Public bug reported: The virtio networking is implemented by the following libvirt XML configuration snippet: <interface type='bridge'> <source bridge='BRIDGEDEV'/> <mac address='PRIVMACADDR'/> <model type='virtio'/> </interface>
The disk attachment is implemented by: <disk type='block'><driver name='phy'/><source dev='%s'/><target dev='%s' bus='virtio'/></disk> When virtio networking is enabled, attaching a virtio disk will render the networking dysfunctional. Nothing in the kernel log shows anything useful. The VM's network is simply down. At this point, I have no idea what happened. I was doing experiments on Lucid using kernel 2.6.32-11-server. I tried both 2.6.28-11-generic and 2.6.32-11-generic kernels for the guest VM. Both have the same issue. However, I tried the problematic combination: virtio net + virtio disk attachment (which causes network failure on Lucid) on Karmic. And the problem is GONE. On Karmic, I'm using kvm version 1:84+dfsg- 0ubuntu16+0.11.0+0ubuntu6.3 and kernel 2.6.31-16-generic for the host, kernel 2.6.28-11-generic for guest. So it seems like the virtio functionality is somehow broken in Lucid. ** Affects: eucalyptus (Ubuntu) Importance: Undecided Assignee: Serge Hallyn (serge-hallyn) Status: New ** Changed in: eucalyptus (Ubuntu) Assignee: (unassigned) => Serge Hallyn (serge-hallyn) -- Virtio network stops working after dynamic virtio disk attachment https://bugs.launchpad.net/bugs/602060 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs