- Users - libvirt List Archives

[libvirt-users] How to get supported feature list in driver
by Ryota Ozaki 21 Jun '10

21 Jun '10

Hello Is there an easy way to get supported feature (API) list in each driver? The function would be to return a list which describes which APIs are supported and which APIs are not. Thanks in advance ozaki-r

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[libvirt-users] libvirtError: poll on socket failed: Interrupted system call
by jeremy avnet 19 Jun '10

19 Jun '10

Hello. I just upgraded from libvirt 0.7.0 to 0.7.5 in Ubuntu Lucid and now my application will get into a hung state. I have to kill it at which point I get the following error from the Python bindings: Traceback (most recent call last): File "/usr/local/app/vm.py", line 246, in launch vm.create() File "/usr/lib/python2.6/dist-packages/libvirt.py", line 300, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: poll on socket failed: Interrupted system call Some searches turned up a patch involving signals sent by ncurses apps resizing, but this is not an ncurses app. It's a daemonized Python Twisted application. Unfortunately, this problem is making it so the application hangs indefinitely until we kill it and start it again. Any suggestions as to what might be causing this? Thanks! .:. jeremy

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[libvirt-users] java.lang.UnsatisfiedLinkError: jnidispatch (/com/sun/jna/linux-i386/libjnidispatch.so) not found in resource path
by Rafael Braga 18 Jun '10

18 Jun '10

Hi everybody, I'm trying to run the sample of the site, but is not working. In fact, already includes jna.jar in my class path, see. What can it be? -- Rafael Braga

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[libvirt-users] Snapshots - can't take a snapshot with running VM
by Julian Robbins 17 Jun '10

17 Jun '10

Hi I'm quite new to KVM/libvirt0 so hope you can help I'm using Ubuntu Lucid 10.04 and libvirt0 0.8.1 When I try a :- snapshot create vm_name I get an error, ie 'error -5 while writing' Googling doesnt bring anything up. Taking snapshots of a vm when it isnt running works fine. Can I really only create snapshots of a vm when it isnt running ? -- Kind regards Julian

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[libvirt-users] cannot acquire state change lock
by Julian Robbins 17 Jun '10

17 Jun '10

Hi I keep getting libvirtError: Timed out during operation: cannot acquire state change lock errors - what does this mean exactly ? Using Ubuntu 64 bit 10.04 host and guest -- Kind regards Julian Robbins

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[libvirt-users] libvirt API hangs
by Zhang Qian 17 Jun '10

17 Jun '10

Hi, I have someVMs in my KVM hosts(RHEL 5.5), I found when run "virsh save <domain> <file>" to save a VM, the command "virsh dominfo <domain>" will hang until the save command finishes. Is this libvirt's behavior? Or KVM/QEMU's? This may impact the performance. Thanks, Qian

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[libvirt-users] Bridge with macvtap problem
by Eduardo 16 Jun '10

16 Jun '10

Hi friends! I'm using libvirt 0.8.1 with qemu-kvm 0.12.4 on Linux 2.6.34. At the moment there are 2 virtual machines running inside that host without problem. They are using the macvtap feature for networking share. But I can't do ping from the host to the guest, but I need this. And whatever communication between them. Ping with other host is normal. Below follows the xml domain definition of one guest: <domain type='kvm' id='2'> <name>vox2</name> <uuid>2e143f6e-5506-8073-c5fc-3ea92fc2b579</uuid> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <disk type='file' device='disk'> <source file='/virtual/vox2.qcow2'/> <target dev='sda' bus='scsi'/> <alias name='scsi0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <controller type='scsi' index='0'> <alias name='scsi0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> <interface type='direct'> <mac address='52:54:00:2f:fe:3d'/> <source dev='eth0' mode='bridge'/> <target dev='macvtap1'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </interface> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5901' autoport='no' keymap='pt-br'/> <video> <model type='vmvga' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> </devices> </domain> P.S.: The default network of libvirt is disabled. -- *Eduardo Ramos* Asterisk Manager Linux User www.freedominterface.org +55 12 81129581 exten=>eduardo,1,hangup()

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[libvirt-users] howto search this mailing list archive?
by Julian Robbins 16 Jun '10

16 Jun '10

Another quickie I've long and hard (honest !), but can't find a way to search this ml's archives. How do you do this ? -- Kind regards Julian Robbins

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[libvirt-users] apparmor and kvm/libvirt
by Julian Robbins 16 Jun '10

16 Jun '10

Hi After kindly answering my question on snapshots not working whilst vm is on, i find that apparmor is still disturbing the process where snapshots can get written But although i should just be able to disable apparmor for my vm in virt-manager, whilst vm is off; that when i start the vm the apparmor settings go back to being enabled and set to dynamic This is stopping me from taking snapshots again whilst vm is on. :-( I have also tried disabling the apparmor profile for libvirt on the host but this appears to have had no effect. I know very little about appamor and it is not particularly important to be used in this case. I am using Ubuntu 10.04 LTS on both host and guest 64 bit. -- Kind regards Julian Robbins

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[libvirt-users] SCM_RIGHTS file error when attaching device?
by steven765＠yahoo.com 16 Jun '10

16 Jun '10

So I just upgraded to 0.8.1-1 and virt-manager 8.4 when i try to attach my network card that's been perfectly fine in the past i now get... virsh # attach-device gnome /etc/libvirt/qemu/nic.xml error: Failed to attach device from /etc/libvirt/qemu/nic.xml error: internal error unable to send TAP file handle: No file descriptor supplied via SCM_RIGHTS Any thoughts?

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