Re: [Qemu-devel] [PATCH 0/7] introduce BSD-licensed block driver for "raw"

[Anthony Liguori <aliguori@us.ibm.com>]

Laszlo Ersek <lersek@redhat.com> writes:

> Paolo asked me to write such a driver based on his textual specification
> alone. The first patch captures his email in full, the rest re-quotes
> parts that are being implemented.
>
> The tree compiles at each patch. The series passes "make check-block".
>
> "block/raw.c" is not removed because I wanted to keep it out of my
> series and out of my brain.
>
> Disclaimer: I couldn't care less if the raw block driver was public
> domain or AGPLv3+, as long as it qualifies as free software. I'm only
> trying to do what Paolo asked of me.

Generally speaking, rewriting parts of QEMU to be !GPL is something I
would strongly, strongly oppose.

I believe that Paolo had a good reason for this though.  I suppose the
logic is that we want to expose a "libqemublock" that libvirt can use such
that it can stop parsing qcow2 files.

Now libvirt just needs LGPLv2+, right?

Is the JSON mode of qemu-img info not sufficient for libvirt's purposes?

Is there additional logic behind having a libqemublock?

Regards,

Anthony Liguori

>
> Laszlo Ersek (7):
>   add skeleton for BSD licensed "raw" BlockDriver
>   raw_bsd: emit debug events in bdrv_co_readv() and bdrv_co_writev()
>   raw_bsd: add raw_create()
>   raw_bsd: introduce "special members"
>   raw_bsd: add raw_create_options
>   raw_bsd: register bdrv_raw
>   switch raw block driver from "raw.o" to "raw_bsd.o"
>
>  block/Makefile.objs |    2 +-
>  block/raw_bsd.c     |  186 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 187 insertions(+), 1 deletions(-)
>  create mode 100644 block/raw_bsd.c