From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LETf7-0000R7-3z for qemu-devel@nongnu.org; Sun, 21 Dec 2008 14:08:25 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LETf5-0000Q7-Cj for qemu-devel@nongnu.org; Sun, 21 Dec 2008 14:08:24 -0500 Received: from [199.232.76.173] (port=49511 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LETf5-0000Pj-58 for qemu-devel@nongnu.org; Sun, 21 Dec 2008 14:08:23 -0500 Received: from mail-bw0-f12.google.com ([209.85.218.12]:53909) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LETf4-00069z-H2 for qemu-devel@nongnu.org; Sun, 21 Dec 2008 14:08:22 -0500 Received: by bwz5 with SMTP id 5so2196736bwz.10 for ; Sun, 21 Dec 2008 11:08:20 -0800 (PST) Message-ID: Date: Sun, 21 Dec 2008 13:08:20 -0600 From: "Anthony Liguori" Subject: Re: [Qemu-devel] Problem with virtio net in guest In-Reply-To: <494E6D72.5090406@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <494E6D72.5090406@redhat.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dlaor@redhat.com, qemu-devel@nongnu.org On Sun, Dec 21, 2008 at 10:23 AM, Dor Laor wrote: > > nuitari-qemu@nuitari.net wrote: >> >> I use virtio_net in guest and use kvm-81 >> After a migration none of the network cards in the guest work. >> >> If I check with dmesg, I see bad_partial_csum all over the place. > > This is because there is no live migration (dirty bit tracking) in virtio yet. There is now, actually. I suspect save/restore with GSO is broken or not resilient enough to deal with two hosts without agreeable GSO support. Regards, Anthony Liguori >> >> If I use e1000 for the guest NICs, everything works. >> >> > > >