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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