PSU (PMBus) fault monitoring / logging

[Patrick Voelker]

Thanks Vijay, that was really helpful.

I’m specifically looking for how the PMBus STATUS_WORD and sub-registers are monitored and represented in OpenBMC but it’s not jumping out at me.


From: Vijay Khemka [mailto:vijaykhemka at fb.com]
Sent: Friday, April 17, 2020 11:07 AM
To: Patrick Voelker; openbmc at lists.ozlabs.org
Subject: Re: PSU (PMBus) fault monitoring / logging

There are psusensor daemon who monitors these PSU sensors.

From: openbmc <openbmc-bounces+vijaykhemka=fb.com at lists.ozlabs.org> on behalf of Patrick Voelker <Patrick_Voelker at phoenix.com>
Date: Thursday, April 16, 2020 at 7:40 PM
To: "openbmc at lists.ozlabs.org" <openbmc at lists.ozlabs.org>
Subject: PSU (PMBus) fault monitoring / logging

Is there a module that instantiates sensors for PSU PMBus based faults after the entity-manager probes the busses and finds the PSUs by FRU

I'm looking for the method by which the faults are monitored and logged.  I see that there’s kernel hwmon support for PMBus but I’m trying to understand how IPMI sensors and logging tie in.

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