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> For example, I look at your nova fork and it has a "don't allow this
> call during an upgrade" decorator on many API calls. Why wasn't that
> done upstream? It doesn't seem overly controversial, so it would be
> useful to understand the reasoning for that change.

Interesting. We have internal accounting for service versions and can
make a determination of if we're in an upgrade scenario (and do block
operations until the upgrade is over). Unless this decorator you're
looking at checks some non-upstream is-during-upgrade flag, this would
be an easy thing to close the gap on.

--Dan