Re: [Xen-devel] watch event for die domain ?

[Christian Limpach <christian.limpach@xxxxxxxxx>]

On 9/10/05, NAHieu <nahieu@xxxxxxxxx> wrote:
> I am writing a small application to watch for xenstore events. I want
> to know when a specific domain shutdown or reboot. It is best to watch
> it via xenbus interface, but how? Is there any event or node can give
> me such an event?

You can have a watch on @releaseDomain, the watch will fire whenever
xenstored unmaps the store page it has mapped from the domain. 
There's also @introduceDomain for when xenstored maps the page after
the domain was created.

> If not, I must periodically scan the domains (using libxc interface)
> to detect if a domain dies, but that is not as good as xenbus
> approach.

Yeah, polling is definitely not the way to go ;-)

     christian

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