Re: [Xen-devel] RFC: "local" communications

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Rik van Riel wrote:

> Hi,
>
> When combining clustering with cluster storage, the situation
> arises where virtual machines are not only managed by the cluster
> software, but also need to participate in the cluster software
> themselves...
>
> In order for this to work better, it would be good if there
> was a way for software in a domU to communicate with software
> on the local dom0 - so after being migrated elsewhere, a guest
> would start talking to the new dom0 automatically.
>
> Now what I'm not sure about is, what would be the best way to
> do this?
>
> Should it be some virtual device analogous to the virtual
> network driver, or should we have some other kind of socket
> for node local communications ?
>
> What kind of approach would the Xen community (that's you, if
> you read this far) prefer ?
>  
I can only speak for myself, but I'd personally like to see a small 
userspace library that established a datagram connection between two 
domains (using an event channel and a shared page) that could be reused 
for many applications.
If it could be used with normal read/write calls that would be even 
better (although first thought is that that would require a daemon).
Regards,

Anthony Liguori


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