I am currently trying to get openHPI and openIPMI installed and working
on HP DL360. I have all of the packages installed (openIPMI 2.0.10,
openHPI-2.6.3 along with hp-openIPMI driver).
I am using the libipmi plugin. The IPMI driver is up and running along
with the openhpid daemon. When I use ipmitool to retrieve the sensors I
get all the sensors (about 28 of them). When I used the openhpi clients
(such as hpisensor etc), the count is 5. After turning on the debugging
in the ipmi plugin, here is what I noticed...
There are 28 entries of Entities ADDED (which matches with what ipmitool
returns). However, there are *ONLY* 5 entries of Entities which are
marked PRESENT.
During ipmi_discover_resources, events will be sent to the
infrastructure queue for *ONLY* the entities that are marked *PRESENT*.
Hence, hpisensor or any of the hpi clients or even for that matter the
apps that use SaHPI apis return only 5 as these are the only ones that
are inserted into the HPI data model.
I started looking at the openIPMI code (mainly entity.c and sensor.c)
and noticed the following:
1) ent_detect_presence is called to detect the presence of the entity
(following the IPMI spec). If neither the Presence Sensor exists nor
the Presence Bit sensor is set, detect_no_presence_sensor_presence is
called to try and see if the sensors (try_presence_sensors),
controls(try_presence_controls) detect something.
2) In try_presence_sensors, sensor_detect_send is called.
3) sensor_detect_send checks if ignore_if_no_entity bit is set in the
sensor SDR. If this bit is SET, we do not ping the sensor. If the whole
point is to detect the presence of the entity and probing the sensor is
required in order to do that - should we still be checking this BIT ? I
removed this check and now I am able to retrieve all the sensors even
with hpisensor client. But, want to make sure that I am not missing
something here...
Thanks
Venkat
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