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Date:      Wed, 24 Oct 2001 21:04:50 -0500
From:      "David W. Chapman Jr." <dwcjr@inethouston.net>
To:        Mike Silbersack <silby@silby.com>
Cc:        Dag-Erling Smorgrav <des@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/dev/ata ata-disk.c
Message-ID:  <20011024210450.B70640@leviathan.inethouston.net>
In-Reply-To: <20011024134810.C77798-100000@achilles.silby.com>
References:  <200110241824.f9OIOAn77833@freefall.freebsd.org> <20011024134810.C77798-100000@achilles.silby.com>

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On Wed, Oct 24, 2001 at 01:51:39PM -0500, Mike Silbersack wrote:
> 
> On Wed, 24 Oct 2001, Dag-Erling Smorgrav wrote:
> 
> > des         2001/10/24 11:24:10 PDT
> >
> >   Modified files:
> >     sys/dev/ata          ata-disk.c
> >   Log:
> >   Don't enable write cacheing on devices that don't support tagged queuing
> >   unless hw.ata.wc is set.
> >
> >   Approved by:	sos
> >   MFC after:	1 week
> 
> Why are we changing this again?  It was turned back on because without
> write caching many people reported huge slowdowns.  Has there since been
> an influx of reports of huge losses of data on all versions other than
> 4.3?
> 
> (Should I bring up the irony of the tagged-queueing IBM drives having a
> high failure rate? <g>)
> 
I have one and unfortunately I just found out about that also.  I 
hope I don't get hit by that problem!!!!

-- 
David W. Chapman Jr.
dwcjr@inethouston.net	Raintree Network Services, Inc. <www.inethouston.net>
dwcjr@freebsd.org	FreeBSD Committer <www.FreeBSD.org>

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