virt April 2009

virt@lists.centos.org

29 participants
13 discussions

kmod-kvm-2.6.18-92.1.18.el5-72-1.x86_64.rpm outdated, need on for 2.6.18-92.1.22.el5
by Michael Schenck 28 May '09

28 May '09

CentOS Virt, I'm looking for an RPM for the kmod-kvm processor specific modules (kvm-intel or kvm-amd). I've been using L. Farkas's repository, but after the recent kernel updates, I'm out of luck. Best Regards, Michael Schenck

4 7

Machine freeze
by Maros TIMKO 05 May '09

05 May '09

Hi all, we are running CentOS 5.2 Xen virtualization system with the latest CentOS packages with couple of VMs on DELL PowerEdge. "Sometimes" the whole machine freezes without anything in log files, anything on the console. "Sometimes" really means we cannot define why or when. Sometimes the machine was idle with just one VM, sometimes quite busy with couple of VMs.  Has anybody had the same experience? If yes, any hints on how to resolve it or how to trace the cause?   Thanks. 

8 14

Virt-install
by mattias 29 Apr '09

29 Apr '09

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?

3 5

xen
by mattias 28 Apr '09

28 Apr '09

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 Loading sd_mod.ko module ksign: module signed with unknown public key - signature keyid: 88a2b9299d40c296 ver=3 insmod: error inserting '/lib/sd_mod.ko': -1 Operation not permitted Loading libata.ko module ksign: module signed with unknown public key - signature keyid: 88a2b9299d40c296 ver=3 insmod: error inserting '/lib/libata.ko': -1 Operation not permitted Loading ata_piix.ko module ksign: module signed with unknown public key - signature keyid: 88a2b9299d40c296 ver=3 insmod: error inserting '/lib/ata_piix.ko': -1 Operation not permitted Loading dm-mod.ko module ksign: module signed with unknown public key - signature keyid: 88a2b9299d40c296 ver=3 insmod: error inserting '/lib/dm-mod.ko': -1 Operation not permitted Loading dm-log.ko module ksign: module signed with unknown public key - signature keyid: 88a2b9299d40c296 ver=3 insmod: error inserting '/lib/dm-log.ko': -1 Operation not permitted Loading dm-mirror.ko module I use kernel = "/boot/vmlinuz-2.6.18-128.el5xen" ramdisk = "/boot/initrd-2.6.18-128.1.6.el5xen" Any tip?

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WinXP Xen guest: compare VNC vs RDP
by Ed Heron 27 Apr '09

27 Apr '09

I'm experimenting with using WinXP Xen guests as an alternative to upgrading workstations. The administrative advantages seem overwhelming. Please share thoughts about using VNC vs RDP for remote desktop connections. Please share any anecdotal information regarding user reactions and/or implementation issues.

7 17

Issues getting Xen NAT networking to work on CentOS 5.3
by Andrew Montgomery-Hurrell 27 Apr '09

27 Apr '09

I've got a virtual network setup going on where I have 3 VMs running on a host system which ran fine under CentOS 5.2 but under 5.3 everything to do with the networking has gone weird. I can't seem to access my VMs over the internal virtual network interfaces, setting their IPs statically in the VM conf files, for some reason the VIFs end up with an IP 127 higher, ie. 10.0.0.1 becomes 10.0.0.128. Ignoring that issue, the main one is that that IP, rather than connect to the running VM's network interface instead just connects to localhost on the host system. The only way I can access the VMs is with 'xm console' which obviously isn't very useful considering I need the VMs to host web content. The VMs can access the outside world and download things such as updates, etc, but the host system can't access them (obviously the outside world can't and this is intentional in this case as their interfaces aren't exposed externally). I've tried this with and without the firewall running and the issue persists, so it's definitely not iptables screwing things up. What's annoying is that my setup worked perfectly fine in 5.2 but in 5.3 it's been nothing but hassle to get working and I'm completely stumped with getting this networking issue sorted. Anyone have any ideas what might be causing the issue?

1 1

state of lfarkas KVM repository + Centos KVM wiki
by Rainer Traut 26 Apr '09

26 Apr '09

Hi all, I have followed the wiki howto to install KVM on my C5 server with a F10 x86_64 guest. Howto here: http://wiki.centos.org/HowTos/KVM With one small problem here: http://www.centos.org/modules/newbb/viewtopic.php?post_id=74275&topic_id=19… the guest is really running stable for one week now. Maybe someone could have a look at udev why it always sets permission for /dev/net/tun wrong and update the wiki? But my actual question is, what's the state of lfarkas repository? Can it be trusted? Sadly there is no frontpage on http://www.lfarkas.org/ Thx Rainer

5 11

lfarkas Repository + KVM on centos Wiki
by Rainer Traut 24 Apr '09

24 Apr '09

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. Second q. I still have problems with the tun device for users as mentioned here: http://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&topic_id=19… An help for this? THx Rainer

3 3

CentOS 5.3 in VMWare Fusion
by Jason Todd Slack-Moehrle 24 Apr '09

24 Apr '09

Hi All, I am trying to run CentOS 5.3-x86_64 in a Vmware Fusion virtual machine on my Mac Pri (10.5.6) My install starts OK, checks media and then I get a message saying "The CentOS CD was not found in any of your CDROM drives. Please insert the CentOS CD and press OK to retry". I have booted from the media though, so I don't understand... Any thoughts? -Jason

3 3

Xen virtual machines management
by Mindaugas Riauba 23 Apr '09

23 Apr '09

Hello, What do you use to manage virtual Xen machines? Nothing complex though preferably. :) I've already converted some servers for a Xen dom0 and starting to loose the picture - which VM runs where and how much resources left on each server. Regards, Mindaugas

3 4

virsh can not connect, but virt-manager does
by Ljubomir Ljubojevic 22 Apr '09

22 Apr '09

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: [drlove@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: [root@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 [root@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

1 0

Creating a new bridge with new eth
by dist-list＠lexum.org 21 Apr '09

21 Apr '09

Hello, I am using eth0 as my xen management interface. There will no VM connected to the interface. I read a lot of articule about adding a interface and create a new bridge. Some add a ip address to the new interface some don't. Do I really need a IP on all interfaces ? Tx

2 1

kernel-vm - humble request
by John Thomas 03 Apr '09

03 Apr '09

Look, I pay nothing for an incredible operating system with enormous features and stability, so it feels a bit awkward asking for more. [Sarcasm On] Now, get going and build me up a 5.3 kernel-vm's would ya? ;) [Sarcasm Off} -- Humbly, John Thomas

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virt April 2009