Hi all, I can reproduce this issue on lucid x86_64.
Environment: Host: Ubuntu Lucid x86_64 desktop with kernel "2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux" ii kvm 1:84+dfsg-0ubuntu16+0.14.0+noroms+0ubuntu4.4 ii libvirt-bin 0.8.8-1ubuntu6.5 ii libvirt0 0.8.8-1ubuntu6.5 ii libvirtodbc0 6.1.2+dfsg1-1ubuntu4 ii python-libvirt 0.8.8-1ubuntu6.5 ii qemu 0.14.0+noroms-0ubuntu4.4 ii qemu-common 0.14.0+noroms-0ubuntu4.4 ii qemu-kvm 0.14.0+noroms-0ubuntu4.4 Guest: Ubuntu Lucid x86_64 server Steps: 1. run "virt-manager", 2. start a guest, 3. click "Save" in "Virtual Machine" menu, and wait a progress dialog done, 4. click "Restore" in "Virtual Machine" menu Expect result: VM restored Actually: Show a error dialog with following information: Error restoring domain: operation failed: could not query memory balloon allocation Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/engine.py", line 956, in asyncfunc vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 1049, in startup self._update_status() File "/usr/share/virt-manager/virtManager/domain.py", line 1274, in _update_status info = self.get_info() File "/usr/share/virt-manager/virtManager/domain.py", line 967, in get_info return self._backend.info() File "/usr/lib/python2.7/dist-packages/libvirt.py", line 823, in info if ret is None: raise libvirtError ('virDomainGetInfo() failed', dom=self) libvirtError: operation failed: could not query memory balloon allocation -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/411417 Title: virsh restore causes kernel panic in guest. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/411417/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs