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-rwxr-xr-xtests/qemu-iotests/2573
1 files changed, 2 insertions, 1 deletions
diff --git a/tests/qemu-iotests/257 b/tests/qemu-iotests/257
index 004a433b8b..e1e6077219 100755
--- a/tests/qemu-iotests/257
+++ b/tests/qemu-iotests/257
@@ -238,7 +238,8 @@ def compare_images(image, reference, baseimg=None, expected_match=True):
"""
expected_ret = 0 if expected_match else 1
if baseimg:
- assert qemu_img("rebase", "-u", "-b", baseimg, image) == 0
+ assert qemu_img("rebase", "-u", "-b", baseimg, '-F', iotests.imgfmt,
+ image) == 0
ret = qemu_img("compare", image, reference)
log('qemu_img compare "{:s}" "{:s}" ==> {:s}, {:s}'.format(
image, reference,