Re: The missing RAID level

[H. Peter Anvin]

Followup to:  <045P8FJ12@xxxxxxxxxxxxxxxxxxxxx>
By author:    Hubert Tonneau <hubert.tonneau@xxxxxxxxxxxxxx>
In newsgroup: linux.dev.kernel
> 
> So, one very interesting possibility would be to have an extra RAID level that
> would do the following:
> assuming that you connect 5+1 partitions, then you get 5 md partitions, not a
> single one, with the following properties:
> . any read to mdX goes straight forward to reading the underlying partition.
> . any write goes staight forward to writting the underlying partition, but also
>   updates the parity on the extra partition.
> 

You have just described RAID 4.

	-hpa
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/