The following sections describe how to prepare
the system disk for the upgrade. Operations include the following:
Checking for appropriate
directory structure and preserving your security protections
Checking the SYSCOMMON
Purging duplicate files from
the system disk
Examining the system disk
Checking the size of the
and AGEN$INCLUDE files to the system disk
Verifying system parameters
4.7.1 Checking the Directory Structure and Preserving Your Security
If you changed the directory structure on your
system disk, the upgrade procedure does not work correctly. Restore
your system disk to a standard directory structure before you attempt
The OpenVMS upgrade procedure provides new files
and directories in the directory [VMS$COMMON...]. If you have any
special protections and access control lists (ACLs), you need to reapply
them to reestablish the security environment you currently have.
For more information about creating and maintaining a secure environment,
see the HP OpenVMS Guide to System Security manual.
4.7.2 Checking the SYSCOMMON Directories
For the upgrade to be successful, the SYSCOMMON
directories in all system roots must be aliases (or hard links) for
the VMS$COMMON directory. To check whether this is the case, enter
the following commands if you are booted from the system disk that
you are upgrading, and compare the displayed file identifiers to ensure
that they are all the same:
If you did not boot from the system disk that
you are upgrading, mount the disk to be upgraded and specify the actual
device name in the command. For example, if the system disk to be
upgraded is mounted on DKA100, you would use commands similar to the
Output from the first command should list a single
file. Output from the second command should list one file for each
system root on the disk. Check whether the file ID is the same for
all of the listed files and take action as follows:
If all the file IDs are
the same, continue with the procedure described in the next section.
If all the file IDs are
not the same, this system disk does not have the directory structure
that OpenVMS requires, and the upgrade will not succeed. For assistance
on resolving this, contact your software support representative.
4.7.3 Purging Duplicate Files from the System Disk
To free up disk space and file headers,
purge the system disk of duplicate files. HP recommends that you enter
the following commands, as shown:
If any .DMP files are found, use your discretion and delete
them. All the files being purged by the preceding commands will survive
an upgrade but might no longer be needed and might take up a significant
amount of disk space.
4.7.4 Examining the System Disk
Examine and repair (if necessary) the system disk
using the ANALYZE/DISK_STRUCTURE command. (See the HP
OpenVMS System Management Utilities Reference Manual: A-L for more information about this command.) Use the following procedure:
the system disk for inconsistencies and errors in the file structure
by entering the following command:
$ ANALYZE/DISK_STRUCTURE SYS$SYSDEVICE
Ignore the following message:
%ANALDISK-I-OPENQUOTA, error opening QUOTA.SYS
you find any other errors on the system disk, repair the errors by
entering the following command:
$ ANALYZE/DISK_STRUCTURE/REPAIR SYS$SYSDEVICE
Repeat steps 1 and 2 until no errors (other than
the one shown in step 1) are returned.
4.7.5 Checking the Size of the System Disk
It is difficult to determine in advance how many
blocks of disk space you need for the upgrade. It depends on how
many files you have on the target disk already and on how many components
you select during the upgrade procedure. However, the following information
The maximum amount of disk space you need is approximately 675,000 blocks, but
your system might use substantially less.
After you select the components
you want installed on the system for the upgrade, the upgrade procedure
calculates whether you have enough disk space, displaying the number
of available blocks and the number required for the upgrade. If the
procedure determines that your disk does not have enough space to
perform the upgrade, it displays a message to alert you and allows
you to terminate the upgrade so you can create more disk space and
try the upgrade again.
NOTE: If the files on your system disk are badly fragmented, you might
not be able to complete an upgrade, even when the amount of disk space
appears to be sufficient. HP recommends that you back up and restore
the system disk prior to upgrading. Restoring the system disk from
an image backup defragments the disk. For information about backing
up and restoring your system disk, see Appendix F.
To see how much space you have on the system disk,
enter the following command:
$ SHOW DEVICE SYS$SYSDEVICE
4.7.6 Returning Authorization and AGEN$INCLUDE Files to the System
If you place authorization and AGEN$INCLUDE files
on disks other than the system disk, the upgrade procedure will not
find these files. This is because the other disks are not mounted
during the upgrade. In addition, the logical names you set up to
point to these files are not defined during the upgrade. The following
sections explain how to make these files available to the upgrade
220.127.116.11 Authorization Files
OpenVMS allows you to relocate certain system
files (mostly authorization files) off the system disk. You do this
by copying the files to another location and then defining logical
names as documented in the file SYS$MANAGER:SYLOGICALS.TEMPLATE.
The logical names are defined in SYS$STARTUP:SYLOGICALS.COM.
When you boot your system from the OpenVMS operating
system media, the logical names pointing to these files are not defined,
and the disks where they are located are not mounted. Because of
this, the upgrade cannot access the relocated files, possibly resulting
in an incorrect or incomplete upgrade. The upgrade might finish without
error, but the files might not be in place as expected.
Before upgrading your system, check the definitions
of these logical names on your system. (If a file has not been relocated,
the corresponding logical name might not be defined. This is acceptable.)
If any logical name points to a location or file name other than the
location and file name listed in Table 4-2, return the file to the default location and
file name. To prevent the system from referencing the files located
off the system disk, either delete the associated logical name (using
the DCL command DEASSIGN/SYSTEM/EXEC), or shut down the operating
system and reboot from the operating system media. After the upgrade
and before booting the operating system, you can move these files
back to their original locations off the system disk, using the DCL
option (8) from the OpenVMS operating system menu.
NOTE: Some files listed in Table 4-2, such as SYS$SYSTEM:VMS$PASSWORD_HISTORY.DATA
and SYS$LIBRARY:VMS$PASSWORD_POLICY.EXE, might not exist on your system,
depending on certain configuration settings. For information about
these files, see the HP OpenVMS Guide to System Security manual.
Table 4-2 Logical Names for Relocated Authorization Files
Location and File Name
18.104.22.168 AGEN$INCLUDE Files
If you use the AGEN$INCLUDE feature in SYS$SYSTEM:MODPARAMS.DAT
to include files containing additional parameter settings, and the
files that are being included are not on the system disk, then do
the following before upgrading:
Move the files to the system disk.
Update the AGEN$INCLUDE entries to reflect the new
locations of these files. For these entries, do not use logical names
that you defined in SYS$STARTUP:SYLOGICALS.COM or elsewhere for your
normal startup procedure. When you boot the system from the OpenVMS
operating system media for an upgrade, your normal startup procedure
is not run, and so these logical names are not defined for the upgrade.
In addition, when you first boot the upgraded system, a special startup
procedure is used.
After the upgrade is complete, you can move these
included files back to their original locations. If you do so, remember
to re-set the AGEN$INCLUDE entries in SYS$SYSTEM:MODPARAMS.DAT.
4.7.7 Verifying System Parameters
Verify (and modify if necessary) system parameters.
(For information about verifying and modifying system parameters,
see the HP OpenVMS System Manager's Manual, Volume 2: Tuning,
Monitoring, and Complex Systems .) During an upgrade,
AUTOGEN initially generates parameter values based on parameter defaults.
However, during the GETDATA phase, AUTOGEN modifies parameter values
based on entries stored in SYS$SYSTEM:MODPARAMS.DAT. In addition,
AUTOGEN analyzes feedback information stored in the AGEN$FEEDBACK.DAT
file and, if the data is valid, adjusts any related parameter values
accordingly. (AUTOGEN considers data as valid if the system has been
up at least for 24 hours and the feedback is no more than 30 days
old.) To ensure that your feedback data is up to date, follow the
instructions in Section 4.8.
IMPORTANT: Any system parameters that you modified and did not enter in the SYS$SYSTEM:MODPARAMS.DAT file are
lost during the upgrade. To retain these parameters, enter their names
and the values that you have in use for them in SYS$SYSTEM:MODPARAMS.DAT.
When AUTOGEN runs after the upgrade, it uses the values in SYS$SYSTEM:MODPARAMS.DAT.
For example, if the current value of GBLPAGES
is 30000, and you modified GBLPAGES by 128 pages above the default,
add the following line to SYS$SYSTEM:MODPARAMS.DAT:
MIN_GBLPAGES=30128 !Increased by 128 by PLM for product z 12/12/04
AUTOGEN compares the computed value of GBLPAGES
with this MIN_ value (30128). If the computed value is less than the
specified MIN_ value, AUTOGEN increases the value of GBLPAGES to the
MIN_ value. Each time AUTOGEN runs, it makes the same comparison
and adjusts the value of GBLPAGES, but never below the minimum indicated
IMPORTANT: If you modify system parameters, note the following:
In general, you should
allow AUTOGEN to calculate system parameters. You can hardcode values
(such as GBLPAGES=value), but doing so overrides
AUTOGEN and might not allow it to set an optimal value based on observed
Whenever possible, use
MIN_parameter values (such as MIN_GBLPAGES) to
set the minimum value that can be set for a parameter by AUTOGEN.
AUTOGEN increases the value if necessary. It also adjusts related
parameters, unless they are hardcoded, in which case information is
provided in the AGEN$PARAMS.REPORT file. Use MAX_parameter values to set a maximum value when you need to limit a parameter
to a known maximum value.
Enter numeric values as
integers, without commas (for example, 10000). Enter alphabetic characters
in lowercase or uppercase.
HP recommends that you
include comments in the MODPARAMS.DAT file indicating who changed
the value, when it was done, and why it was done. An exclamation
point serves as a comment starter and can appear anywhere on a line.
The following is an example illustrating the modifications recommended
in the preceding bulleted items:
! the following changes made by K.Newcomb on 9/20/03
SWAPFILE=0 ! don’t re-size the SWAPFILE on AUTOGEN runs
MIN_gblsections=750 ! required for DECwindows MOTIF
MIN_NPAGEDYN=2750000 ! set npagedyn to a min of 2.75 million
For more information about using AUTOGEN as recommended,
see Section 7.24.
If your system was upgraded previously, a new
SYS$SYSTEM:MODPARAMS.DAT file was created then. This file has comments
and possibly duplicated entries that were created during that upgrade.
If you upgrade again, SYS$SYSTEM:MODPARAMS.DAT can become unnecessarily
large and potentially confusing. HP recommends that you edit and
reorganize SYS$SYSTEM:MODPARAMS.DAT before you upgrade again.
NOTE: On a cluster system disk, the MODPARAMS.DAT file
should exist in SYS$SYSROOT:[SYSEXE] for each root. You must edit
MODPARAMS.DAT as necessary for each root.