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Trimlog is what you do when cutting a fencepost to make a fence....

 

Lol..sorry.   You have a good question, I would like to see the answer. 

Bump!!!

I believe that fences creates a log each time it starts for debuging upload on crash.  There is a trimlog to truncate old, unsued, unneeded data.

What about the sued data?

Where's logs file?

@Zubaz

Why it open very frequently?

Seems it opens almost every 10 minute.

You acn email [email protected] and perhaps they can give you a better, more accurate response.

There's no answer.

I spoke to the dev today.  He confirmed what I suspected; Fences writes a log constantly while running.  Every hour it trims that log to keep in manageable but saves the last hour in case you need to send it to SD for debug/fixing.