Using the SYSGEN I/O Configurator

Class

LCLASS

MCLASS

ACLASS

DCLASS

Device

LDEV

DDEV

Path

LPATH

APATH

DPATH

Volume

LVOL

MVOL

AVOL

DVOL

MADDRESS

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)

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

LVOL

Lists the attributes of the specified volume, which is one disk pack. Each volume is a member of a volume set and contains a volume label, a label table, and a free space map. When you enter the LVOL command for a specific volume, you will see the volume's LDEV number, the amount of transient and permanent space it has, its class status, and the volume class it belongs to.

LVOL MEMBER1

ACLASS

Creates a new class name and associates devices to the new class. You use the ACLASS command to add a class name designation to a device that is already configured with the ADEV command. You also specify the mode with this command, which can be one of JOB (accepts jobs and sessions), IN (input only), OUT (output only), CIO (concurrent I/O), NCIO (nonconcurrent I/O), RANDOM (direct-access device such as a disk), and DEFAULT (a mode assigned when the system is initialized).

ACLASS EPOC 19
ACLASS PLATES 31/34 MODE=RANDOM

ADEV

Adds a device to an existing I/O path that is configured to the device adapter level. At a minimum, you must specify the LDEV, the path, and ID number, but you may also specify the record size, an output device associated with the device, the device operation mode, the class, a class mode (other than the default assigned to the device), physical and logical device managers, the priority level of the physical device manager, the compatability mode type and subtype, and a device name.

ADEV LDEV=30 PATH=4.5.9 ID=HP2688A
ADEV 8 PATH=2/4.2.1 ID=HP7978B RSIZE=132

APATH

Defines the I/O path to an adapter, not to a device. (To add device level paths, you use the ADEV command.) If the path has already been defined, you will get an error. At a minimum, you must enter the path and an ID, which is either the Hewlett-Packard product number or a mnemonic name that designates different uses of the same product. You may also specify the physical and logical device managers, the execution priority of the physical device manager, and the maximum number of concurrent I/Os to expect.

APATH PATH=4.2 ID=HP27113A

AVOL

Adds a new volume to the system volume set configuration. You must specify a unique name you give to each volume member and its logical device number. In addition, you may also specify the volume class and the amounts of transient and permanent disk space allocated on the volume.

AVOL VNAME=MEMBER2 LDEV=4 VCLASS=PROD

MADDRESS

Modifies the I/O path from one that exists to a new path that does not already exist. You specify the old path and the new path, both of which must have the same number of levels.

MADDRESS 2/4.0.2 6/4.0.3

MCLASS

Changes I/O class information including the class mode, the class name, and the devices associated with the class.

MCLASS CLASS LP NEWCLASS=BIGPRN MODE=OUT
MCLASS BONSAI SMALLPRN 28/29

MDEV

Changes the attributes of a configured device. You specify the LDEV number of the device you want to modify, then enter the new parameters. This commands changes the LDEV number itself, the device ID, the device path, class, mode, record size, physical and logical device manager, the compatibility mode type and subtype, and the device name.

MDEV 8 18 HP7978H 4.3.0 MODE=JOB

MPAT

Changes the attributes of an I/O path. You can modify the path name, the product ID, the physical and logical device managers, the execution priority of the physical device manager, and the maximum number of concurrent I/Os to expect.

MPATH 4.1 HP27113A
MPATH 2/4.3 PMGR=HPIB_DAM

MVOL

Modifies the attributes of a volume set member. You can modify the volume name, volume class and the amounts of transient and permanent disk space allocated on the volume.

VOL VNAME=MEMBER2 TRANSIENT=30
PERMANENT=70

DCLASS

Removes one or more class names from the system. If the class does not exist, or if you attempt to delete the DISC, CONSOLE, or TAPE classes, SYSGEN displays an error message

DCLASS EPOC
DCLASS (EPOC,FASTLP)

DDEV

Removes a specific device, range of devices, all products of a given product identification, all devices of a given type, or all devices of a given class name. You cannot delete the system disk (LDEV 1) or the system console (LDEV 20).

DDEV LDEV=123
DDEV ID=HP2932A

DPATH

Deletes an I/O path and, optionally, all the I/O paths below it in the configuration. If there are I/O paths below the one you are deleting, SYSGEN prompts you to confirm the action before deleting them. If an I/O path is currently used by a configured device, SYSGEN issues an error and does not delete the path.

DPATH 4.2
PATH 2/8.2

DVOL

Deletes a volume member from the system configuration. To implement the change, you must create a system load tape with the new configuration and then use it to do an INSTALL.

DVOL MEMBER2