Notes about log2rrd.pl

 - If log2rrd.pl will not run because perl complains not finding 
   RRDs.pm in @INC, then... copy the contents of
   /usr/local/rrdtool-1.0.7/lib/perl to /usr/local/lib/perl5
   or somesuch...
     cd /usr/local/rrdtool-1.0.7/lib/perl 
     cp -r * /usr/local/lib/perl5
 - If you run log2rrd.pl to import a MRTG .log file and you use
   mrtg2nrg to import the corresponding MRTG .cfg stuff, then you
   should edit out lines 174 and 175 of log2rrd.pl
     #    my(@tuneparams) = ("$RRD", "-d", "ds0:COUNTER", "-d", "ds1:COUNTER");
     #    RRDs::tune(@tuneparams);
   and replace them with
         my(@tuneparams) = qw( $RRD 
           -d ds0:COUNTER -r ds0:input
           -d ds1:COUNTER -r ds1:output );
         RRDs::tune(@tuneparams);
   You can also alter a .rrd file for "ordinary" use with NRG 
   (like above) at the command line like so:
     rrdtool tune gauge.rrd -d ds0:COUNTER -r ds0:input \
       -d ds1:COUNTER -r ds1:output