+# Path's to the vserver references images and stubs
+vrefdir=$PWD/vservers/.vref
+vstubdir=$PWD/vservers/.vstub
+
+# XXX: The vserver reference name should be passed in as an argument
+# rather than being hardcoded.
+vrefname=default
+
+# Make /vservers and default vserver reference image
+vref=${vrefdir}/${vrefname}
+install -d -m 755 ${vref}
+
+# locate the packages and groups file
+pkgsfile=$(pl_locateDistroFile ../build/ ${pldistro} vserver.pkgs)
+
+# Some of the PlanetLab RPMs attempt to (re)start themselves in %post,
+# unless the installation is running inside the BootCD environment. We
+# would like to pretend that we are.
+export PL_BOOTCD=1
+
+# Populate image with vserver-reference packages
+pl_root_setup_chroot ${vref} -k -f $pkgsfile
+
+systemvserver_count=$(ls ../build/config.${pldistro}/vserver-*.pkgs 2> /dev/null | wc -l)
+[ $systemvserver_count -gt 0 ] && for systemvserver in $(ls ../build/config.${pldistro}/vserver-*.pkgs) ; do
+ NAME=$(basename $systemvserver .pkgs | sed -e s,vserver-,,)
+
+ echo "--------START BUILDING system vserver ${NAME}: $(date)"
+
+ # "Parse" out the packages and groups for yum
+ systempackages=$(pl_getPackages ${pl_DISTRO_NAME} $systemvserver)
+ systemgroups=$(pl_getGroups ${pl_DISTRO_NAME} $systemvserver)
+
+ vdir=${vstubdir}/${NAME}
+ rm -rf ${vdir}/*
+ install -d -m 755 ${vdir}
+
+ # Clone the base vserver reference to the system vserver reference
+ (cd ${vref} && find . | cpio -m -d -u -p ${vdir})
+ rm -f ${vdir}/var/lib/rpm/__db*
+
+ # Communicate to the initialization script from which vref this stub was cloned
+ echo ${vrefname} > ${vdir}.cloned
+
+ # Install the system vserver specific packages
+ [ -n "$systempackages" ] && yum -c ${vdir}/etc/yum.conf --installroot=${vdir} -y install $systempackages
+ [ -n "$systemgroups" ] && yum -c ${vdir}/etc/yum.conf --installroot=${vdir} -y groupinstall $systemgroups
+
+ # 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
+
+ # step 2: figure out the new/changed files in ${vdir} vs. ${vref} and compute ${vdir}.changes
+ rsync -anv ${vdir}/ ${vref}/ > ${vdir}.changes
+ linecount=$(wc -l ${vdir}.changes | awk ' { print $1 } ')
+ let headcount=$linecount-3
+ let tailcount=$headcount-1
+ # get rid of the last 3 lines of the rsync output
+ head -${headcount} ${vdir}.changes > ${vdir}.changes.1
+ # get rid of the first line of the rsync output
+ tail -${tailcount} ${vdir}.changes.1 > ${vdir}.changes.2
+ # post process rsync output to get rid of symbolic link embellish output
+ awk ' { print $1 } ' ${vdir}.changes.2 > ${vdir}.changes
+ rm -f ${vdir}.changes.*