| QA output created by 225 | 
 | Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=1048576 | 
 | Formatting 'TEST_DIR/t.IMGFMT.not_base', fmt=IMGFMT size=1048576 | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT | 
 |  | 
 | === Testing fitting VMDK backing image === | 
 |  | 
 | QEMU X.Y.Z monitor - type 'help' for more information | 
 | (qemu) qemu-io overlay "read 0 512" | 
 | read 512/512 bytes at offset 0 | 
 | 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) | 
 |  | 
 | === Testing unrelated VMDK backing image === | 
 |  | 
 | QEMU X.Y.Z monitor - type 'help' for more information | 
 | (qemu) qemu-io overlay "read 0 512" | 
 | read failed: Invalid argument | 
 |  | 
 | === Testing non-VMDK backing image === | 
 |  | 
 | QEMU X.Y.Z monitor - type 'help' for more information | 
 | (qemu) qemu-io overlay "read 0 512" | 
 | read failed: Invalid argument | 
 | *** done |