The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
By default, a fenced node in an OCFS2 cluster restarts instead
of panicking so that it can quickly rejoin the cluster. If the
reason for the restart is not apparent, you can change the
node's behavior so that it panics and generates a
vmcore for analysis.
To configure a node to panic when it next fences, run the following command on the node after the cluster starts:
# echo panic > /sys/kernel/config/cluster/cluster_name/fence_method
where cluster_name is the name of the
cluster. To set the value after each reboot of the system, add
this line to /etc/rc.local. To restore the
default behavior, set the value of
fence_method to reset
instead of panic and remove the line from
/etc/rc.local.
For more information, see Section 22.3.5, “Configuring the Behavior of Fenced Nodes”.