From: Thiemo Nagel <thiemo.nagel@ph.tum.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linux RAID Mailing List <linux-raid@vger.kernel.org>
Subject: Re: On the subject of RAID-6 corruption recovery
Date: Mon, 07 Jan 2008 10:28:14 +0100 [thread overview]
Message-ID: <4781F0AE.7030304@ph.tum.de> (raw)
In-Reply-To: <477ED321.6000708@zytor.com>
> What you call "pathologic" cases when it comes to real-world data are
> very common. It is not at all unusual to find sectors filled with only
> a constant (usually zero, but not always), in which case your **512
> becomes **1.
Of course it would be easy to check how many of the 512 Bytes are really
different on a case-by-case basis and correct the exponent accordingly,
and only perform the recovery when the corrected probability of
introducing an error is sufficiently low.
Kind regards,
Thiemo Nagel
next prev parent reply other threads:[~2008-01-07 9:28 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
2008-01-07 9:28 ` Thiemo Nagel [this message]
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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