hi cinder team, may I bring your attention to https://bugs.launchpad.net/ironic/+bug/2030976/comments/42
we just caught that in downstream Yoga
recent change in oslo.messaging breaks cinder notifications because of some peculiarities of cinders' RequestContest subclass

fix is here (manila is also affected)
https://review.opendev.org/q/Ifb660688c590fb1c32cbe0ae03e0ea444f19cbb8
and would have to be backported to the branches the oslo.messaging patch was backported