From owner-freebsd-current  Fri Mar 31  3:40:34 2000
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Date: Fri, 31 Mar 2000 13:39:59 +0200
From: Rainer Hurling <rhurlin@gwdg.de>
Organization: Institut fuer Forstzoologie und Waldschutz
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To: Leif Neland <leifn@neland.dk>
Cc: current@FreeBSD.ORG
Subject: Re: Reading from bad disk ?
References: <Pine.BSF.4.05.10003290856560.31161-100000@arnold.neland.dk>
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Leif Neland wrote:
> 
> > It seems Warner Losh wrote:
> ...
> > > mount it in front of the drive to get it to run at  a reasonable
> > > temperature.  W/o the fan, it was running at 58C or so.  With the fan
> > > it runs at 39C or so.  I've included the script that I use to find
> > > this information out.  Ken Merry sent it to me.  It works on some IBM
> > > drives.
> > >
> > > Warner
> > >
> > > #!/bin/sh
> > >
> > > TEMPC=`camcontrol cmd -v -n da -u 0 -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 $TEMPC C"
> >
> Tried this:
> #!/bin/sh
> 
> TEMPC=`camcontrol cmd -v -n da -u 2 -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 $TEMPC C"
> 
> I.e. replaced -u 0 with -u 2, because unit 2 is an IBM:
> 
> ncr0: <ncr 53c810 fast10 scsi> port 0xd100-0xd1ff mem 0x20000000-0x200000ff irq 11 at device 1.0 on pci0
> ncr0: driver is using old-style compatability shims
> da1 at ncr0 bus 0 target 1 lun 0
> da0 at ncr0 bus 0 target 0 lun 0
> da2 at ncr0 bus 0 target 2 lun 0
> da2: <IBM DCAS-34330 S65A> Fixed Direct Access SCSI-2 device
> da2: 10.000MB/s transfers (10.000MHz, offset 8)
> da2: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C)
> 
> But I get this:
> 
> camcontrol: error sending command
> (pass2:ncr0:0:2:0): LOG SENSE. CDB: 4d 0 76 0 0 0 0 0 20 0
> (pass2:ncr0:0:2:0): ILLEGAL REQUEST asc:24,0
> (pass2:ncr0:0:2:0): Invalid field in CDB
> dc: stack empty
> The temperature is: 33.80 F  C
> 
> Does this simply mean this drive does not support temperature measurement,
> or should something more be changed to use dev da2 instead of da0?
> 
> I'm running a week or so old current.
> 
> Leif
> 
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Have had same Problem with my DCAS-34330's. Having a look in IBM's
product specification at
http://www.storage.ibm.com/techsup/hddtech/prodspec/dcas_spw.pdf,
chapter 7.8 and others. It seems there is no information logging in this
type of harddisk drive?!

Rainer


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