Date: Thu, 30 Mar 2006 21:47:11 +0300 From: "Panagiotis Christias" <christias@gmail.com> To: freebsd-scsi@freebsd.org Subject: Re: Temperature sensor on SCSI disks (IBM / Hitachi) Message-ID: <e4b0ecef0603301047ybd57de2k103353d71308c89@mail.gmail.com> In-Reply-To: <200603301243.k2UChHSp054250@lurza.secnetix.de> References: <20060329160129.GA95084@nargothrond.kdm.org> <200603301243.k2UChHSp054250@lurza.secnetix.de>
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On 3/30/06, Oliver Fromme <olli@lurza.secnetix.de> wrote: > Kenneth D. Merry <ken@freebsd.org> wrote: > > Oliver Fromme wrote: > > > I have the following SCSI disks in a server: > > > > > > <IBM DDYS-T18350M S96H> at scbus0 target 0 lun 0 (pass0,da0) > > > <IBM DDYS-T18350M S96H> at scbus0 target 1 lun 0 (pass1,da1) > > > > > > Searching the mailing lists revealed that IBM SCSI disks > > > (Hitachi nowadays) have a temperature sensor that can be > > > queried with a special (prioprietary) command like this: > > > [...] > > With some more recent IBM drives (possibly including DDYS drives, can'= t > > remember), you can get the temperature like this: > > > > camcontrol cmd da0 -v -u $i -c "4D 0 6F 0 0 0 0 0 20 0" -i 32 "s10 i1"= ` > > Cool, that one works. > > # camcontrol cmd da0 -v -c "4D 0 6F 0 0 0 0 0 20 0" -i 32 "s10 i1" > 33 > # camcontrol cmd da1 -v -c "4D 0 6F 0 0 0 0 0 20 0" -i 32 "s10 i1" > 36 > > Thanks very much! > > Do such commands exist for other drives or vendors, too? > > Best regards > Oliver Very interesting! I am wondering if it would be possible to get that kind of information if the disks are part of a hardware RAID. Our systems have IBM/Hitachi disks connected on RAID controllers (accessible using the amr driver). Any ideas? Thank you in advance, Panagiotis
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