Using the SYSGEN I/O Configurator
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:SYSGEN
sysgen>IO
** I/O configurator commands **
aclass (ac) adev (ad) apath (ap) avol (av)
dclass (dc) ddev (dd) dpath (dp) dvol (dv)
lclass (lc) ldev (ld) lpath (lp) lvol (lv)
maddress(ma) mclass (mc) mdev (md) mpath (mp)
mvol (mv)
clear (cl)(c) exit (ex)(e) help (he)(h) hold (ho)
oclose (oc) redo
io>
Getting Help with I/O Configurator Commands
The help facility enables you to identify quickly the function and syntax of those I/O configurator commands and options required to perform the multiple operations that define or change device-dependent information. To see a list of the commands available for use in the I/O configurator and their abbreviations, enter HELP at the I/O configurator prompt. To display the syntax for each available command at the current level, enter HELP ALL, as shown in Example 5-2. Example 5-2 I/O Configurator HELP ALL Command Output
io>HELP ALL
command (abb) parameter=value
------------- ---------------
aclass (ac) class = name
ldev = #/#,#,...
[mode = IN|OUT|CIO|NCIO|RANDOM|
DEFAULT]
adev (ad) ldev = #/#,#,...
[path = devicepath]
id = productid
[rsize = recordsize]
[outdev = outputdevice]
[mode = JOB|DATA|INTERACTIVE|DUPLICATIVE|
INPUT|OUTPUT|AUTOREPLY|NLIO|NONE]
[class = classname,...|NONE]
[cmode = IN|OUT|CIO|NCIO|RANDOM|
DEFAULT]
[pmgr = physicalmanagername]
[lmgr = logicalmanagername]
[pmgrpri = physicalmanagerpriority]
[mpetype = compmodetype]
[mpesubtype= compmodesubtype]
[devname = devicename]
.
.
mpath (mp) path = devicepath
[id = productid]
[pmgr = managername]
[lmgr = managername]
[pmgrpri = managerpriority]
[maxios = maxconcurrentchannelI/Os]
mvol (mv) vname = volumename
[newname = newvolumename]
[ldev = logicaldevice#]
[transient = %ofdiscfortransientobjects]
[permanent = %ofdiscforpermanentobjects]
[vclass = volumeclass]
To view the syntax for a specific I/O configurator command, enter HELP
commandname at the I/O configurator prompt. Refer to
Example 5-3, to get information about the ADEV command, you would enter
HELP ADEV.
Example 5-3 I/O Configurator Command HELP Output
io>HELP ADEV
adev (ad) ldev = #/#,#,...
path = devicepath
id = productid
[rsize = recordsize]
[outdev = outputdevice]
[mode = JOB|DATA|INTERACTIVE| DUPLICATIVE|
INPUT|OUTPUT|AUTOREPLY|NLIO|NONE]
[class = classname,...|NONE]
[cmode = IN|OUT|CIO|NCIO|RANDOM|
DEFAULT]
[pmgr = physicalmanagername]
[lmgr = logicalmanagername]
[pmgrpri = physicalmanager priority]
[mpetype = compmodetype]
[mpesubtype= compmodesubtype]
[devname = devicename]
io>
Using I/O Configurator Commands
The I/O configurator commands let you list, modify, add, and delete four types of objects: classes, devices, paths, and volumes. You can also use the I/O configurator to modify addresses with the MADDRESS command. In addition to the specific functions, shown in Table 5-1 I/O Configurator Command Matrix, the I/O configurator includes the commands that are common to all SYSGEN configurators: CLEAR, EXIT, HELP, HOLD, and OCLOSE. Table 5-1 I/O Configurator Command Matrix
List |
Modify |
Add |
Delete |
|
|---|---|---|---|---|
| Class | LCLASS | MCLASS | ACLASS | DCLASS |
| Device | LDEV | MDEV | ADEV | DDEV |
| Path | LPATH | MPATH | APATH | DPATH |
| Volume | LVOL | MVOL | AVOL | DVOL |
| Address | MADDRESS |
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 I/O Configurator List Commands. 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 |
| 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 |
Printing the Configuration Information
You can use the OFFLINE option to send the output of the listing commands, LCLASS, LDEV, LPATH or LVOL, to the file SYSGLIST. Using OFFLINE does not immediately generate printed output. The information is sent to SYSGLIST until you either enter the OCLOSE command or exit SYSGEN. Exiting SYSGEN or using OCLOSE closes SYSGLIST and prints the file. For example, to print information about all devices with device class DISC and LP on your system, do the following:At the I/O Configurator prompt (>io) enter:
io>LCLASS (DISC,LP) DEST=OFFLINE
Or, you can enter the command this way:io>LCLASS (DISC,LP) OFFLINE
To close the file SYSGLIST and print the information, enter
io>OCLOSE
Sample Configuration Data
Example 5-4 shows the kind of information you might see if you entered the LDEV command, without additional parameters, at the I/O configurator prompt on an N-Class system. Example 5-4 Listing Configured Devices: N-Class System
io> ld
LDEV: 1 DEVNAME: OUTDEV: 0 MODE:
ID: ST39103LC RSIZE: 128 DEVTYPE: DISC
PATH: 0/0/2/0.6.0 MPETYPE: 4 MPESUBTYPE: 2
CLASS: DISC SPOOL
LDEV: 2 DEVNAME: OUTDEV: 0 MODE:
ID: ST39103LC RSIZE: 128 DEVTYPE: DISC
PATH: 0/0/2/1.6.0 MPETYPE: 4 MPESUBTYPE: 2
CLASS: DISC SPOOL
LDEV: 6 DEVNAME: OUTDEV: 0 MODE:
ID: LP_PP_ID RSIZE: 66 DEVTYPE: PP
PATH: 0/0/1/0.16.0 MPETYPE: 32 MPESUBTYPE: 6
CLASS: LP PP
LDEV: 7 DEVNAME: OUTDEV: 0 MODE:
ID: HPC1553A RSIZE: 128 DEVTYPE: TAPE
PATH: 0/0/1/0.6.0 MPETYPE: 24 MPESUBTYPE: 7
CLASS: TAPE TAPE2 DDUMP TAPE1
LDEV: 10 DEVNAME: OUTDEV: LP MODE: JA
ID: JOBTAPE_ID RSIZE: 128 DEVTYPE: TAPE
PATH: 0/0/1/0.17.0 MPETYPE: 24 MPESUBTYPE: 2
CLASS: JOB JOBTAPE
LDEV: 20 DEVNAME: OUTDEV: 20 MODE: JAID
ID: C1099A RSIZE: 40 DEVTYPE: TERM
PATH: 0/0/4/0.0 MPETYPE: 16 MPESUBTYPE: 0
CLASS: CONSOLE TERM
io>
Adding Objects in SYSGEN
When you use SYSGEN to add objects to the system configuration, there are four I/O Configurator commands available: ACLASS, ADEV, APATH and AVOL. They are defined in Table 5-3 I/O Configurator Add Commands. For more detailed information read Performing System Manager Tasks. Table 5-3 I/O Configurator Add Commands
Command |
Definition |
Examples |
|---|---|---|
| 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 |
Changing Configurations in SYSGEN
When you use SYSGEN to change the system configuration, there are five I/O Configurator commands available: MADDRESS, MCLASS, MDEV, MPATH, and MVOL. They are defined in Table 5-4 I/O Configurator Modify Commands and explained in the following sections. Table 5-4 I/O Configurator Modify Commands
Command |
Definition |
Examples |
|---|---|---|
| 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 |
Deleting Objects in SYSGEN
When you use SYSGEN to delete objects from the system configuration, there are four I/O Configurator commands available to you: DCLASS, DDEV, DPATH, and DVOL. They are defined in Table 5-5 I/O Configurator Delete Commands and explained in the following sections. Table 5-5 I/O Configurator Delete Commands
Command |
Definition |
Examples |
|---|---|---|
| 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 |
Changing the Configuration Online
A new command file, DOIONOW, has been added to MPE/iX which allows the system manager to immediately implement device configuration changes made with SYSGEN. This command allows you to keep the system online and available to users more of the time, and gives you the flexibility to change the configuration on an "as needed" basis. To change the configuration while the system is online, do the following:
Make the necessary changes to the configuration with the I/O Configurator. (This process is no different than it was before; for more information, read the previous section of this chapter "Using SYSGEN's I/O Configurator."
Keep the configuration changes and exit SYSGEN. The information is saved in the file LOG4ONLN.PUB.SYS, which is used by the DOIONOW command.
At the CI prompt, execute the DOIONOW command by entering:
:DOIONOW
DOIONOW passes the LOG4ONLN file, which contains the new configuration information, to IOCONFIG, which begins making the changes. If LOG4ONLN is not found, you will see the following error message displayed on the console:
NO PENDING SYSGEN CONFIG CHANGES
|
I/O Paths |
Using the IOCONFIG Utility |