From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [RFC] Virtual disk configuration, PV vs. emulated,
	backward compatibility etc
Date: Wed, 28 Jul 2010 09:45:18 -0700
Message-ID: <4C505E9E.2090109@goop.org>
References: <1280246290.5872.8932.camel@zakaz.uk.xensource.com>
	<19536.21817.469833.377542@mariner.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <19536.21817.469833.377542@mariner.uk.xensource.com>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>, Ian Campbell <Ian.Campbell@citrix.com>
List-Id: xen-devel@lists.xenproject.org

  On 07/28/2010 09:05 AM, Ian Jackson wrote:
> For Linux HVM guests using PV-on-HVM drivers, users are recommended to
> supply as few hd* devices as possible and use pure xvd* devices for
> the rest.  Modern PV-on-HVM drivers will map the hd* devices to
> /dev/xvdHDa etc.

I think we've decided to make blkfront register pv versions of emulated 
devices as hdX/sdX rather than using xvdHD.  We don't do this in pv domains.

     J