Re: Block-level CRC checks

Paul Schlie <schlie@comcast.net> writes:
> - yes, if you're willing to compute true CRC's as opposed to simpler
> checksums, which may be worth the price if in fact many/most data
> check failures are truly caused by single bit errors somewhere in the
> chain,

FWIW, not one of the corrupted-data problems I've investigated has ever
looked like a single-bit error.  So the theoretical basis for using a
CRC here seems pretty weak.  I doubt we'd even consider automatic repair
attempts anyway.
        regards, tom lane