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[libvirt-users] win7 instance just disappears
by Alex 30 Sep '11

30 Sep '11

Hi, I have a fedora15 box with a win7 kvm instance that has been running for some time, but lately it seems to just crash and disappear without any idea of what happened. It's never happened while I have been using it, only when the instance is idle. I usually start the instance using virt-manager, but also start it just using "virsh start mykvm" then access it using the spicec client. I can't find any logging information to indicate why this is happening or how to go about fixing it. I've tried accessing it using the normal virt-manager client as well as the spicec client an it doesn't make any difference. When it crashes, the whole process is gone. Is there something that could cause it to do this when the system is idle? I also installed the qxl video drivers (qxl-win-0.1010-20110308-d9eb3203bd) some time ago, so it could possibly be related to that. I thought it might be helpful to have a copy of the qemu XML file: <domain type='kvm'> <name>alex-win7</name> <uuid>f7decb31-88cf-d003-8716-66258550b996</uuid> <memory>3145728</memory> <currentMemory>3145728</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='pc-0.14'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <cpu match='exact'> <model>Opteron_G3</model> <vendor>AMD</vendor> <feature policy='require' name='skinit'/> <feature policy='require' name='vme'/> <feature policy='require' name='mmxext'/> <feature policy='require' name='fxsr_opt'/> <feature policy='require' name='cr8legacy'/> <feature policy='require' name='ht'/> <feature policy='require' name='3dnowprefetch'/> <feature policy='require' name='3dnowext'/> <feature policy='require' name='wdt'/> <feature policy='require' name='extapic'/> <feature policy='require' name='pdpe1gb'/> <feature policy='require' name='osvw'/> <feature policy='require' name='cmp_legacy'/> <feature policy='require' name='3dnow'/> </cpu> <clock offset='localtime'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/libvirt-images/alex-win7.img'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/libvirt-images/alex-win7a-2.img'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </controller> <interface type='bridge'> <mac address='52:54:00:6c:6c:47'/> <source bridge='br0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='spicevmc'> <target type='virtio' name='com.redhat.spice.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='mouse' bus='ps2'/> <graphics type='spice' autoport='yes'/> <sound model='ich6'> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='qxl' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> </domain> Thanks, Alex

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[libvirt-users] ANNOUNCE: Perl binding release Sys-Virt version 0.9.5
by Daniel P. Berrange 29 Sep '11

29 Sep '11

I am pleased to announce a new release of the Perl binding, Sys::Virt version 0.9.5, is now available for download: http://search.cpan.org/CPAN/authors/id/D/DA/DANBERR/Sys-Virt-0.9.5.tar.gz Changes in this release - Add all new APIs in libvirt 0.9.5 - Add missing snapshot creation/lookup methods - Fix typo in method listing snapshots - Add missing snapshot constant - Add example for save/restore usage - Re-add abort job binding accidentally deleted All historical releases and online documentation are available from the CPAN page http://search.cpan.org/dist/Sys-Virt/ There is no planned update for libvirt 0.9.6, since that did not introduce any new APIs that require work in the Perl layer. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|

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[libvirt-users] virsh cannot list broken guest.
by Magicloud Magiclouds 29 Sep '11

29 Sep '11

Hi, I am starting to learn using libvirt with kvm on CentOS 6. Just used this command to start a guest: virt-install -ntest -r1024 --vcpus=1 -c/var/lib/libvirt/images/CentOS-6.0-x86_64-netinstall.iso --os-type=linux --os-variant=rhel6 --disk vol=kvmguests/test --vnc -v --virt-type=kvm --check-cpu --prompt --arch=x86_64 Then I found out that I misconfigured vnc. And I do not know how to gracefully stop qemu. So I killed it. Then with the command, I got: ERROR Guest name 'test' is already in use. What is the name of your virtual machine? But at this time, there is nothing listed in virsh: Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit virsh # list Id Name State ---------------------------------- virsh # connect qemu:///system virsh # list Id Name State ---------------------------------- virsh # What should I do? -- 竹密岂妨流水过山高哪阻野云飞

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[libvirt-users] Snapshot Error
by huachao yao 28 Sep '11

28 Sep '11

Hey When I want to take a snapshot for a Domain by using virDomainSnapshotCreateXML. The Error as below happen: libvir: QEMU error : Requested operation is not valid: Disk '/var/lib/libvirt/images/fedora-qcow.qcow2' does not support snapshotting The snapshot Configuration is : <domainsnapshot> <description>Snapshot of OS install and updates</description> <disks> <disk name='/var/lib'> <source file='/var/lib-snapshot'/> </disk> <disk name='vdb' snapshot='no'/> </disks> </domainsnapshot> And /var/lib/libvirt/images/fedora-qcow.qcow2 is the disk for the domain (use qemu-img to create). And I had tried another Disk format (*.img), but the error still happen. how can i deal with this error?? PS:qemu version is 0.14 & libvirt version is 0.9.4. Pls help. :-(

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[libvirt-users] how to convert from xen .cfg files to libvirt xml?
by Mauro 27 Sep '11

27 Sep '11

I have a .cfg configuration file for a xen virtual machine. I need to convert it in xml format to use with libvirt. So I run virsh domxml-from-native xen-xm backupsrv.cfg but I have an error: error: Unknown failure. How can I investigate about the error?

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[libvirt-users] virsh edit problems
by Robin Lee Powell 26 Sep '11

26 Sep '11

I've got a problem where I can't access my console (well, I can', but I can't type in a password), which I don't think is a libvirt issue but any help or commentary is certainly welcome http://thread.gmane.org/gmane.comp.emulators.kvm.devel/79561 , and I'm trying to debug it by trying out different console/serial options in my .xml file, and I can't change them. What I have now: <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> No matter what I change, whether I use "virsh edit" or edit the files directly, even with libvirt off, as soon as libvirt notices (i.e. when I turn it back on) my changes get blown away and it ends up looking just like the above. Even as simple a thing as changing the port number, or removing the console, or adding a second serial... all gone. Oh, wait, that's not quite true; adding a second serial *does* work. But nothing else I've tried does. What I'm actually trying to do is copy the docs http://libvirt.org/formatdomain.html#elementsConsole more closely and specify my own source paths; I'm worried that the serial and the console are somehow ending up in the same place and maybe that's causing my problem? What I've been trying to do is something like: <serial type='pty'> <source path='/dev/pts/3'/> <target port='0'/> </serial> <console type='pty'> <source path='/dev/pts/4'/> <target port='0'/> </console> And it just won't stick. Maybe that's not even my problem, but it's not showing any errors, and it's annoying me and I'd like to understand why. -Robin

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[libvirt-users] changue bridge name, libvirt refuses to take new name
by Sergio A. Kessler 26 Sep '11

26 Sep '11

hi all, (this events ocurred before my previous mail about the uuid incident) so, I installed a vm host: rhel6 guest: centos6 network: bridge (br0, eth1 as slave) but then, I changed the name of the bridge from br0 to br1 (because br1<->eth1 seems pretty than br0<->eth1) so: - mv /etc/sysconfig/network-scripts/ifcfg-br0 /etc/sysconfig/network-scripts/ifcfg-br1 - edited /etc/sysconfig/network-scripts/ifcfg-br1 change DEVICE=br0 by DEVICE=br1 - edited /etc/sysconfig/network-scripts/ifcfg-eth1 and changed the line BRIDGE=br0 to BRIDGE=br1 - edited /etc/libvirt/qemu/rmdev2.xml and changed the line <source bridge='br0'/> to <source bridge='br1'/> - service network restart <aside note> boom! lost connection to the server I had to go to server location (a few miles) by car because the network restart didn't stop br0 because thera was no script br0 and when br1 started produced a collision </aside note> - service libvirtd restart # brctl show bridge name bridge id STP enabled interfaces br1 8000.e41f13ba6e1a no eth1 virbr0 8000.5254003a3124 yes virbr0-nic # virsh -c qemu:///system start rmdev2 error: Failed to start domain rmdev2 error: Failed to add tap interface to bridge 'br0': No such device there *nothing* 'br0' in /etc in the system (I grepped it), why is looking for br0 instead of br1 ? I ended up undefining rmdev2, installing a new guest called rmdev2 using br1, and that was when I got the error: operation failed: cannot restore domain 'rmdev2' uuid 9e9ea633-9691-f3d6-64da-ae9c8b3e5810 from a file which belongs to domain 'rmdev2' uuid 4f425d14-335b-0adc-11af-06e503c6b54d yes, I was ready to fire the house and leaving for better places... thanks, /sergio

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[libvirt-users] new guest with same name as undefined one
by Sergio A. Kessler 26 Sep '11

26 Sep '11

hi, - host: rhel6 - I created a guest rmdev2 (centos6) - undefined it - again created rmdev2 guest (centos6) now I get: [root@rmdev1 var]# virsh -c qemu:///system Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit virsh # list --all Id Name State ---------------------------------- - rmdev2 shut off virsh # start rmdev2 error: Failed to start domain rmdev2 error: operation failed: cannot restore domain 'rmdev2' uuid 9e9ea633-9691-f3d6-64da-ae9c8b3e5810 from a file which belongs to domain 'rmdev2' uuid 4f425d14-335b-0adc-11af-06e503c6b54d why ? it seems the ghost of the old guest is causing problems... all the files used by the first guest are deleted... thanks. /sergio

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[libvirt-users] ANNOUNCE: oz 0.7.0 release
by Chris Lalancette 23 Sep '11

23 Sep '11

All, I'm pleased to announce release 0.7.0 of Oz. Oz is a program for doing automated installation of guest operating systems with limited input from the user. Release 0.7.0 is a bugfix and feature release for Oz. Some of the highlights between Oz 0.6.0 and 0.7.0 are: - Ability to use the "direct initrd injection" method to install Fedora/RHEL guests. This is an internal implementation detail, but can significantly speed up installs for Fedora or RHEL guests. (thanks for the tip from Kashyap Chamarthy) - Support for Fedora-16 (thanks to Steve Dake for help in making this work) - Use the serial port to announce guest boot, rather than a network port. This makes it so we no longer have to manipulate iptables, and gets us one step closer to having Oz run as non-root - (for developers) Re-written unittests in python for speedier execution - (for developers) Additional methods in the TDL class to merge in external package lists (thanks to Ian McLeod) A tarball of this release is available, as well as packages for Fedora-14, Fedora-15, and RHEL-6. Note that to install the RHEL-6 packages, you must be running RHEL-6.1 or later. Instructions on how to get and use Oz are available at http://aeolusproject.org/oz.html If you have any questions or comments about Oz, please feel free to contact aeolus-devel(a)lists.fedorahosted.org or me (clalance(a)redhat.com) directly. Thanks to everyone who contributed to this release through bug reports, patches, and suggestions for improvement. -- Chris Lalancette

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[libvirt-users] virDomainDefineXml Issue
by Kiran Javaid 23 Sep '11

23 Sep '11

Hello Everyone, I am facing a problem in defining the xml for domain creation using libvirt. I am using Xen hypervisor. domPtr = lib.virDomainDefineXML(conPtr, domainXML); I get the following error: "libvir: Xen Daemon error : XML error: failed to parse domain description" Any suggestions are welcome. Regards.

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