Le 21 February 2012 ? 07:54, Hugo Mills a écrit:
>    Some time ago, I proposed the following scheme:
> 
> <n>C<m>S<p>P
> 
>    where n is the number of copies (suffixed by C), m is the number of
> stripes for that data (suffixed by S), and p is the number of parity
> blocks (suffixed by P). Values of zero are omitted.
> 
>    So btrfs's RAID-1 would be 2C, RAID-0 would be 1CnS, RAID-5 would
> be 1CnS1P, and RAID-6 would be 1CnS2P. DUP would need a special
> indicator to show that it wasn't redundant in the face of a whole-disk
> failure: 2CN

Seems clear. However, is the S really relevant ?
It would be simpler without it, wouldn't it ?

-- 
Xavier Nicollet
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