iotests: Specify explicit backing format where sensible

[mirror_qemu.git] / tests / qemu-iotests / 037

diff --git a/tests/qemu-iotests/037 b/tests/qemu-iotests/037
index e6517acbd4cdf1d69a6711e24b6440d5589af726..e1187ac24a0b41a73734e708768c036b612c9e4c 100755 (executable)
--- a/tests/qemu-iotests/037
+++ b/tests/qemu-iotests/037
@@ -74,7 +74,7 @@ backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
 
 TEST_IMG="$TEST_IMG_SAVE"
 
-_make_test_img -b "$TEST_IMG.base" 6G
+_make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G
 
 echo
 echo "== COW in a single cluster =="