Revision ad24e046 scripts/gnt-instance

b/scripts/gnt-instance
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  """
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  instance = args[0]
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  disk = args[1]
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  try:
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    disk = int(disk)
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  except ValueError, err:
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    raise errors.OpPrereqError("Invalid disk index: %s" % str(err))
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  amount = utils.ParseUnit(args[2])
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  op = opcodes.OpGrowDisk(instance_name=instance, disk=disk, amount=amount,
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                          wait_for_sync=opts.wait_for_sync)

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