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Re: [Xen-devel] [RFC] Virtual disk configuration, PV vs. emulated, backw

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] [RFC] Virtual disk configuration, PV vs. emulated, backward compatibility etc
From: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Date: Thu, 29 Jul 2010 15:50:59 +0100
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxx>
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Jeremy Fitzhardinge writes ("Re: [Xen-devel] [RFC] Virtual disk configuration, 
PV vs. emulated, backward compatibility etc"):
>   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.

Stealing the major number from the ide and scsi drivers, or just the
name ?

What if the domain has real sd* devices too ?  (pvscsi, pvusb + usb
mass storage, passthrough, ...)

Ian.

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