QA output created by 283
wrote 131072/131072 bytes at offset 0
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 65536/65536 bytes at offset 65536
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Creating snapshot and a send stream for it...
At subvol SCRATCH_MNT/snap
Creating a new filesystem to receive the send stream...
At subvol snap
Verifying data matches the original filesystem...
OK

fiemap of file foo:

0: [0..255]: shared|last

fiemap of file bar:

0: [0..127]: shared
1: [128..255]: shared|last

fiemap of file baz:

0: [0..127]: shared
1: [128..255]: shared|last