Date: Fri, 18 Dec 1998 15:41:22 -0700 (MST) From: "Kenneth D. Merry" <ken@plutotech.com> To: searle@longacre.demon.co.uk (Michael Searle) Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Is this error as important as it looks: HARDWARE FAILURE asc:44,0 Message-ID: <199812182241.PAA81790@panzer.plutotech.com> In-Reply-To: <Marcel-1.46-1218210541-b49cjo5@longacre.demon.co.uk> from Michael Searle at "Dec 18, 98 09:05:41 pm"
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Michael Searle wrote... > On Fri 18 Dec, Kenneth D. Merry wrote: > > > > > You might want to check and see if it is running too hot. Here's a script > > that might do that, depending on whether your firmware supports it. (I've > > tried it on the 18G version of that drive, with firmware version 03B0, and > > it works fine.) > > > > ======================================== > > #!/bin/ksh > > > > TEMPC=`camcontrol cmd -n da -u 1 -c "4D 0 76 0 0 0 0 0 20 0" -i 32 "s9 i1"` > > > > TEMPF=`echo " 2 k $TEMPC 9 * 5 / 32 + p" | dc` > > > > echo "The temperature is: $TEMPF F" > > ======================================== > > > > I think the default temperature threshold (before it starts spewing errors) > > is 60C. Ideally, though, you'll want to run a good bit cooler than that. > > > > You'll need to change the '-u 1' above to '-u 0' for your drive. > > > > Ken > > Is this a general SCSI command that could be used on anything, or specific to > IBM drives / that model? It is specific to certain firmware revisions of certain IBM drives that have on-board temperature sensors. (No, I don't know which firmware revisions. You'll have to try it and find out, if your drive has a temperature sensor.) Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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