Re: [Xen-devel] Guest to Host communication

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxx] On Behalf Of Jose A. Lopes
> Sent: 22 October 2013 09:00
> To: xen-devel@xxxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] Guest to Host communication
> 
> Hi,
> 
> My name is Jose and I work at Google on the Ganeti project.
> I am using Xen 4.0.
> 
> I would like to ask your advice on what you think is the best way to
> send data between the guest and the host, for example, the guest OS
> tells Ganeti that it wants to be reinstalled at reboot time.  Even a
> simple integer suffices for our purposes.
> 
> We have considered adding a new device, such as, a char/block device.
> For example, we could add an SSD device that is backed by a file.  We
> have also considered a separate console.
> 
> What do you think is the preferred approach to this problem?
> 

If you're talking about a small amount of data and only need a low bandwidth 
channel then xenstore is probably what you want.

  Paul

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