tests: add gfs-pool test

Put back a test like the old one that was removed
in d709d8445f.

It verifies that lvm will ignore and not use a
gfs-pool device.

test/shell/pool-labels.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+# lvmetad does not handle pool labels so skip test.
+SKIP_WITH_LVMLOCKD=1
+SKIP_WITH_LVMETAD=1
+SKIP_WITH_LVMPOLLD=1
+
+. lib/inittest
+
+env printf "" || skip # skip if printf is not available
+
+# create the old GFS pool labeled linear devices
+create_pool_label_()
+{
+  # FIXME
+  # echo -e is bashism, dash builtin sh doesn't do \xNN in printf either
+  # printf comes from coreutils, and is probably not posix either
+  env printf "\x01\x16\x70\x06\x5f\xcf\xff\xb9\xf8\x24\x8apool1" | dd of="$2" bs=5 seek=1 conv=notrunc
+  env printf "\x04\x01\x03\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x0$1\x68\x01\x16\x70\x00\x00\x00\x00\x00\x06\x5f\xd0" | dd of=$2 bs=273 seek=1 conv=notrunc
+  aux notify_lvmetad "$2"
+}
+
+
+aux prepare_devs 2
+
+create_pool_label_ 0 "$dev1"
+create_pool_label_ 1 "$dev2"
+
+# verify that lvm will ignore and not use a gfs-pool device
+
+not pvs "$dev1"
+
+# check that pvcreate fails without -ff on the pool device
+not pvcreate "$dev1"
+