From mboxrd@z Thu Jan 1 00:00:00 1970 From: poma Subject: Re: [libvirt-users] libvirt & virtio_net - host.freeze@reset.domain Date: Thu, 04 Jul 2013 11:14:52 +0200 Message-ID: <51D53D0C.4050404@gmail.com> References: <51D2B8A1.9050002@gmail.com> <20130703114327.GW2778@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: libvir-list@redhat.com, netdev@vger.kernel.org, libvirt-users@redhat.com, "qemu-devel@nongnu.org" , kvm-devel , Mateusz Marzantowicz , Virt-tools List To: "Daniel P. Berrange" Return-path: Received: from mail-bk0-f41.google.com ([209.85.214.41]:52613 "EHLO mail-bk0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933532Ab3GDJO4 (ORCPT ); Thu, 4 Jul 2013 05:14:56 -0400 In-Reply-To: <20130703114327.GW2778@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: On 03.07.2013 13:43, Daniel P. Berrange wrote: > 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 " 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 > Thanks for your response. Mateusz hit the same issue[1] as well. OK, here we go. poma [1] https://lists.fedoraproject.org/pipermail/users/2013-July/436984.html