[openstack-dev] [neutron][stable] proactive backporting

Ihar Hrachyshka ihrachys at redhat.com
Fri Oct 16 12:33:38 UTC 2015

Hi all,

I’d like to introduce a new initiative around stable branches for neutron official projects (neutron, neutron-*aas, python-neutronclient) that is intended to straighten our backporting process and make us more proactive in fixing bugs in stable branches. ‘Proactive' meaning: don’t wait until a known bug hits a user that consumes stable branches, but backport fixes in advance quickly after they hit master.

The idea is simple: every Fri I walk thru the new commits merged into master since last check; produce lists of bugs that are mentioned in Related-Bug/Closes-Bug; paste them into:


Then I click thru the bug report links to determine whether it’s worth a backport and briefly classify them. If I have cycles, I also request backports where it’s easy (== a mere 'Cherry-Pick to' button click).

After that, those interested in maintaining neutron stable branches can take those bugs one by one and handle them, which means: checking where it really applies for backport; creating backport reviews (solving conflicts, making tests pass). After it’s up for review for all branches affected and applicable, the bug is removed from the list.

I started on that path two weeks ago, doing initial swipe thru all commits starting from stable/liberty spin off. If enough participants join the process, we may think of going back into git history to backport interesting fixes from stable/liberty into stable/kilo.

Don’t hesitate to ask about details of the process, and happy backporting,

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