pvcreate /dev/sdb
vgcreate VolGroup2 /dev/sdb
lvcreate -n lv_logs -L1024G VolGroup2
mkfs.ext4 /dev/VolGroup2/lv_logs
mount /dev/VolGroup2/lv_logs /mnt/logs

lvcreate -l 100%FREE -n lv_logs VolGroup2

lvrename /dev/vg02/lvold /dev/vg02/lvnew
## or
lvrename vg02 lvold lvnew

vi /etc/fstab
umount /home/
mount /dev/mapper/VolGroup-lv_home /media/
mv /media/* /home/
umount /media/
lvremove /dev/VolGroup/lv_home
y
lvextend -l +100%FREE -r /dev/VolGroup/lv_root

* параметр -r заменяет resize2fs /dev/VolGroup/lv_root