I use an "inittab" script -- it gets automatically restarted. (And a delay
loop).
Are you running your script against owserver using owshell? Can you tell
what the point of failure is? Is owserver still working after the "crash" --
can you access from another machine. It would be nice to find the underlying
problem.
Paul Alfille
On 3/12/07, Rob Conway <[EMAIL PROTECTED]> wrote:
I am using an NSLU2 (Unslung 6.8), I currently use a simple bash script
to gather 8 off 1wire variables and do some calc's before storing the data
in trend files. I have it scheduled in crontab to run every 1 minute. What
happens is that about ~3 times a month the NSLU2 grinds to a halt. It seems
that my script somehow screws up and I just fill up the slug with scripts
never finishing. I think its because it cannot access the 1wire file system
to read the data...
Is this the best way to handle scheduling of scripts, using a 1 minute
crontab entry ?
I was thinking to just use a loop in a single script and just sleep for 60
seconds...that way if it does screw up at least the NSLU2 will continue to
run. I could have another script testing a "PID entry" to make sure its
still running and if not just restart it automatically.
I know its slightly off topic however was keen to see if other NSLU2
-1wire users have implemented the same type of continuous monitoring and
what their maximum uptime was. The SLUG is lightly loaded and dedicated for
data monitoring with owfs, NTP, thhtpd, and rrdtool....I want to move onto
relay output control thus trying to sort this problem out for reliability
before I move into closed loop control.
*owfs version as seen from #ipkg list_installed*
owfs - 2.6p1-3 - 1-Wire filesystem (http://owfs.sf.net)
owlib - 2.6p1-3 - 1-wire library
fuse-utils - 2.6.0-pre2-3 - Fuse
################################################################
#!/bin/bash
### Force Simultaneous 1wire conversion ###
echo 1 >/tmp/1wire/simultaneous/voltage
echo 1 >/tmp/1wire/simultaneous/temperature
### Read 1wire data and convert into engineering units ##
PH=$(/opt/bin/awk '{printf "%4.2f\n",((($0-1)/1.6)+5.5)}'
/tmp/1wire/20.B71F05000000/volt.A)
US=$(/opt/bin/awk '{printf "%5.1f\n",($0*100)}'
/tmp/1wire/20.B71F05000000/volt.B)
TempAqua=$(/opt/bin/awk '{printf "%3.1f\n",((($0-1)*5)+20)}'
/tmp/1wire/20.B71F05000000/volt.C)
LITRES=$(/opt/bin/awk '{printf "%3.1f\n",(($0-2.900)*60)}'
/tmp/1wire/20.952A05000000/volt.D)
TempOut=$(/opt/bin/awk '{printf "%3.1f\n",($0)}'
/tmp/1wire/28.11BF97000000/temperature)
TempAmb=$(/opt/bin/awk '{printf "%3.1f\n",($0)}'
/tmp/1wire/28.D70598000000/temperature)
TempRes=$(/opt/bin/awk '{printf "%3.1f\n",($0)}'
/tmp/1wire/28.A6EE97000000/temperature)
Accum_flow=$(/opt/bin/awk '{printf "%d\n",($0/4100)}'
/tmp/1wire/uncached/1D.EBEF0900000034/counters.A)
### Calculations based upon Data ###
C12=$(/opt/bin/awk -v PH="$PH" '{printf "%3.1f\n",((3*$0)*(10^(7-PH)))}'
/public/kh_value)
Todayflow=$(/opt/bin/awk -v AF="$Accum_flow" '{printf "%d\n",(AF-$0)}'
/public/lastflow.txt)
Weekflow=$(/opt/bin/awk -v AF="$Accum_flow" '{printf "%d\n",(AF-$0)}'
/public/weekflow.txt)
#################################################################
cheers rob -Australia
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