Hi Doma, list, On 09/10/2010 05:02 AM, Molnar Domokos wrote:
> Hi, > > I have just read the thread *owfs-mounted directory fails first time > after inactivity period > <http://sourceforge.net/mailarchive/message.php?msg_name=4C7825D1.2070809%40chapus.net> > *and may have something related to it. I also have additional information related to this -- I am now polling the sensors every five minutes so the TCP connection from owfs to owserver is not timing out, as described in the above thread, and things are pretty stable. Before finishing my implementation, though, I played with the alias feature: http://owfs.org/index.php?page=aliases and that *was* causing the same stability problems described in the above thread, but in a different way, i.e. I sniffed traffic on the wire and the TCP connection was not dying, if I remember correctly, but still my sensors would disappear from the owfs-mounted directory every now and then. I didn't troubleshoot any further, and just stopped using OWFS aliases (handled the 1-wire address to sensible sensor name matter in the script that polls sensor data), and this made the instability problem go away. So, a shot in the dark -- are you using OWFS aliases? Based on a quick look at your log entries below it doesn't seem like it but I thought I'd ask just in case and also take this as a chance to document my experience with the alias feature since I had not done that yet. Cheers, Eloy Paris.- > > I have been running owfs lights out to control my HVAC at home for about > 3 years, I have switches and temp sensors on it, and it works in "real > time" so I had to resolve the stability issue with programming around. > > My HVAC controller reads the temperature of the furnace in a loop as it > needs to act fast on temperature changes by switching on/off the gas > burner and water pumps and magnetic valves. As a result I have a fair > bit of experience with the stability of owfs. > > It is not very stable so I my controller does the following: > Level1: The code catches the read/write exception of owfs provided files > and retries max. 10 times, if does not succeed then > Level2: Kills owfs with -9, umounts /mnt/1wire and restarts owfs > If Level2 error happens it logs the event. > > Level1 error happens about every other day, while Level2 happens less > frequently but it really is random. > > Here is the log for Level2 events from 1st of August this year. As you > can see sometimes it goes on for 10, even 20 days w/o Level2 errors, > then it just happens. Nothing changes in the usage pattern of the > network or the controller, all sensors are continuously read, and all > PIOs are written. > > The exceptions are mostly "No such file or directory" but sometimes > "Software caused connection abort" happens too. > > It runs on a CentOs 5.4., with owfs 2.7p39, with zero caching as I need > the new values every time. > > > LOGITEM BEGIN @Mon Aug 2 22:14:07 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ECONNABORTED: Software caused connection > abort - /mnt/1wire/10.869724010800/temperature> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > LOGITEM BEGIN @Sat Aug 7 18:58:15 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ENOENT: No such file or directory - > /mnt/1wire/10.869724010800/temperature> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > LOGITEM BEGIN @Sun Aug 8 16:47:18 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ENOENT: No such file or directory - > /mnt/1wire/10.869724010800/temperature> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > LOGITEM BEGIN @Sat Aug 14 20:20:50 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ENOENT: No such file or directory - > /mnt/1wire/10.869724010800/temperature> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > LOGITEM BEGIN @Sun Aug 15 07:24:49 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ENOENT: No such file or directory - > /mnt/1wire/10.869724010800/temperature> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > LOGITEM BEGIN @Wed Aug 18 09:19:22 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ENOENT: No such file or directory - > /mnt/1wire/05.1AED31000000/PIO> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > LOGITEM BEGIN @Mon Sep 6 19:35:40 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ENOENT: No such file or directory - > /mnt/1wire/05.200232000000/PIO> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > LOGITEM BEGIN @Thu Sep 9 13:47:47 2010 > Logging reason: Owfs restart logging > Active state: Off > Exception message: #<Errno::ENOENT: No such file or directory - > /mnt/1wire/10.24E323010800/temperature> > State history : (Off)->(Off)->(Off)->(Off)->(Off) > LOGITEM END > > Cheers, > Doma > ------------------------------------------------------------------------------ Automate Storage Tiering Simply Optimize IT performance and efficiency through flexible, powerful, automated storage tiering capabilities. 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