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List: netbsd-tech-kern
Subject: Re: WD_SOFTBADSECT usage ?
From: Manuel Bouyer <bouyer () antioche ! eu ! org>
Date: 2005-09-28 17:37:43
Message-ID: 20050928173742.GA1001 () antioche ! eu ! org
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On Wed, Sep 28, 2005 at 01:52:27AM -0400, davef1624@aol.com wrote:
>
> We're currently using a fairly 'old' wd.c driver & 1.6 NetBSD kernel --
> from Nov 1, 2002 to be exact.
>
> I'm wondering if there are any critical bug fixes (to either wd.c,
> ata*, pciide* drivers) that might impact
> disk driver/subsystem reliability and/or error recovery since this date?
Probably, but if you don't have problems, I'm not sure why you worry :)
>
> One fix that I noticed was the WD_SOFTBADSECT automatic bad-sector list
> management on Apr 15, 2003
> (Revision 1.241 of wd.c).
>
> This fix appears to improve the error recovery of the disk driver by
> not attempting *repeated* reads
> on failed (unrecoverable) disk blocks.
>
> What are the tradeoffs here? Can I safely turn on this feature?
Probably, as long as you're aware what you need to do to remap a bad sector.
--
Manuel Bouyer <bouyer@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
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