Comment 1 for bug 1815799

I'm not sure what nova can do about this besides waiting / retrying the delete of the ironic node before giving up. The libvirt driver has some retry stuff in it:

https://github.com/openstack/nova/blob/63e5cba88af5cd121b498cc46358eef19f83b69f/nova/virt/libvirt/driver.py#L888