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

=== 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