IBM RS/6000 SP, Руководство по определению проблем

Страница: 81 / 316

This soft copy for use by IBM employees only.
All the specified nodes are set to install and the NIM commands for resource
allocation are called.
5.
nim -Fo check psspspot
This last command resets the SPOT back to a no debug version. Do not
forget to do this step unless you have also installation problems on other
nodes.
2.10 Network Booting
There are three different booting modes supported by PSSP V2.1 which require a
network boot to be performed.
1. Installing nodes
Typically no external devices like tape drives or CDROM drives are
connected to the nodes of a RS/6000 SP. Therefore, it is necessary to install
the nodes over the network, including the boot phase. This also applies to
the two following tasks.
2. Maintaining nodes
Normally, the maintenance mode is used when there is a problem booting
the node, and it is necessary to get access to the
rootvg volume group to
figure out and fix the problem. More details about this mode will be given
later.
3. Diagnosing nodes
Using this mode allows you to run some diagnostics on any device, including
disks and SCSI adapters, since the node is booted from the network. This
mode will be covered later in this chapter in more detail.
The command
spbootins
prepares the installation server to be able to serve NIM
installations, including serving as network boot server. A variety of other task
are also performed by
spbootins
. For instance, the bootp_response field for the
node in the SDR is changed, and the script setup_server is called. The
configuration of the installation server itself is done by setup_server.
The following example prepares the boot/install server to install the node with
node numbers 1 and 3.
# spbootins -r install -l 1,3
The spbootins scripts supports the following boot response modes:
1. install
With this mode, setup_server will allocate the following NIM resources:
psspspot, lppsource, noprompt, psspscript and mksysb_1. Furthermore the
f i l e s / t f t p b o o t / < h o s t n a m e > . i n f o , / t f t p b o o t / < h o s t n a m e > - n e w - s r v t a b ,
/ t f t p b o o t / < h o s t n a m e > . i n s t a l l _ i n f o a n d / t f t p b o o t / < h o s t n a m e > . c o n f i g _ i n f o
are created and /etc/bootptab is updated to enable this machine to act as
boot server. The bootp_response
install requires a network boot.
2. maintenance
In case you select the maintenance bootp_response, other resources are
allocated to the NIM client representing the node which will be run in
maintenance mode: psspspot, lppsource, prompt, boot, and nim_script.
Chapter 2. The Installation Process
61