Start of change

6027-1265 [I] The fileName kernel extension does not exist. Invoking mmbuildgpl command to build the GPFS portability layer.

Explanation

The cited kernel extension does not exist.

User response

Create the needed kernel extension by compiling a custom mmfslinux module for your kernel. Refer to the steps that are available in /usr/lpp/mmfs/src/README or copy the binaries from another node with the identical environment.
End of change