Chapter 13. Increasing the size of an XFS file system

As a system administrator, you can increase the size of an XFS file system to make a complete use of a larger storage capacity.


It is not currently possible to decrease the size of XFS file systems.

13.1. Increasing the size of an XFS file system with xfs_growfs

This procedure describes how to grow an XFS file system using the xfs_growfs utility.


  • Ensure that the underlying block device is of an appropriate size to hold the resized file system later. Use the appropriate resizing methods for the affected block device.
  • Mount the XFS file system.


  • While the XFS file system is mounted, use the xfs_growfs utility to increase its size:

    # xfs_growfs file-system -D new-size
    • Replace file-system with the mount point of the XFS file system.
    • With the -D option, replace new-size with the desired new size of the file system specified in the number of file system blocks.

      To find out the block size in kB of a given XFS file system, use the xfs_info utility:

      # xfs_info block-device
      data     =              bsize=4096
    • Without the -D option, xfs_growfs grows the file system to the maximum size supported by the underlying device.

Additional resources

  • xfs_growfs(8) man page.