can not chose destination_type in block_device_mapping_v2

[Nemanja Miletic]

In heat there is no option to set the destination_type value of the block_device_mapping_v2.
In case of attaching a CD device to an instance at boot time you need a new volume for the image because heat sets the destination type of image automatically to ‘volume’.
Adding destination_type to the block_device_mapping_v2 properties and by setting it to ‘local’ will allow attaching a CD device at boot time without needing to create a new volume for the image.

I have exactly the same issue as this old one:
https://bugs.launchpad.net/heat/+bug/1627446

Reply in the above old issue is not a workaround for the problem above.
Basically user should be allowed to chose source and destination type for a block device.
I have a cluster without ability to create persistent volumes and can not attach additional block device created from an image (cdrom) using heat.

[Nemanja Miletic (nmiletic)]

It seems that Nova does not support source image destination local combination since this bug fix:
https://bugs.launchpad.net/nova/+bug/1377958

I still have no idea why. If someone could explain it I would really appreciate it.

[Nemanja Miletic (nmiletic)]

Asked the Nova question in open stack-discuss list.