Bailey, Scott wrote:
Interestingly, I was just browsing this paper
http://www.cs.utk.edu/%7Eplank/plank/papers/CS-05-569.html which appears
to be quite on-topic for this discussion. I admit my eyes glaze over
during intensive math discussions but it appears tuned RS might not be
as horrible as y
Interesting paper, thanks. Unfortunately, decode bandwidth
when erasures are present (e.g. drives have failed) is not
discussed. This is by far the speed bottleneck for Reed-Solomon
and a potential hangup for a RS personality in md.
Jeff
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ssions to become non-academic for me, :-)
Scott
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of H. Peter Anvin
Sent: Thursday, December 29, 2005 1:41 PM
To: linux-raid@vger.kernel.org
Subject: Re: Adding Reed-Solomon Personality to MD, need help
Jeff Breidenbach wrote:
The fundamental problem is that generic RS requires table lookups even
in the common case, whereas RAID-6 uses shortcuts to substantially
speed up the computation in the common case.
If one wanted to support a typical 8-bit RS code (which supports a max of
256 drives, i
> The fundamental problem is that generic RS requires table lookups even
> in the common case, whereas RAID-6 uses shortcuts to substantially
> speed up the computation in the common case.
If one wanted to support a typical 8-bit RS code (which supports a max of
256 drives, including ECC drives) i
On Thu, Dec 29, 2005 at 10:40:33AM -0800, H. Peter Anvin wrote:
> It's not really in-between; generic RS RAID would be many times slower
> than either; however, unlike raid10 it could survive *any* m failures
> where m is the number of redundancy drives.
>
> The fundamental problem is that generic
Followup to: <[EMAIL PROTECTED]>
By author:"Mario 'BitKoenig' Holbe" <[EMAIL PROTECTED]>
In newsgroup: linux.dev.raid
>
> Hello,
>
> Nathan Lewis <[EMAIL PROTECTED]> wrote:
> > As part of my Master's thesis, I am working on adding a Reed-Solomon
> > personality to the existing linux RAID str
Hello,
Nathan Lewis <[EMAIL PROTECTED]> wrote:
> As part of my Master's thesis, I am working on adding a Reed-Solomon
> personality to the existing linux RAID structure and I would like some
Is there any progress in implementing a generic Reed-Solomon personality
in MD since this mail from 31 J
