[libvirt] some unsorted questions
Cole Robinson
crobinso at redhat.com
Thu Jul 17 14:22:05 UTC 2008
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)
- Cole
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