Glance-image-recover

Overview

This proposal aims to recover an image which is in 'pending-delete' state so as to provide the revert capability for user to get the deleted image back.

General Workflow

1. User enable the delayed_delete in glance-api.conf
2. Delete a specific image
3. List the images which are 'pending-delete'
4. User PUT /v2/images/{image-uuid} on the requested image to recover it
5. Eventually, the requested image should be in 'active' state after recovering successfully.

Known code impact

1. List pending-delete image 2. Only allow 'active' image to be in 'pending-delete'