Re: [libvirt] some unsorted questions

Daniel P. Berrange wrote: > On Thu, Jul 17, 2008 at 01:29:45AM +0200, Stefan de Konink wrote: >> If this gets implemented I would suggest a call that fetches all domains >> from a running system and not only the defined or only the active ones. > > This is a good idea regardless. The current APIs require an application > todo > > num = list number of domains > for 1 to num > lookup domain by id > > In the case of the Xen drivers, this requires O(n) calls to XenD which > are rather expensive. XenD does actually have ability to return data about > all domains in a single request. So if we had an API for fetching all > domains at once it'd only require O(1) expensive XenD calls. I'd imagine > something like this > > > int virConnectListAllDomains(virConnectPtr conn, > virDomainPtr **domains, > int stateflags); I've thought about something similar as well. It would also be useful to have a command like ListUUIDs with similar state flags, giving apps a more light weight manner of polling for domain state changes (ex. virt-manager)