[openstack-dev] [grenade] future direction on partial upgrade support

Sean Dague sean at dague.net
Wed Jul 8 16:35:02 UTC 2015

On 07/08/2015 12:27 PM, Russell Bryant wrote:
> On 07/08/2015 08:48 AM, Sean Dague wrote:
>> On 07/06/2015 09:31 PM, Anita Kuno wrote:
>>> On 07/06/2015 09:02 PM, Armando M. wrote:
>>>> Thanks Sean, comments inline.
>>>> On 6 July 2015 at 16:58, Sean M. Collins <sean at coreitpro.com> wrote:
>>>>> I'd also like to chime in - we've had some discussions on -infra today
>>>>> about the partial upgrade issue, and collected the following notes on an
>>>>> etherpad.
>>>>> https://etherpad.openstack.org/p/neutron-partial-upgrades
>>>>> One of the things identified, was the complexity of the DVR feature in
>>>>> Neutron, and an attempt to simplify the partial upgrade job by not
>>>>> enabling the DVR feature.
>>>> The DVR issue is entirely orthogonal to this, but I am willing to play
>>>> along.
>>>>> http://eavesdrop.openstack.org/meetings/networking/2015/networking.2015-07-06-21.00.log.html
>>>>> Clark Boylan has proposed a patch to create a new job that runs on
>>>>> multiple nodes, but does not have DVR enabled, in the hopes that having
>>>>> less moving parts will allow the multinode grenade work to continue on a
>>>>> parallel track,
>>>> Who is leading the Grenade effort? Is it Clark?
>>> Actually in terms of who stirred the pot, it's me.
>>> There were too many people talking in too small of groups for me to
>>> stand aside any longer. The grenade job looked like it was going to
>>> continue to get blocked without everyone understanding all the factors
>>> so I wanted to have folks have a discussion.
>> Was out last week, so still catching up on some of this. Thanks Anita
>> for stirring the pot.
>> I've got a POC approach proposed in the following 3 patches to do
>> partial testing in multinode via a post-stack.sh script in grenade (a
>> way to tell grenade to do another thing after the base stack call is done).
>> The grenade change - https://review.openstack.org/#/c/199073/
>> The devstack-gate change that would put subnode setup into post-stack.sh
>> - https://review.openstack.org/#/c/199091/
>> And the project-config change to make this experimental on devstack-gate
>> and grenade is here - https://review.openstack.org/#/c/199103/
>> The first job I created here was a nova-net one, because I know enough
>> about the paths, and the partial upgrade story on nova (which has been
>> voting for a year), to know that all bugs introduced here are probably
>> my own. But if we can get that working, and the nova partial job moved
>> over, I think expanding it to arbitrary configs is probably pretty simple.
>> Assistance ploughing through on this direction would be appreciated.
> That all sounds great.  It still seems quite reasonable to merge the
> neutron job, that works just like the nova one that has been voting for
> a year, to run as non-voting against neutron-only in the meantime.

Which patch are you referencing?


Sean Dague

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