Question: how to enable vxms logging netbackup?
Answer: Create the VxMS log directory: /usr/openv/netbackup/logs/vxms. Note: ... 
Add the following to the /usr/openv/netbackup/bp.conf file: VXMS_VERBOSE=<numeric value of 0 or greater> ... 
To change the log location, enter the following in the bp.conf file: vxmslogdir=path to new log location.