[libvirt] Xen: Stream-API or XML-RPC or XenAPI for managedSave, snapshots

[Daniel P. Berrange]

On Wed, Oct 27, 2010 at 04:56:03PM +0200, Philipp Hahn wrote:
> Hello,
> 
> for our project I need libvirts "managed save" functionality for Xen-3.4. In 
> my implementation I tried to use Xens 'suspend' and 'resume', which would 
> nicely match, but these two functions are not available throu the legacy 
> streaming API (xend-http-server, xend-unix-server), which libvirt seems to 
> still use. They are available throu the XML-RPC interface and the XenAPI 
> interface, which libvirt doesn't seem to use.

There is a XenAPI driver in recent libvirt. Accessible with xenapi://hostname:port/

I'm not sure that 'suspend'/'resume' map to "managed save". suspend/resume
are basically just pausing CPUs afaik, and this is already done in libvirt
APIs.  Managed save is about saving guest state in a standard location
and automagically restoring from that upon guest boot.

> I also will need to look at snapshots next: Has someone already investigated 
> adding snapshot support to Xen(-3.4)?

Not that I'm aware of

Regards,
Daniel
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