ACC Utilities Reference Guide

194 Chapter8

ZMON - ZCOM Control Program

Overview

ZMON is the program responsible for initializing and managing the

ZCOM subsystem. Its operation is closely integrated with the ZCOM

LDM (Logical Device Manager). Its primary tasks are:

• Loading the TTGEN output file into the ZCOM kernel memory.

• Sequencing the startup of the ZCOM system with the assistance of

the LDM.

• Downloading and initializing the Mux ca rds.

• Restarting t he Mux cards after a powerfail or Mux firmware panic.

If the /var/opt/acc/dmp/ directory exists, zmon also creates a dump file

(compressed if gzip is accessible) of the A CC card memory image and

the relevant ZCOM Interface Table (IFT) for trouble-shooting.

While it is running, ZMON logs messages to the ZCOM message log t o

indicate the events, its operations and errors it encountered. Refer to the

ACC Error Guide for its messages.