Comment 16 for bug 1560965

Testing on Mitaka and confirming this is still very messy. I'd be interested to know why the relevant code seems to have moved from create_instance.py to Javascript as eblock has pointed out.

For some reason I haven't figured out yet, eblock's latest patch is not working for me, though a similar patch to the function below (setFinalSpecBootFromVolumeDevice) works for the volume->volume case (attached).

Here is some relevant info while it's fresh in my mind:

* Both image->volume and volume->volume appear to work via the API but not Horizon, so this is absolutely a Horizon problem imo.

* Reading the docs on Nova BDM specifiying the device name as Horizon currently does (vda) is not recommended, so eblock's patch should be the correct approach.

* setFinalSpecBootFromVolumeDevice seems to be hardcoded to use BDM v1, I'm not sure if there's a reason for this, but updating it to use v2 as in my patch seems to work ok for both KVM and Xen.