QA output created by 197 === Copy-on-read === Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=4294967296 wrote 1024/1024 bytes at offset 3221225472 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) Formatting 'TEST_DIR/t.wrap.IMGFMT', fmt=IMGFMT size=4294967296 backing_file=TEST_DIR/t.IMGFMT backing_fmt=IMGFMT wrote 65536/65536 bytes at offset 1048576 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 131072/131072 bytes at offset 1048576 128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 0/0 bytes at offset 0 0 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2147483136/2147483136 bytes at offset 1024 2 GiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 3221226496 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) can't open device TEST_DIR/t.wrap.qcow2: Can't use copy-on-read on read-only device 2 GiB (0x80010000) bytes allocated at offset 0 bytes (0x0) 1023.938 MiB (0x3fff0000) bytes not allocated at offset 2 GiB (0x80010000) 64 KiB (0x10000) bytes allocated at offset 3 GiB (0xc0000000) 1023.938 MiB (0x3fff0000) bytes not allocated at offset 3 GiB (0xc0010000) No errors were found on the image. Images are identical. *** done