Re: [Qemu-devel] [PATCH 1/2] block: qemu-iotests - add basic ability to use binary sample images

[Stefan Hajnoczi <stefanha@gmail.com>]

On Thu, Sep 19, 2013 at 11:48:42PM -0400, Jeff Cody wrote:
> For image formats that are not "QEMU native", but supported for
> compatibility, it is useful to verify that an image created with
> the 'gold standard' native tool can be read / written to successfully
> by QEMU.
> 
> In addition to testing non-native images, this could also be useful to
> test against image files created by older versions of QEMU.
> 
> This provides a directory to store small sample images, for use by
> scripts in tests/qemu-iotests.
> 
> The MANIFEST file should be updated when a new image is added to the
> directory, to give some idea about the nature of the image and the
> data store therein.

I'd drop the MANIFEST because metadata tends to get out-of-sync or is
ignored.  The MANIFEST file can cause patch conflicts.  Test code or the
commit message can describe the contents of the image so I don't see the
need to create another copy of this information.

> diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
> index 28b39e4..d52f344 100644
> --- a/tests/qemu-iotests/common.rc
> +++ b/tests/qemu-iotests/common.rc
> @@ -91,6 +91,14 @@ _set_default_imgopts()
>      fi
>  }
>  
> +_use_sample_img()
> +{
> +    cp $SAMPLE_IMG_DIR/"$1" $TEST_DIR
> +    bunzip2 $TEST_DIR/"$1"

bzcat?  It eliminates the temporary copy.

> @@ -158,6 +166,7 @@ _cleanup_test_img()
>              rm -f $TEST_DIR/t.$IMGFMT
>              rm -f $TEST_DIR/t.$IMGFMT.orig
>              rm -f $TEST_DIR/t.$IMGFMT.base
> +            rm -f $TEST_DIR/$SAMPLE_IMG_FILE

It seems that qemu-iotests doesn't care for paths with spaces.