+ # If schema version changed, then back up the old version.
+ oldver=`$ovsdb_tool db-version "$OVSDB_SERVER_DB"`
+ if test "X$oldver" != "X$schemaver"; then
+ backup=$OVSDB_SERVER_DB.backup$oldver
+ action "Backing up $OVSDB_SERVER_DB in $backup before converting from schema version \"$oldver\" to \"$schemaver\"" true
+ cp "$OVSDB_SERVER_DB" "$backup"
+ fi
+