IBM RS/6000 - Manual (Page 108)

Back Up the System
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
WARNING: Execution of the mksysb command will
result in the loss of all material
previously stored on the selected
output medium. This command backs
up only rootvg volume group.
ᑍ Backup DEVICE or FILE [] +/
Create MAP files? no +
EXCLUDE files? no +
Make BOOTABLE backup? yes +
(Applies only to tape)
EXPAND /tmp if needed? no +
(Applies only to bootable tape)
Number of BLOCKS to write in a single output [] #
(Leave blank to use a system default)
F1=Help F2=Refresh F3=Cancel F4=List
F5=Reset F6=Command F7=Edit F8=Image
F9=Shell F1 =Exit Enter=Do
Figure 28. Creating a mksysb
From this screen, you can chose different options to create your system backup.
The only option which you must specify is the backup device (or file). The different
options are:
Backup DEVICE or FILE
Enter the desired backup device, for example /dev/rmt . You can also put in
the name of a file if you want to create a system image which you can keep on
disk or use for network installations.
Create MAP files?
Setting this option to yes will allow the image to be restored to disk with the
logical volumes being created in exactly the same places on the disks as they
had when the mksysb was taken. This option will generate a layout mapping of
the logical-to-physical partitions for each logical volume in the root volume
group. This mapping will be used when the mksysb is restored to allocate the
same logical-to-physical partition mapping as the system from which the
mksysb was created.
EXCLUDE files?
If you set this option to yes, the mksysb will be created, but files which are
listed in the /etc/exclude.rootvg file will not be backed up. This file is created
by the user and is useful if you have a directory containing large amounts of
temporary files in the root volume group which you do not wish to back up.
Within the /etc/exclude.rootvg, you can put in explicit file names or directories,
such as /home/george/tmp/out.1 and /home/george/tmp. When specifying
directories, the
mksysb command will back up the directory, but not the files in
it. For example, if the /etc/exclude.rootvg file contains the line
84 Introduction to PCI-Based RS/6000 Servers