GPFS command processing
GPFS commands fall into two categories: those that are processed locally and those that are processed at the file system manager for the file system involved in the command.
The file system manager is used to process any command that alters the state of the file system. When commands are issued and the file system is not mounted, a file system manager is appointed for the task. The mmchdisk command and the mmfsck command represent two typical types of commands that are processed at the file system manager.