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Chapter 6. DIGITAL UNIX Installation
EK–KZPCM–UG. B01 6–3
6.2.2 Addition of New Hardware After KZPCM Installation
If a new kernel configuration file is created after the installation of
the ITPSA driver, ITPSA entries will need to be re-added in order for the ITPSA
driver to get compiled into the new kernel.
This will be the case if the ‘sizer –n’ command is used, or if the ‘doconfig’
command is used without any arguments (for example when adding new
hardware to the system).
To add ITPSA entries to a kernel configuration file, execute the script
#/usr/opt/ITPSA100/conf/itconfig.sh <SYSCFGFILE>
(where <SYSCFGFILE> is the name of the kernel configuration file to modify).
The script will retrieve the values entered during the initial installation of the
ITPSA driver for number of adapter and Ethernet entries to add.
To change the number of adapter or Ethernet entries to add, edit the file:
#/usr/opt/ITPSA100/data/itconfig.dat
The formatting of this file is strict. Be sure to only change the number of
adapters or Ethernet entries and nothing else. Also be sure that no spaces exist
between the NADAPTERS or NETHERNETS keywords and the values (i.e. it
should be "NADAPTERS=4", and not "NADAPTERS = 4", etc).
NOTE
In some cases it might be necessary to review
Subsection 6.2.3 to ensure that the SCSI bus is
re-numbered properly.
6.2.3 Bus Re-numbering
The process of booting
genvmunix
to scan for hardware will identify the KZPCM
SCSI buses as PSIOP buses. When the ITPSA driver is installed it will re-
number the KZPCM SCSI buses. If the system disk is attached to the KZPCM,
the re-numbering will cause the system to fail to boot because the system disk
will not match the entry in the
/etc/fstab
file. The following procedure will avoid
bus renumbering for the KZPCM adapters. The procedure assumes that the
ITPSA driver has been installed in the system and that entries have been created
in the system kernel configuration file for the ITPSA driver (this is done by the
ITPSA installation procedure).