[lm-sensors] Fluctuating min/max/div causing alarms

[Dylan]

On Sat, Jan 29, 2011 at 12:31 PM, Jean Delvare <khali at linux-fr.org> wrote:

> On Sat, 29 Jan 2011 12:18:31 -0800, Dylan wrote:
> > On Sat, Jan 29, 2011 at 12:11 PM, Jean Delvare <khali at linux-fr.org>
> wrote:
> > > Never use native hwmon drivers together with IPMI. They access the same
> > > device in a non-synchronized manner, resulting in reads from / write to
> > > the wrong register. The problem your describe is most certainly caused
> > > by this. If your system uses IPMI, don't load native hwmon drivers.
> >
> > Thanks for your quick response. Your idea of conflicting reads/writes
> sounds
> > very plausible.
> > So, with UNRAID I am no explicitly loading any hwmon drives or IPMI
> drivers.
>
> You certainly do, as the w83627ehf driver (native hwmon driver) does
> not load automatically. Most likely, you ran sensors-detect, and it
> detected the chip and created a configuration file for you. As I am not
> familiar with UNRAID, you'll have to figure out by yourself which
> configuration file mentions the w83627ehf driver, and remove it. It's
> certainly somewhere under /etc, so a brutal:
> # grep -r w83627ehf /etc
> might answer the question.
>

UnRAID is a pre-compiled kernel and filesystem that gets loaded into RAM
each reboot. After digging through the .config provided I found it does
indeed have w83627ehf compiled into the kernel.

I recompiled the kernel with the module not loaded by default and -- ta daa
-- no more random alarms and warnings from my motherboard or the IPMI
interface. But of course I also don't get any sensor data via lm-sensors.


> > Can you give me a pointer as to how I might resolve this conflict?
>
> As you are apparently using IPMI on this machine, the best solution is
> to not load the w83627ehf driver. Which unfortunately means no
> integration with libsensors-based monitoring applications, but IPMI
> support comes at this price for the time being.
>
>
I did dig around to see if there was a ipmisensors module for my kernel but
unfortunately there is not. It seems I'm left with ipmitool for now which is
fine but I just don't get the nice lm-sensors integration I was hoping for.
Ah well. Thank goodness there is no more alarms :)



> > Is this an issue as how I've modified sensors3.conf or something more
> > fundamental with kernel modules?
>
> This is related to kernel modules, yes.
>
> --
> Jean Delvare
>


Thanks again Jean. You helped me solve my problem.

Dylan Parker
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