Re: [PATCH 1/4] md: Factor out RAID6 algorithms into lib/

H. Peter Anvin
2009-07-17T15:51:03Z

Ric Wheeler wrote:
>>
>> The main flaw, as I said, is in the phrase "as implemented by the
>> Jerasure library". He's comparing his own implementations of various
>> algorithms, not optimized implementations.
>>
>> The bottom line is pretty much this: the cost of changing the encoding
>> would appear to outweigh the benefit. I'm not trying to claim the Linux
>> RAID-6 implementation is optimal, but it is simple and appears to be
>> fast enough that the math isn't the bottleneck.
>
> Cost? Thank about how to get free grad student hours testing out things
> that you might or might not want to leverage on down the road :-)
>

Anyway... I don't really care too much. If someone wants to redesign
the Linux RAID-6 and Neil decides to take it I'm not going to object.
I'm also not very likely to do any work on it.

-hpa