9.8. Parameters and configuration files on 64-bit IBM Z

Where cmsdasd_address is the device number of a CMS-formatted disk that contains the configuration file. This is usually the CMS user’s A disk.

For example: CMSDASD=191

Where configuration_file is the name of the configuration file. This value must be specified in lower case. It is specified in a Linux file name format: CMS_file_name.CMS_file_type.

The CMS file REDHAT CONF is specified as redhat.conf. The CMS file name and the file type can each be from one to eight characters that follow the CMS conventions.

For example: CMSCONFFILE=redhat.conf

Where type must be one of the following: qeth, lcs, or ctc. The default is qeth.

Choose qeth for:

Where device_bus_IDs is a comma-separated list of two or three device bus IDs. The IDs must be specified in lowercase.

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 or ctc: SUBCHANNELS="read_device_bus_id,write_device_bus_id"

For example (a sample qeth SUBCHANNEL statement):

SUBCHANNELS="0.0.f5f0,0.0.f5f1,0.0.f5f2"

Where value can be 0 or 1.

Use LAYER2="0" to operate an OSA or HiperSockets device in layer 3 mode (NETTYPE="qeth"). Use LAYER2="1" for layer 2 mode. For virtual network devices under z/VM this setting must match the definition of the GuestLAN or VSWITCH to which the device is coupled.

To use network services that operate on layer 2 (the Data Link Layer or its MAC sublayer) such as DHCP, layer 2 mode is a good choice.

The qeth device driver default for OSA devices is now layer 2 mode. To continue using the previous default of layer 3 mode, set LAYER2="0" explicitly.

Where value can be 0 or 1.

Specify VSWITCH="1" when connecting to a z/VM VSWITCH or GuestLAN, or VSWITCH="0" (or nothing at all) when using directly attached real OSA or directly attached real HiperSockets.

If you specify LAYER2="1" and VSWITCH="0", you can optionally use this parameter to specify a MAC address. Linux requires six colon-separated octets as pairs lower case hex digits - for example, MACADDR=62:a3:18:e7:bc:5f. This is different from the notation used by z/VM.

If you specify LAYER2="1" and VSWITCH="1", you must not specify the MACADDR, because z/VM assigns a unique MAC address to virtual network devices in layer 2 mode.

Where value can be 0, 1, or 3.

Specifies the CTC protocol for NETTYPE="ctc". The default is 0.

Where netmask is the netmask.

The netmask supports the syntax of a prefix integer (from 1 to 32) as specified in IPv4 classless interdomain routing (CIDR). For example, you can specify 24 instead of 255.255.255.0, or 20 instead of 255.255.240.0.

Where "server1:server2:additional_server_terms:serverN" is a list of DNS servers, separated by colons. For example:

DNS="10.1.2.3:10.3.2.1"

Where "domain1:domain2:additional_dns_terms:domainN" is a list of the search domains, separated by colons. For example:

SEARCHDNS="subdomain.domain:domain"

You only need to specify SEARCHDNS= if you specify the DNS= parameter.

Defines the DASD or range of DASDs to configure for the installation.

The installation program supports a comma-separated list of device bus IDs, or ranges of device bus IDs with the optional attributes ro, diag, erplog, and failfast. Optionally, you can abbreviate device bus IDs to device numbers with leading zeros stripped. Any optional attributes should be separated by colons and enclosed in parentheses. Optional attributes follow a device bus ID or a range of device bus IDs.

The only supported global option is autodetect. This does not support the specification of non-existent DASDs to reserve kernel device names for later addition of DASDs. Use persistent DASD device names such as /dev/disk/by-path/name to enable transparent addition of disks later. Other global options such as probeonly, nopav, or nofcx are not supported by the installation program.

Only specify those DASDs that need to be installed on your system. All unformatted DASDs specified here must be formatted after a confirmation later on in the installation program.

Add any data DASDs that are not needed for the root file system or the /boot partition after installation.

For example:

DASD="eb1c,0.0.a000-0.0.a003,eb10-eb14(diag),0.0.ab1c(ro:diag)"

For FCP-only environments, remove the DASD= option from the CMS configuration file to indicate no DASD is present.

FCP_n="device_bus_ID [WWPN FCP_LUN]"

Where:

Specifies a path to a tree containing install.img, not to the install.img directly. Otherwise, follows the same syntax as inst.repo=. If inst.stage2 is specified, it typically takes precedence over other methods of finding install.img. However, if Anaconda finds install.img on local media, the inst.stage2 URL will be ignored.

If inst.stage2 is not specified and install.img cannot be found locally, Anaconda looks to the location given by inst.repo= or method=.

If only inst.stage2= is given without inst.repo= or method=, Anaconda uses whatever repos the installed system would have enabled by default for installation.

Use the option multiple times to specify multiple HTTP, HTTPS or FTP sources. The HTTP, HTTPS or FTP paths are then tried sequentially until one succeeds:

inst.stage2=http://hostname/path_to_install_tree/
inst.stage2=http://hostname/path_to_install_tree/
inst.stage2=http://hostname/path_to_install_tree/