Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Руководство по установке

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Chapter 19.
221
Sample Parameter Files
The IBM System z 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 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.
qeth: SUBCHANNELS="read_device_bus_id,write_device_bus_id,
data_device_bus_id"
lcs: SUBCHANNELS="read_device_bus_id,write_device_bus_id"
Due to the length of the qeth command line, it has been broken into two lines.
Note
The CTC, and NETIUCV drivers have been deprecated and are no longer supported
in Red Hat Enterprise Linux.