And which real address 0 might that be ?.
Remembering that most people will be running as a guest under a hipervisor
(z/VM) running second level under another hipervisor (PR/SM).
I note our German maintainers have been conspicuously quiet
Shane ...
On Thu, Mar 17th, 2011 at 6:32 AM, Mark Post
On Thu, Mar 17, 2011 at 7:33 AM, Shane G ibm-m...@tpg.com.au wrote:
And which real address 0 might that be ?.
Remembering that most people will be running as a guest under a hipervisor
(z/VM) running second level under another hipervisor (PR/SM).
And when? At any given time, each virtual
On Wed, Mar 16, 2011 at 01:40:36PM -0500, Mark Wheeler wrote:
Greetings all,
Is there a way to tell externally (command or otherwise) where the
zLinux kernel is loaded in memory?
The kernel gets loaded to address absolute zero and uses a 1:1
mapping for virtual to physical pages.
/proc/iomem
As Rob pointed out, good luck trying to figure what that actually resolves to
hardware-wise.
Shane ...
On Thu, Mar 17th, 2011 at 8:46 PM, Heiko Carstens wrote:
The kernel gets loaded to address absolute zero ...
--
For
Originally, the kernel loaded at real addr 64k. That is the default for
Linux on most platforms. But you could change that, and for 1M alignment,
some do so on S/390.
Going with mapped memory, it sounds like absolute zero is the virtual pref
for kernel space. Cool. Easily handled in all virt
On Thu, 17 Mar 2011 10:46:18 +0100
Heiko Carstens heiko.carst...@de.ibm.com wrote:
On Wed, Mar 16, 2011 at 01:40:36PM -0500, Mark Wheeler wrote:
Greetings all,
Is there a way to tell externally (command or otherwise) where the
zLinux kernel is loaded in memory?
The kernel gets loaded
Martin is correct
Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com
This is a PRIVATE message. If you are not the intended recipient, please
delete without copying and kindly advise
On Thursday, 03/17/2011 at 08:28 EDT, Richard Gasiorowski
rgasi...@csc.com wrote:
Martin is correct
LOL! That goes without saying ;-)
Alan Altmark
z/VM and Linux on System z Consultant
IBM System Lab Services and Training
ibm.com/systems/services/labservices
office: 607.429.3323
mobile;
So I suppose I wasted my time heh? thx for the update Alan - will
remember not to add my two cents in the future
Richard (Gaz) Gasiorowski
Solution Architect
CSC
3170 Fairview Park Dr., Falls Church, VA 22042
845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com
This is a PRIVATE
On Thursday, 03/17/2011 at 02:55 EDT, Shane G ibm-m...@tpg.com.au wrote:
And which real address 0 might that be ?.
Remembering that most people will be running as a guest under a
hipervisor
(z/VM) running second level under another hipervisor (PR/SM).
That's a difference that makes no
Perspective is everything.
Perspective is offset 33 degrees left or right of horizontal. Depending on
where the vanishing point is supposed to be. 8-)
-- db
(who says art classes are not useful in technical jobs? 8-))
--
For
Quote: I note our German maintainers have been conspicuously quiet
Allright, so here's the short answer to the original question. You can
build the kernel with either a tape or
a card reader boot loader. When you IPL that, it gets loaded into guest
real memory starting from address
0. However, if
An obvious question that no one has bothered to ask as yet:
What is the problem you're trying to solve with this? Or, why do you want to
know where the kernel loads, and what will you gain from it?
Too many times, users or other people (programmers, other sysadmins, ...)
come to us with a
People,
Apparently, i have the same problem describe in this old thread (
http://www.opensubscriber.com/message/linux-390@vm.marist.edu/12394163.html
)
i have try setting up lvm.conf like suggest to use filter like :
filter = [ a|/dev/mapper/*|,r|/dev/sd*|,r|/dev/.*/by-path/.*|,
Bob,
No, the question was asked previously, but I chose to ignore it. For one,
because it would take way too long to explain adequately, and also that the
thread would quickly expand exponentially.
Quick answer: we have an app that sees elongated response times on the first
transaction of
If you have never been to SHARE, and/or would like to present
at SHARE (and yes, people like to hear your experiences),
here's the call for presentations for the next SHARE.
SHARE in Orlando Call for Presentations
SHARE in Orlando, August 7 - 12, 2011 in Orlando, FL
On 3/17/2011 at 12:49 PM, Rogério Soaresrogerio.soa...@gmail.com wrote:
People,
Apparently, i have the same problem describe in this old thread (
http://www.opensubscriber.com/message/linux-390@vm.marist.edu/12394163.html
)
i have try setting up lvm.conf like suggest to use filter
Mark, is this WAS? Is it possible it involves the heap? (BTDT :)
Marcy
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@vm.marist.edu] On Behalf Of Mark
Wheeler
Sent: Thursday, March 17, 2011 9:56 AM
To: LINUX-390@vm.marist.edu
Subject: Re: [LINUX-390] Where is kernel
Mark, sorry for long post, but,
i modify the filter to:
filter = [ r|/dev/.*/by-path/.*|, r|/dev/.*/by-id/.*|,
a|/dev/mapper/*|, a/.*/ ]
this way, all file systems are remount ok after boot.. but i confess, i
can't understand the output from vgscan -vvv , appears all the same to be...
On 3/17/2011 at 01:43 PM, Rogério Soaresrogerio.soa...@gmail.com wrote:
Mark, sorry for long post, but,
i modify the filter to:
filter = [ r|/dev/.*/by-path/.*|, r|/dev/.*/by-id/.*|,
a|/dev/mapper/*|, a/.*/ ]
this way, all file systems are remount ok after boot.. but i
Date: Thu, 17 Mar 2011 12:22:35 -0500
From: marcy.d.cor...@wellsfargo.com
Subject: Re: Where is kernel loaded in memory?
To: LINUX-390@VM.MARIST.EDU
Mark, is this WAS? Is it possible it involves the heap? (BTDT :)
Marcy
MQ Broker.
here is output with de filter suggest by Deric..
dtsh101:~ # vgscan -vvv
Processing: vgscan -vvv
O_DIRECT will be used
Setting global/locking_type to 1
File-based locking selected.
Setting global/locking_dir to /var/lock/lvm
Wiping cache of LVM-capable
MQ Broker.
Date: Thu, 17 Mar 2011 12:22:35 -0500
From: marcy.d.cor...@wellsfargo.com
Subject: Re: Where is kernel loaded in memory?
To: LINUX-390@VM.MARIST.EDU
Mark, is this WAS? Is it possible it involves the heap? (BTDT :)
Marcy
Have you considered SET RESERVE for this guest? What about expanded
storage tweaks/increase?
David
Original Message
Subject: Re: Where is kernel loaded in memory?
From: Mark Wheeler mwheele...@hotmail.com
Date: Thu, March 17, 2011 2:11 pm
To: LINUX-390@VM.MARIST.EDU
MQ Broker.
On 3/17/2011 at 02:09 PM, Rogério Soaresrogerio.soa...@gmail.com wrote:
here is output with de filter suggest by Deric..
From the looks of this, you didn't modify the scan parameter in
/etc/lvm/lvm.conf as he did. Personally, I don't think what he did was
strictly necessary, although it
On 3/15/2011 at 06:06 PM, Lester, Doug dles...@harryanddavid.com wrote:
Hi Mark,
Unfortunately, the user still shows up as guest.
I guess my next question is whether the users are going through Samba at all,
or hitting the printer via CUPS on HTTP port 631. When I look at my wife's
Mark,
i set up the filter recommend, add dm-multipath on /etc/sysconfig/kernel
INITRD_MODULES section.. made
mkinitrd -f mpath and reboote... but now my server dead :)
we are using / on dasd disk
any tips?
thanks again
sdc: Write Protect is off
SCSI device sdc: drive cache: write back
SCSI
On 3/17/2011 at 03:33 PM, Rogério Soaresrogerio.soa...@gmail.com wrote:
Mark,
i set up the filter recommend, add dm-multipath on /etc/sysconfig/kernel
INITRD_MODULES section.. made
mkinitrd -f mpath and reboote... but now my server dead :)
we are using / on dasd disk
any tips?
Yeah,
Mark, just to learn something new today, except how to kill a server hehehe,
i can recover this without reinstall? i have tried boot with kernel
failsafe, but don't work too...
On Thu, Mar 17, 2011 at 4:38 PM, Mark Post mp...@novell.com wrote:
On 3/17/2011 at 03:33 PM, Rogério
Yes to both.
The fundamental problem is one of expectations. One of z/VM's strengths is that
it virtualizes storage. While that means storage can be overcommitted, it also
means that unused storage gets paged out. Alas, some of that storage needs to
get paged back in when the server awakens.
On 3/17/2011 at 03:54 PM, Rogério Soaresrogerio.soa...@gmail.com wrote:
Mark, just to learn something new today, except how to kill a server hehehe,
i can recover this without reinstall? i have tried boot with kernel
failsafe, but don't work too...
Boot the system with the installation
When you have some memory intensive night time activities, like say scanning
checks in cron jobs, or heavy batch stuff, these things happen. We added more
memory :(, although lowering the heap size did help some.
Anyway you can prime the pump (script to touch your pages in a cron job?)?
Marcy
On 3/17/2011 at 04:47 PM, Marcy Cortes marcy.d.cor...@wellsfargo.com
wrote:
When you have some memory intensive night time activities, like say scanning
checks in cron jobs, or heavy batch stuff, these things happen. We added
more memory :(, although lowering the heap size did help some.
Could you set up a cron job / set of cron jobs to go out and wake things up
in the morning before things actually start to get busy? Take the edge off
starting things up?
--
Robert P. Nix Mayo Foundation.~.
RO-OC-1-18 200 First Street SW/V\
507-284-0844
Mark,
On the printer test page, the printer name is \\techlnux\MF_PRT6-7 and
the port name is Samba Printer Port. The same is true in Windows
Explorer. So, I am assuming it is using samba.
Doug
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
Mark
On the printer test page, the printer name is \\techlnux\MF_PRT6-7 and
the port name is Samba Printer Port. The same is true in Windows
Explorer. So, I am assuming it is using samba.
Doug,
Just for grins, go to one of the Windows boxes and try defining a printer like
this:
When it asks
And another good thread was had by all.
Whilst I suspect the initial question was in no way related to the problem
observed, the asking elucidated some fine information on the zSeries port for
those of us with a morbid fascination in such matters.
Thanks to all.
Shane ...
Speaking of good threads, there is a new white paper available on the above
topic at http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP101860
Abstract: This paper will attempt to answer the question: *Does it make sense
for me to run WebSphere* Application Server in a z/VM* DCSS
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