On 23.11.2015 16:59, Kevin Wolf wrote:
> Creating an empty drive while specifying 'format' doesn't make sense.
> The specified format driver would simply be ignored.
> 
> Make a set 'format' option an indication that a non-empty drive should
> be created. This makes 'format' consistent with 'driver' and allows
> using it with a block driver that doesn't need any other options (like
> null-co/null-aio).
> 
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
>  blockdev.c                    | 5 +----
>  tests/qemu-iotests/iotests.py | 2 +-
>  2 files changed, 2 insertions(+), 5 deletions(-)

Besides the failing make check, the patch looks good.

Max