[vdr] Re: Workaround for UPT Errors

[Onno Kreuzinger <onnok@web.de>]

Frederick Page wrote:

> Hi everybody,
>
> I got so annoyed by the "unknown picture type" error (occured a lot
> here lately), that I wrote some little shell-script which worked fine
> here. Thought I'd share this with you.
>
> It's nothing fancy, suggestions for improvement are welcome, you might
> need to adjust some things for your distribution, anyway, here we go:
>
> /etc/crontab:
>
> # alle 1 Min. UPT prüfen
> */1  * * * *   root    /usr/local/bin/wache
>
>
> /usr/local/bin/wache:
>
> #!/bin/sh
>
> CFG=/etc/vdr/wache
> LOG=/var/log/syslog
> DFORM="+%Y%m%d%H%M"
>
> if test -f $CFG; then 
>    LASTDONE=`tail -n 1 $CFG`
> else
>    LASTDONE=`date $DFORM -d -1year`
>    echo $LASTDONE >>$CFG
> fi
>
> if grep "ERROR: unknown picture type" $LOG >/dev/null 2>&1; then
>    LASTUPT=`grep "ERROR: unknown picture type" $LOG 2>/dev/null | \
>    tail -n 1 | cut -d ' ' -f 1-3`
>    LASTUPT=`date $DFORM -d "$LASTUPT"`
>    diff=`echo "$LASTUPT - $LASTDONE" | bc`
>    if test $diff -ge 0;then
>       NOW=`date $DFORM`
>       echo $NOW >>$CFG
>       echo "Argl! Reset"
>       echo LASTUPT in Log: $LASTUPT
>       echo LASTDONE by wache: $LASTDONE
>       /usr/local/bin/vdrreset
>    fi
> fi
>
>
> /usr/local/bin/vdrreset:
>
> #!/bin/sh
>
> echo -n "killing runvdr ... "
> killall -9 runvdr && sleep 1
> echo "done"
> echo -n "killing vdr ... "
> killall -9 vdr && sleep 5
> echo "done"
> echo "make rmmod;sleep 1;start runvdr"
> cd /usr/local/src/DVB/driver;make rmmod
> sleep 1s
> /usr/local/src/VDR/runvdr &
>
>
> As I said: it's nothing fancy, but might prove to be useful for some
> of you. What it basically does: it checks /var/syslog for UPT-Errors
> and compares the last occurence to the last reset of VDR. The first
> time "wache" is called, it resets the VDR (may need improvement).
>
> Oh, it relies on "bc", because the shell was not able to process huge
> integer-numbers (timestamps) like 200312251734.
hi, well do you need that time resolutiuon ?
i used expr and the time-since-epoch format from date +%s.
this works if you substract as first operation, the logic works with a time 
delta over which a certain numbers of UPT's will trigger a restart of vdr.

i choose 3 syslog entries (i.e. 3 times the error is repeated in the syslog, 
this excludes the message "last line repeaded XXX times") over 240 seconds 
(4 min).
i mention this, since the dc/bc pakage is sometimes hatd to figure out for 
beginners (i.e. the rpm is namend dc, while you use/mention bc...)

Regards Onno


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