Hmm, that change [1] above looks to me like it only affects resize/migrate, there are other bugs open related to that, but in our case here it is already the initial creation of an instance that is failing.
The code path referenced in the backtrace was introduced in [2] but that should have been in Mitaka from the start. Though it seems that there are no gate tests for this, so it is not impossible that this issue would have gone unnoticed for some time.
Hmm, that change [1] above looks to me like it only affects resize/migrate, there are other bugs open related to that, but in our case here it is already the initial creation of an instance that is failing.
The code path referenced in the backtrace was introduced in [2] but that should have been in Mitaka from the start. Though it seems that there are no gate tests for this, so it is not impossible that this issue would have gone unnoticed for some time.
[2] https:/ /review. openstack. org/187857