[openstack-dev] [nova][neutron] Update on Neutron's rolling upgrade support?

Ihar Hrachyshka ihrachys at redhat.com
Tue Jan 26 13:19:23 UTC 2016

Jay Pipes <jaypipes at gmail.com> wrote:

> Hey Sean,
> Tomorrow morning UTC, we'll be discussing Neutron topics at the Nova  
> mid-cycle. Wondering if you might give us a quick status update on where  
> we are with the Neutron devstack grenade jobs and what your work has  
> uncovered on the Neutron side that might be possible to discuss in our  
> midcycle meetup?

Lemme give you some update on the matter.

We experienced some grenade partial job failures in multinode when creating  
initial long standing resources:


That was identified as an MTU issue and to be fixed by a set of patches:


The only needed piece not in yet is: https://review.openstack.org/267847  
(we need someone from infra to give second +2)

With that, we pass past the resource creation phase and run actual tests  
with 3 failures. You can see latest results using the following fake patch:  

Failure logs:  

All three tests fail when ssh-ing into an instance using br-ex. This may be  
another MTU issue, now on br-ex side. We have not identified specific fixes  
to merge for that yet.

Hope that helps,


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