[collectd] Onewire Plugin

Phil White manx.biz at googlemail.com
Tue Jan 17 14:19:23 CET 2012

Hi All,

Thanks Tomas - all is working.
I'm afraid I didn't go with your patch in the end (mainly because I lost
the ability to automatically read a sensor without specifically including
the path location in the configuration). However, it pointed me in a
direction which enabled me to cobble together a working solution.

Apart from a very minor patch to the onewire module, most of the time was
spent on OWFS. i really didn't like the way this made the readings
available (under a sub-directory). Reading the comments, I suspect that
this is a OWFS design problem, rather than collectd.

If ever I get the time, I might look into this a bit more. Since i am
looking at a large system, hints & tips prior to this welcomed.

Best regards,


On 13 January 2012 17:36, Phil White <manx.biz at googlemail.com> wrote:

> Hi Tomas,
> Thanks - I'll have a look over the weekend, and let you know how I get on.
> Cheers
> On 13 January 2012 16:52, Tomas <tomasamot at googlemail.com> wrote:
>>  Hi Phil,
>> you could use my patch  - see
>> http://mailman.verplant.org/pipermail/collectd/2011-November/004810.html
>> This would solve your problem with device family 28 (had the same
>> problem).
>> For the other device with 7E you can use the other option which offers
>> the patch - to use "direct accss" by specifying the whole OWFS path (also
>> documented in the patch).
>> Or just use it as an inspiration :-)
>> Best regards,
>> Tomas
>> On 13/01/2012 14:55, Phil White wrote:
>> Hello all,
>> Long ago, I looked at collectd and 1-wire monitoring, and never
>> progressed because I had problems with owfs, and because of the plugin's
>> 'experimental' status (though I do use collectd for other monitoring).
>> I revisited the issue the other day, and still can't get things to work
>> (though for different reasons).
>> I have DS18B20 as my temperature sensors, rather than the DS18S20 that
>> the plugin appears to recognise. These report themselves as a device with
>> the prefix '28', rather than 10 - therefore collectd does not record data
>> from these sensors.
>> Now, I'd rather like to have a play with the plugin, and attempt to get
>> this working. Rather than just submit a request, I'd rather like to get my
>> hands dirty, and fix it myself. Just because I have never done any coding
>> in C really shouldn't stop me, should it?! Another reason being that I also
>> have a device prefix '7E', which is somewhat different, and I'd also like
>> to see this one recognised.
>> Therefore, can someone offer some 'beginners tips' as to how I'm going to
>> start on the '28' issue - advice & info? Which files, and what I need to do
>> in order not to break anything?
>> Many thanks,
>> Phil
>> _______________________________________________
>> collectd mailing listcollectd at verplant.orghttp://mailman.verplant.org/listinfo/collectd
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