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To confirm that you have followed the steps correctly, you can use the 
pvdisplay
 
command as 
root
 to display the physical volumes you have available on your server:
Figure 9.10: Output of the pvdisplay command on a sample server
The screenshot shows only one volume, as it had to be formatted to fit this page. 
The 
pvdisplay
 command will show more output if you scroll up. Although we have 
some physical volumes to work with, none of them are assigned to a volume group. 
In fact, we haven't even created a volume group yet. We can now create our volume 
group with the 
vgcreate
 command, where we'll give our volume group a name and 
assign our first disk to it:
sudo vgcreate vg-test /dev/sdb
Here, I'm creating a volume group named 
vg-test
 and I'm assigning it one of the 
physical volumes I prepared earlier (
/dev/sdb
). Now that our volume group is 
created, we can use the 
vgdisplay
 command with 
sudo
 to view details about it, 
including the number of assigned disks (which should now be 
1
):

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Chapter 9