Re: [Xen-devel] [PATCH] blktap: qcow2 image format support

[Christoph Egger <Christoph.Egger@xxxxxxx>]

On Thursday 21 February 2008 09:57:48 Keir Fraser wrote:
> On 21/2/08 08:49, "Kevin Wolf" <kwolf@xxxxxxx> wrote:
> > This patch adds support for the qcow2 image format to blktap. It
> > consists mostly of qemu code, adapted to the blktap interfaces.
> > Snapshots and compressed images are supported.
> >
> > The qcow2 driver may be used by either specifying tap:qcow2 or by using
> > tap:qcow which will detect that you have a version 2 image and will call
> > the qcow2 driver.
>
> Is qcow2 so different from qcow1 that it really needs its own backend
> driver?

IMO, _all_ blktap drivers need some code refactoring. There is a lot of
duplicated code across all drivers
that can be moved into a blktap/drivers/blk-common.c.

Christoph

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