IBM RS/6000 SP, Problem Determination Manual

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This soft copy for use by IBM employees only.
perform a network boot for diagnostic reasons, the file
/usr/lib/boot/network/rc.diag is copied and sourced. The last possible script
is /usr/lib/boot/network/rc.dd_boot, but it is not used in the RS/6000 SP
environment. It would perform a normal network boot (for instance, in a
diskless/dataless environment).
The /etc/rc.bos_inst script also distinguishes boot phases.
In the first phase, some filesystems and files are mounted from the installation
server. This list of directories is defined in the NIM_MOUNTS environment
variable, set by the script /SPOT/niminfo.
This list includes the directory /spdata/sys1/install/lppsource, which is mounted
over /SPOT/usr/sys/inst.images; the file /spdata/sys1/install/pssp/bosinst_data,
which is mounted over /NIM_BOSINST_DATA, and the mksysb file
/spdata/sys1/install/images/bos.obj.ssp.41, which is mounted on
/NIM_BOS_IMAGE.
In case one of these mounts cannot be performed, you will see the LED error
code 611.
The /usr/lpp/bosinst/bi_main script is called from /etc/rc.bos_inst during the
second phase of /sbin/rc.boot. This script triggers the installation process.
If you have problems within the beginning of the installation, look at some of
these scripts to figure out which condition may cause the installation to fail.
Let
′
s have a closer look at the /tftpboot/<hostname>.info file to gain a better
understanding of some parameters of the installation process. This will help us
to find and fix network boot and installation-related problems.
2.10.1.1 The /tftpboot/<hostname>.info File
export NIM_NAME=sphps03
export NIM_MASTER_HOSTNAME=spcntl.aixedu
export RC_CONFIG=rc.bos_inst
export SPOT=spcntl.aixedu:/usr
export NIM_BOSINST_DATA=/NIM_BOSINST_DATA
export NIM_BOS_IMAGE=/NIM_BOS_IMAGE
export NIM_BOS_FORMAT=mksysb
export NIM_MOUNTS=
″
spcntl.aixedu:/spdata/sys1/install/lppsource: \
/SPOT/usr/sys/inst.images:dir \
spcntl.aixedu:/spdata/sys1/install/pssp/bosinst_data:/NIM_BOSINST_DATA:file \
spcntl.aixedu:/spdata/sys1/install/images/bos.obj.ssp.41:/NIM_BOS_IMAGE:file
″
This is only an excerpt of some important variables of the
/tftpboot/<hostname>.info file created for a installation of a mksysb image.
NIM_NAME
This variable defines the name of the NIM client object owning
this file.
Chapter 2. The Installation Process
63