Oracle RAC node panicked in 3rd party OCFS2 DLM using RHEL 4

Solution Unverified - Updated -

Issue

  • Oracle RAC node kernel panicked after a dlm failure: 
Jan 22 03:14:59 node2 kernel: o2net: connection to node servername-adm (num 0) at 192.168.255.1:7777 has been idle for 60.0 seconds, shutting it down.
Jan 22 03:14:59 node2 kernel: (0,3):o2net_idle_timer:1426 here are some times that might help debug the situation: (tmr 1264148039.354044 now 1264148099.346411 dr 1264148039.354036 adv 1264148039.354046:1264148039.354048 func (866807b6:505) 1264147947.364615:1264147947.364629)
Jan 22 03:14:59 node2 kernel: o2net: no longer connected to node servername-adm (num 0) at 192.168.255.1:7777
Jan 22 03:15:10 node2 kernel: (1688,4):dlm_do_master_request:1413 ERROR: unhandled error!----------- [cut here ] --------- [please bite here ] ---------
Jan 22 04:02:18 node2 kernel: klogd 1.4.1, log source = /proc/kmsg started.

Environment

  • Red Hat Enterprise Linux (RHEL) 4.6
  • Oracle RAC (version unknown)
  • ocfs2-2.6.9-34.ELsmp-1.2.8-2.1.el4-x86_64

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