An XFS file system may be grown while mounted using the xfs_growfs command, as in:

xfs_growfs /mount/point -D size

The -D size option grows the file system to the specified size (expressed in file system blocks). Without the -D size option, xfs_growfs will grow the file system to the maximum size supported by the device.

Before growing an XFS file system with -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.

For more information about growing a file system, refer to man xfs_growfs.