I have put "force_raw_images = False" into the default section of the nova.conf on a compute slave (in this case arm64), restarted nova-compute, and am able to launch an instance.
Next step is to decide if this should be a charm config option or if the charm should attempt to detect the backend storage?
The default for Pike (and in fact Ocata) is
force_raw_images = True
I have put "force_raw_images = False" into the default section of the nova.conf on a compute slave (in this case arm64), restarted nova-compute, and am able to launch an instance.
Next step is to decide if this should be a charm config option or if the charm should attempt to detect the backend storage?