Comment 1 for bug 1402502

Hi eminjin,

The behavior you describe is not a bug -- resources are not freed when you suspend an instance.

The feature in nova that most resembles what you're looking for is 'nova shelve', please see doc:

http://docs.openstack.org/user-guide/content/shelve_server.html

Does this address your concern? Or would you like this launchpad report to be a feature request for freeing resources on suspend?