+chmod 0000 "$__DEFAULT_VSERVERDIR"
+setattr --barrier "$__DEFAULT_VSERVERDIR"
+
+# Set the attribute to unlink so vclone does the right thing wrt to
+# conserving space by linking and not copying unified files.
+
+if [ -f /proc/virtual/info ] ; then
+ x=$[ 16#`awk '/^VCIKernel:/ { print $2 }' /proc/virtual/info` ];
+ y=$[ (x >> 9) & 1]
+ if test "$y" = 1 ; then
+ # COW support
+ find "$__DEFAULT_VSERVERDIR/.vref"/* -type f -print0 | xargs -0 setattr --iunlink
+ else
+ # no COW;
+ find "$__DEFAULT_VSERVERDIR/.vref"/* -type f -print0 | xargs -0 setattr --~iunlink
+ fi
+fi
+
+
+# Build reference images for system slices
+# xxx if several instances of systemslices get installed, only one gets instanciated
+for systemvserver in "$__DEFAULT_VSERVERDIR/.vstub/"*/*.cloned ; do
+ # e.g. NAME=planetflow
+ NAME=$(basename $systemvserver .cloned)
+ DIR=$(dirname $systemvserver)
+ # e.g. SLICEFAMILY=planetlab-f8-i386
+ SLICEFAMILY=$(cat $systemvserver)
+ # deduce the actual name used in .vref by replacing the first part of slice-family
+ # (pldistro) with the slice name
+ # e.g. VREFNAME=planetflow-f8-i386
+ VREFNAME=$(echo $SLICEFAMILY | sed -e "s,^[^-]*-,$NAME-,")
+
+ # Copy base reference image
+ if [ ! -d "$__DEFAULT_VSERVERDIR/.vref/$VREFNAME" ] ; then
+ echo -n $"Building VServer reference image for $NAME in $VREFNAME: " >&3 2>&4
+
+ # Build in temporary directory
+ mkdir -p "$__DEFAULT_VSERVERDIR/.vtmp"
+ TMP=$(mktemp -d "$__DEFAULT_VSERVERDIR/.vtmp/$NAME.XXXXXX")
+ mkdir -p "$__DEFAULT_VSERVERDIR/.vref"
+
+ # build the systemvserver from the one it was originally cloned from
+ REF="$__DEFAULT_VSERVERDIR/.vref/$SLICEFAMILY"
+ if [ -d "$REF" ] ; then
+ "$_VCLONE" "$REF"/ "$TMP"/
+ RETVAL=$?
+ else
+ RETVAL=1
+ fi
+
+ # merge the stub with the reference to get the system vserver
+ if [ $RETVAL -eq 0 ] ; then
+ (cd "$DIR/$NAME"/ && find . | cpio -m -d -u -p "$TMP"/)
+ RETVAL=$?
+ fi
+
+ # Clean RPM state
+ rm -f "$TMP/var/lib/rpm/__db"*