No. Anything you can try can be faked by the hypervisor. Even if you're not running in a hostile environment, the hypervisor blocks all of the interesting hardware calls you can make normally (lshw shows a wealth of component serial numbers on a real machine), and obviously the MAC addresses of all your domUs will be virtual and fake.
You're trying to answer the wrong question, though. Any possible scenario I can imagine this being useful in is better solved with either comprehensive system monitoring or contractual guarantees with visibility of compliance.
No. Anything you can try can be faked by the hypervisor. Even if you're not running in a hostile environment, the hypervisor blocks all of the interesting hardware calls you can make normally (
lshwshows a wealth of component serial numbers on a real machine), and obviously the MAC addresses of all your domUs will be virtual and fake.You're trying to answer the wrong question, though. Any possible scenario I can imagine this being useful in is better solved with either comprehensive system monitoring or contractual guarantees with visibility of compliance.