Same like ext filesystems, you can increase an XFS file system too. Even better, you can increase an XFS file system while mounted.

Here is the example:

using the xfs_growfs command tp grown an XFS file system:

# 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_g ro wfs 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.


Note
While XFS file systems can be grown while mounted, their size cannot be reduced at all.