[lvm-devel] master - tests: duplicate-pvs-md
David Teigland
teigland at sourceware.org
Fri Aug 16 18:28:57 UTC 2019
Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=987f2733c76cff60eaf71b01f33ec8126121d792
Commit: 987f2733c76cff60eaf71b01f33ec8126121d792
Parent: 83261b79b578f213127af6350c555ec347b7211a
Author: David Teigland <teigland at redhat.com>
AuthorDate: Fri Aug 16 13:22:58 2019 -0500
Committer: David Teigland <teigland at redhat.com>
CommitterDate: Fri Aug 16 13:26:12 2019 -0500
tests: duplicate-pvs-md
Testing duplicate PV handling for various md device setups/states.
---
test/shell/duplicate-pvs-md0.sh | 438 ++++++++++++++++++++++++++++
test/shell/duplicate-pvs-md1.sh | 602 +++++++++++++++++++++++++++++++++++++++
2 files changed, 1040 insertions(+), 0 deletions(-)
diff --git a/test/shell/duplicate-pvs-md0.sh b/test/shell/duplicate-pvs-md0.sh
new file mode 100644
index 0000000..5578a0c
--- /dev/null
+++ b/test/shell/duplicate-pvs-md0.sh
@@ -0,0 +1,438 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2012 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
+
+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"
+
+_clear_online_files() {
+ # wait till udev is finished
+ aux udev_wait
+ rm -f "$PVS_ONLINE_DIR"/*
+ rm -f "$VGS_ONLINE_DIR"/*
+}
+
+. lib/inittest
+
+test -f /proc/mdstat && grep -q raid0 /proc/mdstat || \
+ modprobe raid0 || skip
+
+aux lvmconf 'devices/md_component_detection = 1'
+
+# 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/obtain_device_list_from_udev = 0'
+
+aux extend_filter_LVMTEST "a|/dev/md|"
+
+aux prepare_devs 4
+
+# 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 "$dev3"
+
+## Test variations:
+# PV on md raid1|raid0, md_component_checks auto|start, mddev start|stopped,
+# one raid dev disabled when mddev is stopped.
+
+
+##########################################
+# PV on an md raid0 device, auto+started
+# md_component_checks: auto (not start)
+# mddev: started (not stopped)
+#
+
+aux lvmconf 'devices/md_component_checks = "auto"'
+
+aux prepare_md_dev 0 64 2 "$dev1" "$dev2"
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+# pvs shows only the md dev as PV
+pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# normal activation works
+lvchange -ay $vg/$lv1
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation all works
+_clear_online_files
+pvscan --cache -aay
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation from mddev works
+_clear_online_files
+pvscan --cache -aay "$mddev"
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+not grep "active" out
+
+vgchange -an $vg
+vgremove -f $vg
+aux cleanup_md_dev
+
+
+##########################################
+# PV on an md raid0 device, start+started
+# md_component_checks: start (not auto)
+# mddev: started (not stopped)
+#
+
+aux lvmconf 'devices/md_component_checks = "start"'
+
+aux prepare_md_dev 0 64 2 "$dev1" "$dev2"
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+# pvs shows only the md dev as PV
+pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+# N.B. in this case hints are disabled for duplicate pvs seen by scan
+# it would be preferrable if this didn't happen as in auto mode, but it's ok.
+# grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# normal activation works
+lvchange -ay $vg/$lv1
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation all works
+_clear_online_files
+pvscan --cache -aay
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation from mddev works
+_clear_online_files
+pvscan --cache -aay "$mddev"
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# N.B. with raid0 the component because the PV/size difference
+# triggers and md component check, whereas with raid1 it doesn't.
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+not grep "active" out
+
+vgchange -an $vg
+vgremove -f $vg
+aux cleanup_md_dev
+
+
+##########################################
+# PV on an md raid0 device, auto+stopped
+# md_component_checks: auto (not start)
+# mddev: stopped (not started)
+#
+
+aux lvmconf 'devices/md_component_checks = "auto"'
+
+aux prepare_md_dev 0 64 2 "$dev1" "$dev2"
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+aux cleanup_md_dev
+
+##########################################
+# PV on an md raid0 device, start+stopped
+# md_component_checks: start (not auto)
+# mddev: stopped (not started)
+#
+
+aux lvmconf 'devices/md_component_checks = "start"'
+
+wipefs -a "$dev1" "$dev2"
+aux prepare_md_dev 0 64 2 "$dev1" "$dev2"
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+# N.B. it would be preferrable if dev1 did not appear in hints but it's ok
+# not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1" || true
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2" || true
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+not grep "active" out
+
+aux cleanup_md_dev
+
+
+##########################################
+# PV on an md raid0 device, start+stopped
+# md_component_checks: start (not auto)
+# mddev: stopped (not started)
+# only one raid dev online
+#
+
+aux lvmconf 'devices/md_component_checks = "start"'
+
+wipefs -a "$dev1" "$dev2"
+aux prepare_md_dev 0 64 2 "$dev1" "$dev2"
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# disable one dev of the md device
+aux disable_dev "$dev2"
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+# N.B. would be preferrable for this md component to not be in hints
+# grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+aux enable_dev "$dev2"
+aux udev_wait
+cat /proc/mdstat
+# for some reason enabling dev2 starts an odd md dev
+mdadm --stop "$mddev" || true
+mdadm --stop --scan
+cat /proc/mdstat
+wipefs -a "$dev1" || true
+wipefs -a "$dev2" || true
+
+##########################################
+# PV on an md raid0 device, auto+stopped
+# md_component_checks: auto (not start)
+# mddev: stopped (not started)
+# only one raid dev online
+#
+
+aux lvmconf 'devices/md_component_checks = "auto"'
+
+aux prepare_md_dev 0 64 2 "$dev1" "$dev2"
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# disable one leg
+aux disable_dev "$dev2"
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+aux enable_dev "$dev2"
+aux udev_wait
+cat /proc/mdstat
+# for some reason enabling dev2 starts an odd md dev
+mdadm --stop "$mddev" || true
+mdadm --stop --scan
+cat /proc/mdstat
+wipefs -a "$dev1" || true
+wipefs -a "$dev2" || true
diff --git a/test/shell/duplicate-pvs-md1.sh b/test/shell/duplicate-pvs-md1.sh
new file mode 100644
index 0000000..47b5bac
--- /dev/null
+++ b/test/shell/duplicate-pvs-md1.sh
@@ -0,0 +1,602 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2012 Red Hat, Inc. All rights reserved.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+# . different PV/VG's that happen to have the same PVID
+# . a single PV/VG cloned to another device
+# . dm wrapper around a PV
+# . a single PV/VG cloned plus a dm wrapper (two separate dups of a PV)
+
+SKIP_WITH_LVMPOLLD=1
+
+RUNDIR="/run"
+test -d "$RUNDIR" || RUNDIR="/var/run"
+PVS_ONLINE_DIR="$RUNDIR/lvm/pvs_online"
+VGS_ONLINE_DIR="$RUNDIR/lvm/vgs_online"
+HINTS="$RUNDIR/lvm/hints"
+
+_clear_online_files() {
+ # wait till udev is finished
+ aux udev_wait
+ rm -f "$PVS_ONLINE_DIR"/*
+ rm -f "$VGS_ONLINE_DIR"/*
+}
+
+. lib/inittest
+
+test -f /proc/mdstat && grep -q raid1 /proc/mdstat || \
+ modprobe raid1 || skip
+
+aux lvmconf 'devices/md_component_detection = 1'
+
+# This stops lvm from asking udev if a dev is an md component.
+# LVM will ask udev if a dev is an md component, but we don't
+# want to rely on that ability in this test.
+aux lvmconf 'devices/obtain_device_list_from_udev = 0'
+
+aux extend_filter_LVMTEST "a|/dev/md|"
+
+aux prepare_devs 4
+
+# Create an unused PV so that there is at least one PV in the hints
+# when the MD dev is stopped. If there are no PVs, the hints are
+# empty, and the code falls back to scanning all, and we do not end
+# up testing the code with hints actively used.
+pvcreate "$dev3"
+
+## Test variations:
+# PV on md raid1|raid0, md_component_checks auto|start, mddev start|stopped,
+# one leg disabled when mddev is stopped.
+
+
+##########################################
+# PV on an md raid1 device, auto+started
+# md_component_checks: auto (not start)
+# mddev: started (not stopped)
+#
+
+aux lvmconf 'devices/md_component_checks = "auto"'
+
+aux prepare_md_dev 1 64 2 "$dev1" "$dev2"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+# pvs shows only the md dev as PV
+pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# normal activation works
+lvchange -ay $vg/$lv1
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation all works
+_clear_online_files
+pvscan --cache -aay
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation from mddev works
+_clear_online_files
+pvscan --cache -aay "$mddev"
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+not grep "active" out
+
+vgchange -an $vg
+vgremove -f $vg
+aux cleanup_md_dev
+
+
+##########################################
+# PV on an md raid1 device, start+started
+# md_component_checks: start (not auto)
+# mddev: started (not stopped)
+#
+
+aux lvmconf 'devices/md_component_checks = "start"'
+
+aux prepare_md_dev 1 64 2 "$dev1" "$dev2"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+# pvs shows only the md dev as PV
+pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+# N.B. in this case hints are disabled for duplicate pvs seen by scan
+# it would be preferrable if this didn't happen as in auto mode, but it's ok.
+# grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# normal activation works
+lvchange -ay $vg/$lv1
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation all works
+_clear_online_files
+pvscan --cache -aay
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# pvscan activation from mddev works
+_clear_online_files
+pvscan --cache -aay "$mddev"
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+vgchange -an $vg
+
+# N.B. pvscan --cache on the md component does not detect it's
+# a md component, and marks the PVID online, then does activation,
+# but the activation phase scans all devs, finds duplicates between
+# components and the actual md dev, chooses the md dev, and activates
+# the VG using the md dev.
+# The behavior with auto mode is preferable in which this does nothing,
+# but this is ok.
+_clear_online_files
+pvscan --cache -aay "$dev1"
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+lvs -o active $vg |tee out || true
+grep "active" out
+# FIXME: verify the LV is using the md dev and not the component
+
+vgchange -an $vg
+vgremove -f $vg
+aux cleanup_md_dev
+
+
+##########################################
+# PV on an md raid1 device, auto+stopped
+# md_component_checks: auto (not start)
+# mddev: stopped (not started)
+#
+
+aux lvmconf 'devices/md_component_checks = "auto"'
+
+aux prepare_md_dev 1 64 2 "$dev1" "$dev2"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+aux cleanup_md_dev
+
+##########################################
+# PV on an md raid1 device, start+stopped
+# md_component_checks: start (not auto)
+# mddev: stopped (not started)
+#
+
+aux lvmconf 'devices/md_component_checks = "start"'
+
+wipefs -a "$dev1" "$dev2"
+aux prepare_md_dev 1 64 2 "$dev1" "$dev2"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1" || true
+# N.B it would be preferrable if this did not recognize the PV on the
+# component and attempt to activate, like auto mode, but this is ok,
+# the activation scans all devs, sees duplicates, which triggers md
+# component detection which eliminates both devs, leaving no vg to activate.
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2" || true
+lvs -o active $vg |tee out || true
+not grep "active" out
+
+aux cleanup_md_dev
+
+
+##########################################
+# PV on an md raid1 device, start+stopped
+# md_component_checks: start (not auto)
+# mddev: stopped (not started)
+# only one raid image online
+#
+# N.B. This test case is just characterizing the current behavior, even
+# though the behavior it's testing for is not what we'd want to happen.
+# In this scenario, we have disabled/avoided everything that would
+# lead lvm to discover that dev1 is an md component, so dev1 is used
+# as the PV. Multiple default settings need to be changed to get to
+# this unwanted behavior (md_component_checks,
+# obtain_device_list_from_udev), and multiple other conditions also
+# need to be true (md device stopped, only one leg visible).
+
+aux lvmconf 'devices/md_component_checks = "start"'
+
+wipefs -a "$dev1" "$dev2"
+aux prepare_md_dev 1 64 2 "$dev1" "$dev2"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# disable one leg of the md device, with raid1 this means duplicates
+# will not be seen for the legs. duplicate handling can trigger
+# md component detection, so no duplicates means md components may
+# not be detected as easily.
+aux disable_dev "$dev2"
+
+# pvs does not show the PV
+not pvs "$mddev"
+pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+lvchange -ay $vg/$lv1
+lvs $vg
+vgchange -an $vg
+
+_clear_online_files
+pvscan --cache -aay
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+vgchange -an $vg
+
+_clear_online_files
+pvscan --cache -aay "$dev1"
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+vgchange -an $vg
+
+aux enable_dev "$dev2"
+aux udev_wait
+cat /proc/mdstat
+# for some reason enabling dev2 starts an odd md dev
+mdadm --stop "$mddev" || true
+mdadm --stop --scan
+cat /proc/mdstat
+wipefs -a "$dev1" || true
+wipefs -a "$dev2" || true
+
+##########################################
+# PV on an md raid1 device, auto+stopped
+# md_component_checks: auto (not start)
+# mddev: stopped (not started)
+# only one raid image online
+#
+
+aux lvmconf 'devices/md_component_checks = "auto"'
+
+aux prepare_md_dev 1 64 2 "$dev1" "$dev2"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# disable one leg
+aux disable_dev "$dev2"
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+pvscan --cache
+not grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+aux enable_dev "$dev2"
+aux udev_wait
+cat /proc/mdstat
+# for some reason enabling dev2 starts an odd md dev
+mdadm --stop "$mddev" || true
+mdadm --stop --scan
+cat /proc/mdstat
+wipefs -a "$dev1" || true
+wipefs -a "$dev2" || true
+
+
+##########################################
+# PV on an md raid1 device, auto+stopped
+# md_component_checks: auto (not start)
+# mddev: stopped (not started)
+# three raid images
+#
+
+aux lvmconf 'devices/md_component_checks = "auto"'
+
+aux prepare_md_dev 1 64 3 "$dev1" "$dev2" "$dev4"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+not pvs "$dev4"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+not grep "$dev4" out
+pvscan --cache
+not grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+not grep "$dev4" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev4"
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+aux cleanup_md_dev
+
+
+##########################################
+# PV on an md raid1 device, start+stopped
+# md_component_checks: start (not auto)
+# mddev: stopped (not started)
+# three raid images
+
+aux lvmconf 'devices/md_component_checks = "start"'
+
+wipefs -a "$dev1" "$dev2" "$dev4"
+aux prepare_md_dev 1 64 3 "$dev1" "$dev2" "$dev4"
+sleep 4
+cat /proc/mdstat
+mddev=$(< MD_DEV)
+pvdev=$(< MD_DEV_PV)
+pvcreate "$mddev"
+PVIDMD=`pvs $mddev --noheading -o uuid | tr -d - | awk '{print $1}'`
+echo $PVIDMD
+vgcreate $vg "$mddev"
+lvcreate -n $lv1 -l 2 -an $vg
+
+mdadm --stop "$mddev"
+cat /proc/mdstat
+
+# pvs does not show the PV
+not pvs "$mddev"
+not pvs "$dev1"
+not pvs "$dev2"
+not pvs "$dev4"
+pvs > out
+not grep $mddev out
+not grep "$dev1" out
+not grep "$dev2" out
+not grep "$dev4" out
+pvscan --cache
+not grep "$mddev" $HINTS
+not grep "$dev1" $HINTS
+not grep "$dev2" $HINTS
+not grep "$dev4" $HINTS
+
+# the vg is not seen, normal activation does nothing
+not lvchange -ay $vg/$lv1
+not lvs $vg
+
+# pvscan activation all does nothing
+_clear_online_files
+pvscan --cache -aay
+not ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+not ls "$RUNDIR/lvm/vgs_online/$vg"
+
+# pvscan activation from md components does nothing
+_clear_online_files
+pvscan --cache -aay "$dev1" || true
+# N.B it would be preferrable if this did not recognize the PV on the
+# component and attempt to activate, like auto mode, but this is ok,
+# the activation scans all devs, sees duplicates, which triggers md
+# component detection which eliminates both devs, leaving no vg to activate.
+ls "$RUNDIR/lvm/pvs_online/$PVIDMD"
+ls "$RUNDIR/lvm/vgs_online/$vg"
+pvscan --cache -aay "$dev2" || true
+lvs -o active $vg |tee out || true
+not grep "active" out
+pvscan --cache -aay "$dev4" || true
+lvs -o active $vg |tee out || true
+not grep "active" out
+
+aux cleanup_md_dev
+
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