Comment 10 for bug 1196666

It turns out that the latest issue is due to that I didn't restart cinder-volume service after disabling "glance_api_version=2". After restarting cinder-volume service, the upload-to-image is working.

In summary, the issue lies in that the confliction when setting "glance_api_version=2" in cinder.conf in order to get benefit of copy-on-write cloning for cinder volume creation. But Glance API v2 has not implement "create" function which leads to the failure of upload-to-image function.

This issue will force people to pick one of the two features unless they are resorting to some complex multi cinder configuration setup.