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[libvirt-users] getting live migration to work..
by Jelle de Jong 24 May '11

24 May '11

Hello everybody, I am trying to get migration to work with the pacemaker VirtualDomain RA. However I hit some problems and went back to the basic. I also can't get virsh to do the migration so I am kind of stuck and can use some advice. # connection and general info and the migration tests http://paste.debian.net/117736/ # capabilities http://paste.debian.net/117745/ Thanks in advance, Kind regards, Jelle de Jong

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[libvirt-users] Improving video for Windows7 kvm guest on fc14
by Alex 23 May '11

23 May '11

Hi, I have an existing windows7 x86_64 kvm guest running on fedora14 x86_64 with a Radeon HD5700 at 1680x1050, and would like to improve the resolution of the Windows guest. How can I change the Windows driver to something more capable than "standard vga"? It currently reports there is only 16MB of RAM at available at 1440x900. How can I increase this? I've tried using virsh or editing the xml directly, but it doesn't seem to be reflected in the guest. Some of the configuration options I've read in the documentation don't work with fedora14 and virt-manager, such as the acceleration options. This is my current configuration: <video> <model type='vmvga' vram='192000' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> How can I more effectively use the video card's capabilities in the Windows guest? Thanks, Alex

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[libvirt-users] Migrate doesn't support copy-storage-all
by Abhishek Gupta 21 May '11

21 May '11

While using --copy-storage-all option while doing live migration I am getting following error : error: command 'migrate' doesn't support option --copy-storate-all I am using kvm hypervisor. Does that mean kvm doesn't support the option or libvirt doesn't provide support for the same with kvm as the hypervisor? -- Abhishek Student, IIT Delhi

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[libvirt-users] Blank console and no boot
by Francesc Guasch 19 May '11

19 May '11

Hi. I was cloning a domain and now I can't boot the original nor the clone domain. Currently when I start one of those domains I can see only a blank screen. I am not sure what went wrong cloning. I was trying to use kpart to mount the new image and change info in the filesystem like hostname, ip and so. Anyway when I start the new or old domain: # virsh start --console thedomain Domain thedomain started Connected to domain thedomain Escape character is ^] And that's all.I see nothing with libvirt graphical console, nothing in the logs but this, that I guess it's the usual startup info: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name .... ... This is qemu-kvm 0.12.5+noroms-0ubuntu7.1 on ubuntu server 10. Any hints so I can check what could have go wrong ? I am concerned about not being able to see what is going on. I guess there must be a way to start the domains and watch the boot process somehow. Is this possible ? thank you for you time

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[libvirt-users] Trying to re-compile libvirt package on Ubuntu Lucid
by Lars Nordin 18 May '11

18 May '11

I'm trying to rebuild Ubuntu's libvirt packages to turn on ESX support. I've downloaded the Ubuntu source package for Lucid (updated Lucid package) dget -u http://archive.ubuntu.com/ubuntu/pool/main/libv/libvirt/libvirt_0.7.5-5ubun… I try and re-compile dpkg-buildpackage -rfakeroot -b DEB_BUILD_OPTIONS="--with-esx" fakeroot debian/rules binary and I get this error: ... testing with corrupted config: log_level Skipping test (due to Ubuntu buildd FTBFS): running libvirtd with a valid config file (2 seconds) FAIL: daemon-conf PASS: define-dev-segfault ... ==================== 1 of 37 tests failed ==================== make[4]: *** [check-TESTS] Error 1 make[4]: Leaving directory `/exp/h1/staff/lnordin/libvirt-pkg/libvirt-0.7.5/tests' make[3]: *** [check-am] Error 2 make[3]: Leaving directory `/exp/h1/staff/lnordin/libvirt-pkg/libvirt-0.7.5/tests' make[2]: *** [check-recursive] Error 1 make[2]: Leaving directory `/exp/h1/staff/lnordin/libvirt-pkg/libvirt-0.7.5/tests' make[1]: *** [check-recursive] Error 1 make[1]: Leaving directory `/exp/h1/staff/lnordin/libvirt-pkg/libvirt-0.7.5' make: *** [debian/stamp-makefile-check] Error 2 Anyone gone through this exercise before and would know how to get the packages re-built?

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[libvirt-users] Howto set the option script=no for a tap device in the xml file
by Christian Spann 18 May '11

18 May '11

Hello, I am trying to run a virtual machine with qemu-kvm and libvirt as a user. In order to start the virtual machine I setup a tap device manually, add it to the bridge and activate it via ifconfig. But I cannot tell libvirt to not try to add the definded tap device to the bridge by itself. It always fails telling me it cannot add tap0 to br0. Thats the xml snippet for defining the network: <interface type='bridge'> <mac address='54:52:00:38:75:dd'/> <source bridge='br0'/> <target dev='tap0'/> <model type='virtio'/> </interface> Here I would like do define "script=no" to get an output like: -net tap,vlan=0,ifname=tap0,script=no when libvirt launches the vm. Regards, Christian -- Christian Spann - http://www-vs.informatik.uni-ulm.de/~spann

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[libvirt-users] (no subject)
by Abhishek Gupta 17 May '11

17 May '11

Hi, I am using libvirt and virsh for my application. I am trying to manage snapshots for my infrastructure. All virsh commands are working fine like snapshot-create, delete, list, revert, current. But when I try to do the same using libvirt, I get out of memory error. Here are the commands that i execute on my host in a python shell... import libvirt conn = libvirt.open("qemu:///system") dom = conn.lookupByName("vmtest") *snap = dom.snapshotCreateXML(None,0);* The error is as follows libvir: Remote error : out of memory Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python2.6/dist-packages/libvirt.py", line 669, in snapshotCreateXML if ret is None:raise libvirtError('virDomainSnapshotCreateXML() failed', dom=self) libvirt.libvirtError: out of memory

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[libvirt-users] Looking for a contact
by Dale Amon 17 May '11

17 May '11

I'm curious if there is anyone here from linode.

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[libvirt-users] libvirt connection timeout
by Antoine COETSIER 16 May '11

16 May '11

Hi all, I would like to set a short connection timeout (only some seconds) when using libvirt in my Python program instead of the long default one. I found the C function: virEventAddTimeoutFunc() in the C libvirt API here: http://libvirt.org/html/libvirt-libvirt.html#virEventAddTimeoutFunc and eventInvokeTimeoutCallback(timer, callback, opaque) in libvirt.py around the line#150 but I do not know how to use it. I did not find any example on the net. I tried this but I get a segmentation fault: :-( import libvirt def timeout_cb_d(): print 'Timeout !' try: # try to set the libvirt timeout to 2 seconds: t = libvirt.eventInvokeTimeoutCallback(2, timeout_cb_d, "from dom0_class") except: ... Does anyone can give me a working example please? Antoine Coetsier

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[libvirt-users] (no subject)
by Abhishek Gupta 16 May '11

16 May '11

Hello, In the documentation section of Python API Website it is written that the generation of python API and documentation is automated using generator.py file. This should produce the necessary files alongwith the documentation in libvirtclass.txt which should be present in docs or python folder. I executed generator.py file but was not able to find the libvirtclass.txt file to get the documentation. The easiest way I could think of was to manually browse the libvirt.py file for the available functions. Is there any other way of doing the same? -- Abhishek

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