Comment 4 for bug 1811235

@BalazsGibizer, thank you for you reply. I saw the config option allow_resize_to_same_host. However, that config makes no sense since I want to migrate to selfhost because exception.CannotMigrateToSameHost will be raised in the beginning of function resize.see [1].

[1] https://github.com/openstack/nova/blob/master/nova/compute/api.py#L3530