# For resize logical volume need know volume group, logical volume and size to/max free size

# List of logical volumes
 lvs --all

 # In my example I have vg_debian as volume group and wont resize lv_data
 lvextend /dev/mapper/vg_debian-lv_data -l +100%FREE

 # Start online resize (for ext4)
 resize2fs /dev/mapper/vg_debian-lv_data