Re: [Freeipmi-devel] can't read tempeature info

[Albert Chu]

Hey Andy,

Yeah, I guess that could be.  I've had some other Poweredges laying
around before that didn't have thermal margin's before, so I guessed
these were not the case.  But they could be.

Al

On Tue, 2011-08-23 at 12:39 -0700, Andy Cress wrote:
> Al,
> 
> The negative sensor temp readings could be valid if it is a Memory or
> CPU Thermal Margin sensor.  From my Intel system, for example:
>   Full sensor   [001c]| snum 62 | P1 Therm Margin  | OK   | -59.00
> degrees C
>   Full sensor   [001d]| snum 63 | P2 Therm Margin  | OK   | -48.00
> degrees C
> The meaning of this is that it has 59 degrees of margin left before it
> reaches the threshold (0).  And actually more than that before it
> encounters a CPU ThermTrip.  
> 
> Andy
> 
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On
> Behalf Of Albert Chu
> Sent: Tuesday, August 23, 2011 1:00 PM
> To: Franco Brasolin
> Cc: address@hidden
> Subject: Re: [Freeipmi-devel] can't read tempeature info
> 
> Hi Franco,
> 
> The fact that you're getting some negative degrees in ipmitool means
> something is probably wrong with the IPMI firmware on your mobo.
> Something is definitely not right.
> 
> The first thing to try is to run ipmi-sensors w/ --bridge-sensors.  It's
> possible the sensors aren't on the main IPMI bus, so they need to be
> bridged to other devices on the motherboard.
> 
> As a second shot, this seems similar to a bug I saw on a HP machine.
> Could you try running with the "-W discretereading" flag w/
> ipmi-sensors.  Maybe that will fix the problem.  It would also be
> interesting to compare FreeIPMI's ipmi-sensors output to ipmitool's
> 'sensor list' output (ipmitool's assumptions are different in that code
> path).
> 
> If that doesn't help, could you send me the --debug output from
> ipmi-sensors.  I'd have to look into detail what is actually going on on
> this motherboard.
> 
> As a side note, you may be interested in the --entity-sensor-names
> option for ipmi-sensors.  It may make your output better for your
> motherboard.
> 
> Al
> 
> On Tue, 2011-08-23 at 06:47 -0700, Franco Brasolin wrote:
> > Hi all,
> > I need some help to read Temperature sensors on a Dell  PowerEdge R410
> > model name      : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz
> > # uname -a
> > Linux pc-xyz 2.6.18-238.1.1.el5 #1 SMP Wed Jan 19 11:06:36 CET 2011 
> > x86_64 x86_64 x86_64 GNU/Linux
> > 
> > If I try (from another host with freeipmi 1.06.beta0 installed) the 
> > following command:
> > 
> > # ipmi-sensors -V
> > ipmi-sensors - 1.0.6.beta0
> > 
> > # ipmi-sensors -h pc-xyz  -u user -p passw   | grep -i temp
> > 1   | Temp             | Temperature              | N/A        | C
> | N/A
> > 2   | Temp             | Temperature              | N/A        | C
> | N/A
> > 3   | Temp             | Temperature              | N/A        | C
> | N/A
> > 4   | Temp             | Temperature              | N/A        | C
> | N/A
> > 5   | Ambient Temp     | Temperature              | N/A        | C
> | N/A
> > 6   | Ambient Temp     | Temperature              | N/A        | C
> | N/A
> > 7   | Temp             | Temperature              | N/A        | C
> | N/A
> > 8   | Temp             | Temperature              | N/A        | C
> | N/A
> > 9   | Temp             | Temperature              | N/A        | C
> | N/A
> > 10  | Ambient Temp     | Temperature              | 21.00      | C
> | 
> > 'OK'
> > 11  | Planar Temp      | Temperature              | N/A        | C
> | N/A
> > 65  | CPU Temp Interf  | Temperature              | N/A        | N/A
> | N/A
> > 110 | Mem Overtemp     | Memory                   | N/A        | N/A
> | N/A
> > 
> > ie: only ambient temperature is available, while if I use ipmitool:
> > 
> > 
> > #  ipmitool -H pc-xyz -U user -P passw  sdr type temperature
> > Temp             | 01h | ok  |  3.1 | -57 degrees C
> > Temp             | 02h | ok  |  3.2 | -63 degrees C
> > Temp             | 05h | ok  | 10.1 | 19 degrees C
> > Ambient Temp     | 07h | ok  | 10.1 | 24 degrees C
> > Temp             | 06h | ok  | 10.2 | 30 degrees C
> > Ambient Temp     | 08h | ok  | 10.2 | 27 degrees C
> > Ambient Temp     | 0Eh | ok  |  7.1 | 18 degrees C
> > Planar Temp      | 0Fh | ok  |  7.1 | 35 degrees C
> > IOH THERMTRIP    | 5Dh | ns  |  7.1 | Disabled
> > CPU Temp Interf  | 76h | ns  |  7.1 | Disabled
> > Temp             | 0Ah | ok  |  8.1 | 26 degrees C
> > Temp             | 0Bh | ok  |  8.1 | 23 degrees C
> > Temp             | 0Ch | unc |  8.1 | 44 degrees C
> > 
> > I obtain much more info.
> > What am I doing wrong ??
> > 
> > thank you very much for your help!
> > ciao
> > Franco
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
> > Freeipmi-devel mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/freeipmi-devel
-- 
Albert Chu
address@hidden
Computer Scientist
High Performance Systems Division
Lawrence Livermore National Laboratory