From: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; PIL lib will report error because of picture information inconsistency, this error may because of qemu screenshot generation, work around this problem by load this image in advance to prevent it raise error in thumbnail generation. REF: http://stackoverflow.com/questions/12984426/ \ python-pil-ioerror-image-file-truncated-with-big-images Signed-off-by: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; --- src/kimchi/screenshot.py | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/kimchi/screenshot.py b/src/kimchi/screenshot.py index b17a3ce..5cfea96 100644 --- a/src/kimchi/screenshot.py +++ b/src/kimchi/screenshot.py @@ -174,6 +174,12 @@ class VMScreenshot(object): self._create_black_image(thumbnail) else: im = Image.open(thumbnail) + try: + # Prevent Image lib from lazy load, + # work around pic truncate validation in thumbnail generation + im.load() + except Exception as e: + kimchi_log.warning("Image load with warning: %s." % e) im.thumbnail(self.THUMBNAIL_SIZE) im.save(thumbnail, "PNG")