[openstack-dev] [oslo][nova][all] timeutils deprecation removals will break Nova

Matt Riedemann mriedem at linux.vnet.ibm.com
Mon Dec 21 19:42:27 UTC 2015

On 12/21/2015 1:22 PM, Davanum Srinivas wrote:
> Rob,
> Can we set some goals for the server projects too?
> Say anything deprecated in liberty timeframe in oslo libs or any other
> libs we consume should be fixed by milestone2 in mitaka? At the moment
> the burden is entirely on oslo and hence unfair.
> Thanks,
> Dims
> On Mon, Dec 21, 2015 at 2:15 PM, Robert Collins
> <robertc at robertcollins.net> wrote:
>> On 21 December 2015 at 04:57, Davanum Srinivas <davanum at gmail.com> wrote:
>>> Nova folks,
>>> We have this review in oslo.utils:
>>> https://review.openstack.org/#/c/252898/
>>> There were failed effort in the past to cleanup in Nova:
>>> https://review.openstack.org/#/c/164753/
>>> https://review.openstack.org/#/c/197601/
>>> What do we do? Suggestions please.
>> We don't remove it yet. Not till liberty-eol at the earliest, or if we
>> don't get users migrated early enough, mitaka-eol.
>> We would benefit from an automated thing in place to tell projects
>> like Nova that they are using deprecated things during CI (without
>> bloating deployer logs) -  whether a keystone API, an oslo config
>> option or function, or $whatever. We would also benefit from a thing
>> to rollup such information from consuming projects back to the
>> deprecating project, so we can tell whether we're ready to cleanup old
>> things.
>> I think in general that there needs to be a balance around effort on
>> migrations: if oslo deprecates something - anything - we're creating
>> work for consumers of oslo. Its unfair for us to do that unilaterally.
>> Conversely, if projects don't migrate away from poor APIs onto newer
>> better ones, they create long term maintenance work for oslo: so we
>> all need to work together to coordinate such things.
>> https://review.openstack.org/#/c/226157/12 is part of this - it is an
>> effort to bring consistency in expectations and process/patterns here.
>> -Rob
>> --
>> Robert Collins <rbtcollins at hpe.com>
>> Distinguished Technologist
>> HP Converged Cloud
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Nova also needs an Oslo liaison [1]. That used to be Joe Gordon, but 
he's gone now. That would really be the person in Nova driving the Oslo 
changes and review priorities.

[1] https://wiki.openstack.org/wiki/CrossProjectLiaisons#Oslo



Matt Riedemann

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