10.13. Debug Logging for Distributed Lock Manager (DLM) Needs to be Enabled
10.13. Debug Logging for Distributed Lock Manager (DLM) Needs to be Enabled There are two debug options for the Distributed Lock Manager (DLM) that you can enable, if necessary: DLM kernel debugging, and POSIX lock debugging. To enable DLM debugging, edit the /etc/cluster/cluster.conf file to add configuration options to the dlm tag. The log_debug option enables DLM kernel debugging messages, and the plock_debug option enables POSIX lock debugging messages. The following example section of a /etc/cluster/cluster.conf file shows the dlm tag that enables both DLM debug options: After editing the /etc/cluster/cluster.conf file, run the cman_tool version -r command to propagate the configuration to the rest of the cluster nodes.
<cluster config_version="42" name="cluster1"> <dlm log_debug="1" plock_debug="1"/> </cluster>