Re: [libvirt] [FeatureRequest/RFC] non-volitile domain defines

Daniel P. Berrange schreef: >On Wed, Jul 23, 2008 at 12:43:25PM +0200, Stefan de Konink wrote: >>Daniel P. Berrange schreef: >>>On Wed, Jul 23, 2008 at 11:54:11AM +0200, Stefan de Konink wrote: >>>>DP: Would a patch be accepted that makes this configurable for *all* >>>>implementations? So that by after configuration a file is saved, and is >>>>queried after the platform specific implementation doesn't list the >>>>domain as defined? >>>> >>>>List Defined domains: >>>>- Query current implementation >>>>- If defined merge all non available domains. >>>> >>>>In principle what I want to see is that if a domain is not defined in >>>>the specific hypervisor, the domain file can be queried. I know I can >>>>implement this behavior in my own code, but I really thing this would >>>>be a cool thing for more people. >>>This doesn't make any sense. We have APIs for listing & defining >>>inactive domains. The individual drivers implement these APIs according >>>to the >>>required API contract, and the underlying impl is not something which any >>>application using libvirt need know or care about. If your application is >>>relying on the inactive domains being stored in files it is broken. >>Or you could say that libvirt is broken because it isn't able to >>distribute the inactive domains across the network in a consistent way. > >No, because that is not libvirt's job. The goal of libvirt is to provide >an API for managing virtualization capabilities on a host. Data center or >network management is an application level problem, out of scope for >libvirt. That calls for a libvirt-fork that does implement what is needed to consistently providing a replicated pool of domains; call it libvirt-datacenter-edition. I think it is the biggest non sense for implementing shortcommings/management in kvm/qemu, but don't provide these to the other hypervisors 'just because they implement it theirselves locally'. It is non-trivial to provide a 'xenstored' for the complete network, while it is relatively easy to put an NFS dir on the libvirt xml configs.