Anyone with serious need for data integrity already uses RAID, so why add
brand new complexity for a solved problem?
RAID is great at recovering data, but not detecting errors. File system can
detect errors with checksum. What is missing is an API between layers for
filesystem to say "this sector is bad, go rebuild it."
This seems like a much more simple and useful thing than adding ECC into the
filesystem itself.
How about we switch to ecc, which would help with bit rot not sector
loss?
Interesting aspect.
Yes, we can implement ECC as a special crypto transform that inflates
data. As I mentioned earlier, it is possible via translation of key
offsets with scale factor > 1.
Of course, it is better then nothing, but anyway meta-data remains
ecc-unprotected, and, hence, robustness is not increased..
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