[nova][dev] Which response code should be returned when migrate is called but the src host is offline?

Hello all, I can't seem to settle on an answer for $subject as part this bugfix: compute: Reject migration requests when source is down https://review.openstack.org/#/c/623489/ 409 suggests that the user is able to address the issue while 503 suggests that n-api itself is at fault. I'd really appreciate peoples thoughts on this given I hardly ever touch n-api. Thanks in advance, -- Lee Yarwood A5D1 9385 88CB 7E5F BE64 6618 BCA6 6E33 F672 2D76