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Configuring Your System with SYSGEN
As system manager, you use the system generator (SYSGEN) to make changes
to the configuration of your computer system.
The configuration of a system is like a map; it tells the computer what
peripherals are attached to it and where they are attached. Any device
that is not configured, or configured incorrectly, cannot communicate
with the system.
To access SYSGEN
To start SYSGEN and use any of the first-level commands available to you,
do the following:
1. At the MPE prompt, enter:
SYSGEN
or enter:
RUN SYSGEN.PUB.SYS
2. At the SYSGEN prompt, enter one of the first-level commands shown
on the screen (and displayed in example 2-1, below).
For example, to use the Sysfile configurator, enter sysfile or the
abbreviated version sy at the SYSGEN prompt.
___________________________________________________________________________________
| |
| |
| :SYSGEN |
| |
| SYSGEN version D.00.00: catalog version D.00.00 FRI, JAN 11,1994 10:10 AM |
| Copyright 1987 Hewlett-Packard Co. All Rights Reserved |
| |
| ** First level command ** |
| |
| io log (lo) misc (mi) spu (sp) |
| sysfile (sy) |
| |
| basegroup (ba) keep (ke) permyes (pe) show (sh) |
| tape (ta) |
| |
| clear (cl)(c) exit (ex)(e) help (he)(h) oclose (oc) |
| redo |
| sysgen> |
| |
___________________________________________________________________________________
Example 2-1. Entering SYSGEN
To confirm potentially serious actions
SYSGEN is initially set to have you confirm potentially serious actions.
For example, if you make configuration changes and forget to save them
before you exit, SYSGEN prompts you to do so. This feature (PERMYES OFF)
can help prevent time-consuming mistakes.
You have the option of enabling PERMYES so that SYSGEN will automatically
answer YES to any prompt. You may want to do so, for example, when you
are initiating a job. All SYSGEN command files should begin with PERMYES
ON.
To enable PERMYES, enter the following at the SYSGEN prompt:
sysgen>PERMYES ON
When you are making and keeping configuration changes, it is a good idea
to disable PERMYES so that SYSGEN does not reply YES to all prompts. To
do so, enter the following:
sysgen>PERMYES OFF
Example 2-2 shows how SYSGEN overrides user input with PERMYES enabled:
___________________________________________________________________________________
| |
| |
| sysgen>PERMYES ON |
| sysgen>SYSFILE |
| |
| ** SYSFILE configurator commands ** |
| |
| aauto (aa) aboot (ab) acmsl (ac) asprog (as) |
| cmsl (cm) dauto (da) dboot (db) dcmsl (dc) |
| dsprog (ds) lcmsl (cl) rauto (ra) rboot (rb) |
| rcat (rc) rcmsl (rcm) rdcc (rd) ripl (ri) |
| rnmlib (rn) rsprog (rs) show (sh) |
| |
| clear (cl)(c) exit (ex)(e) help (he)(h) hold (ho) |
| sysfile> |
| sysfile>ASPROG FCOPY.PUB.SYS FCOPY.PUB.SYS ** Add FCOPY to SYSGEN tape ** |
| sysfile>E *** Exit without saving *** |
| |
| configuration changes are not kept yet! |
| still want to exit (yes/no) ?Automatic yes |
| sysgen> |
| |
| |
___________________________________________________________________________________
Example 2-2. PERMYES ON Action
To access other configurators
Configurators are other system generation modules which you use to
further define your system. To access a configurator, you enter one of
the following commands at the sysgen> prompt: IO, LOG, MISC, SPU, or
SYSFILE. The prompt changes and you see a menu screen which includes a
list of the commands that you can use in that configurator.
The following table lists the SYSGEN commands you use to access a
configurator and briefly explains each one.
Table 2-1. The Configurator Commands
--------------------------------------------------------------------------------------------
| | |
| SYSGEN Command | Definition |
| | |
--------------------------------------------------------------------------------------------
| | |
| IO | Starts the input/output configurator, which you use to define the |
| | local devices for a host or target system. |
| | |
--------------------------------------------------------------------------------------------
| | |
| LOG | Starts the LOG configurator, which you use to define which system |
| | and user events are recorded. |
| | |
--------------------------------------------------------------------------------------------
| | |
| MISC | Starts the MISC configurator, which you use to define |
| | miscellaneous system elements such as job- and session-related |
| | processes, system resource allocation, spool parameters, stack and |
| | heap sizes, and other information. |
| | |
--------------------------------------------------------------------------------------------
| | |
| SPU | Starts the SPU switchover configurator, which you use to define |
| | the system processing unit (SPU) pairs that will back each other |
| | up (i.e. take over processing) in the event of a failure. |
| | |
--------------------------------------------------------------------------------------------
| | |
| SYSFILE | Starts the SYSFILE configurator, which you use to define system |
| | libraries, programs and the system message catalog and determine |
| | which files go on the SLT. |
| | |
--------------------------------------------------------------------------------------------
For example, to access the IO configurator, at the sysgen> prompt enter:
sysgen>IO
When you do, you see this screen:
___________________________________________________________________________
| |
| |
| sysgen>IO |
| |
| ** IO 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> |
| |
| |
___________________________________________________________________________
Example 2-3. Activating the IO Configurator
To use online help
You can get help with any of SYSGEN's first-level commands and, when you
are using a configurator, with any of the configurator commands. The
amount of information you get depends on your current level (SYSGEN or
configurator) and what parameters you enter with the HELP command.
* Enter HELP or HELP ALL to display all the commands available to
you at the current level. For example, when you type HELP at the
IO configurator prompt, you see a list of IO configurator
commands.
* Enter HELP command to display the syntax of command
For example, to display detailed information and syntax of the SYSGEN
KEEP command, enter:
sysgen>HELP KEEP
Or, to display the syntax for the IO configurator command ADEV, start the
IO configurator and enter:
io>HELP ADEV
To show the state of the configurators
Use the SHOW command to display the current state of global SYSGEN
information. For example, use SHOW to find out the version you are using
or what the status of the PERMYES option is. You can also display a
combined listing of configurator information.
SHOW has the following parameters:
[ {BASEGROUP }]
[ {NEWGROUP }]
SHOW (SH) [[TYPE =] {VERSION }] [[DEST =] OFFLINE]
[ {PERMYES }]
[ {CONFIGURATOR}]
[ {ALL }]
To display one kind of information, use the TYPE parameter to specify
what you want. For example, to find out the base group, enter:
sysgen>SHOW TYPE=BASEGROUP
To display a combined listing of configuration information, enter:
sysgen>SHOW
or
sysgen>SHOW ALL
To print the output of the SHOW command, use the OFFLINE parameter to
send the output to SYSGEN's listing file SYSGLIST and then enter the
OCLOSE command or exit SYSGEN to close SYSGLIST and print the file. For
example, to print a list of all configuration information and exit
SYSGEN, enter:
sysgen>SHOW DEST=OFFLINE
sysgen>EXIT
To hold and save configuration changes
You must perform two separate steps to keep any changes you make from
within a configurator:
* Hold the changes before leaving the configurator.
* Keep the changes before leaving SYSGEN.
Keeping changes makes them permanent on disk, but you should also save
them by creating a system load tape (SLT). Changes to the configuration
only take effect when you restart the system with the START NORECOVERY
option. Other changes take effect only when you perform an update with
the system load tape (SLT).
To make changes in a configurator, hold and then keep the changes, follow
these steps:
1. At the console, log on as MANAGER.SYS by entering:
HELLO MANAGER[/userpass].SYS[/acctpass]
2. Start SYSGEN and access the configuration group that you plan to
store on the system load tape (SLT). The default is the name of
the group used in the most recent system boot, usually CONFIG.
3. Access the IO, LOG, MISC, SYSFILE, or SPU configurators and make
the changes you want.
4. Enter the HOLD command to save the changes to a temporary file.
5. Enter the EXIT command to leave the configurator and return to the
sysgen> prompt.
6. Keep the new configuration information by entering the KEEP
command. For example:
sysgen>keep nuconfig
Once you have kept the new configuration information, you can enter
another configurator to make additional changes or you can create a
system load tape. To learn how to create a tape, read the next section.
For more information about reconfiguring your system, refer to chapters 3
through 6 of this book.
To clear configuration changes
Until you use the KEEP command from within SYSGEN to save configuration
changes, you have the option of clearing them. You can clear changes in
one configurator or you can clear all the changes you have made since the
last KEEP command.
To clear all configuration changes made in all configurators, enter the
CLEAR command at the sysgen> prompt. For example:
sysgen>CLEAR
To clear all the changes you made within a particular configurator, enter
the CLEAR command at the configurator prompt. For example, to clear all
IO configurator changes, enter:
io>CLEAR
Once you enter the KEEP command, the changes become permanent and CLEAR
does not remove them.
To create system load tapes
You use the TAPE command (abbreviated TA) to generate a boot or system
load tape (SLT) from system configuration information. SYSGEN writes the
configuration to the CONFIG group of the SYS account on the tape. Tapes
created with the TAPE command do not contain the system directory.
TAPE has the following syntax:
[ {VERBOSE }]
[ {NOCHANGE}]
TAPE [[MODE =] {NOCONFIG}] [STORE = fileset] [[DEST =] OFFLINE]
[ {NODIAG }]
[ {NOLOGNUM}]
[ {LOGNUM }]
Table 2-2. TAPE Command Parameters
--------------------------------------------------------------------------------------------
| | |
| Parameter | Definition |
| | |
--------------------------------------------------------------------------------------------
| | |
| VERBOSE | Lists the number of nonuser files to be saved and the name of e |
| | ach file as it is saved to the boot tape. |
| | |
--------------------------------------------------------------------------------------------
| | |
| NOCHANGE | Prevents SYSGEN from changing the names in the SYSFILE configur |
| | ator as it makes the boot tape. |
| | |
--------------------------------------------------------------------------------------------
| | |
| NOCONFIG | Prevents SYSGEN from dumping the current configuration file as it |
| | makes the tape. |
| | |
--------------------------------------------------------------------------------------------
| | |
| NODIAG | Prevents SYSGEN from saving the diagnostic files to tape as it ma |
| | kes the tape. Using this parameter creates a tape that does not |
| | contain a comple te system. Installing from this tape may not |
| | produce a bootable system. |
| | |
--------------------------------------------------------------------------------------------
| | |
| NOLOGNUM | Resets the system and datacom log numbers to zero (0). |
| | |
--------------------------------------------------------------------------------------------
| | |
| LOGNUM | Is the default. It specifies that SYSGEN should carry forward the |
| | system and datacom log numbers and not reset to zero (0). |
| | |
--------------------------------------------------------------------------------------------
| | |
| OFFLINE | Directs the listing created by VERBOSE to SYSGEN's listing f ile, |
| | SYSGLIST. Either enter the OCLOSE command or exit SYSGEN to close |
| | ` `SYSGLIST'' and print the file. |
| | |
--------------------------------------------------------------------------------------------
| | |
| STORE | Instructs SYSGEN to use the STORE utility to append user files |
| | specified in fileset to the end of the system load tape. Allows |
| | users to create a combined SLT/STORE tape set. Any fileset valid |
| | for STORE is allowed in the STORE option. You may not specify |
| | other STORE parameters such as DIRECTORY and SHOW unless you |
| | include them in an indirect file and then specify the indirect |
| | file with the STORE parameter of the TAPE command. |
| | |
--------------------------------------------------------------------------------------------
To create a system load tape with the new information:
1. Make and hold all necessary changes to the configuration.
2. Enter the EXIT command to exit the configurator and return to the
SYSGEN prompt.
3. Enter the KEEP command, followed by groupname to store all changes
to a set of permanent disk files.
The parameter, groupname is the group in the SYS account that
contains the configuration data file set to be used. SYSGEN keeps
track of the current configuration group, whether it is the
default group with which you booted the system, a group specified
by the basegroup parameter on the initial SYSGEN command line, or
a group switched to, by the BASEGROUP global configurator command.
If you do not specify a base group, SYSGEN uses the current
working base group to save the configuration changes.
4. Mount a write-enabled tape on the tape drive. You'll see a
message on the console similar to the one below.
10:15/10/Vol (unlabeled) mounted on LDEV# 7
5. Enter the TAPE command to create the tape.
The system responds by issuing a console message similar to the
following:
?10:15/#92/46/LDEV# FOR "SYSGTAPE" ON TAPE (NUM)
6. Reply to the tape mount message. For example, to reply to the
sample system response in the previous step, where 46 is the PIN
and 7 is the LDEV number of your tape drive, enter:
reply 46,7
The system issues a message indicating that it has completed the
tape:
**Boot tape is successfully built**''
7. Remove the reel from the tape drive and write-protect it. Label
the tape and store it in a secure location with any other backup
materials.
To enter an MPE command from any configurator
Use the colon (:) to introduce an MPE command while in any configurator.
To issue an MPE command from the IO configurator, enter the colon (:)
followed by the command. For example, to display the correct time from
the IO configurator, enter:
io>:SHOWTIME
THU, JAN 10, 1990, 2:55PM
io>