Re: [Emc-developers] Problem Staying Up Overnight

[Jon E. <el...@pi...>]

Kenneth Lerman wrote:

>Looking at modutils in /etc/cron.daily it appears to just run
>insmod_ksymoops_clean.
>
>insmod_ksymoops_clean copies the current ksyms and modules (/proc/ksyms and
>/proc/modules) to separate files and deletes any copies of these files that
>have not been accessed in than two days.
>
>So, it doesn't actually access, delete, or change any modules.
>
>I have, though, deleted the modules you suggested and will see if I stay up
>overnight.
>  
>
As I already know, that won't work.  I had some log message timestamps 
that made
it pretty clear that just after the time cron.daily started at 06:25, 
something
re-installed parport_lp at 06:27, and that caused the problem when I did 
that
manually.  Yes, I don't see how modutils would do this, and manually 
executing
modutils had no effect.  I ran each of the scripts in cron.daily, and 
none of them
had any effect on EMC, or installed any kernel modules.  But, the log pretty
clearly shows right about that time that something DID re-install 
parport_lp.

After some more digging, I found that cups was running, and its logs seem to
indicate it was the troublemaker.  I'm thinking logrotate might actually 
restart
cups instead of just opening a new log file.  I don't want to have to 
disable
cups, so I probably need to find out how to make it leave the parallel port
alone.  Of course, one obvious stomp-hack would be to just rename the
file /lib/modules/....../parport_pc.o.gz to something else.
Jeff Epler gave a more gentle way to do it, and I am going to try this
tonight.  If that doesn't help, then I might try the rough method.

Jon