Why does Infiniband on RHEL 6.6 loses connectivity after opensm failover ?

Solution Verified - Updated -

Issue

  • Infiniband stops working after some time on RHEL 6.6 and has to be rebooted ?
  • system hung during shutdown after updating to RHEL 6.6 while Unloading OpenIB kernel modules.

Environment

  • Red Hat Enterprise Linux(RHEL) 6.6.
  • Infiniband Hardware.
  • kernel-2.6.32-504.8.1.el6.

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