On 7/19/2019 8:26 AM, Massimo Sgaravatto wrote: > Is there some clean way to remove/change the problematic property from > the relevant instances ? Not really externally. For the snapshot images you should be able to update those properties on the image using the glance API (and CLIs), but for existing instances the image metadata properties are stored in the instance_system_metadata table with an image_ prefix so you'd have to update those. I would have thought there would be a translation shim for the rename of that property in nova though... https://review.opendev.org/#/c/202675/ doesn't explain at all why that was done. Note that the old hypervisor_type image meta key should be translated to img_hv_type in the object code: https://github.com/openstack/nova/blob/d5c67a3d954ddb571645886a23a0f251ae7dd2bb/nova/objects/image_meta.py#L515 -- Thanks, Matt