+# Build the base Bootstrap filesystem
+echo "--------STARTING tar'ing PlanetLab-Bootstrap.tar.bz2: $(date)"
+# clean out yum cache to reduce space requirements
+yum -c ${vref}/etc/yum.conf --installroot=${vdir} -y clean all
+tar -cpjf PlanetLab-Bootstrap.tar.bz2 -C ${vref} .
+echo "--------FINISHED tar'ing PlanetLab-Bootstrap.tar.bz2: $(date)"
+