+ # Create a copy of the system vserver w/o the vserver reference files and make it smaller.
+ # This is a three step process:
+
+ # step 1: clean out yum cache to reduce space requirements
+ yum -c ${vdir}/etc/yum.conf --installroot=${vdir} -y clean all
+
+ [ -f ${vdir}/etc/yum.conf.rpmnew ] && mv -f ${vdir}/etc/yum.conf.rpmnew ${vdir}/etc/yum.conf
+
+ # step 2: figure out the new/changed files in ${vdir} vs. ${vref} and compute ${vdir}.changes