QA output created by 329
Format and mount
Create the original files
Compare files
1886e67cf8783e89ce6ddc5bb09a3944  SCRATCH_MNT/test-329/file1
1886e67cf8783e89ce6ddc5bb09a3944  SCRATCH_MNT/test-329/file2
CoW and unmount
write missed bytes expect 8388608 got 0
Compare files
1886e67cf8783e89ce6ddc5bb09a3944  SCRATCH_MNT/test-329/file1
d94b0ab13385aba594411c174b1cc13c  SCRATCH_MNT/test-329/file2
Check for damage