[Info-vax] A 5 minutes hang during early stage of a shutdown.

[Stephen Hoffman]

On 2013-01-21 23:23:24 +0000, Jan-Erik Soderholm said:

> During the early stage of a normalt shutdown (with automatic
> reboot), the system hangs for more or less exactly 5 minutes.

> The detached shutdown process is in QUEMAN.EXE and in LEF during
> this period. The queues are "stopped" as far as I could see.
> There was one queue in "stopped pending". This batch queue
> had one job in MUTEX (the reason for the reboot). But, I have
> seen this shutdown delay even without this MUTEX problem.

Invoke the shutdown with verification enabled, and see where the hang 
is.  (You're an experienced OpenVMS manager, so debugging a wad of 
miscreant DCL should be almost second nature.  In addition to enabling 
procedure verification (and if this works in whatever context you're 
running here), something like /SET PREFIX "(!5%T) "/ might help isolate 
the hang, too.

Sort out the particular trigger for the mutex, as those can cause 
various secondary problems.  <http://labs.hoffmanlabs.com/node/231>

As a complete WAG, I've seen vaguely similar SHUTDOWN-time hangs with 
bogus hosts listed in the queue database, and cases where the old host 
name is latent in the queue database after a host has been renamed.



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