QA output created by 276
Number of non-shared extents in the whole file: 2000
Create a snapshot of 'SCRATCH_MNT' in 'SCRATCH_MNT/snap'
Number of shared extents in the whole file: 2000
wrote 65536/65536 bytes at offset 524288
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 65536/65536 bytes at offset 261095424
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Number of non-shared extents in the whole file: 2
Number of shared extents in the whole file: 1998
Number of non-shared extents in range [512K, 512K + 64K): 1
Number of non-shared extents in range [249M, 249M + 64K): 1
Delete subvolume (commit): 'SCRATCH_MNT/snap'
Number of non-shared extents in the whole file: 2000