It is necessary to edit the file /etc/rc.d/rc.boot. Look for the line that says “Mounting local filesystems” and insert the vgscan and vgchange commands just before it.

You may also want to edit the file /etc/rc.d/init.d/halt to deactivate the volume groups at shutdown. Insert the

 vgchange -an 
            

command near the end of this file just after the filesystems are unmounted or mounted read-only, before the comment that says “Now halt or reboot”.