I suppose an error correcting code like 256bit Hamming or Reed-Solomon  
can't substitute as reliable checksum on the level of default  
Fletcher2/4? If it can, it could be offered as alternative algorithm  
where necessary and let ZFS react accordingly, or not?

Regards,
-mg

On 12-août-08, at 08:48, "Anton B. Rang" <[EMAIL PROTECTED]> wrote:

> That brings up another interesting idea.
>
> ZFS currently uses a 128-bit checksum for blocks of up to 1048576  
> bits.
>
> If 20-odd bits of that were a Hamming code, you'd have something  
> slightly stronger than SECDED, and ZFS could correct any single-bit  
> errors encountered.
>
> This could be done without changing the ZFS on-disk format.
>
>
> This message posted from opensolaris.org
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