March 2011 - Users - libvirt List Archives

[libvirt-users] venet as network device for openvz based VMs
by knawnd＠gmail.com 10 Mar '11

10 Mar '11

Hi! Is there any way to use venet (http://wiki.openvz.org/Venet) for openvz based VM via libvirt? Thanks! Nikolay.

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[libvirt-users] ifname in openvz container
by knawnd＠gmail.com 10 Mar '11

10 Mar '11

Hi! Is there any way to specify ethernet device name to be created inside the openvz container? I could find such info at http://libvirt.org/formatdomain.html#elementsNICS. If I do as below I get br0 as ethernet device inside VM whereas I'd like it to be eth0. $ cat ovz.xml <domain type='openvz' id='144'> <name>144</name> <uuid>0071c128-58b4-4688-be17-1e062a22b36c</uuid> <vcpu>1</vcpu> <memory>524288</memory> <os> <type>exe</type> <init>/sbin/init</init> </os> <devices> <filesystem type='template'> <source name='centos-5-x86'/> <target dir='/'/> </filesystem> <interface type='bridge'> <source bridge='br0'/> </interface> </devices> </domain> $ virsh create ovz.xml Domain 144 created from ovz.xml $ grep -i netif /etc/vz/conf/144.conf NETIF="ifname=br0,bridge=br0,mac=52:54:00:74:DD:F3,host_ifname=veth144.0,host_mac=52:54:00:06:78:76" br0 is a bridge on the server (CT0). But I would like to assign ethernet device inside VM as eth0 i.e. ifname in VM config has to be eth0. ovzkernel release is 2.6.18-194.26.1.el5.028stab081.1 OS is CentOS 5.5, libvirt/virsh version is 0.8.8. Best regards, Nikolay.

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[libvirt-users] diskspace and diskinodes tag for openvz
by knawnd＠gmail.com 09 Mar '11

09 Mar '11

Hi! as far as I understood from "xml format for openvz driver" thread available at [1] it should be possible to specify via libvirt disk size and disk inodes for openvz VM.But the following device section in VM xml description doesn't set disksize and diskinodes properly (it looks like those parameters are taken from default OpenVZ config and not as they are specified in libvirt tags): <devices> <filesystem type='template'> <source name='centos-5-x86'/> <target dir='/'/> <quota type="size" max="100000"/> <quota type="inodes" max="200000"/> </filesystem> </devices> Could anyone manage to set mentioned OpenVZ parameters properly? I am using libvirt-0.8.8, CentOS 5.5, vzctl version is 3.0.26-1. Thanks! Nikolay. [1] http://www.mail-archive.com/libvir-list@redhat.com/msg07329.html

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[libvirt-users] openvz specific values for domain/devices tag
by knawnd＠gmail.com 09 Mar '11

09 Mar '11

Hi! Could you, please, point me to where I can read about possible values for domain/devices tag in case of OpenVZ? I couldn't find such info at [1] whereas e.g. filesystem is mentioned at [2] but not at [1]. Thanks! Nikolay. [1] http://libvirt.org/formatdomain.html#elementsDevices [2] http://libvirt.org/drvopenvz.html

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[libvirt-users] Python API and events, how to deal with libvirtd stop/start
by Jasper 08 Mar '11

08 Mar '11

Hi list, I'm using the Python API to check for libvirt events. Works well, but when libvirtd is restarted, or stopped completely, the events are no longer seen. I guess this is logical, but how would I deal with this situation ? I can re-open the connection to libvirt and re-register the callbacks, but this does not work. If I call virEventLoopPureRegister() again, the app crashes with a glibc error. Any ideas ? You can reproduce this by using the event-test.py supplied with libvirt. Fire it up, restart libvirtd and see what happens when you start or stop a domain for example. Many thanks for any pointers. - Jasper

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[libvirt-users] CDROM
by Markiewicz, Patrick F (N-No Laurels) 08 Mar '11

08 Mar '11

How would I "insert" a cdrom into a running virtual machine? Patrick

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[libvirt-users] guest creation problem on pv dom0 kernel
by Tapas Mishra 06 Mar '11

06 Mar '11

I am having problem in guest creation for a pv-ops Dom0 kernel I compiled every thing from scratch.(Xen and 2.6.32.27 pv-ops dom0 kernel) on a Ubuntu Desktop 10.04 64 bit. Following is my config file for 2.6.32.27 http://pastebin.com/AvSVgVQE and the error I am getting trying to create a guest with virt-install is ERROR unable to connect to 'localhost:8000': Connection refused Traceback (most recent call last): File "/usr/bin/virt-install", line 943, in <module> main() File "/usr/bin/virt-install", line 715, in main conn = cli.getConnection(options.connect) File "/usr/lib/pymodules/python2.6/virtinst/cli.py", line 162, in getConnection conn = open_connection(connect) File "/usr/lib/pymodules/python2.6/virtinst/cli.py", line 177, in open_connection open_flags) File "/usr/lib/python2.6/dist-packages/libvirt.py", line 111, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: unable to connect to 'localhost:8000': Connection refused I am able to see xm info output but some how the guest creation is failing. I could be wrong, but this doesn't appear to be a kernel problem. Especially if xm info is working, so the xen service has started already. Maybe my libvirt version doesn't know how to use the xen 4.0 utils or the pvops kernel? I tried creating a guest by virt-manager also which when installed via apt-get install ubuntu-virt-server ubuntu-virt-mgmt installs following http://packages.ubuntu.com/lucid/<http://packages.ubuntu.com/lucid/libvirt-bin> ubuntu-virt-server http://packages.ubuntu.com/lucid/<http://packages.ubuntu.com/lucid/libvirt-bin> ubuntu-virt-mgmt Now when I open virt-manager the option to create guest by installing from a ISO present on hard disk locally or even PXE are greyed out.virt-manager version is 0.8.2 virsh version Compiled against library: libvir 0.7.5 Using library: libvir 0.7.5 Using API: QEMU 0.7.5 Running hypervisor: QEMU 0.12.3 This above output is wrong as instead of QEMU it should show Xen. I installed it via apt-get install libvirt-bin when you do an apt-get install libvirt-bin python-libvirt then it installs following http://packages.ubuntu.com/lucid/libvirt-bin http://packages.ubuntu.com/lucid/python-libvirt It appears it is a problem with libvirt-bin and it does not know how to create a pv-ops Dom0 guest. The machine where I am trying all this is a non VT 64 bit machine and trying to create 32 bit guests on it. Can some one confirm me the same or tell what did I missed in above? -- http://mightydreams.blogspot.com

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[libvirt-users] Connecting to Standalone KVM
by Markiewicz, Patrick F (N-No Laurels) 04 Mar '11

04 Mar '11

Hi, Can virsh be used to connect to a standalone KVM? I.e. I started a KVM from the command line, and I wondered how to connect to it. Virsh list shows no VMs. Thanks. Patrick

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[libvirt-users] wrong domain type for openvz
by knawnd＠gmail.com 04 Mar '11

04 Mar '11

Hi! Is there any progress on issue mentioned in [1]? I mean the issue when xml file has VM type as openvz but 'virsh dumpxml <VMID>' returns domain type qemu. I still have issue in libvirt-0.8.8. BR, Nikolay. [1] http://osdir.com/ml/libvir-list/2009-07/msg00635.html

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[libvirt-users] /etc/vz/vznetctl.conf has to be /etc/vz/vznet.conf
by knawnd＠gmail.com 04 Mar '11

04 Mar '11

Hi! In [1] it's written that "Then a generic configuration file /etc/vz/vznetctl.conf must be created containing [...]" whereas it has to be /etc/vz/vznet.conf since /usr/sbin/vznetcfg script has the following line VZNETCFG='/etc/vz/vznet.conf' vzctl version is 3.0.26-1. Best regards, Nikolay. [1] http://libvirt.org/drvopenvz.html

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