[attack]

No, but it will notify you of a problem. However, I suspect that smartmontools would do an even better job of notifying you of a problem before it even occurs.

If you want something that will actually protect against bit level errors well, generate some extra data using an appropriate Error Correcting Code for your important archives/files. Something like what par2repair generates. This is incredibly slow compared to simple erasure codes like RAID uses, though. There are some filesystems that do this for you automatically, I wrote one:) Actually, other than that I don't know of any filesystems that do this.

If the above is impractical for performance reasons, Google recommends mirroring everything on three disks...