# mkdir -p /backup
# cp -r /home/* /backup
# umount /home
# df -hl
# fdisk -l
# lvremove /dev/centos/home
# vgdisplay
# lvcreate -L 5G -n home centos
# lvdisplay
# vgdisplay
# vgchange -ay centos
# mkfs -t xfs /dev/centos/home
# mount /dev/centos/home /home/
# lvextend -L +36G /dev/centos/root
# vgchange -ay centos
# xfs_growfs /dev/centos/root
# df -hl