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

[Andy Cress]

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



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