Re: RHEL 5.4 Released

Hi, Can anyone say when cmm-2 will be supported on Redhat? I am currently using cmm-1 and it is just not good enough. Thanks, Offer Baruch -Original Message- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Shawn Wells Sent: Sunday, September 06, 2009 8:02 PM To:

Re: z/Linux dasd performance issue

Hello again, FYI the Bugzilla bug of the problem. https://bugzilla.redhat.com/show_bug.cgi?id=520655 Thanks for now, Offer Baruch _ From: עופר ברוך [mailto:offerbar...@gmail.com] Sent: Tuesday, August 04, 2009 1:47 PM To: 'LINUX-390@VM.MARIST.EDU

Re: z/Linux dasd performance issue

issue Hi guys, First of all thanks for the replies... I will be back at work on Sunday... I will try the benchmark tools and send you data from z/VM and Linux. Thanks again! Offer Baruch On Wed, Aug 5, 2009 at 9:50 AM, Rob van der Heij rvdh...@velocitysoftware.com wrote: 2009/8/4 עופר

Re: z/Linux dasd performance issue

My mistake... The file I have is MONWRITE output not PERFSVM... -Original Message- From: Rob van der Heij [mailto:rvdh...@gmail.com] Sent: Tuesday, August 11, 2009 12:09 PM To: offerbar...@gmail.com Subject: Re: z/Linux dasd performance issue 2009/8/11 עופר ברוך offerbar...@gmail.com

z/Linux dasd performance issue

Hi all, I have a big performance problem running Redhat V5.2 on system z. The configuration looks like this: I gave the test Linux an absolute share of 50% (limithard) so cpu won't vary from one test to the other (I have 1 IFL on a z9 BC machine) Linux has 1GB of RAM – no paging from the VM side

Minidisks and DASD model 3/9

Hi all, We just bought some dasd storage specifically for z/VM and for the z/Linux underneath. This is the time to decide what model to use 3/9/27… Originally I thought the bigger the better. We are using DIRMAINT to manage dasd space and now I am not sure what is the best approach. Here

Re: Minidisks and DASD model 3/9

First of all thanks for the answers... But what about 1 model 9 divided to 3 minidisks each on a different Linux? VM is the one creating the IOSQ time now... right? Offer. -Original Message- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Mark Perry Sent: Thursday,

Over Committing Storage in z/VM

Hi all, I have been reading a lot about Linux storage management and I saw a couple of recommendations for over committing storage in z/VM : 1. Give your Linux as little storage as possible and use a VDISK for the first swap device. 2. Use CMM to manage Linux storage. The first

VIPA and OSPFD setup

Hi all, I am trying to setup a VIPA interface on my RHEL V5.2 and distribute the routes using ospfd (using the quagga package). What I am trying to accomplish is having 3 physical interfaces (ctc0, hsi0 and eth0) and one dummy interface representing the VIPA interface. The main reason for

Re: Setting up a DMZ under z/VM

Hi there, We are planning to move z/VM into production and having the same thoughts... What we decided to do was to use our current DMZ (a real one - outside of z/VM). Have one VSWITCH for your local Intranet and another VSWITCH connected only to the DMZ trough a separate OSA port. No connection

Re: The correct way to shutdown z/Linux Guest Softly

Hi, I think the best way to shutdown is to use the SIGNAL command with the maximum timeout value of 32767 and using the kernel 'vmpoff=LOGOFF' parameter in the /etc/zipl.conf. This way CP will try to logoff the machine only after about 9 hours (more than enough to fix any delays) and Linux kernel