Shrink an XFS partition

To shrink an XFS partition, follow these steps:

1. First, backup the data using xfsdump (-f stands for where to save the dump file and the /home stands for which mount to backup):

xfsdump -f /tmp/home.dump /home

2. Unmount the partition:

cd / 

umount /home

3. Delete the partition:

lvremove /dev/vg00/home

4. Recreate it with a smaller size:

lvcreate --name home -L 2GB vg00

5. Mount the /home partition:

mount /dev/vg00/home /home

6. Restore the data using xfsrestore:

xfsrestore -f /tmp/home.dump /home