Hello, I use owfs since 2010. I had it running on an old pentium 133MHz PC driving my heating system in the previous house. I then switch to a Raspberry Pi. Then moved to a new house. In my new house I have 2 Raspberry Pi running owfs. 1 is driving the heating system + various temp, humidity, lcd. The second one monitors the swiming pool and drive the pump. Everything can be seen at my web site gcolin.hd.free.fr So the first thing I have to say (again) is a big thank to the developers. Because owfs is just awesome! Making 1wire life easy ;-) Many thanks for this. I am happy with my systems they are running almost perfectly. Why almost? Because sometimes I loose devices. I have been fighting with this for a very long time. First it was happening on the swimming pool system last year, I was accusing the hardware so I replaced the 2482 i2c bus master with a serial one, same problem, then a hobby-board hub, same problem, then changing the wiring same problem. I was banging my head against the wall. It was happening randomely, let's say once a week. Then since 6 months without any change (I'm back to 2482-100 bus master) I don't loose any devices. My trends are perfectly logged (I log every 5 minutes). But since a few months it has started on the other system! I lost a temp sensor. This system has a 2482-800 bus master (i2c -> 8 channels 1wire), I have separated this sensor to a bus where it is alone: same problem, changed its cable (because it was a pair in the same cable than another 1wire bus) same problem again. I decided to connect it to an arduino and have this arduino send the data to the pi by serial. It works fine but guess what? owfs is now loosing another sensor.... :-( Finally I decided to come here to do some reading and I see you are saying: " don't use the owfs-fuse interface for anything but demonstration purposes, as it has concurrency issues." Is this my problem? What concurrency issues are you talking about? Every owfs? or when owfs is used in conjonction with the kernel 1wire module (I never tried it)? My 2 systems are identical: Raspbian wheezy in full read only (I don't want to upgrade I want to keep it fixed when it's running no change to anything). Running owfs from Raspbian repo: 2.8p15. I use owserver and owfs fuse interface daemons (no owftpd, no owhttpd), access all my devices thru /mnt/1wire/ did this for 6 years. Is that wrong? Should I use owread, owwrite, owdir, etc? Please, if you can give me some light on this concurrency issues. Thanks a lot. -- Guy COLIN
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