TS/MP System Management Manual (G06.24+, H06.03+)

Starting and Stopping a PATHMON Environment

NonStop TS/MP System Management Manual—541819-001

2-12

Specifying the START Command

After you have started the PATHMON process and PATHCOM and configured global

parameters, you can start your PATHMON environment.

There are two START command options: COLD and COOL. Which one you choose

depends on the task you want to perform:

•

Starting a new PATHMON environment (cold start)

When you start a PATHMON environment for the first time, you must specify the

COLD start option. The COLD start option tells the PATHMON process to create

the configuration file, PATHCTL, that will store configuration information.

•

Restarting a PATHMON environment (cool start)

When you restart a PATHMON environment, you should specify the COOL start

option. The COOL start option tells the PATHMON process to get the

configuration information from the existing PATHCTL file. A cool start is usually

much faster than a cold start.

Starting a New PATHMON Environment (COLD Start Option)

To start your PATHMON environment for the first time, enter the START PATHWAY

command, specifying the COLD start option as follows:

= START PATHWAY COLD

In response to this command, the PATHMON process performs two steps, as

described below and shown in Figure 2-6:

1. Starts the PATHMON backup process if one is specified.

2. Creates the PATHMON configuration file, PATHCTL.

PATHMON preallocates disk space for the configuration file based on the

maximum values that you specified in the SET PATHWAY commands prior to cold

start.

Depending on the size of your PATHMON environment, the time required to complete

a cold start can be lengthy. Consequently, you should use the COLD start option only

if any of this are true:

•

You are starting your PATHMON environment for the first time.

•

You have changed the NODEINDEPENDENT, OWNER, or SECURITY attributes.

•

You need to modify system limits using the SET PATHWAY command.