Re: [CentOS-virt] Problem with Centos 6.2 KVM
Any other ideas? TIA Is your CPU VT-enabled? Is it capable and enabled in BIOS? Intel: cat /proc/cpuinfo | grep vmx AMD: cat /proc/cpuinfo | grep svm ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] No module named cygvirtmod
On Thu, 2012-01-12 at 14:24 +, Lars Hecking wrote: I'm trying to set up a xen guest on a machine that already has a few others running (not set up by me). It fails with the following error: + virt-install -r 512 -n host5 -f /dev/vol0/lvol5 --nographics -p --os-type=linux --os-variant=rhel5 --accelerate -l http://bla -x ks=http://bla/ks.cfg -m MA:CA:DD:RE:SS Traceback (most recent call last): File /usr/bin/virt-install, line 31, in ? import libvirt File /usr/lib64/python2.4/site-packages/libvirt.py, line 12, in ? import cygvirtmod as libvirtmod ImportError: No module named cygvirtmod Do you have the libvirt-python package installed? Also check for the virt-viewer package (which helps with a lot of virt tool errors). Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Bonds, VLANs, and Bridges on Centos 5.6
On Fri, 2011-11-18 at 17:56 -0500, Jason Nagashima wrote: Running on Centos 5.6 with KVM... I was wondering if anyone had any luck configuring the NICs where eth0 and eth1 are bonded together with vlan support to a bridge? I noticed some threads show this as a possibility (http://lists.centos.org/pipermail/centos-virt/2009-November/001417.html), but haven't had any luck implementing it. There also seems to be a bug with 5.6 (http://bugs.centos.org/view.php?id=4801), but that post died the day it was created it. Any advice/working examples would be greatly appreciated. Hi Jason, I have had luck doing this with Xen, where I create bond0 on a trunk interface and have xen bring it up as xenbr0 with pbond0 in the back end. You should be able to do roughly the same by creating a bridge interface in /etc/sysconfig/network-scripts referencing bond0 as a member. After that you should be able to run a script to create VLAN bridges like the following: #!/bin/bash /sbin/modprobe 8021q # Add your vlans here that you want with the numbers separated by a # space VLANS=5 10 15 20 # This should work with the bonding interface TRUNKINT=bond0 for VLAN in $VLANS do vconfig add $TRUNKINT $VLAN brctl add br$VLAN brctl addif br$VLAN $TRUNKINT.$VLAN ifconfig $TRUNKINT.$VLAN up ifconfig br$VLAN up done I have done this with Xen on 5.5, 5.6 and 5.7... but it should work for KVM. If you create the standard bridge interface br0 using just bond0 that will get you a trunk on whatever the native vlan is for that trunk. Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Simulate Network Cable Disconnect
On Wed, 2010-05-12 at 10:09 -0400, Kanwar Ranbir Sandhu wrote: On Tue, 2010-05-04 at 12:28 -0400, Tait Clarridge wrote: I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment. Couldn't you just do a ifdown ethX in the KVM itself? One of the bonded NICs will go down, and the kernel should report it as such. Regards, Ranbir I did try that but it didn't fail over, actually I think I did ifconfig ethX down instead of ifdown ethX. I will try again when I get some time, thanks for the pointer! :) Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Simulate Network Cable Disconnect
Hello All, I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment. Basically I have the VM running on a bridged network which is also tied into GNS3 simulating a small-scale version of the production environment. I have tried bringing down the vnetX interface and the actual virtual network itself (virbrX) with no luck. Has anyone had to do this before/maybe knows some tips? If more info is required about my setup, I can give it. Thanks! Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Fedora 12 domU will not boot kernel
I think 5.4 version of python-virtinst added some fixes aswell.. so maybe you need to upgrade to that for F12 installation to work. Also please try running xm console for the guest and see what it does and where it crashes.. If I do xm create -c f12domU.cfg it says Starting Domain f12domU and then brings me back to the command prompt on dom0. Thanks for the replies Pasi, I will try and get some time to bring this host out of production to perform the upgrade. - Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Fedora 12 domU will not boot kernel
On Fri, 2010-01-08 at 09:38 -0500, Tait Clarridge wrote: I think 5.4 version of python-virtinst added some fixes aswell.. so maybe you need to upgrade to that for F12 installation to work. Also please try running xm console for the guest and see what it does and where it crashes.. If I do xm create -c f12domU.cfg it says Starting Domain f12domU and then brings me back to the command prompt on dom0. Just do add something, this led me to believe there was an incompatible kernel, and have tried both i686 and x86_64 kernels. Thanks for the replies Pasi, I will try and get some time to bring this host out of production to perform the upgrade. - Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Fedora 12 domU will not boot kernel
I think 5.4 added some hypervisor/dom0 side fixes, that might be needed for F12 guests. I'm not totally sure. You can go through redhat bugzillas if you want :) I will take a look into the changes, thanks. I've been successfully running both 32bit and 64bit Fedora 12 domUs/guests on EL 5.4 dom0. What's the actual problem? Use virt-install or virt-manager to install new F12 guest. Btw what's your hardware? -- Pasi To install the guest I mounted the DVD on a remote webserver and exported via HTTP, from dom0 I grabbed the pxeboot kernel and ramdisk and passed those to the domU to start the install. When using the F12 kernel/ramdisk the domU doesn't cause any errors (logs are clean as well) but it doesn't start. It goes up and down twice in very quick succession and the logs tell me that it is rebooting too quickly and therefore it stops attempting to boot the domU. When using the F11 install kernel/ramdisk the domU boots and installs just fine. To get it to F12 I tried preupgrade but on rebooting when I select the preupgrade selection from pygrub it has the same behaviour as the initial F12 install. Same thing happens when I do the upgrade from yum and try to boot the new kernel. The machine right now is running all F12 software except for the kernel. When booting any F12 kernel there are no error messages in either domU (obviously) or dom0. The hardware is a SunFire x4140 with 64GB ram and dual quad core Opterons. I can get more specific if you would like, but xen has worked perfectly on these machines with every other type of OS except F12. I will try and get some downtime for the box so I can upgrade if the conclusion is that some dom0/hypervisor fixes in the newer kernel/xen packages will solve the problem. I appreciate the help and quick responses so far :) Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Fedora 12 domU will not boot kernel
Hello Everyone, I have been trying to get a Fedora 12 domU to boot for the better part of the afternoon and haven't had success booting any F12 kernel in Xen. I can get Fedora 11 installed no problem, tried to do a preupgrade but the when booting the preupgrade kernel through grub (or even from outside the domU) the domU reboots very quickly and ultimately crashes. As far as I saw in the qemu-dm-xxx.log, xend.log, and xend-debug.log there are no messages informing me of what went wrong. I am using CentOS 5.3 with the 2.6.18-92.1.22.el5xen kernel. I am unable to update the kernel at this time as new drivers cause major disk controller issues. If it as simple as a kernel update I will try again, but as of right now I am stumped so I asking for a little help! Has anyone successfully gotten F12 set as a domU using the regular CentOS xen and kernel-xen packages? xen-3.0.3-80.el5_3.3 kernel-xen-2.6.18-92.1.22.el5 Best, Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] virt-install failed while install windows2003 guest
On Tue, 2009-12-08 at 12:41 +0100, Markus Falb wrote: On 8 Dec 2009, at 09:58, rewing wrote: libvirtError: internal error unable to start guest: qemu: could not open disk image /vm/win2k3.img Do you have selinux enabled ? As far as I know the location for images is restricted to /var/lib/libvirt/images by default. -- Or does the actual disk image exist at /vm/win2k3.img with r/w access to whoever is running the virt-install command? Does the /vm directory exist and does the user have permissions to access it? signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Live migration and DRBD
On Mon, 2009-11-30 at 13:53 -0200, Gilberto Nunes wrote: Hi folks I deploy a two Dell PowerEdge T300 to test Virtualization with kvm+drbd+heartbaet. The KVM drbd and heartbeat work properly. However, I have doubt!! When the primary node has down, the secondary node start the VM that has original running on primary node... So, this required a full stop of hole system... This is not we wish here... Is there something way to live migrate VM from primary node that was shutdown I have no idea how to make this stuff working... Thanks for any help Currently there is work being done on a project for Xen called Remus. I am not sure about KVM but Remus is still in development and although it has been merged into the xen-unstable repository, it isn't completely ready yet (although the developers are working very hard). Basically it performs the first part of a live migration and if connection is lost, it will jump the virtual machine over to the secondary host. http://nss.cs.ubc.ca/remus/ It appears that Red Hat is including high availability for KVM in their Red Hat Enterprise Virtualization Manager for Servers. Not sure if this is going to make it to CentOS, can someone confirm/deny? signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] VLAN bridge config for xen - Was: Controlling allocation of ethernet devices and KVM
On Sat, 2009-11-28 at 00:50 +0200, Manuel Wolfshant wrote: On 11/28/2009 12:43 AM, Tait Clarridge wrote: The init scripts support VLANs and bridges out of the box. Adding more scripts is not necessary. Interesting, XEN specific scripts? Or CentOS scripts. Neither. When using centos, vlan related modules are loaded automatically after specifying VLAN=YES in sysconfig/network. And vlan/bridge interfaces are configured exactly the same as normal interfaces Interesting, thanks for the info. Can I specify which VLANs it is going to configure and bridge? signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] VLAN bridge config for xen - Was: Controlling allocation of ethernet devices and KVM
but as you have said, to each their own. you prefer slackware, I prefer centos. I never said I use Slackware... anyways. It is nice when rolling out dozens of machines quickly and not having to worry about all the VLAN and bridge init scripts. signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Slightly OT: GPLPV driver selection.
On Wed, 2009-09-30 at 11:19 -0400, Centos wrote:
I'm in the middle of a (re-)install on a domU and looking for quick
replies as too which GPLPV to use on a Windows 2008 Server install.
Windows 32bit
Xen/Centos 64bit (x86_64)
The question is regarding whether the driver to load into Windows is for
itself (32bit) or the underlying hypervisor (x86_64) as in:
There is now one download per platform/architecture, named as follows:
* gplpv_chk/fre_platform_arch_version.msi
* chk is a 'checked' build which contains debug info (please use
these if you want any assistance in fixing bugs)
* fre is a 'free' build which contains no debug info
* platform is 'wxp' for XP, 'wnet' for 2003, and 'wlh' for Vista/2008
* arch is 'x86' for 32 bit and 'AMD64' for 64 bits
Is the architecture ('arch') x86 (for the Windows domU 32bit
architecture) or x86_64 (for the arch version of Xen running)?
I'm having a gray moment.
It happens.
The arch should be for the domU as it has to install drivers in the domU
only, not dom0.
___
CentOS-virt mailing list
CentOS-virt@centos.org
http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Centos virsh - add a physical device
Native config: cat win2k8.cfg name = win2k8-hvm uuid = c53ac13f-d32f-9934-8c0b-a8728fb52f19 maxmem = 1024 memory = 1024 vcpus = 1 builder = hvm kernel = /usr/lib/xen/boot/hvmloader boot = c If you want it to boot from anything in the CDROM device, change this to read: boot = dc pae = 1 acpi = 1 apic = 1 localtime = 0 on_poweroff = destroy on_reboot = restart on_crash = restart device_model = /usr/lib/xen/bin/qemu-dm vfb = [ type=vnc,vncunused=1,keymap=en-us ] disk = [ phy:/dev/vol1/win2k8,hda,w, phy:/dev/cdrom,hdc:cdrom,r ] Alright, if I am not mistaken your system already has a CDROM setup. It is pointing to the physical interface /dev/cdrom. I may be confusing your question, but did you want to add another one? If the current one isn't working you will have to figure out what the CDROM device name is (/dev/sr0 is also an option) but make sure you have modified the boot= line as I did above. You should also be able to add an ISO image to act as the CDROM (all on one line): disk = [ phy:/dev/vol1/win2k8,hda,w,file:/path/to/file.iso,hdc:cdrom,r] vif = [ mac=00:16:36:2a:e4:15,bridge=eth0,script=vif-bridge,vifname=vif50.0 ] parallel = none serial = pty Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Centos virsh - add a physical device
On Mon, 2009-09-28 at 08:05 +0200, f...@ll wrote: Hi, If I create a guest which uses (hvm) can I add access to physical device like cdrom? Regards, f...@ll Yes, you are able to add a CDROM device to your guest. You can add either a physical drive or an ISO image. Are you using virt-manager or just config files at the command line? Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Centos virsh - add a physical device
On Mon, 2009-09-28 at 22:17 +0200, f...@ll wrote: Tait Clarridge pisze: On Mon, 2009-09-28 at 08:05 +0200, f...@ll wrote: Hi, If I create a guest which uses (hvm) can I add access to physical device like cdrom? Regards, f...@ll Yes, you are able to add a CDROM device to your guest. You can add either a physical drive or an ISO image. Are you using virt-manager or just config files at the command line? Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt Hi, I using only a comman line, my centos server have only text console without a X server. I used a virsh. f...@ll Can you post the config file for the guest? ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
