Resizing + creating LVM partitions

display logical volumes:

:~# vgdisplay -v vg00

#resize a partition and the filesystem on it:

:~# lvextend -L +20G /dev/vg00/var
:~# xfs_growfs /var

#create a new volume in volumegroup vg00

:~# lvcreate -L 75G -n data2 vg00
:~# mkfs.xfs /dev/vg00/data2

:~# mkdir /data2
:~# mount -t xfs /dev/vg00/data2 /data2
:~# nano /etc/fstab