Changing the file system format to the latest level

You can change the file system format to the latest format supported by the currently-installed level of GPFS™ by issuing the mmchfs command with the -V full option or the -V compat option.

The full option enables all new functionality that requires different on-disk data structures. This may cause the file system to become permanently incompatible with earlier releases of GPFS. The compat option enables only changes that are backward compatible with the previous GPFS release. If all GPFS nodes that are accessing a file system (both local and remote) are running the latest level, then it is safe to use full option. Certain features may require you to run the mmmigratefs command to enable them.

For more information, see File system format changes between versions of IBM Spectrum Scale.