`xfs_growfs` - expand an XFS filesystem

xfs_growfs [-n] [-d] [-D size] MOUNTPOINT

Options you will use

-d: grow the data section to the size of the device (the default)
-D size: grow the data section to this many file system blocks
-n: only print the geometry, change nothing
-d: grow the data section to the size of the device (the usual case)
-D SIZE: grow the data section to SIZE filesystem blocks
-n: print the geometry, change nothing

Examples

$ sudo xfs_growfs /

grow the root XFS file system to fill its partition

$ xfs_growfs -n /

show the geometry only

Gotchas

From xfsprogs. Takes the MOUNT POINT (xfs_growfs /), not the device, and works only while mounted. XFS grows online but never shrinks.
Amazon Linux and RHEL root volumes are XFS; Ubuntu's are ext4 (resize2fs /dev/nvme0n1p1). growpart the partition first.

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