A gentle reminder that the next meeting of Hillgang will take place on
Friday 26 March, in Herndon Virginia at the CA office. The meeting¹s agenda
and directions are found at http://www.vm.ibm.com/events/hill0326.pdf.
Hi
I have a question. What I have been doing up to this point for a new
z/Linux guest build is, not necessarily in this order and does not
necessarily include all steps but,
Crave out the DASD for the z/Linux guest
Init the DASD using CPFMTXA putting a label on the disk
I have meant to bring this up to the list before now, but since you
mention it...
I use the clone a golden image methodology. I've used DDR, which
always works, and I've used dasdfmt and dd, which sometimes results in
an unstable system. I can't pin it down exactly, but I think it happens
Use LXFMT from z/VM, no need to reformat the disk under Linux.
Mike Walter
Hewitt Associates
The opinions expressed herein are mine alone, not my employer's.
From an earlier post:
Date: Mon, 28 Jan 2008 15:50:31 -0500
Reply-To: r...@vsoftsys.com
Sender: The IBM z/VM Operating
The disks are formatted during the Kick Start not sure if there is a
choice there to init or not during the Kick Start process
Thank You,
Terry Martin
Lockheed Martin - Citic
z/OS and z/VM Performance Tuning and Operating Systems Support
Office - 443 348-2102
Cell - 443 632-4191
-Original
On 3/24/10 1:53 PM, Martin, Terry R. (CMS/CTR) (CTR)
terry.mar...@cms.hhs.gov wrote:
Hi
I have a question. What I have been doing up to this point for a new z/Linux
guest build is, not necessarily in this order and does not necessarily include
all steps but,
Crave out the DASD for
You can DEDICATE by label rather than by real address.
But I still don't like Linux having cyl 0 :)
Marcy
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On 3/24/10 2:40 PM, Marcy Cortes marcy.d.cor...@wellsfargo.com wrote:
You can DEDICATE by label rather than by real address.
But I still don't like Linux having cyl 0 :)
Nice to know. I'd missed that in the help files. Still, safer to let CP and
z/OS duke that one out, and let Linux get on
Terry -- You have to init the DASD when using minidisks- using CPFMTXA to
put a label on -- and you also want to format cylinder 0 to ensure it's seen
as a CP volume. When the zLinux guest does an 'init' -- it is doing a
format of the whole disk - not just an 'init' and label. You can
On Wednesday, 03/24/2010 at 03:22 EDT, David Boyes dbo...@sinenomine.net
wrote:
On 3/24/10 2:40 PM, Marcy Cortes marcy.d.cor...@wellsfargo.com
wrote:
You can DEDICATE by label rather than by real address.
But I still don't like Linux having cyl 0 :)
Nice to know. I'd missed that in the
On 3/24/2010 at 03:38 PM, Scott Rohling scott.rohl...@gmail.com wrote:
I'm not sure how DFDSS reacts to Linux formatted volumes, offhand .. it
does fine with CPVOL volumes and minidisks.
It looks like a regular OS volume with no free space on it. That was the whole
reason the CDL was
why would you do that rather than use minidisks
Just curious, if XRC is wanted, VM doesn't timestamp I/Os, but linux does?
If you use dedicates, isn't the data movers happier?
like 0x0200 and 0x0300
You can use CDL and specify the volume label;
dasdfmt -p -b 4096 -l LNX012 -dcdl -f /dev/dasdd
z/OS duke that one out, and let Linux get on with doing useful stuff.
When giving guests access to real cyl 0, I suggest:
1. If using a full-pack mindisk, use the DEVNO version instead of volser.
That way it doesn't matter if the guest changes the label.
Unless you use mirroring and move to
why would you do that rather than use minidisks
Just curious, if XRC is wanted, VM doesn't timestamp I/Os, but linux does?
If you use dedicates, isn't the data movers happier?
only a wee bit happier for the cyl 0 VM writes on. Linux will still timestamp
on minidisks. and if you
No CP command as far as I know, STSI: I don't think so.
But, performance monitors report this in their LPAR reports. If you've got
Perfkit: PIPE VMC PERFSVM |.
Hence you could use a PIPE to listen to the monitor records and analyse it
yourself. You must be prepared to unravel raw
the perfkit FCX126 LPAR screen shows LPAR weight.
one way to display it is run this to see menu choice 8 - the FCX126 LPAR screen
PERFKIT FCONAPPC FCXRES00 8
From: The IBM z/VM Operating System [ib...@listserv.uark.edu] On Behalf Of
Alain Benveniste
On Wednesday, 03/24/2010 at 04:55 EDT, Alain Benveniste
a.benveni...@free.fr wrote:
Is there a way to get the info if my VM lpar is capped or not and what
is
weight ?
Could be great to see these info with the indicate cmd...?
This info is needed for us to avoid to run licenced products
On Wednesday, 03/24/2010 at 04:51 EDT, Ward, Mike S mw...@ssfcu.org
wrote:
I thought there was overhead in specifying it as a minidisk rather than
a dedicated full disk. The overhead would be in the translation of the
I/O addresses and such. You know like linux reading cyl 0 when it's
really
Thanks all for the information.
As far as DEDICATING the volume is concerned I thought that the I/O
overhead was cheaper that is why I was wondering about this. I am fine
with doing the way I have always done it (MDISK) but someone had
suggested this to me and I wanted to find out more about
Should everyone be precluded from seeing help wanted ads here because of some
(a few, I hope) companies' (silly, IMHO) policies? Do those companies also
forbid their employees from reading newspaper classified sections or visiting
help wanted sites on their home computers? Do the companies
On Wed, Mar 24, 2010 at 11:19 PM, Gabe Goldberg g...@gabegold.com wrote:
Should everyone be precluded from seeing help wanted ads here because of
some (a few, I hope) companies' (silly, IMHO) policies? Do those companies
also forbid their employees from reading newspaper classified sections or
It's not just an issue of narrow-minded corporate management on
theoretical remote systems. Please bear in mind that we are hosted, for
free, by a state-run, tax-supported institution. For better or ill,
UARK has a long-standing policy about not using their infrastructure for
that type of
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