In my OpenStack Rocky cloud I have some instances that were created (before updating to Rocky) using images with the property hypervisor_type='qemu'. Since in my compute nodes [libvirt]/virt_type is "kvm", after having updated to Rocky I had to change these images removing that property of changing its value (qemu --> kvm): this is discussed in the thread: http://lists.openstack.org/pipermail/openstack-discuss/2019-July/thread.html... Now I am not able to migrate anymore the instances that were created using those images (ImagePropertiesFilter filters out all compute nodes) before fixing the property. As suggested by Matt I tried to play with the instance_system_metadata table of the nova database. I first tried to change the value of that property (qemu --> kvm) [*] I also tried to remove the property [**] but the nova migrate keeps failing. In the request I keep seeing that Instance contains properties ImageMetaProps...img_hv_type='qemu' What else needs to be modified? Thanks, Massimo [*] mysql> select * from instance_system_metadata where instance_uuid='57dcdc2f-ef30-4512-beff-128c1621c5c6'; +---------------------+------------+------------+---------+--------------------------------------+------------------------+--------------------------------------+---------+ | created_at | updated_at | deleted_at | id | instance_uuid | key | value | deleted | +---------------------+------------+------------+---------+--------------------------------------+------------------------+--------------------------------------+---------+ | 2017-05-15 12:32:57 | NULL | NULL | 9868217 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_hypervisor_type | kvm | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868220 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_disk_format | qcow2 | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868223 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_container_format | bare | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868226 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_min_ram | 512 | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868229 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_min_disk | 20 | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868232 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_base_image_ref | c2d3e37c-b14f-4472-9bc2-d75f26ab900d | 0 | +---------------------+------------+------------+---------+--------------------------------------+------------------------+--------------------------------------+---------+ [**] mysql> delete from instance_system_metadata where id='9868217'; Query OK, 1 row affected (0.01 sec) mysql> select * from instance_system_metadata where instance_uuid='57dcdc2f-ef30-4512-beff-128c1621c5c6'; +---------------------+------------+------------+---------+--------------------------------------+------------------------+--------------------------------------+---------+ | created_at | updated_at | deleted_at | id | instance_uuid | key | value | deleted | +---------------------+------------+------------+---------+--------------------------------------+------------------------+--------------------------------------+---------+ | 2017-05-15 12:32:57 | NULL | NULL | 9868220 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_disk_format | qcow2 | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868223 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_container_format | bare | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868226 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_min_ram | 512 | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868229 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_min_disk | 20 | 0 | | 2017-05-15 12:32:57 | NULL | NULL | 9868232 | 57dcdc2f-ef30-4512-beff-128c1621c5c6 | image_base_image_ref | c2d3e37c-b14f-4472-9bc2-d75f26ab900d | 0 | +---------------------+------------+------------+---------+--------------------------------------+------------------------+--------------------------------------+---------+ 5 rows in set (0.00 sec)