From: "H. Peter Anvin" <hpa@zytor.com>
To: Thiemo Nagel <thiemo.nagel@ph.tum.de>
Cc: Linux RAID Mailing List <linux-raid@vger.kernel.org>
Subject: Re: On the subject of RAID-6 corruption recovery
Date: Fri, 04 Jan 2008 17:49:19 -0800 [thread overview]
Message-ID: <477EE21F.4070505@zytor.com> (raw)
In-Reply-To: <58669.88.217.65.202.1199496331.squirrel@www.e18.physik.tu-muenchen.de>
Thiemo Nagel wrote:
>
> That's why I was asking about the generator. Theoretically, this
> situation might be countered by using a (pseudo-)random pattern of
> generators for the different bytes of a sector, though I'm not sure
> whether it is worth the effort.
>
Changing the generator is mathematically equivalent to changing the
order of the drives, so no, that wouldn't help (and would make the
common computations a lot more expensive.)
-hpa
next prev parent reply other threads:[~2008-01-05 1:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-28 2:58 On the subject of RAID-6 corruption recovery H. Peter Anvin
2007-12-28 14:38 ` Bill Davidsen
2007-12-28 17:34 ` H. Peter Anvin
2008-01-04 23:59 ` Thiemo Nagel
2008-01-05 0:03 ` H. Peter Anvin
2008-01-05 0:41 ` Thiemo Nagel
2008-01-05 0:45 ` H. Peter Anvin
2008-01-05 1:25 ` Thiemo Nagel
2008-01-05 1:49 ` H. Peter Anvin [this message]
2008-01-07 9:28 ` Thiemo Nagel
2008-01-07 9:58 ` Mattias Wadenstein
2008-01-07 11:10 ` Thiemo Nagel
2008-01-07 17:20 ` H. Peter Anvin
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