Taken from the CentOS Install Guide:
While text mode installations are not explicitly documented, those using the text mode installation program can easily follow the GUI installation instructions. One thing to note is that manipulation of LVM (Logical Volume Management) disk volumes is only possible in graphical mode. In text mode it is only possible to view and accept the default LVM setup.
Dear CentOS, please learn that doing LVM setup is even possible with the Debian text mode installer. It can’t be that hard
[UPDATE]: I need to admit, it’s not CentOS to blame to, but RedHat, as CentOS is a clone of RHEL.