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diff --git a/test/shell/lvm-on-md.sh b/test/shell/lvm-on-md.sh
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+#!/usr/bin/env bash
+
+# Copyright (C) 2018-2021 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
+
+SKIP_WITH_LVMPOLLD=1
+SKIP_WITH_LVMLOCKD=1
+
+. lib/inittest
+
+RUNDIR="/run"
+test -d "$RUNDIR" || RUNDIR="/var/run"
+PVS_ONLINE_DIR="$RUNDIR/lvm/pvs_online"
+VGS_ONLINE_DIR="$RUNDIR/lvm/vgs_online"
+HINTS="$RUNDIR/lvm/hints"
+
+DFDIR="$LVM_SYSTEM_DIR/devices"
+DF="$DFDIR/system.devices"
+
+_clear_online_files() {
+        # wait till udev is finished
+        aux udev_wait
+        rm -f "$PVS_ONLINE_DIR"/* "$VGS_ONLINE_DIR"/*
+}
+
+
+# This stops lvm from taking advantage of hints which
+# will have already excluded md components.
+
+# This stops lvm from asking udev if a dev is an md component.
+# LVM will ask udev if a dev is an md component, but we don't
+# want to rely on that ability in this test.
+aux lvmconf "devices/md_component_detection = 1" \
+	"devices/hints = \"none\"" \
+	"devices/obtain_device_list_from_udev = 0" \
+	"devices/search_for_devnames = \"none\""
+
+aux extend_filter_md "a|/dev/md|"
+
+aux prepare_devs 3
+
+for level in 1 0 ; do
+
+# create 2 disk MD raid1 array
+# by default using metadata format 1.0 with data at the end of device
+#
+# When a raid0 md array is stopped, the components will not look like
+# duplicate PVs as they do with raid1.
+# mdadm does not seem to like --chunk=64 with raid1
+case "$level" in
+0) CHUNK="--chunk=64" ;;
+*) CHUNK="" ;;
+esac
+aux mdadm_create --metadata=1.0 --level=$level $CHUNK --raid-devices=2 "$dev1" "$dev2"
+mddev=$(< MD_DEV)
+
+vgcreate $vg "$mddev"
+
+lvmdevices || true
+pvs -o+deviceidtype,deviceid
+
+PVIDMD=$(get pv_field "$mddev" uuid | tr -d - )
+
+lvcreate -n $lv1 -l 2 $vg
+lvcreate -n $lv2 -l 2 -an $vg
+
+lvchange -ay $vg/$lv2
+check lv_field $vg/$lv1 lv_active "active"
+
+# lvm does not show md components as PVs
+pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs | tee out
+not grep "$dev1" out
+not grep "$dev2" out
+
+vgchange -an $vg
+
+# When the md device is started, lvm will see that and know to
+# scan for md components, so stop the md device to remove this
+# advantage so we will test the fallback detection.
+mdadm --stop "$mddev"
+aux udev_wait
+
+# The md components should still be detected and excluded.
+not pvs "$dev1"
+not pvs "$dev2"
+pvs | tee out
+not grep "$dev1" out
+not grep "$dev2" out
+
+pvs 2>&1|tee out
+not grep "Not using device" out
+
+# should not activate from the md legs
+not vgchange -ay $vg
+
+# should not show an active lv
+not dmsetup info $vg-$lv1
+
+# should not allow updating vg
+not lvcreate -l1 $vg
+
+# should not activate from the md legs
+_clear_online_files
+pvscan --cache -aay "$dev1"
+pvscan --cache -aay "$dev2"
+
+test ! -f "$RUNDIR/lvm/pvs_online/$PVIDMD"
+test ! -f "$RUNDIR/lvm/vgs_online/$vg"
+
+# should not show an active lv
+not dmsetup info $vg-$lv1
+
+aux mdadm_assemble "$mddev" "$dev1" "$dev2"
+
+not pvs "$dev1"
+not pvs "$dev2"
+pvs | tee out
+not grep "$dev1" out
+not grep "$dev2" out
+
+lvs $vg
+vgchange -an $vg
+
+# should not activate from the md legs
+_clear_online_files
+pvscan --cache -aay "$dev1"
+pvscan --cache -aay "$dev2"
+
+test ! -f "$RUNDIR/lvm/pvs_online/$PVIDMD"
+test ! -f "$RUNDIR/lvm/vgs_online/$vg"
+
+# should not show an active lv
+not dmsetup info $vg-$lv1
+
+vgchange -ay $vg
+
+check lv_field $vg/$lv1 lv_active "active"
+
+vgchange -an $vg
+
+_clear_online_files
+pvscan --cache -aay "$mddev"
+
+test -f "$RUNDIR/lvm/pvs_online/$PVIDMD"
+test -f "$RUNDIR/lvm/vgs_online/$vg"
+
+check active $vg $lv1
+
+vgchange -an $vg
+vgremove -f $vg
+
+aux cleanup_md_dev
+aux wipefs_a "$dev1" "$dev2"
+
+done
+
+
+# Repeat tests using the default config settings
+
+aux lvmconf "devices/hints = \"all\"" \
+	"devices/obtain_device_list_from_udev = 1" \
+	"devices/search_for_devnames = \"none\""
+
+rm $DF || true
+
+# create 2 disk MD raid0 array
+# by default using metadata format 1.0 with data at the end of device
+# When a raid0 md array is stopped, the components will not look like
+# duplicate PVs as they do with raid1.
+
+aux mdadm_create --metadata=1.0 --level=0 --chunk=64 --raid-devices=2 "$dev1" "$dev2"
+mddev=$(< MD_DEV)
+
+# Create an unused PV so that there is at least one PV in the hints
+# when the MD dev is stopped.  If there are no PVs, the hints are
+# empty, and the code falls back to scanning all, and we do not end
+# up testing the code with hints actively used.
+pvcreate "$dev3"
+
+vgcreate $vg "$mddev"
+
+PVIDMD=$(get pv_field "$mddev" uuid | tr -d - )
+
+lvcreate -n $lv1 -l 2 $vg
+lvcreate -n $lv2 -l 2 -an $vg
+
+lvchange -ay $vg/$lv2
+check lv_field $vg/$lv1 lv_active "active"
+
+# lvm does not show md components as PVs
+pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep "$dev1" out
+not grep "$dev2" out
+
+grep "$mddev" "$HINTS"
+grep "$dev3" "$HINTS"
+not grep "$dev1" "$HINTS"
+not grep "$dev2" "$HINTS"
+
+vgchange -an $vg
+
+# When the md device is started, lvm will see that and know to
+# scan for md components, so stop the md device to remove this
+# advantage so we will test the fallback detection.
+mdadm --stop "$mddev"
+aux udev_wait
+
+# A WARNING indicating duplicate PVs is printed by 'pvs' in this
+# case.  It's printed during the scan, but after the scan, the
+# md component detection is run on the devs and they are dropped
+# when we see they are md components. So, we ignore the warning
+# containing the word duplicate, and look for the "Not using device"
+# message, which shouldn't appear, as it would indicate that
+# we didn't drop the md components.
+# FIXME: we should avoid printing the premature warning indicating
+# duplicate PVs which are eventually recognized as md components
+# and dropped.
+pvs 2>&1|tee out1
+grep -v -e WARNING -e "Devices file PVID" out1 > out2
+not grep "Not using device" out2
+not grep "$mddev" out2
+not grep "$dev1" out2
+not grep "$dev2" out2
+grep "$dev3" out2
+cat "$HINTS"
+
+pvs 2>&1|tee out1
+grep -v -e WARNING -e "Devices file PVID" out1 > out2
+not grep "Not using device" out2
+not grep "$mddev" out2
+not grep "$dev1" out2
+not grep "$dev2" out2
+grep "$dev3" out2
+cat "$HINTS"
+
+# The md components should still be detected and excluded.
+not pvs "$dev1"
+not pvs "$dev2"
+pvs | tee out
+not grep "$dev1" out
+not grep "$dev2" out
+grep "$dev3" out
+
+# should not activate from the md legs
+not vgchange -ay $vg
+
+# should not show an active lv
+not dmsetup info $vg-$lv1
+
+# should not allow updating vg
+not lvcreate -l1 $vg
+
+# should not activate from the md legs
+_clear_online_files
+pvscan --cache -aay "$dev1"
+pvscan --cache -aay "$dev2"
+
+test ! -f "$RUNDIR/lvm/pvs_online/$PVIDMD"
+test ! -f "$RUNDIR/lvm/vgs_online/$vg"
+
+# should not show an active lv
+not dmsetup info $vg-$lv1
+
+# start the md dev
+aux mdadm_assemble "$mddev" "$dev1" "$dev2"
+
+not pvs "$dev1"
+not pvs "$dev2"
+pvs | tee out
+not grep "$dev1" out
+not grep "$dev2" out
+
+lvs $vg
+vgchange -an $vg
+
+# should not activate from the md legs
+_clear_online_files
+pvscan --cache -aay "$dev1"
+pvscan --cache -aay "$dev2"
+
+test ! -f "$RUNDIR/lvm/pvs_online/$PVIDMD"
+test ! -f "$RUNDIR/lvm/vgs_online/$vg"
+
+# should not show an active lv
+not dmsetup info $vg-$lv1
+
+vgchange -ay $vg
+
+check lv_field $vg/$lv1 lv_active "active"
+
+vgchange -an $vg
+
+_clear_online_files
+pvscan --cache -aay "$mddev"
+
+test -f "$RUNDIR/lvm/pvs_online/$PVIDMD"
+test -f "$RUNDIR/lvm/vgs_online/$vg"
+
+check active $vg $lv1
+
+vgchange -an $vg
+vgremove -f $vg
+
+aux cleanup_md_dev