Comment 4 for bug 1627694

So I'm actually not sure about this bug. When shelve-offloading an instance, the instance is destroyed from the hypervisor but the network and volumes are left intact for the instance in the database. When we unshelve the instance, network and volume information is still available in neutron and cinder, respectively. So if the unshelve fails, we don't actually want to delete the network and volume information, because then you can't try to unshelve them again later (on a different host for example). So I think this is actually working as designed.