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Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA
From: |
Richard W.M. Jones |
Subject: |
Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA |
Date: |
Wed, 15 Nov 2017 20:24:40 +0000 |
User-agent: |
Mutt/1.5.20 (2009-12-10) |
On Wed, Nov 15, 2017 at 09:07:12PM +0100, Max Reitz wrote:
> On 2017-11-15 21:06, Gandalf Corvotempesta wrote:
> > 2017-11-15 20:59 GMT+01:00 Max Reitz <address@hidden>:
> >> Well, you can't just add support to qemu-img alone either. Every image
> >> format supported by qemu-img is one supported by qemu as a whole and
> >> thus needs a proper block driver that needs to support random accesses
> >> as well.
> >
> > I was talking about qemu-img convert, just to convert an XVA image to
> > something different, in a single pass, without having to extract the
> > tar.
>
> I know, but that doesn't work. qemu-img convert uses the normal
> general-purpose block drivers for that.
In any case there's no need as qemu/qemu-img can already access files
inside an uncompressed tarball using the offset/size support added to
the raw driver exactly for this purpose:
https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg03945.html
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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- Re: [Qemu-block] [Qemu-devel] [qemu-img] support for XVA, Max Reitz, 2017/11/15
- Re: [Qemu-block] [Qemu-devel] [qemu-img] support for XVA, Gandalf Corvotempesta, 2017/11/15
- Re: [Qemu-block] [Qemu-devel] [qemu-img] support for XVA, Max Reitz, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA,
Richard W.M. Jones <=
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Max Reitz, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Richard W.M. Jones, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Gandalf Corvotempesta, 2017/11/15
- Re: [Qemu-block] [Qemu-devel] [Libguestfs] [qemu-img] support for XVA, Richard W.M. Jones, 2017/11/15
- Re: [Qemu-block] [Qemu-devel] [Libguestfs] [qemu-img] support for XVA, Richard W.M. Jones, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Max Reitz, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Richard W.M. Jones, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Gandalf Corvotempesta, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Richard W.M. Jones, 2017/11/15
- Re: [Qemu-block] [Libguestfs] [Qemu-devel] [qemu-img] support for XVA, Gandalf Corvotempesta, 2017/11/15