Re: [Xen-devel] Where can I find some tutorial or manual on how to use xenstore? - Ewan Mellor - com.xensource.lists.xen-devel

15 messages in com.xensource.lists.xen-develRe: [Xen-devel] Where can I find some...

From	Sent On	Attachments
Lily Huang	19 Jun 2006 00:12
Horms	19 Jun 2006 19:14
Jacob Gorm Hansen	25 Jun 2006 05:56
Lily Huang	25 Jun 2006 12:00
Jacob Gorm Hansen	26 Jun 2006 10:16
Nick Logan	28 Jun 2006 04:08
Ewan Mellor	28 Jun 2006 06:05
Nick Logan	28 Jun 2006 06:37
Ewan Mellor	28 Jun 2006 07:57
Nick Logan	28 Jun 2006 08:20
Ewan Mellor	28 Jun 2006 08:31
Nick Logan	29 Jun 2006 06:53
Ewan Mellor	29 Jun 2006 07:19
Andrew Warfield	29 Jun 2006 07:40
Nick Logan	29 Jun 2006 07:41

Subject:	Re: [Xen-devel] Where can I find some tutorial or manual on how to use xenstore?
From:	Ewan Mellor (ew...@xensource.com)
Date:	06/28/2006 06:05:03 AM
List:	com.xensource.lists.xen-devel

On Wed, Jun 28, 2006 at 12:08:33PM +0100, Nick Logan wrote:

It's certainly possible, I've used this code as the basis for a new driver, which is similar to the vbd driver. The driver starts fine but I am unable to have it participate in a domain save/restore. I guess that this is because xend is not aware of the new driver and the open devices supported by this driver and hence the driver does not receive resume calls when the domain is restored..

Is there any way that a new driver can make it's existance known to xend?

If you've managed to get the driver to start through xend, I'd be surprised if it's xend's fault that save/restore does not work.

In any case, the main driver integration point is at the bottom of tools/python/xen/xend/XendDomainInfo.py, where you can register a subclass of xen.xend.server.DevController.py to manage the device. You also need to make sure that the driver's config is parsed properly by xm.

Take a look at Julian Chesterfield and Andrew Warfield's recent blktap patches to see how driver tool integration is done:

http://lists.xensource.com/archives/html/xen-devel/2006-06/msg00738.html

Cheers,

Ewan.