3.4.2 xfs: d_type support (ftype=1) enabled by default on newly formatted partitions

For systems installed with the Oracle Linux 7 Update 4 installer, when formatting a device using XFS, d_type support is enabled automatically, which means all XFS-formatted partitions are created using the ftype=1 parameter as the default. Whereas, in previous Oracle Linux 7 updates, ftype=0 was the default parameter, meaning d_type was disabled or off and XFS-formatted partitions were created using ftype=0 as the default.

The d_type functionality exposed by this feature enables the file system to store additional metadata that is critical for overlay file system types.