--- /dev/null
+#!/usr/bin/perl
+
+my $rrddir = "/var/log/rrd";
+my @files = `cd $rrddir && ls class_* `;
+
+if ( -e "$rrddir/migrated" ){print "Already migrated rrd files -> exit.\n";exit 1;}
+
+system("/etc/init.d/collectd stop");
+system("/usr/local/bin/qosctrl stop");
+
+foreach (@files){
+ chomp($_);
+ my @lines = `rrdtool dump $rrddir/$_`;
+
+ my $fromhere = 0;
+ my @newlines = "<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>
+ <step> 10 </step> <!-- Seconds -->
+ <lastupdate> </lastupdate>
+
+ <ds>
+ <name> bytes </name>
+ <type> COUNTER </type>
+ <minimal_heartbeat> 20 </minimal_heartbeat>
+ <min> 0.0000000000e+00 </min>
+ <max> NaN </max>
+
+ <!-- PDP Status -->
+ <last_ds> </last_ds>
+ <value> </value>
+ <unknown_sec> 0 </unknown_sec>
+ </ds>
+
+<!-- Round Robin Archives --> <rra>
+ <cf> AVERAGE </cf>
+ <pdp_per_row> 1 </pdp_per_row> <!-- 10 seconds -->
+
+ <params>
+ <xff> 5.0000000000e-01 </xff>
+ </params>
+ <cdp_prep>
+ <ds>
+ <primary_value> </primary_value>
+ <secondary_value> NaN </secondary_value>
+ <value> NaN </value>
+ <unknown_datapoints> 0 </unknown_datapoints>
+ </ds>
+ </cdp_prep>
+ <database>
+";
+ foreach (@lines){
+ if ( $_ =~ /\<database\>/ ){
+ $fromhere = 1;next;
+ }
+ if ( $_ =~ /\<\/database\>/ ){
+ $fromhere = 0;next;
+ }
+ if ( $fromhere eq "0" ){
+ next;
+ }else{
+ my @t = split(/<v>/,$_);
+ push(@newlines,$t[0]."<v>".$t[1]."</row>\n");
+ }
+ }
+push(@newlines," </database>
+ </rra>
+</rrd>");
+open(DATEI, ">/tmp/rrd.xml") || die "Unable to create temp file";
+print DATEI @newlines;
+close(DATEI);
+
+system("rm -f $rrddir/$_");
+system("rrdtool restore -f /tmp/rrd.xml $rrddir/$_");
+print "$_ ... resized\n";
+}
+
+system("/etc/init.d/collectd start");
+system("/usr/local/bin/qosctrl start");
+system("touch $rrddir/migrated");
+exit 0;