT 653 Subsystem 143 (File System)
>Secondary status Info = -300 (not in error manual)
>                        Subsys = 107
>
>System Halt 7, $028D
>
>FLT DEAD at the bottom of the console.
>
>So I restarted the system and everything came up just fine, shut it down in
>a
>normal manner again and after the SHUT6 message this time -- no system
>failure.
>
>This system failure happens to me every now and again, but not too often.
>
>Does anyone have an idea what this system failure is?
>
>TIA,
>Brian Donaldson.
>
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