Increase by 1GB
lvextend -L +1G /dev/centos/home
Decrease by 1GB
lvreduce -L 1G /dev/centos/var
For ext3 & ext4
resize2fs /dev/centos/home
For xfs
xfs_growfs /dev/centos/home
kpartx -av /dev/volKVM/kvm106_img mount /dev/mapper/volKVM-kvm106_img1 /mnt
umount /mnt kpartx -dv /dev/volKVM/kvm106_img