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On Wed, Jun 15, 2016 at 2:59 PM, Ihar Hrachyshka <ihrachys at redhat.com> wrote:
>
>> On 15 Jun 2016, at 20:18, Gary Kotton <gkotton at vmware.com> wrote:
>>
>> Hi,
>> The following patch breaks stable liberty drivers - https://review.openstack.org/#/c/238745/
>> This means that plugins will need to be updated to support this.
>
> Would you mind sharing details about the breakage? It was assumed that the patch backported includes the relevant compatibility bits to avoid any breakage. If that’s not the case, we should definitely come up with a way to get existing drivers unbroken again.
>
>> What do we do:
>>       • Revert – which could break people using latest stable/liberty
>>       • Have a requirement that Neutron plugins be updated when they use stable/liberty
>
> It may be either revert, or a new patch that would accommodate for your broken driver. It depends on breakage details. So please share those.
>
>> This is really bad.
>
> Absolutely. The change was not expected to require any changes for 3party drivers. If it happened, that’s our fault, and maybe we should land something, or revert. We should not leave it broken for 3party drivers.

Check out an IRC conversation from earlier today:
http://eavesdrop.openstack.org/irclogs/%23openstack-neutron/%23openstack-neutron.2016-06-15.log.html#t2016-06-15T18:23:42

Specifically this is the patch to fix VMware drivers:
https://review.openstack.org/#/c/231217/

The question is can we send a patch to stable/liberty to ensure
compatibility for non-ML2 plugins. Failing that we'll need to revert.

>
>> Any suggestions.
>> Thanks
>> Gary
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