On Tue, 2007-07-10 at 17:23 +0100, Daniel P. Berrange wrote:
On Tue, Jul 10, 2007 at 05:12:38PM +0100, Richard W.M. Jones wrote:
(2) Are the hosts compatible? (eg. microarchitecture, hypervisor, ... other sources of incompatibility?) Should we care at the API level or just report errors from the hypervisors?
The app can validate to some degree by looking at the capabilities XML to see what's supported on both ends & what the guest is using. So I'd let the app do high level validation with that, and just then propagate errors from the underlying system - keeping poliucy out of the libvirt API.
This question comes up in other contexts than migration, too, for example, when you want to start an image you just downloaded. I think it would make sense if there was a common baseline in libvirt that could tell you if a VM has any chance of running at all - otherwise that logic will be scattered across lots of apps. David