Date: Mon, 28 Oct 1996 13:18:01 -0600 (CST) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: rgrimes@GndRsh.aac.dev.com (Rodney W. Grimes) Cc: dufault@hda.hda.com, freebsd-scsi@freebsd.org Subject: Re: SCSI harddisk trouble: MEDIUM ERROR Message-ID: <199610281918.NAA16767@brasil.moneng.mei.com> In-Reply-To: <199610281855.KAA19511@GndRsh.aac.dev.com> from "Rodney W. Grimes" at Oct 28, 96 10:55:05 am
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> > Do think this happens often? > > Almost certainly all of the reported ``why doesn't ARRE/AWRE'' handle this > bad block are instances of this occuring, most likely a write operation that > went haywire and undetected. > > > Are there situations where > > "write and verify" support would be worth the probable huge > > performance hit? > > It would be really nice to have a knob to turn it on and off via sysctl, > Novell servers have had that knob since the 2.x days, Vax/VMS has had > it for as long as I can remember, yes, I do think this would be worth it > if we have a knob to twist. I can not speak with anything close to Rod's level of expertise on this, but I know I would feel more comfortable if we had a knob to twist too. That does not mean I would use it by default, but there are applications where you really are more interested in reliability than performance, and in such circumstances I would use it. Just an opinion, ... JG
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