call(["/bin/dd", "if=/dev/zero", "of=%s" % new_lvpath])
call(["/sbin/lvchange", "-a", "n", new_lvpath])
call(["/sbin/lvchange", "-a", "ey", new_lvpath])
call(["/bin/dd", "if=/dev/zero", "of=%s" % new_lvpath])
call(["/sbin/lvchange", "-a", "n", new_lvpath])
call(["/sbin/lvchange", "-a", "ey", new_lvpath])