nova/releasenotes/notes/glance_v2-15b080e361804976....

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---
features:
- Nova now defaults to using the glance version 2 protocol for all
backend operations for all virt drivers. A ``use_glance_v1``
config option exists to revert to glance version 1 protocol if
issues are seen, however that will be removed early in Ocata, and
only glance version 2 protocol will be used going forward.
upgrade:
- It is now required that the glance environment used by Nova
exposes the version 2 REST API. This API has been available for
many years, but previously Nova only used the version 1 API.