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On Wed, Aug 15, 2012 at 9:16 AM, Thomas Vachon <vachon at sessionm.com> wrote:
> On Wed, Aug 15, 2012 at 9:58 AM, Thomas Vachon <vachon at sessionm.com> wrote:
>> On Wed, Aug 15, 2012 at 8:54 AM, Thomas Vachon <vachon at sessionm.com> wrote:
>>>
>>> On Wed, Aug 15, 2012 at 8:53 AM, Narayan Desai <narayan.desai at gmail.com> wrote:
>>> > On Wed, Aug 15, 2012 at 7:24 AM, Thomas Vachon <vachon at sessionm.com> wrote:
>>> >
>>> >> I am also on Precise.  Downing/Up'ing the interface via VNC did work.
>>> >> How exactly did you setup vhost_net, can you provide your libvirt?
>>> >
>>> > Hm, that might mean that isn't the problem, but this is an easy enough
>>> > thing to check.
>>> >
>>> > Setting up vhost_net is pretty easy; it is auto-detected by kvm, so
>>> > all you need to do is modprobe it on the hypervisor.
>>> >  -nld
>>>
>>> Found the docs saying that.  It might help, I will report back on this
>>> thread when I run the tests in a bit
>>
>> OK, I lost all connectivity between nova-network and my vm's.  DNSMasq
>> is running and I added the vhost_net module (and confirmed libvirt
>> sees it).  Do I need to do something to the guests now too?
>
> I think I found the root bug:
> https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/997978

Yeah, this is where i found the vhost_net workaround. (it seems to
work for some people and not for others, so I suspect the problem is
more complicated somehow)
 -nld