166 Delivering Continuity and Extreme Capacity with the IBM DB2 pureScale Feature
5. Run cfgmgr on all other hosts to retrieve the PVID from the storage array and
run lspv to return the list shown in Example 3-35.
Example 3-35 Retrieve PVID information from the storage array
hdisk0 00c201d5c8bf44ab rootvg
hdisk1 00c201d5e7d5e775 None
hdisk2 00c201d5e81c4444 None
hdisk3 none None
hdisk4 none None
6. Compare the hdisk2 PVID from all hosts and ensure that they are all
the same.
3.3.8 Configuring the I/O completion ports
You must configure the I/O completion ports on AIX before you install the DB2
pureScale feature. To configure these ports, complete the following steps:
1. Run lslpp to check whether the IOCP module is installed on your system:
lslpp -l bos.iocp.rte
Example 3-36 shows the output from this command.
Example 3-36 Check that the IOCP module is installed on the system
Fileset Level State Description
Path: /usr/lib/objrepos
bos.iocp.rte APPLIED I/O Completion Ports API
Path: /etc/objrepos
bos.iocp.rte COMMITTED I/O Completion Ports API
2. Run the following command to check whether the status of IOCP
is available:
lsdev -Cc iocp
The output should be look like:
iocp0 Available I/O Completion Ports
3. If the IOCP port status is Defined, change it to Available:
a. Log in as root and run smitty iocp.
b. Select the Change / Show Characteristics of I/O Completion Ports option.
c. Switch the configured state at system restart from Defined to Available.
d. Reboot the system or run cfgmgr.

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