Revision 106441d9

b/lib/cmdlib.py
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    self.new_diskparams = objects.FillDict(cluster.diskparams, {})
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    if self.op.diskparams:
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      for dt_name, dt_params in self.op.diskparams.items():
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        if dt_name not in self.op.diskparams:
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        if dt_name not in self.new_diskparams:
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          self.new_diskparams[dt_name] = dt_params
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        else:
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          self.new_diskparams[dt_name].update(dt_params)

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