From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Besser Subject: Re: Loss of network connectivity with high load Date: Tue, 22 Jun 2010 08:32:32 +0200 Message-ID: References: <20100615210038.GA28074@defiant.freesoftware> <4C18DC5E.6030909@redhat.com> <20100616181007.GA1666@defiant.freesoftware> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit To: kvm@vger.kernel.org Return-path: Received: from lo.gmane.org ([80.91.229.12]:60030 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753129Ab0FVGco (ORCPT ); Tue, 22 Jun 2010 02:32:44 -0400 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OQx2I-0007Ac-L7 for kvm@vger.kernel.org; Tue, 22 Jun 2010 08:32:42 +0200 Received: from nat.rz.uni-karlsruhe.de ([129.13.72.198]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 22 Jun 2010 08:32:42 +0200 Received: from thomas.besser by nat.rz.uni-karlsruhe.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 22 Jun 2010 08:32:42 +0200 Sender: kvm-owner@vger.kernel.org List-ID: Hi all, Daniel Bareiro wrote: > On Wednesday, 16 June 2010 17:14:54 +0300, > Avi Kivity wrote: >>> I'm using Linux 2.6.31.13 compiled with the kernel.org source code on >>> KVM host with Debian GNU/Linux Lenny amd64. Also I'm using Debian >>> GNU/Linux Lenny amd64 virtual machine with kernel 2.6.26-2 from >>> Debian repositories. I'm using qemu-kvm 0.12.3. > >> 2.6.26 is really old. Can you try a new kernel in the guest? Recent >> kernels had many virtio fixes. > > I tested with Linux 2.6.32-bpo.5-amd64 from backports repositories and > so far I didn't have a problem. If the problem persists, I will comment > to the list. I think we have the same problem here: after about 3 GB of transfered data with rsync, network (virtio) in the guest stops working (restart of network solves the network stop). Both host and guest Debian Lenny with 2.6.32. qemu-kvm is version 0.12.4. Will try 2.6.34 in guest and report, if the problem still exists. Guest starting options: /usr/bin/kvm -name sysimager -vnc :35 -usbdevice tablet -net nic,vlan=0,model=virtio,macaddr=00:08:15:00:09:95 -net tap,vlan=0,ifname=tap35,script=no -m 512 -monitor unix:/var/run/kvm/sysimager,server,nowait -drive index=0,media=disk,file=/vm/sysimager/sysimager.raw,if=virtio,boot=on -drive index=1,media=disk,file=/vm/sysimager/daten.raw,if=virtio -daemonize -vga std -k de -pidfile /var/run/kvm/sysimager.pid -tdf No error messages in /var/log/syslog, but via vnc on console. Any hint how to copy and paste via vncviewer the message? Regards Thomas