Create 15_migrate_lun_wwid.sh

change original lun wwid to the new one after migration.

usr/share/rear/finalize/GNU/Linux/15_migrate_lun_wwid.sh

@@ -0,0 +1,47 @@
+# migrate lun_wwid_mapping
+
+# skip if no mappings
+test -s "$LUN_WWID_MAP" || return 0
+
+Log "TAG-15-migrate-wwid: $LUN_WWID_MAP"
+
+# create the SED_SCRIPT
+SED_SCRIPT=""
+while read old_wwid new_wwid device ; do
+        SED_SCRIPT="$SED_SCRIPT;/${old_wwid}/s/${old_wwid}/${new_wwid}/g"
+done < <(sort -u $LUN_WWID_MAP)
+
+# debug line:
+Log "$SED_SCRIPT"
+
+# now run sed
+pushd $TARGET_FS_ROOT >&8
+# the funny [] around the first letter make sure that shopt -s nullglob removes this file from the list if it does not exist
+# the files without a [] are mandatory, like fstab
+for file in 	[e]tc/elilo.conf \
+		          [e]tc/fstab 
+	do
+
+  #[[ -d "$file" ]] && continue # skip directory
+	[[ ! -f "$file" ]] && continue # skip directory and file not found
+	# sed -i bails on symlinks, so we follow the symlink and patch the result
+	# on dead links we warn and skip them
+	# TODO: maybe we must put this into a chroot so that absolute symlinks will work correctly
+	if test -L "$file" ; then
+		if linkdest="$(readlink -f "$file")" ; then
+			# if link destination is residing on /proc we skip it silently
+			echo $linkdest | grep -q "^/proc" && continue
+			LogPrint "Patching '$linkdest' instead of '$file'"
+			file="$linkdest"
+		else
+			LogPrint "Not patching dead link '$file'"
+			continue
+		fi
+	fi
+
+        LogPrint "Patching file '$file'"
+	sed -i "$SED_SCRIPT" "$file"
+	StopIfError "Patching '$file' with sed failed."
+done
+
+popd >&8