[libvirt] Expose qemu monitor command query_block?

[Osier Yang]

于 2011年10月24日 17:13, Daniel P. Berrange 写道:
> On Mon, Oct 24, 2011 at 05:10:08PM +0800, Osier Yang wrote:
>> Command "query-block" is only used internally for medium's
>> checking before migration currently. Should we expose it
>> as a public API, such as virDomainQueryBlock (or a qemu
>> specific API, virDomainQemuQueryBlock)?
>>
>> It has enough useful infomation which user may care out,
>> such as "io-status", "locked", "removable", "inserted". And
>> perhaps more info in future.
> Most of this is information already available via the XML description.
> The problem is that we're not being notified by QEMU when some of
> these things change, so we're unable to update the XML. Applications
> should not have to poll on a "query block" like  API to get this kind
> of info - we should be notifying them instead.
>
>
> Daniel

How quick response. Ok, so we still wait for qemu's events. Thanks

Osier