QA output created by 612 Create file b wrote 2097152/2097152 bytes at offset 0 XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) Reflink copy from b to a Contents of b 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00200000 Write to a wrote 4096/4096 bytes at offset 0 XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1048576/1048576 bytes at offset 4096 XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) Contents of b now: 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00200000