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

Chapter 5 133
Modifying Input/Output (I/O) Configurations
Using the IOCONFIG Utility
prompt.
The command syntax is as follows:
DELETECLASS {[CLASS =]
classname,... ]
Configuring a Device Adapter with IOCONFIG
It is often necessary to configure intermediate paths before a device can be configured into
the system. For example, you must configure a SCSI device adapter before the first device
on that SCSI bus can be configured. Intermediate path configuration is done just like in
SYSGEN. At this time, the command to delete a path is only supported for the
single-ended SCSI adapter. All other cases will fail with an error.
The command syntax is as follows:
ADDPATH {[PATH =]
devicepath }{[ID =] productid ]
[[PMGR =]
physicalmgrname ]
[[PMGRPRI =]
physicalmgrpri ]
[[LMGR =]
logicalmgrname ]
[[MAXIOS =]
maxconcurrentchannelIOs ]
Listing an I/O Path with IOCONFIG
An I/O path is the system address assigned to the device interface hardware and the
physical path used to reach an I/O device. The system manager or operator can use the
LISTPATH command to display information about adapters and I/O devices on a specified
path in the active configuration. The command lists the configured I/O paths according to
their paths or to their associated I/O manager. The syntax of the LISTPATH command
appears below:
LISTPATH [PATH= [
path ]
LEVEL= [
# ]
MANAGER= [
manager name,... ]
DEST= [OFFLINE] ]
The
LEVEL parameter lists I/O paths at the level you specify:
• Enter 1 to display channel adapter information
• Enter 2 to display device adapter information
• Enter 3 to display device information
The
MANAGER parameter lists the I/O paths associated with the given manager or
managers, if the manager(s) exist. If not, IOCONFIG displays a warning message.
Use the
DEST parameter to send LISTPATH output to the file IOCLIST. This file remains
open until you exit IOCONFIG, at which point the file is closed and printed.