Sensor alarm logging in IPMI SEL

[Patrick Venture]

On Mon, Aug 20, 2018 at 8:03 PM Lei YU <mine260309 at gmail.com> wrote:
>
> The existing phosphor-dbus-monitor should be able to do that.
> It requires a yaml config to define the watches and actions.
>
> See [witherspoon example][1], that watches the properties (ThrottleProcTemp,
> ThrottleProcPower, ThrottleMemTemp) on /org/open_power/control/occ0, and log
> the related events.
>
> 1. https://github.com/openbmc/openbmc/blob/master/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/events/witherspoon-events-policy/config.yaml
>
> On Tue, Aug 21, 2018 at 3:53 AM Benjamin Fair <benjaminfair at google.com> wrote:
> >
> > Hi all,
> >
> > We are looking for a way to log and report sensor events such as
> > over-temperature alarms and voltage regulator failures using the BMC.
> > The IPMI SEL seems like a good approach, as it matches industry
> > standards. There is already existing infrastructure for SEL in
> > OpenBMC, so implementing this seems like it would only require
> > modifying a daemon like sensord from the lm-sensors project to report
> > alarms over dbus.
> >
> > Does this sound reasonable? Has anyone else already started working on
> > something similar?

So the phosphor-hwmon daemon itself has the notion of a configured
threshold where if the value is beyond some point it sets the dbus
property for that sensor.  It doesn't yet, unless I've missed some
patches, respond to a hwmon sensor's alerts.  That may be a useful
feature to develop into phosphor-hwmon.

Patrick

> >
> > Thanks,
> > Benjamin