Cloned from launchpad blueprint https://blueprints.launchpad.net/glance/+spec/clone-image-across-regions.

Description:

Proposal is to use "pull" model, i.e., call by the user will be made in the target region

Pluses:
makes it easy to return an image URL that can be polled.

Things to consider:
- if a UUID doesn't exist or the user doesn't have permission to copy
- Get good information on the status of the image
- the structure of the call
- The regions a user has access to need be in the user's service catalog

Image properties would be propagated to target glance deployment from source glance deployment
- no ongoing synchronization 

Specification URL (additional information):

None