[openstack-dev] [tripleo] Add support for Neutron NSX driver

Emilien Macchi emilien at redhat.com
Tue Sep 5 04:50:08 UTC 2017

On Fri, Sep 1, 2017 at 2:37 PM, Tong Liu <lexuns at gmail.com> wrote:
> Hi,
> In pike release, we added supported for Neutron NSX driver in TripleO [1] by
> the following patches. This will enable TripleO overcloud deployment to use
> vmware_nsx as Neutron core_plugin.
> https://review.openstack.org/#/c/441668/
> https://review.openstack.org/#/c/452047/
> https://review.openstack.org/#/c/452391/
> However, there are some critical issues which prevent it from functional
> correctly, and we fixed them in master with the following patches.
> https://review.openstack.org/#/c/499395/
> https://review.openstack.org/#/c/498143/
> https://review.openstack.org/#/c/498142/
> Can we merged these patches and back port to pike?

So if we follow all the rules, it goes against how to we handle stable
branches and release management in general.

Usually what happens is we discuss about blueprints at PTG and then
during the cycle developers implement the blueprints.
Sometimes some blueprint get deferred for some reason (quite often
it's because of overcommit but that's a separated topic) so they can
as for FFE (feature freeze exception), granted by the PTL.

In your case, it's a bit more complex. You created the blueprint a few
days before final release of Pike and you're asking us to merge the
code AND backport it to Pike.
That's for the facts & context, hope it helps to understand why this
request is tricky.

Now you're a vendor and you're helping to support your driver, which is good.

We'll need to evaluate each commit and see if they are backward
compatible and actually don't beak any interface (because we want our
stable branches stable).

I'm ok to make an exception if next time you can do a better job in
scheduling the work that will be done during one cycle.
The way we propose blueprint is really lightweight, and in the open,
so really no complication here.

For now, most of the team is quite busy on Pike release (and PTG
coming next week), so I'm not sure your patches will be reviewed soon
(if yes, that's good).
For the backports, we'll have to evaluate case by case and see if it's possible.

Thanks for your work and we hope our collaboration can happen earlier
the next time.

> Thanks,
> Tong
> [1] Blueprint:
> https://blueprints.launchpad.net/tripleo/+spec/neutron-nsx-driver

Emilien Macchi

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