The event source daemon (vxesd) is a Dynamic Multi-Pathing (DMP) component process that receives notifications of any device-related events that are used to take appropriate actions.

DMP notifies vxesd of major events, and vxesd logs the event in a log file (/etc/vx/dmpevents.log). These events include:

The log file is located in /var/adm/vx/dmpevents.log but is symbolically linked to /etc/vx/dmpevents.log. When the file reaches 10,000 lines, the log is rotated. That is, dmpevents.log is renamed dmpevents.log.X and a new dmpevents.log file is created.

You can change the level of detail that is displayed in the system or console log about the DMP events. Use the tunable dmp_log_level. Valid values are 1 through 9. The default level is 1.

# vxdmpadm settune dmp_log_level=X

The current value of dmp_log_level can be displayed with:

# vxdmpadm gettune dmp_log_level

For details on the various log levels, see the vxdmpadm(1M) manual page.