1. get connection settings from command line:
    ./ “dbi:Pg:dbname=depesz;host=;port=12345" depesz
  2. calculate only for public schema (can be easily changed)
  3. distribute indexes as well – always put indexes on another tablespace than table
  4. add comment in generated file about total filesizes in tablespaces *after* migration – so it will be clearer on what to move

svn is located here.