Cannot create LVM
I am new to Linux and i am havind a Dedicated Debian 7.0 minimal setup server. I need to setup XEN server and host VM's. This is my FS:
Filesystem Size Used Avail Use% Mounted on
rootfs 1.8T 1.1G 1.7T 1% /
udev 10M 0 10M 0% /dev
tmpfs 4.6G 292K 4.6G 1% /run
/dev/disk/by-uuid/062ded27-e5df-4e85-b0df-0e18dd855548 1.8T 1.1G 1.7T 1% /
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 14G 0 14G 0% /run/shm
/dev/md1 496M 33M 437M 8% /boot
i am trying to create an LVM by executing pvcreate /dev/md2 and i get an error Can't open /dev/md2 exclusively. Mounted filesystem?
i suppose that on the setup they made they didn't created /home directory. Is it right? Am i doing something wrong?