Re: virtio implementation?

["Daniel P. Berrange" <berrange-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On Thu, Jul 19, 2007 at 01:48:21AM +0200, Arnd Bergmann wrote:
> On Wednesday 18 July 2007, Gerd Hoffmann wrote:
> > Rusty Russell wrote:
> > > You mean backend?  For networking it makes a great deal of sense.  For
> > > block it makes far less sense (COW, weird formats, etc).
> > 
> > For block you probably want both:  userspace driver which can handle all
> > sorts of funny image files, and a kernel driver doing a 1:1 mapping to a
> > block device (lvm volume).
> > 
> 
> Interestingly, once you have the kernel driver that maps a block device,
> you can do most of the useful user scenarios by means of /dev/loop
> and/or device mapper.

If/when the 'DMLoop'[1] target for device mapper gets finished/merged that 
could be a viable alternative to traditional loop devices

Dan.

[1]  http://sources.redhat.com/lvm2/wiki/DMLoop
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