[neutron][OVN] Multiple mechanism drivers

Slawek Kaplonski skaplons at redhat.com
Mon Nov 25 07:51:44 UTC 2019


I think that this may be true that networking-ovn will not work properly
with other drivers.
I don't think it was tested at any time.
Also the problem may be that when You are using networking-ovn than whole
neutron topology is different. There are different agents for example.

Please open a bug for that for networking-ovn. I think that networking-ovn team
will take a look into that.

On Mon, Nov 25, 2019 at 04:32:50PM +1100, Sam Morrison wrote:
> We are looking at using OVN and are having some issues with it in our ML2 environment.
> We currently have 2 mechanism drivers in use: linuxbridge and midonet and these work well (midonet is the default tenant network driver for when users create a network)
> Adding OVN as a third mechanism driver causes the linuxbridge and midonet networks to stop working in terms of CRUD operations etc.
> It looks as if the OVN driver thinks it’s the only player and is trying to do things on ports that are in linuxbridge or midonet networks.
> Am I missing something here? (We’re using Stein version)
> Thanks,
> Sam

Slawek Kaplonski
Senior software engineer
Red Hat

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