# Use the dependencies to order device creation and generate code for them. # LAYOUT_CODE is the script to recreate the disk layout (diskrestore.sh). save_original_file "$LAYOUT_CODE" # Initialize diskrestore.sh: cat <<EOF >"$LAYOUT_CODE" #!/bin/bash LogPrint "Start system layout restoration." mkdir -p $TARGET_FS_ROOT if create_component "vgchange" "rear" ; then lvm vgchange -a n >/dev/null component_created "vgchange" "rear" fi set -e set -x EOF # Populate diskrestore.sh with further code to (re)-create all disk layout components: all_done= while [ -z "$all_done" ] ; do # Cycle through all components and find one that can be created. willdodev= willdotype= cp "$LAYOUT_TODO" "${LAYOUT_TODO}.tmp" while read status thisdev type; do # Test if all dependencies are already created. Debug "Testing $thisdev for dependencies..." deps=($(grep "^$thisdev\ " "$LAYOUT_DEPS" | cut -d " " -f "2")) Debug "deps (${#deps[@]}): ${deps[*]}" donedeps=0 for dep in "${deps[@]}" ; do if grep -q "done $dep " "$LAYOUT_TODO.tmp"; then let donedeps++ fi done if [ ${#deps[@]} -eq $donedeps ] ; then Debug "All dependencies for $thisdev are present, processing..." willdodev="$thisdev" willdotype="$type" break fi done < <(grep "^todo" "$LAYOUT_TODO") rm "$LAYOUT_TODO.tmp" # Write the code to create a device. if [ -n "$willdodev" ] ; then create_device "$willdodev" "$willdotype" mark_as_done "$willdodev" else # No device to be created, no additional dependencies can be satisfied. all_done="y" fi done