Here is info about distributed lock manager by IBM:

  http://oss.software.ibm.com/developerworks/opensource/linux/projects/dlm/

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
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Sat, 10 Feb 2001 16:11:53 -0500 (EST)
Bruce Momjian <pgman@candle.pha.pa.us>
Distributed lock manager