phosphor-host-ipmid sensor SDRs on dbus

James Feist james.feist at
Wed Jul 24 07:48:05 AEST 2019

On 7/23/2019 1:40 PM, Patrick Venture wrote:
> I sent out an email indicating that we need to make sensors somewhat
> dynamic in phosphor-host-ipmid, and either using json or dbus was a
> reasonable approach.  I think json would be easier, but, for those
> using entity-manager, perhaps having the SDR information supported in
> some way associated with the dbus output might be useful.

In intel-ipmi-oem we were able to use the max / min values to generate 
an SDR. The only real hold ups for global adoption I believe were:
1. static sensor numbers were needed.
2. it was implemented using doubles for sensor numbers

If you had some configuration so that you could make these things 
non-generated if you wished, this might be useful to you.


> Idea: Given a sensor, read the SDR from dbus.
> Problem: association of a sensor id with a sensor on dbus -- maybe
> some search step is run once that caches everything and listens for
> change (similar to what James did with phosphor-pid-control)...
> I'm just throwing out ideas without full design changes because I want
> to get a sense of where the preferences lie before really digging into
> what changes are required.
> It would support both types (like dbus configuration in phosphor-pid-control).
> Patrick

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