> From: Tom Metro [mailto:[email protected]]
> 
> (Doesn't ZFS also employ overall file hashing to insure the integrity of
> a file? (Or is that the verification option you referred to?) If so,
> then that would likely thwart this attack vector.)

The data integrity hash is something much faster and weaker.  I forget
exactly what.  

If you enable dedup, I don't know if the sha256 is used instead of, or in
addition to the data integrity hash.

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