[Ipmitool-devel] Missing sensors on Intel

[Mark M. <ma...@cr...>]

I've just got a new server with an Intel S5000PSL motherboard. I'm 
trying and failing to get useful temperature readings out of it.

 > ipmitool sdr type Temperature
Baseboard Temp   | 30h | ok  |  7.1 | 20 degrees C
Front Panel Temp | 32h | ok  | 12.1 | 16 degrees C
P1 Therm Margin  | 99h | ok  |  3.1 | -52 degrees C
P2 Therm Margin  | 9Bh | ok  |  3.2 | -52 degrees C
P1 Therm Ctrl %  | C0h | ok  |  3.1 | 0 unspecified
P2 Therm Ctrl %  | C1h | ok  |  3.2 | 0 unspecified
Proc1 VRD Hot    | C8h | ok  |  3.1 |
Proc2 VRD Hot    | C9h | ok  |  3.2 |

The motherboard manual helpfully lists all of the BMC sensors available 
in a big table in 
ftp://download.intel.com/support/motherboards/server/s5000psl/sb/s5000psl_tps_rev_12.pdf  


According to that document, the CPU temperatures are available as sensor 
numbers 98h and 9Ah. However, neither 'ipmitool sensor' nor 'ipmitool 
sdr' produce CPU temperature readings at all. The relevant bit of 
'ipmitool -v sensor' is:

Sensor ID              : Processor 1 Stat (0x90)
 Entity ID             : 3.1
 Sensor Type (Discrete): Processor
 States Asserted       : Processor
                         [Presence detected]

Sensor ID              : Processor 2 Stat (0x91)
 Entity ID             : 3.2
 Sensor Type (Discrete): Processor
 States Asserted       : Processor
                         [Presence detected]

Sensor ID              : PCIe Link0 (0xa0)
 Entity ID             : 49.0
 Sensor Type (Discrete): Critical Interrupt

Sensor ID              : PCIe Link1 (0xa1)
 Entity ID             : 49.1
 Sensor Type (Discrete): Critical Interrupt

(interestingly, there's no mention of the 'P1 Therm Margin' that 'sdr 
type Temperature' claims is there).

AFAICT there's no way to query a sensor by ID, and 'ipmitool sensor get 
"Processor 1 Temp"' and related attempts all fail to give anything useful.

The product manual claims that the CPU temperature is available, so how 
do I get to it? I'm using ipmitool 1.8.8 on Debian 'etch', and I've 
downloaded and compiled 1.8.9 and got identical results.

-- 
Dr Mark Mackey
Cresset BioMolecular Discovery