Kickstart config for full disk LVM (no partitions)

kickstart_disk.cfg

# Expects 2 vm disks
# Disk 1 = 1GB
# Disk 2 = DATA (5GB or larger)
# Disk Layout
clearpart --all --initlabel --drives=sda
part biosboot --fstype=biosboot --size=1 --ondisk=sda
part /boot --fstype=xfs --size=512 --grow --ondisk=sda
logvol swap --fstype=swap --name=swap --vgname=vg01 --size=512
logvol /tmp --fstype xfs --name=tmp --vgname=vg01 --size=1024
logvol / --fstype xfs --name=root --vgname=vg01 --size=2048 --grow


%pre
pvremove -y -ff /dev/sdb
pvcreate /dev/sdb
vgcreate vg01 /dev/sdb
vgscan
%end

fyi this doesn't work on rhel8, since device tree is scanned by blivet python module in anaconda before the pre is executed. So even after the vgscan the vg01 is not known to anaconda :-(
If someone has a solution for this in rhel8?

update, this worked for me for rhel8:
#mark the whole disk as pv
partition pv.8 --grow --onpart=sdb
volgroup vg01 --pesize=4096 pv.8

You could also just tell Anaconda about the VG you made, like:

volgroup vg01 --noformat --useexisting

Also, at least from my experience, you don't need to call vgscan at the end of the %pre section ... but if there's any existing LVM setup, you may need a little more to get it cleaned up. I use something like:

%pre
vgchange -y -ff -a n --select pv_name=/dev/sdb
vgremove -y -ff --select pv_name=/dev/sdb
pvremove -y -ff /dev/sdb
pvcreate /dev/sdb
vgcreate vg01 /dev/sdb
%end