QA output created by 019
-Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944
+Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=6442450944
Filling base image
=== IO: pattern 42
No errors were found on the image.
Creating test image with backing file
-Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944 backing_file='TEST_DIR/t.IMGFMT.base'
+Formatting 'TEST_DIR/t.IMGFMT.orig', fmt=IMGFMT size=6442450944 backing_file=TEST_DIR/t.IMGFMT.base
Filling test image
=== IO: pattern 43