.Image volume cache deletes PowerFlex volumes when the snapshot limit is reached Before this update, when a PowerFlex volume in the image volume cache reached its snapshot limit, the Block Storage service (cinder) replaced the cache entry. However, the volume itself was not deleted, resulting in unusable volumes that consumed quota. Now, when a PowerFlex volume in the image volume cache reaches its snapshot limit, the Block Storage service replaces the cache entry and deletes the PowerFlex volume for the original cache entry.