Well, I tend to disagree about your statement that it will not be the
same the next time. We have a tendency to keep the dump disks clean by
processing dumps in a timely manner. Do not forget that the type of
change I am considering is a planned outage/IPL for the purpose of
rearranging things. It is not a random outage. In that event, There will
be no dumps in spool when the system is shutdown. In fact, I could even
SET DUMP OFF just before the shutdown and process any dumps (a very rare
occurrence thanks to the incredible stability of the modern VM) that
exist before he IPL.
And where does it say that spool will spill over into dump space? It is
quite the opposite. If dump fills, then dump space will be allocated
from ordinary spool space. From CP Planning and Administration:
"Dump
tells CP to reserve the spool space on the specified volume
exclusively for dumps."
The word "exclusively" does not mean "exclusive except when it is not."
In other words, it is not an inclusive "exclusively."
Regards,
Richard Schuh
> -----Original Message-----
> From: The IBM z/VM Operating System
> [mailto:[EMAIL PROTECTED] On Behalf Of Stephen Frazier
> Sent: Monday, March 24, 2008 3:43 PM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Re: Adding Spool Volumes
>
> OK, the fact that one time there were no files on or partly
> on the disk in slot 16 when you IPLed with out it does not
> mean that there will not be the next time. As you have the
> disks at 16 and 17 marked for dump storage nothing else
> should be on them. If you are willing to lose all the dumps
> on the spool you can probably get away with changing their
> slots. If the regular spool space gets full and there is free
> space on the dump reserved space then VM will use that space.
> Also if you run out of dump reserved space and VM needs to
> allocate more space for a dump it will use any spool space.
>
> It sounds like you try to keep lots of extra spool space on
> your system. That is good if you can afford it. If you can
> keep your dumps and ordinary spool files separate that is helpful.
>
> Schuh, Richard wrote:
> > The existing spool, not including dump space, volumes would
> remain in
> > place on their current volumes. I do not think that, if
> there were no
> > existing dumps, that relocating those two disks to different slots
> > would be a problem. The system did not even whimper when it came up
> > minus the first of the dump disks a short while ago. It happily
> > allocated both dump files on the remaining disk. The
> operators did not
> > notice any messages, much less have to respond to any, when
> the system
> > was IPLed minus the disk. I noticed that it was missing the
> next day
> > when I entered a Q ALLOC SPOOL command. It has since been
> IPLed with
> > the disk present, and there was nothing out of the ordinary
> during the
> > system start up.
> >
> > Regards,
> > Richard Schuh
>
> --
> Stephen Frazier
> Information Technology Unit
> Oklahoma Department of Corrections
> 3400 Martin Luther King
> Oklahoma City, Ok, 73111-4298
> Tel.: (405) 425-2549
> Fax: (405) 425-2554
> Pager: (405) 690-1828
> email: stevef%doc.state.ok.us
>
