fancontrol

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Jean Delvare wrote:

> Honestly, fan speed control under busybox doesn't strike me as the most
> needed feature.
Why? Many home nas'es and high performance routers have a fan.

>>> A third possibility which was discussed in the thread I mentioned above
>>> is a helper binary, linked with libsensors, which would take care of
>>> translating hwmonN names to libsensors chip names and back.
>> IMHO this is worst way.
> Why that?
It's look like a crutch.

>> ... If k8temp also present in /etc/modules it is
>> don't matter in which order this modules are written in this file.
>> acpitz always will hwmon0, k8temp -> hwmon1, and it8718 -> hwmon1 (if it
>> present in modules)
> I presume you mean it8718 -> hwmon2.
Yes.

>> (Really, on machine with lenny it87 loads via force_load in
>> initramfs-tools hook, so it87 is (always?) first.)
> What is force_load? And why do you need it?
force_load is function for initramfs-tools hook script (which runs at
build time). It adds a module (and its dependencies) to the initramfs
image and also unconditionally loads the module during boot.
I need it for speed down fan, because it very noisy. Why i need do it at
initrd time? This initrd waits for password for encrypted rootfs...

>> So hwmon names jumping it's not very big problem for me.
> Why are you reporting it then?
Because the problem exists. And i would like that it was not.

>> It is never happens unexpectedly. Only when i change or upgrade something.
> "change or upgrade something" is simply too vague for me to do anything
> useful with the information.
I said this in support of the above-said. I understand which my actions
(and real reason) leads to name changing. But i don't memorize it.

> There may be other similar daemons that can be extended.
So, now only fancontrol can manage fan speed.

> Or feel free to start your own, but then pretty please make its
> configuration file much more flexible and clear than fancontrol's one.
> Shouldn't be too hard ;) If you come up with something really good then I
> will be happy to kill the pwmconfig and fancontrol scripts in favor of your work.
OK.

>> May be should add possibility to define real path to device 
>> (/sys/devices/platform/it87.552)?
> This is a possibility, yes, and it shouldn't be too hard to implement.
> Want to give it a try?
See attachment.

> Not to say that it can't be done properly for hwmon devices. But do
> you have some concrete proposal? "Let's just use udev" doesn't tell me
> much.
I don't clearly understand how udev works.


-- 
sergio



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