QA output created by 279
Format and mount
Create the original files
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1886e67cf8783e89ce6ddc5bb09a3944  SCRATCH_MNT/test-279/file1
1886e67cf8783e89ce6ddc5bb09a3944  SCRATCH_MNT/test-279/file2
CoW and unmount
Compare files
1886e67cf8783e89ce6ddc5bb09a3944  SCRATCH_MNT/test-279/file1
Check for damage