Red Hat ENTERPRISE LINUX 3 - FOR IBM S-390 AND IBM ESERVER ZSERIES, Installation Manual

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Appendix B. Sample Parameter Files
The IBM S/390(R) and IBM eServer zSeries(R) architectures use a special parameter file to set
up networking before the installation program (anaconda) can be started. This section
describes the contents of the parameter file.
The parameter file has a limit of 32 total parameters. To accommodate limitations of the
parameter files, a new configuration file on a CMS DASD should be used to configure the initial
network setup and the DASD specification. The
.parm
file should contain the real kernel
parameters, such as
root=/dev/ram0 ro ip=off ramdisk_size=40000
, and single
parameters which are not assigned to variables, such as
vnc
. Two new parameters which point
the installation program at the new configuration file need to be added to the
.parm
file. They
are
CMSDASD
and
CMSCONF
.
CMSDASD=<cmsdasd_address>
Where
<cmsdasd_address>
represents the list of the device ID of the CMS DASD device
which contains the configuration file. This is usually the CMS user's 'A' disk. This option is
applicable only for users who have a CMS formatted disk (z/VM) available.
For example:
CMSDASD=191
CMSCONFFILE=<configuration_file>
Where
<configuration_file>
represents the name of the configuration file. This value
must be specified in lower case. It is specified in a Linux style file name format. The CMS
file
REDHAT CONF
is specified as
redhat.conf
. This option is applicable only for users who
have a CMS formatted disk (z/VM) available.
For example:
CMSCONFFILE=redhat.conf
DASD=<dasd-list>
Where
<dasd-list>
represents the list of DASD devices to be used by Red Hat Enterprise
Linux.
Although automatic probing for DASDs is done if this parameter is omitted, it is highly
recommended to include the
DASD=
parameter, as the device numbers (and therefore the
device names) can vary when a new DASD is added to the Red Hat Enterprise Linux guest.
This can result in an unusable system.
For example:
DASD=0.0.0100,0.0201-0.0.0204
The following parameters are required to set up networking:
SUBCHANNELS=
Provides required device bus IDs for the various network interfaces.
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