How do I tune the size of the DLM hash table to increase the performance of my GFS/GFS2 filesystem in a RHEL 5 or 6 cluster?

Solution Verified - Updated -

Issue

  • How do I tune the size of the DLM hash table to increase the performance of my GFS/GFS2 filesystem?
  • I want to increase the size of the DLM hash table on my cluster but I cannot go over 2048.
  • How can I increase the GFS2 locktable buffers?

Environment

  • Red Hat Enterprise Linux (RHEL) 5 or 6 with the High Availability or Resilient Storage Add On
    • RHEL 5: cman-2.0.115-118.el5_10.1 or higher
    • RHEL 6: All cman releases

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