@sachin: Yes I referred the document. But the xml file only comes after
creating the VM.
This error is throwing while creating the VM. I tried any way also: I
created VM after creating br0 using brctl command,
and deleted br0 and created br0 using ovs-vsctl and modified xml file, but
still getting the same error when I start the VM.

@Ben: When I used ubuntu 12.04, KVM with libvirtd version 0.9.8 ( default
one) and  openvswitch-1.7.1
Its successfully creating the VMs. There is no need of modifying the xml
file.

Libvirtd version 0.9.8 requires both openvswitch kernel module and brcompat
kernel module.
I installed both and created br0 using ovs-vsctl command and created VM in
bridge mode. Its perfect.

Where as INSTALL.Libvirt is referring libvirtd version no at least 0.9.11
or above. Now I tried with ubuntu 13.10
with openvswith-2.0.0 and libvirtd ( default version no 1.1.1), But
openvswitch 2.0.0 does not support
brcompat module, so I Installed openvswitch kernel module only and created
bridge br0, and trying to create
VM in bridge mode, but its throwing the error.

Is some thing missing in my setup. Is the case that linux bridge module is
needed along with openvswitch kernel
module. I tried all the combinations, but getting the same error. Help in
this case is highly appreciated.

Thanks,
Ramana.




On Wed, Feb 26, 2014 at 9:39 PM, Ben Pfaff <b...@nicira.com> wrote:

> On Wed, Feb 26, 2014 at 12:45:58PM +0530, Ramana Reddy wrote:
> > I have installed openvswitch-2.0.0 on ubuntu 13.10 ( kernel:
> > 3.8.0-34-generic), and
> > created a bridge br0. Now I started virt-manager to install VM.  I
> selected
> > bridge
> > mode  and given br0 as bridge name. After that when I click  finish
> button
> > its
> > throwing the following error (libvirtd version is 1.1.1).
>
> The error messages you provided don't give any hint as to the problem,
> or even whether Open vSwitch is involved.  For us to help, you will need
> to provide additional information showing what libvirtd did and how it
> failed.
>
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