IBM RS/6000 SP, Problem Determination Manual

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This soft copy for use by IBM employees only.
•
Ensure the file /etc/SP/expected.top does not exist on the primary node in
the partition.
•
Check that the Worm daemon is running on the primary node in the partition
and on all the other nodes.
For more details on these and other appropriate debugging options, refer to
Chapter 4, “The Switch” on page 87.
5.3 Creating Partitions
Once you have decided how to partition the system, all you need to do is to
apply the chosen configuration. There are some prerequisites, however, that
should be considered.
5.3.1 Prerequisites to System Partitioning
Always ensure there are at least two boot/install servers set up for AIX Version
3.2.5 nodes prior to upgrading or reinstalling the Control Workstation to AIX
Version 4.1. (Of course, if there is to be no AIX Version 3.2.5 partition, then this
simplifies things somewhat.)
After the migration or reinstallation of the Control Workstation, verify that all the
required products are installed by running:
# lslpp -l | grep ssp
In particular, ensure that ssp.top is installed to provide the topology files for
System Partitioning. In addition, ensure that the latest maintenance is applied to
the POWERparallel System Support Programs products to avoid the added
complication of encountering any known problems
4
.
If the system was previously installed at AIX Version 3.2.5, it is a good idea to
run with the AIX Version 4.1 Control Workstation for a period of time to ensure
that the installation was successful for all components of the POWERparallel
System Support Programs. The AIX Version 3.2.5 nodes can run in production
mode, and there will then be confidence that the installation was completely
successful.
After this period, prepare the nodes that are to run AIX Version 4.1 for
installation by running
setup_server
5
. Further detail about setup_server script
can be found in Appendix A, “RS/6000 SP Script Files” on page 229 under A.3,
“The setup_server Script” on page 239.
If all the nodes are to be installed at AIX Version 4.1, then the installation can
proceed normally and the partitioning can be set up as required when the time
is appropriate. However, if there are to be mixed partitions (that is, both AIX
Version 4.1 and AIX Version 3.2.5 partitions), then the System Partitioning must
be
applied before the AIX Version 4.1 nodes are installed. The current situation
is that mixed nodes in a partition are not supported because there are a number
of problems associated with having this type of environment.
4 Contact your IBM Support Center to obtain guidance on the PTFs you should install.
5
Refer to the SP Installation Guide, GC23-3898 for details on this procedure.
Chapter 5. System Partitioning
137