1 - Shrink logical volume lv1_1 on volume group testvg1 from 20.00 GiB to 10.00 GiB-> 2
2 - Create logical volume lv1_2 (10.00 GiB) on volume group testvg1 ->
3 - Create partition /dev/sdb3 (10.00 GiB) -> 4 6
4 - Set id of partition /dev/sdb3 to Linux LVM -> 5
5 - Create physical volume on /dev/sdb3 -> 9
6 - Create partition /dev/sdb4 (5.00 GiB) -> 7
7 - Set id of partition /dev/sdb4 to Linux LVM -> 8
8 - Create physical volume on /dev/sdb4 -> 9
9 - Create volume group testvg2 (15.00 GiB) from /dev/sdb3 (10.00 GiB) and /dev/sdb4 (5.00 GiB) -> 10
10 - Create logical volume lv2_1 (15.00 GiB) on volume group testvg2 ->
