TS/MP 2.5 System Management Manual

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 must 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 15 (page 42):
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 must 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 have added SPREBALANCEMODE and/or DUMASK using SET PATHWAY command in
the Pathway environment.
Figure 15 Starting a New PATHMON Environment
Restarting a PATHMON Environment (COOL Start Option)
To restart a PATHMON environment, use the COOL start option as follows:
= START PATHWAY COOL
42 Starting and Stopping a PATHMON Environment