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Hi Yi,

On 6/17/21 11:27 PM, Yi Yang (杨燚)-云服务集团 wrote:
> Hi, Brian
> 
> Is OVN only one option for Neutron now? The old blueprint is obsoleted because nobody will do this, I don't think it has been almost done.

I would encourage you to discuss your RFE at the drivers meeting 
tomorrow, I was just stating my opinion since I will not be there.

Part of this is based on the previous spec that was implementing this, 
https://review.opendev.org/c/openstack/neutron-specs/+/629761 - which 
was abandoned with this note:

"With our continues development of DVR – Openflow solution and the 
evolution of OVN, we have done some analysis. The feature set in OVN is 
richer than the current DVR solution & is gaining momentum in the 
community. So we are intending to transition our DVR efforts to OVN and 
stop further development in DVR. We believe this will better help 
community and networking project. Intel will be glad to help customers 
transition from DVR to OVN."

There were a number of patches that were pretty far along when this was 
done according to what's listed on 
https://blueprints.launchpad.net/neutron/+spec/openflow-based-dvr

-Brian


> -----邮件原件-----
> 发件人: Brian Haley [mailto:haleyb.dev at gmail.com]
> 发送时间: 2021年6月18日 10:16
> 收件人: Slawek Kaplonski <skaplons at redhat.com>; miguel at mlavalle.com; amotoki at gmail.com; YAMAMOTO Takashi <yamamoto at midokura.com>; ralonsoh at redhat.com; Nate Johnson <njohnson at redhat.com>
> 抄送: openstack-discuss at lists.openstack.org
> 主题: [lists.openstack.org代发]Re: [neutron] Drivers meeting agenda for 18.06.2021
> 
> Hi Slawek,
> 
> I will not be able to attend the meeting tomorrow, have a conflicting appointment, notes on the two RFEs below.
> 
> On 6/17/21 9:01 AM, Slawek Kaplonski wrote:
>> Hi,
>>
>> Agenda for tomorrow's drivers meeting is at [1].
>> We have one new RFE to discuss [2] - It's another approach to do
>> OpenFlow based DVR :) We have also one new RFE [3] which I would like
>> You to check and help triaging before we will discuss it in the
>> drivers meeting.
>>
>> [1] https://wiki.openstack.org/wiki/Meetings/NeutronDrivers#Agenda
>> [2] https://bugs.launchpad.net/neutron/+bug/1931953
> 
> (Openflow-based DVR L3)
> 
> As Liu mentioned in the bug, there was a spec/blueprint/almost-implementation before we decided to adopt OVN as the flow-based DVR option.  While I can understand the desire to want to have less hops in ML2/OVS/DVR, we made the decision to invest in OVN going forward, so I don't think we should take on this work.
> 
>> [3] https://bugs.launchpad.net/neutron/+bug/1932154
> 
> (Off-path SmartNIC Port Binding)
> 
>   From a high-level I'm fine with this, I'm sure Rodolfo will have more questions :)  After reading the Nova spec Sean asked a good question - is there a requirement on the core OVN code to support this?  I'll add that to the bug (done).
> 
> -Brian
>