Downstream tracker for upstream bugs:

• https://bugs.launchpad.net/nova/+bug/2119114
• https://bugs.launchpad.net/nova/+bug/2130881

Shift on Stack observed that in https://github.com/kubernetes/cloud-provider-openstack/pull/2742#issuecomment-3135940269 that since the Caracal OpenStack release device detach is significantly (~100%) slower than before as the nova-compute libvirt driver relies on timeout instead of libvirt notifications to detect when the device is removed from the running VM.

During eventlet removal work of nova-compute service it was noticed that the libvirt event handling of the libvirt driver does not work on a freshly deployed compute but it works after the compute is restarted at least once.