[openstack-dev] [neutron] Testing Neutron with latest OVS

Assaf Muller amuller at redhat.com
Thu Jan 14 20:43:13 UTC 2016

On Thu, Jan 14, 2016 at 9:28 AM, Russell Bryant <rbryant at redhat.com> wrote:
> On 01/13/2016 11:51 PM, Tony Breeds wrote:
>> The challenge for you guys is the kernel side of things but if I
>> understood correctly you can get the kenrel module from the ovs
>> source tree and just compile it against the stock ubuntu kernel
>> (assuming the kernel devel headers are available) is that right?
> It's kernel and userspace.  There's multiple current development
> efforts that involve changes to OpenStack, OVS userspace, and the
> appropriate datapath (OVS kernel module or DPDK).
> The consensus I'm picking up roughly is that for those working on the
> features, testing with source builds seems to be working fine.  It's
> just not something anyone wants to gate the main Neutron repo with.
> That seems quite reasonable.  If the features aren't in proper
> releases yet, I don't see gating as that important anyway.

I want to have voting tests for new features. For the past year the OVS agent
ARP responder feature has been without proper coverage, and now it's the
upcoming OVS firewall driver. I think that as long as we compile from a specific
OVS patch (And not a moving target), I don't see much of a difference between
gating on OVS 2.0 and gating on, for example, the current tip of the
OVS 2.5 branch
(But continuing to gate on that patch, so when the OVS 2.5 branch gets backports
we won't gate on those, and we'll be able to move to a new tip in our own pace).
As long as we pick a patch to compile against and run the functional
tests a few times
and verify that it works, I think it's reasonable. We've been gating
against OVS 2.0
for the past few years, that to me seems unreasonable. We're gating
against an OVS
version nobody is using in production anymore.

> --
> Russell Bryant
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