Synnefo » snf-ganeti

def ListVolumes(opts, args):

  """List logical volumes on node(s).

  """

  if opts.output is None:

    selected_fields = ["node", "phys", "vg",

                       "name", "size", "instance"]

  else:

    selected_fields = opts.output.split(",")

  op = opcodes.OpQueryNodeVolumes(nodes=args, output_fields=selected_fields)

  output = SubmitOpCode(op)

  mlens = [0 for name in selected_fields]

  format_fields = []

  unitformat_fields = ("size",)

  for field in selected_fields:

    if field in unitformat_fields:

      format_fields.append("%*s")

    else:

      format_fields.append("%-*s")

  separator = opts.separator

  if "%" in separator:

    separator = separator.replace("%", "%%")

  format = separator.join(format_fields)

  for row in output:

    for idx, val in enumerate(row):

      if opts.human_readable and selected_fields[idx] in unitformat_fields:

        try:

          val = int(val)

        except ValueError:

          pass

        else:

          val = row[idx] = utils.FormatUnit(val)

      mlens[idx] = max(mlens[idx], len(val))

  if not opts.no_headers:

    header_list = {"node": "Node", "phys": "PhysDev",

                   "vg": "VG", "name": "Name",

                   "size": "Size", "instance": "Instance"}

    args = []

    for idx, name in enumerate(selected_fields):

      hdr = header_list[name]

      mlens[idx] = max(mlens[idx], len(hdr))

      args.append(mlens[idx])

      args.append(hdr)

    logger.ToStdout(format % tuple(args))

  for row in output:

    args = []

    for idx, val in enumerate(row):

      args.append(mlens[idx])

      args.append(val)

    logger.ToStdout(format % tuple(args))

  return 0

           [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT],

  'volumes': (ListVolumes, ARGS_ANY,

              [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT],

              "[<node_name>...]", "List logical volumes on node(s)"),