On 21 Jul 2008 09:51:17 -0700, in bit.listserv.ibm-main
(Message-ID:<[EMAIL PROTECTED]>)
[EMAIL PROTECTED] (Jim Mulder) wrote:
IBM Mainframe Discussion List <IBM-MAIN@BAMA.UA.EDU> wrote
on 07/21/2008 10:26:58 AM:
We had an issue last week where we needed to add memory
to one of our LPARs on the fly. We keep some memory
marked reconfigurable but
we've never had to use it before. We found out that we
had to configure all our reconfigurable storage that the
LPAR in question knew about online in order to get any of
it online because you can only configure elements
apparently.
That's not the issue. My issue with IBM is that when I
went into the System Commands book to try and research
why we had to do it this way and what our alternatives
were I discovered that the section on Central Storage
reconfiguration has not been updated since ES9000
days. Since the book talks about how up to 64M of memory
is broken up and since I was complaining because my
machine wanted to vary memory on or off in 128M chunks
(awfully small when you're talking about 50G) this isn't
very helpful.
Storage reconfiguration is not limited to elements. You
should be able to configure amounts and ranges of storage,
but the amount or range must be a multiple of the
increment size. Unfortunately, there is no MVS operator
command to display the increment size. However, if you
use SYS1.MACLIB(IHASCCB) to map the area pointed to by
CVTSCPIN (CVT+340), then
SCCBSAI (or if it is zero, use SCCBSAIX) allows you to
compute
the increment size.
I guess the obvious reaction is to submit a Readers'
Comment Form for that above procedure to be added to the
System Commands manual.
I'm sorry, Jim, I couldn't resist that.
The real obvious reaction is that we need a command to tell
us what the increment size is, or for the error message to
display the legal increments. We shouldn't each have to
write programs based on Jim's hints.
At a time when you need this command, you DON'T want to be
searching through the many possible manuals and red books
looking for the information, nor, upon finding Jim's post,
writing and debugging a program to compute the increment
size.
I cannot receive mail at the address this was sent from.
To reply directly, send to ar23hur "at" intergate "dot" com
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