Re: [ovirt-users] oVirt Networking query
On Fri, Apr 18, 2014 at 09:43:06PM +0000, Rudrajit Tapadar (rtapadar) wrote:
Hi Lior,
Thanks for your response. I¹ll surely take a look at the configurator.
I have used macvtap in passthru mode on a eth to sniff all packets from
all vlans. Hence I was wondering if this is supported in oVirt.
-Rudrajit
On 4/18/14, 1:56 PM, "Lior Vernia" <lvernia(a)redhat.com> wrote:
>Hi Rudrajit,
>
>Welcome, I hope you'll like it! See comments inline.
>
>On 18/04/14 21:53, Rudrajit Tapadar (rtapadar) wrote:
>> Hello!
>>
>> I am a newbie to ovirt and I had a couple of questions and I was hoping
>> I could get some help.
>>
>> 1. Does ovirt support openvswitch without going through Neutron? So far
>> all the documents that I came across uses Neutron as an external
>> network provider.
>
>At the moment it doesn't. However, this has been talked about and will
>probably be implemented at some point (though not sure when).
>
>In fact, if you're a developer, you could help make it happen yourself!
>A lot of the necessary "nfrastructure has been recently laid down by
>this feature, which would only require someone to implement an OVS
>"configurator":
>
>http://www.ovirt.org/Feature/NetworkReloaded
Non-developers are advised to use Vdsm hooks. You should start by
defining whatever network libvirt supports on each of your hosts. This
includes openvswitch (e.g.
http://libvirt.org/formatnetwork.html#elementVlanTag ).
Then, install the "extnet" hook on each of your hosts and define a vNIC
profile in oVirt-Engine with the "extnet" custom propery linking to your
openvswitch network. vNICs configures with the new profile would be
connected to openvswitch.
Similarly, if you define your libvirt network and a pool of host
devices (e.g. http://libvirt.org/formatnetwork.html#examplesDirect ) the
extnet hook would let you use macvtap.
I'd be happy to hear if it works for you, and to assist if it does not.
>
>> 2. Is there a support for macvtap in ovirt? I couldn¹t find anything on
>> macvtap.
>
>Not at the moment, and I myself am not knowledgeable about macvtap.
>However, since Google tells me it should play well with libvirt, I'm
>guessing support for that might also be added by implementing a
>dedicated configurator.
>
>Following the said Google search however, I would be very interested to
>hear why it interests you, since oVirt handles bridge and tap device
>creation. What would be the gain in using specifically macvtap? I'm
>asking because this if there's good reason to do this, it might be
>prioritized in the future.