Hello Steve,
Thanks for answering my question. I checked it out.
The MINIOPT after a LINK statement does not work as MINIOPT is according
to
the CP Planning and Administration guide an extension to the MDISK direct
ory
statement. Furthermore it cannot be coded in a PROFILE statement in the C
P
Dear all,
I would like to know how I can get the PAV addresses for a Minidisk that is
linked to a z/LINUX guest.
I have following directory statement(s):
USER CLONSET1 1G 2G G
INCLUDE LNXPROF
MDISK 0201 3390 00011 3390 VMXX01 MR RW WP MP
MINIOPT PAVALIAS 1201
...
Now I link
Date: 07/20/2009 12:59 PM
Subject:Question to PAV on Minidisks
I don't have a full answer to your question. But I want to avoid a
misconception:
- mutipathing in z Architecture means a device can be reached by more
than one path, most often this means more than one CHPID leads to the
device, and each CHPID is connected to a different controlunit.
Your response verifies what I¹d thought was happening, but doesn¹t address
the whole ³multiple writable minidisk² quandary.
I¹m considering something like the following:
USER LINUXGUEST
MDISK 391 3390 1500 500 VOL001 MW
LINK * 391 1391 MW
LINK * 391 2391 MW
Which would give me three virtual
The simple MW approach is surely wrong, it will not create a PAV
environment: Linux will think it has 3 different devices, accidents will
happen.
MDC will avoid the IO; Control Unit cache hit is still IO as concerned for
the z Series, but here PAV would help. AFAIK, PAV will not help if the
Thank you Kris; I think that¹s the piece I was looking for. :)
--
Robert P. Nix Mayo Foundation.~.
RO-OE-5-55 200 First Street SW/V\
507-284-0844 Rochester, MN 55905 /( )\
-^^-^^
In theory, theory and
On Thu, Jul 2, 2009 at 10:47 PM, Kris Buelenskris.buel...@gmail.com wrote:
The simple MW approach is surely wrong, it will not create a PAV
environment: Linux will think it has 3 different devices, accidents will
happen.
You're wrong. A very simple experiment could have shown you that:
On Tue, Jun 30, 2009 at 8:52 PM, RPN01nix.rob...@mayo.edu wrote:
Before I put something huge together to test this, I thought I’d pass it by
all the experts.
Too bad they must all have responded to you off-list.. I would have
loved to see a concise answer. But failing that, let me give it a
Before I put something huge together to test this, I thought I¹d pass it by
all the experts.
Linux has the ability to multipath, and z/VM supports multipathing via PAV.
There¹s lots of documentation and studies showing that you can attach /
dedicate the PAV addresses to a Linux LPAR or guest, and
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