System Startup, Configuration, and Shutdown Reference Manual (32650-90892)

Chapter 5 121
Modifying Input/Output (I/O) Configurations
Using the SYSGEN I/O Configurator
Viewing the Current Configuration
To get information about the current configuration, either displayed on screen or printed,
using the LCLASS, LDEV, LPATH, and LVOL commands as described in Table 5-2..
Device LDEV MDEV ADEV DDEV
Path LPATH MPATH APATH DPATH
Volume LVOL MVOL AVOL DVOL
Address MADDRESS
Table 5-2. I/O Configurator List Commands
Command Definition Examples
LCLASS Lists the class name or names you specify with the
command, the class modes, and the devices
associated with the classes in the I/O configuration.
A class name is an identifier to which numerous
devices can be assigned. Unlike LDEV numbers,
device class names are not unique to each device.
For example, all of your system's printers could be
assigned the class name LP. (LP, which stands for
“line printer,” is a common device class name.) For
more information, refer to the Controlling System
Activity. It provides detailed information about
device class names, their modes of operation, and
how they are assigned in the system.
LCLASS DISC
LCLASS (DISC,LP
LDEV Lists the attributes of the specified logical device or
devices.If you omit the LDEV number, all of the I/O
devices and their characteristics are listed. Each
configured logical device (LDEV) has a uniquely
assigned LDEV number which identifies a physical
device associated with a system.
LDEV CLASS=(LP,EPOC)
LDEV (4/9,11/14)
LPATH Lists information about the adapters and I/O
devices on a specified path level. You can list a
specific path, list paths a specific level, or list all
paths associated with an I/O manager.
LPATH PAT=4
LPATH, 1
LPATH MANAGER=CIPER_DM
Table 5-1. I/O Configurator Command Matrix
List Modify Add Delete