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qemu-iotests: Add basic ability to use binary sample images

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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.

Image files should be compressed with bzip2.

To use a sample image from a bash script, the _use_sample_img function
will copy and decompress the image into $TEST_DIR, and set $TEST_IMG to
be the decompressed sample image copy.  To cleanup, call
_cleanup_test_img as normal.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jeff Cody 2013-09-25 08:12:20 -04:00 committed by Kevin Wolf
parent 212774c5a5
commit 85edbd375b
3 changed files with 35 additions and 0 deletions
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11
tests/qemu-iotests/common.config
View file

@ -125,6 +125,17 @@ fi
export TEST_DIR
if [ -z "$SAMPLE_IMG_DIR" ]; then
SAMPLE_IMG_DIR=`pwd`/sample_images
fi
if [ ! -d "$SAMPLE_IMG_DIR" ]; then
echo "common.config: Error: \$SAMPLE_IMG_DIR ($SAMPLE_IMG_DIR) is not a directory"
exit 1
fi
export SAMPLE_IMG_DIR
_readlink()
{
if [ $# -ne 1 ]; then

16
tests/qemu-iotests/common.rc
View file

@ -91,6 +91,18 @@ _set_default_imgopts()
fi
}
_use_sample_img()
{
SAMPLE_IMG_FILE="${1%\.bz2}"
TEST_IMG="$TEST_DIR/$SAMPLE_IMG_FILE"
bzcat "$SAMPLE_IMG_DIR/$1" > "$TEST_IMG"
if [ $? -ne 0 ]
then
echo "_use_sample_img error, cannot extract '$SAMPLE_IMG_DIR/$1'"
exit 1
fi
}
_make_test_img()
{
# extra qemu-img options can be added by tests
@ -158,6 +170,10 @@ _cleanup_test_img()
rm -f $TEST_DIR/t.$IMGFMT
rm -f $TEST_DIR/t.$IMGFMT.orig
rm -f $TEST_DIR/t.$IMGFMT.base
if [ -n "$SAMPLE_IMG_FILE" ]
then
rm -f "$TEST_DIR/$SAMPLE_IMG_FILE"
fi
;;
rbd)

8
tests/qemu-iotests/sample_images/README Normal file
View file

@ -0,0 +1,8 @@
This is for small sample images to be used with qemu-iotests, intended for
non-native formats that QEMU supports for compatibility. The idea is to use
the native tool to create the sample image.
For instance, a VHDX image in this directory would be an image created not by
QEMU itself, but rather created by Hyper-V.
Sample images added here must be compressed with bzip2.