Re: [libvirt] [libvirt-users] libvirt & virtio_net - host.freeze@reset.domain

On Tue, Jul 02, 2013 at 01:25:21PM +0200, poma wrote: > Hello people, > > libvirtd (libvirt) 1.0.5.2 > virsh 1.0.5.2 > virt-manager 0.10.0 > > Host: > Linux localhost 3.9.8-300.fc19.x86_64 #1 SMP Thu Jun 27 19:24:23 UTC > 2013 x86_64 x86_64 x86_64 GNU/Linux > Guest1: > Linux localhost 3.9.8-300.fc19.i686.PAE #1 SMP Thu Jun 27 19:29:30 UTC > 2013 i686 (none) > Guest2: > Linux localhost 3.9.8-300.fc19.x86_64 #1 SMP Thu Jun 27 19:24:23 UTC > 2013 x86_64 x86_64 x86_64 GNU/Linux > > > Virtual NIC - source & model: > macvtap/NAT/bridge & virtio(virtio_net) > > Host freeze at "virsh reset <domain>" or "virt-manager - Force Reset" > Need kernel.sysrq or power reset. I don't believe this is a libvirt issue - the 'virsh reset' command will issue the 'system_reset' QEMU monitor command. This in turn does an immediate reset of the guest CPUs/machine. Even if QEMU is doing the wrong thing, the kernel should obviously never freeze/crash in this way - it should be robust against a malicious QEMU process. You should probably send this message to the main QEMU and/or KVM mailing lists so that it comes to the attention of people who are more familiar with QEMU + virtio-net Regards, Daniel