QA output created by 054

creating too large image (1 EB)
qemu-img: The image size is too large for file format 'qcow2' (try using a larger cluster size)
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1152921504606846976 

creating too large image (1 EB) using qcow2.py
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=4294967296 
qemu-img: Could not open 'TEST_DIR/t.qcow2': File too large
*** done