Now, let’s create a volume group, name it cinder-volumes, and make sure that it persists after a reboot:

dd if=/dev/zero of=cinder-volumes bs=1 count=0 seek=2G
losetup /dev/loop2 cinder-volumes
fdisk /dev/loop2

And at the fdisk prompt, enter the following commands:

n
p
1
ENTER
ENTER
t
8e
w

Proceed to create the physical volume and then the volume group itself:

pvcreate /dev/loop2
vgcreate cinder-volumes /dev/loop2

Now, let’s add this to the rc.local to make sure that we don’t lose this volume on a server reboot

Add the following to the file before the exit 0 line:

#the path is wherever you ran the previous two steps + "cinder-volumes"
losetup /dev/loop2 <PATH_TO_VG>