8.4. Increasing the Size of an XFS File System
xfs_growfs /mount/point -D size
-D sizeoption grows the file system to the specified
size(expressed in file system blocks). Without the
xfs_growfswill grow the file system to the maximum size supported by the device.
-D size, ensure that the underlying block device is of an appropriate size to hold the file system later. Use the appropriate resizing methods for the affected block device.