QA output created by 252 Format and mount Create the original files Compare files ec8bb3b24d5b0f1b5bdf8c8f0f541ee6 SCRATCH_MNT/test-252/file2 CoW and unmount write missed bytes expect 8388608 got 0 Compare files 3ed86318f4ff8da26c1c2a6e3041f9be SCRATCH_MNT/test-252/file2 Check for damage