Re: [CentOS-virt] Machine freeze

2009-04-30 Thread Ljubomir Ljubojevic
Karanbir, can you please, in short, explain to me current status of 
64-bit CentOS compared to i386? Is it's maturity same as of i386?

I started to actively use CentOS when 4.2 was last version. My decision 
to use i386-only was based on issues with some (or many?) drivers like 
madwifi for AR5007, it's unavailability for older PC's, my impression in 
that time was that it was not stable enough, and the main thing was 
since I decided to create my own mirror of main and third party 
repositories for internal use, I went with i386.

What is actual gain in using X86_64? Performance in %? Main advantages 
beside performance? The real question is, does it pay off to spend 20-30 
GB of HDD space for X86_64 if i386 does the job nicely? Just a sentence 
or two would be most appreciated.

Karanbir Singh wrote:
 Mathew S. McCarrell wrote:
 Well, I'm actually not using a PAExen kernel but I don't believe that I 
 need to be since I'm running the 64-bit version of CentOS.  Am I 
 mistaken in that assumption?

 
 Matthew, you are right.
 
 Also, the idea of running a PAE kernel on CentOS is non relevant
 

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Re: [CentOS-virt] Virt-install

2009-04-29 Thread Ljubomir Ljubojevic
mattias wrote:
 Exuse all my questiosn but i not find any info about virt-install on
 centos.org
 So how install e.g debian with virt-install with an iso?
My suggestion is to go install 
http://www.lfarkas.org/linux/packages/centos/lfarkas.repo in your 
/etc/yumconfig.d folder and run yum install virt-manager and maybe few 
more needed packages. It is GUI for management of virtual machines. It 
is under the Red Hat's wing and I used it to easily set ALL parameters 
for install. There is no need for virt-install commands.

 
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Re: [CentOS-virt] Virt-install

2009-04-29 Thread Ljubomir Ljubojevic
Version number. It's 0.5.3-10. Current version on lfarkas's repository 
is 0.7.0-4. I use it (0.7.0) for a month now, I think, and have not seen 
any issues so far.

I also use kvm-84 from his repository and I have mot seen any problems 
except I am not able to connect with virtsh to qemu:///system, from 
root, just qemu:///test. All clients are CentOS 5.3 with kernel 
2.6.18-128.1.6, but I must keep virtual host (CentOS 5.3) on 
2.6.18-92.1.22 kernel because of issues with MB with AMD chipset (I was 
going to report this but never got the time to prepare all the info needed).
Ljubomir

Karanbir Singh wrote:
 Ljubomir Ljubojevic wrote:
 My suggestion is to go install 
 http://www.lfarkas.org/linux/packages/centos/lfarkas.repo in your 
 /etc/yumconfig.d folder and run yum install virt-manager 
 
 Whats wrong with the virt-manage etc already included in CentOS ?
 
 - KB
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Re: [CentOS-virt] xen

2009-04-28 Thread Ljubomir Ljubojevic
mattias wrote:
 Can you or someone provide a link?
Here, go to this location http://packages.ubuntu.com/ and choose your 
system, then select Base utilities and then chose kernel-image 
and/or linux-image

Choose ubuntu forums from this location 
http://www.ubuntu.com/support/community/webforums to ask for further 
help ( I never used ubuntu).


like:
http://packages.ubuntu.com/dapper/base/

 
 
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Re: [CentOS-virt] xen

2009-04-28 Thread Ljubomir Ljubojevic
It should be possible. I used virt-manager (GUI) from lfarkas's 
repository and used iso files to boot everything (it's much faster). It 
is much easier to set things from GUI.

mattias wrote:
 Can i use a iso to install a os with virt-install?
 
 
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Re: [CentOS-virt] xen

2009-04-27 Thread Ljubomir Ljubojevic
just download it from repository on the net.
mattias wrote:
 Yes but i havent access to the orig kernel
 
 -Ursprungligt meddelande-
 Från: centos-virt-boun...@centos.org
 [mailto:centos-virt-boun...@centos.org] För Christopher G. Stach II
 Skickat: den 27 april 2009 22:00
 Till: Discussion about the virtualization on CentOS
 Ämne: Re: [CentOS-virt] xen
 
 
 - mattias m...@mjw.se wrote:
 
 Have anyone get a ubuntu guest worked in centos?
 I try now but only recive errors
 insmod: error inserting '/lib/scsi_mod.ko': -1 Operation not permitted
 [..]
 I use
 kernel = /boot/vmlinuz-2.6.18-128.el5xen  
 ramdisk = /boot/initrd-2.6.18-128.1.6.el5xen
 Any tip?
 
 Use pygrub or pull the Ubuntu Xen kernel and initrd out to your dom0 and
 use those for the Ubuntu guests.
 

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Re: [CentOS-virt] lfarkas Repository + KVM on centos Wiki

2009-04-23 Thread Ljubomir Ljubojevic
Fabian Arrotin wrote:
 Rainer Traut wrote:
 Dear all,

 I've succesfully installed a F10 x86_64 KVM guest on C5 x86_64 with the 
 help of the wiki - running for 7 days now. :)

 Two questions;
 What's the state of the lfarkas's repository - can it be trusted - I 
 guess yes but google did not help much.
 It's only mentioned in the kvm howto - not under the third party repos. 
 And sadly http://www.lfarkas.org/ is empty.

 
 I suppose you already know that kvm will be included by default in the 
 upcoming 5.4 release ?
 It will be provided only for x86_64 though (afaik ...)
 
Compiling kvm-mod kernel plugin from source for i386 platform is not 
very big deal.
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[CentOS-virt] virsh can not connect, but virt-manager does

2009-04-22 Thread Ljubomir Ljubojevic
Hi,

i am having problems with virsh utility. I have installed 3 KVM virtual 
OS-es on top of CentOS 5.3 i386 (with kernel 
2.6.18-92.1.22.el5.centos.plus from 5.2, necessary on AMD/ATI MB I 
have). I have compiled KVM modules from lfarkash-es sorce rpm's and 
libvirt and managers are recompiled from Fedoras repositories.

Problem is following:

Guests are installed with virt-manager and whenever I start him I can 
start and login to guest. on virt-manager's GUI says it connects to 
qemu:///system on localhost.

when I try to use virsh with:

[drl...@vmaster ~]$ virsh --connect qemu:///system
error: failed to connect to the hypervisor

same is with root user.

It seams I have leftovers from few versions (just find out), I will see 
  to they I reinstalled:

[r...@vmaster ~]# rpm -qa *kvm*
kvm-tools-83-5
etherboot-roms-kvm-5.4.4-8
kvm-kmod-debuginfo-83-1
kmod-kvm-83-1
kvm-83-5
kmod-kvm-84-1.el5
[r...@vmaster ~]#

, but since virt-manager is working this should not cause this problem.

I saw this:
http://www.linux-kvm.org/page/Running_libvirt_with_KVM

where it says to create symlink for /usr/bin/kvm but they point to 
X86_64 file and I have i386 kernel.

I hope someone can help me. Any output you need, just say, i am 
experienced with linux.

Ljubomir
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