Without the partition being a logical volume will that make it difficult to resize?It would have been easier if you had actually had root as a logical volume, I don't see what you didn't setup the actual root partition as a logical volume since you did it for your /data volume.
It can be done be resize the partitions using fdisk or gparted but others here on the forums will be better to able to help with that.Without the partition being a logical volume will that make it difficult to resize?
The OP's root volume is a normal partition and not using lvm so this won't do any good, only the volume mount on /data is setup as lvm with a logical volume called root.You need extend the lvs first in volume group before you expand the /dev/mapper
1. Check the lvs by using command lvs or lsblk
2. Check the vgs (volume group space status) whether the volume group have enough space or not (if not then you need to increate disk)
3. Only lvsextend the lvs size