virtio(_net) issue

virtio(_net) issue

[Frans de Boer]

After many posts elsewhere - and no single reaction - I try this forum.

I use SuSE 11.0 and 11.1 with the latest kernel (.28.2) and before in
both host and the guest. After installing an image using '-net
nic,model=e1000....' I changed the previous model to 'virtio'. After a
restart, I do get a IP address assigned but also csum errors upon
initialization. After I logged in, ifconfig show fine data, but I am
unable to get any IP traffic with anything but itself.

Can anybody shed some light on it?

Thanks, frans.

Re: virtio(_net) issue

[Mark McLoughlin]

On Thu, 2009-01-29 at 10:06 +0100, Frans de Boer wrote:
> After many posts elsewhere - and no single reaction - I try this forum.
> 
> I use SuSE 11.0 and 11.1 with the latest kernel (.28.2) and before in
> both host and the guest. After installing an image using '-net
> nic,model=e1000....' I changed the previous model to 'virtio'. After a
> restart, I do get a IP address assigned but also csum errors upon
> initialization. After I logged in, ifconfig show fine data, but I am
> unable to get any IP traffic with anything but itself.
> 
> Can anybody shed some light on it?

What version of kvm-userspace is this? What exactly are the csum errors?

It kind of sounds like an issue we fixed some time ago:

  http://www.mail-archive.com/kvm@vger.kernel.org/msg02794.html

Cheers,
Mark.

Re: virtio(_net) issue

[Frans de Boer]

On Fri, 2009-01-30 at 10:54 +0000, Mark McLoughlin wrote:
> Hi Frans,
> 
> Please re-post to the list.
> 
> On Fri, 2009-01-30 at 11:43 +0100, Frans de Boer wrote:
> > The message is 'partial csum error 65280/29754 len=42' this time.
> 
> Are you sure it's not:
> 
>   bad partial csum: 65280/29754 len=42
> 
> Thanks,
> Mark.
> 
Ok, the correct message was: 'bad partial csum: 65280/29754 len=43'

Ciao,
Frans.

Sorry, have send it to the wrong list before.