This is a set of scripts for kernel-side dm-multipath testing. Current
set of scripts are stress testing of extreme situation and its coverage
is limited. But recently found dm-mpath regressions should be detectable
with this. I hope this helps people working on dm-multipath related code
as a regression test set.
Though this is created as a patch for linux kernel source, it's just for
convenience of kernel developers (I don't have a place to host this kind
of scripts). If there are better place to contribute this, please let me know.
Please check README for how-to-run and possible improvements you could
contribute in future.
---
Documentation/device-mapper/mptest/COPYING | 345 +++++++++++++++++++++
Documentation/device-mapper/mptest/README | 61 ++++
.../device-mapper/mptest/lib/backend_generic | 28 ++
.../device-mapper/mptest/lib/backend_scsidebug | 43 +++
.../device-mapper/mptest/lib/backend_tcmloop | 51 +++
.../device-mapper/mptest/lib/failpath_dm_message | 43 +++
.../device-mapper/mptest/lib/failpath_sdev_delete | 51 +++
.../device-mapper/mptest/lib/failpath_sdev_offline | 46 +++
.../device-mapper/mptest/lib/fio_validate | 41 +++
.../device-mapper/mptest/lib/mpath_generic | 119 +++++++
.../device-mapper/mptest/lib/switchpg_dm_message | 37 +++
Documentation/device-mapper/mptest/runtest | 32 ++
.../device-mapper/mptest/tests/test_00_no_failure | 30 ++
.../mptest/tests/test_01_sdev_offline | 33 ++
.../device-mapper/mptest/tests/test_02_sdev_delete | 33 ++
.../device-mapper/mptest/tests/test_03_dm_failpath | 33 ++
.../device-mapper/mptest/tests/test_04_dm_switchpg | 33 ++
17 files changed, 1059 insertions(+)
create mode 100644 Documentation/device-mapper/mptest/COPYING
create mode 100644 Documentation/device-mapper/mptest/README
create mode 100755 Documentation/device-mapper/mptest/lib/backend_generic
create mode 100755 Documentation/device-mapper/mptest/lib/backend_scsidebug
create mode 100755 Documentation/device-mapper/mptest/lib/backend_tcmloop
create mode 100755 Documentation/device-mapper/mptest/lib/failpath_dm_message
create mode 100755 Documentation/device-mapper/mptest/lib/failpath_sdev_delete
create mode 100755 Documentation/device-mapper/mptest/lib/failpath_sdev_offline
create mode 100755 Documentation/device-mapper/mptest/lib/fio_validate
create mode 100755 Documentation/device-mapper/mptest/lib/mpath_generic
create mode 100755 Documentation/device-mapper/mptest/lib/switchpg_dm_message
create mode 100755 Documentation/device-mapper/mptest/runtest
create mode 100755 Documentation/device-mapper/mptest/tests/test_00_no_failure
create mode 100755 Documentation/device-mapper/mptest/tests/test_01_sdev_offline
create mode 100755 Documentation/device-mapper/mptest/tests/test_02_sdev_delete
create mode 100755 Documentation/device-mapper/mptest/tests/test_03_dm_failpath
create mode 100755 Documentation/device-mapper/mptest/tests/test_04_dm_switchpg
diff --git a/Documentation/device-mapper/mptest/COPYING b/Documentation/device-mapper/mptest/COPYING
new file mode 100644
index 0000000..1114411
--- /dev/null
+++ b/Documentation/device-mapper/mptest/COPYING
@@ -0,0 +1,345 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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diff --git a/Documentation/device-mapper/mptest/README b/Documentation/device-mapper/mptest/README
new file mode 100644
index 0000000..b2de27c
--- /dev/null
+++ b/Documentation/device-mapper/mptest/README
@@ -0,0 +1,61 @@
+Test scripts for dm-multipath
+=============================
+
+How to run
+----------
+ # cd mptest
+ # ./runtest
+ ..
+ (verbose outputs)
+ ..
+ ** summary **
+ PASSED: test_00_no_failure test_02_sdev_delete test_03_dm_failpath
+ FAILED: test_01_sdev_offline
+
+ Or './runtest tests/test_01_sdev_offline', for example, to run a
+ specific test.
+
+
+Required tools
+--------------
+ - dmsetup
+ - fio
+ - targetcli (if MULTIPATH_BACKEND_MODULE=tcmloop)
+ - scsi_debug.ko (if MULTIPATH_BACKEND_MODULE=scsidebug)
+
+
+Improvements needed
+-------------------
+ - More realistic ALUA setups
+ * Multiple TPGs
+ * Optimized/Non-optimized groups
+ * Prefered bit
+ - More realistic transports and failure modes
+ * iSCSI
+ * FC
+ - More varieties of I/Os
+ * blk pcs
+ - Validation tests of dm table/status
+ * whether dm-mpath.ko can handle various dm table pattern correctly
+ * whether dm-mpath.ko outputs dm status correctly
+ - Better udev avoidance
+ * a lot of uevents are generated during the test, that unintendedly
+ ends up with stress testing of udev subsystem
+ * dmsetup might fail and/or stall if the avoidance is not done
+ correctly
+ - Integration test with udev and multipath-tools
+ * for realistic testing, tests involving udev and multipathd are
+ also necessary
+
+Issues
+------
+ - When run from non-interactive mode, targetcli might emit python
+ exception when called:
+ Traceback (most recent call last):
+ File "/usr/bin/targetcli", line 121, in <module>
+ main()
+ File "/usr/bin/targetcli", line 111, in main
+ shell.run_interactive()
+ File "/usr/lib/python2.7/site-packages/configshell_fb/shell.py", line 899, in run_interactive
+ readline.set_completer(old_completer)
+ NameError: global name 'readline' is not defined
diff --git a/Documentation/device-mapper/mptest/lib/backend_generic b/Documentation/device-mapper/mptest/lib/backend_generic
new file mode 100755
index 0000000..ac7843d
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/backend_generic
@@ -0,0 +1,28 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+if [ -z "${MULTIPATH_BACKEND_MODULE}" ]; then
+ echo "MULTIPATH_BACKEND_MODULE should be defined"
+ exit 1
+fi
+if [ ! -e "$LIB/backend_${MULTIPATH_BACKEND_MODULE}" ]; then
+ echo "backend_${MULTIPATH_BACKEND_MODULE} does not exist"
+ exit 1
+fi
+
+. $LIB/backend_${MULTIPATH_BACKEND_MODULE}
diff --git a/Documentation/device-mapper/mptest/lib/backend_scsidebug b/Documentation/device-mapper/mptest/lib/backend_scsidebug
new file mode 100755
index 0000000..ed41d21
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/backend_scsidebug
@@ -0,0 +1,43 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+backend_all_paths ()
+{
+ grep -l scsi_debug /sys/block/sd*/device/model | \
+ awk -F/ '{print $4}'
+}
+
+backend_all_hosts ()
+{
+ grep -l scsi_debug /sys/class/scsi_host/host*/proc_name | \
+ awk -F/ '{print $5}'
+}
+
+backend_create_device ()
+{
+ modprobe -r scsi_debug
+ modprobe scsi_debug vpd_use_hostno=0 \
+ dev_size_mb=1024 add_host=4 max_luns=1 \
+ delay=1
+}
+
+backend_delete_device ()
+{
+ rmmod scsi_debug
+}
+
diff --git a/Documentation/device-mapper/mptest/lib/backend_tcmloop b/Documentation/device-mapper/mptest/lib/backend_tcmloop
new file mode 100755
index 0000000..769ee18
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/backend_tcmloop
@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+backend_all_paths ()
+{
+ grep -l LIO-ORG /sys/block/sd*/device/vendor | \
+ awk -F/ '{print $4}'
+}
+
+backend_all_hosts ()
+{
+ grep -l tcm_loopback /sys/class/scsi_host/host*/proc_name | \
+ awk -F/ '{print $5}'
+}
+
+backend_create_device ()
+{
+ targetcli <<EOF || exit 1
+clearconfig confirm=True
+/backstores/ramdisk create rd 1G
+/loopback create naa.5001401111111111
+/loopback create naa.5001402222222222
+/loopback create naa.5001403333333333
+/loopback create naa.5001404444444444
+/loopback/naa.5001401111111111/luns create /backstores/ramdisk/rd
+/loopback/naa.5001402222222222/luns create /backstores/ramdisk/rd
+/loopback/naa.5001403333333333/luns create /backstores/ramdisk/rd
+/loopback/naa.5001404444444444/luns create /backstores/ramdisk/rd
+EOF
+}
+
+backend_delete_device ()
+{
+ echo 'clearconfig confirm=True' | targetcli
+}
+
diff --git a/Documentation/device-mapper/mptest/lib/failpath_dm_message b/Documentation/device-mapper/mptest/lib/failpath_dm_message
new file mode 100755
index 0000000..1a3bcf8
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/failpath_dm_message
@@ -0,0 +1,43 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+stopfile=stop.failpath_dm_message
+
+start_failpath_dm_message () {
+ [ -z "$MPNAME" ] && exit 1
+ local d
+ local m
+ local devs=$(mpath_all_paths)
+ local majs=$(for d in $devs; do cat /sys/block/$d/dev; done)
+
+ rm -f $stopfile
+ while [ ! -f $stopfile ]; do
+ for m in $majs; do
+ dmsetup message $MPNAME 0 "fail_path $m"
+ done
+ for m in $majs; do
+ dmsetup message $MPNAME 0 "reinstate_path $m"
+ done
+ done &
+}
+
+stop_failpath_dm_message ()
+{
+ touch $stopfile
+ wait
+}
diff --git a/Documentation/device-mapper/mptest/lib/failpath_sdev_delete b/Documentation/device-mapper/mptest/lib/failpath_sdev_delete
new file mode 100755
index 0000000..117378b
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/failpath_sdev_delete
@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+stopfile=stop.failpath_sdev_delete
+
+_reload_mpath_table () {
+ local table="$(mpath_table)"
+ echo "$table" | dmsetup load $MPNAME && \
+ dmsetup suspend --nolockfs --noflush $MPNAME && \
+ dmsetup resume $MPNAME
+}
+
+start_failpath_sdev_delete () {
+ [ -z "$MPNAME" ] && exit 1
+ local d
+ local h
+ rm -f $stopfile
+ while [ ! -f $stopfile ]; do
+ for d in $(mpath_all_paths); do
+ echo 1 > /sys/block/${d}/device/delete
+ done
+ #sleep 1
+ for h in $(mpath_all_hosts); do
+ echo '- - -' > /sys/class/scsi_host/${h}/scan
+ done
+ #sleep 1
+ _reload_mpath_table
+ done &
+}
+
+stop_failpath_sdev_delete ()
+{
+ touch $stopfile
+ wait
+ sleep 3
+}
diff --git a/Documentation/device-mapper/mptest/lib/failpath_sdev_offline b/Documentation/device-mapper/mptest/lib/failpath_sdev_offline
new file mode 100755
index 0000000..1a185b2
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/failpath_sdev_offline
@@ -0,0 +1,46 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+stopfile=stop.failpath_sdev_offline
+
+start_failpath_sdev_offline () {
+ [ -z "$MPNAME" ] && exit 1
+ local d
+ local m
+ local devs=$(mpath_all_paths)
+ local majs=$(for d in $devs; do cat /sys/block/$d/dev; done)
+
+ rm -f $stopfile
+ while [ ! -f $stopfile ]; do
+ for d in $devs; do
+ echo offline > /sys/block/${d}/device/state
+ done
+ for d in $devs; do
+ echo running > /sys/block/${d}/device/state
+ done
+ for m in $majs; do
+ dmsetup message $MPNAME 0 "reinstate_path $m"
+ done
+ done &
+}
+
+stop_failpath_sdev_offline ()
+{
+ touch $stopfile
+ wait
+}
diff --git a/Documentation/device-mapper/mptest/lib/fio_validate b/Documentation/device-mapper/mptest/lib/fio_validate
new file mode 100755
index 0000000..9a79034
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/fio_validate
@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+if [ -z "${FIO_VALIDATE_OPT}" ]; then
+ FIO_VALIDATE_OPT="--time_based --runtime=300 --size=100G"
+fi
+
+run_fio_validate ()
+{
+ if [ -z "$MPNAME" ] || [ ! -b "/dev/mapper/$MPNAME" ]; then
+ echo "FAILED TO START"
+ return 1
+ fi
+
+ fio --bs=512k --rw=randwrite --direct=1 --iodepth=2 --ioengine=libaio \
+ --filename=/dev/mapper/$MPNAME ${FIO_VALIDATE_OPT} \
+ --do_verify=1 --verify=meta --verify_dump=1 --verify_fatal=1 \
+ --name=test1
+ if [ $? -ne 0 ]; then
+ echo "FAILED"
+ return 1
+ else
+ echo "SUCCESS"
+ return 0
+ fi
+}
diff --git a/Documentation/device-mapper/mptest/lib/mpath_generic b/Documentation/device-mapper/mptest/lib/mpath_generic
new file mode 100755
index 0000000..c67fd5d
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/mpath_generic
@@ -0,0 +1,119 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+if [ -z "$MPNAME" ]; then
+ echo "MPNAME should be defined"
+ exit 1
+fi
+if dmsetup info $MPNAME >&/dev/null; then
+ echo "dm device $MPNAME already exists"
+ exit 1
+fi
+
+mpath_all_paths ()
+{
+ backend_all_paths
+}
+
+mpath_all_hosts ()
+{
+ backend_all_hosts
+}
+
+mpath_table ()
+{
+ # dm-mpath parameters
+ local _feature="2 queue_if_no_path retain_attached_hw_handler"
+ local _hwhandler="0"
+ local _initialpg="1"
+ local _selector="queue-length 0"
+ #
+ local str=
+ local _pgs=0
+ #
+ local _paths=0
+ local pgstr=
+ # group by 2-paths
+ for d in $(mpath_all_paths); do
+ local sz=$(blockdev --getsz /dev/$d)
+ if [ -z "$sz" ] || [ "$sz" = "0" ]; then
+ continue
+ fi
+ size=$sz
+ pgstr="$pgstr /dev/${d} 1"
+ _paths=$((_paths + 1))
+ if [ ${_paths} -eq 2 ]; then
+ str="$str ${_selector} ${_paths} 1 $pgstr"
+ pgstr=
+ _paths=0
+ _pgs=$((_pgs + 1))
+ fi
+ done
+ if [ ${_paths} -gt 0 ]; then
+ str="$str ${_selector} ${_paths} 1 $pgstr"
+ pgstr=
+ _paths=0
+ _pgs=$((_pgs + 1))
+ fi
+ if [ ${_pgs} -eq 0 ]; then
+ _initialpg=0
+ fi
+
+ echo "0 $size multipath ${_feature} ${_hwhandler} ${_pgs} ${_initialpg} ${str}"
+}
+
+create_mpath ()
+{
+ # avoid interference with multipathd
+ service multipathd stop
+
+ #
+ # Create multipath backend
+ #
+ backend_create_device
+ # ...wait for sdev become visible
+ sleep 1
+
+ #
+ # Create DM device
+ #
+ local table="$(mpath_table)"
+ echo "Initial table: $table"
+ dmsetup create $MPNAME --table "$table" || exit 1
+ # ...wait for mpdev become visible and udev activities settle
+ sleep 3
+}
+
+delete_mpath ()
+{
+ # ...wait for any processes touching mpdev to finish
+ sleep 3
+
+ # Remove mpath device
+ size=$(dmsetup status $MPNAME | awk '{print $2}')
+ echo "0 $size error" | dmsetup load $MPNAME && \
+ dmsetup suspend --nolockfs --noflush $MPNAME && \
+ dmsetup resume $MPNAME
+ #udevadm settle
+ dmsetup remove $MPNAME
+
+ # ...wait for any processes touching sdev to finish
+ sleep 1
+ backend_delete_device
+}
+
diff --git a/Documentation/device-mapper/mptest/lib/switchpg_dm_message b/Documentation/device-mapper/mptest/lib/switchpg_dm_message
new file mode 100755
index 0000000..e53808a
--- /dev/null
+++ b/Documentation/device-mapper/mptest/lib/switchpg_dm_message
@@ -0,0 +1,37 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+stopfile=stop.switchpg_dm_message
+
+start_switchpg_dm_message () {
+ [ -z "$MPNAME" ] && exit 1
+
+ rm -f $stopfile
+ while [ ! -f $stopfile ]; do
+ dmsetup message $MPNAME 0 "disable_group 1"
+ sleep 1
+ dmsetup message $MPNAME 0 "enable_group 1"
+ sleep 1
+ done &
+}
+
+stop_switchpg_dm_message ()
+{
+ touch $stopfile
+ wait
+}
diff --git a/Documentation/device-mapper/mptest/runtest b/Documentation/device-mapper/mptest/runtest
new file mode 100755
index 0000000..114184a
--- /dev/null
+++ b/Documentation/device-mapper/mptest/runtest
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+export MPNAME="mp"
+export LIB=./lib
+
+# Select backend device type
+export MULTIPATH_BACKEND_MODULE="tcmloop"
+#export MULTIPATH_BACKEND_MODULE="scsidebug"
+
+# Uncomment this if you want shorter test
+#export FIO_VALIDATE_OPT="--time_based --runtime=30 --size=10G"
+
+TESTS="./tests/*"
+if [ "$*" ]; then
+ TESTS=$*
+fi
+
+PASSED=
+FAILED=
+for t in $TESTS; do
+ echo "** Running: $t"
+ $t
+ if [ $? -eq 0 ]; then
+ PASSED="$PASSED $(basename $t)"
+ else
+ FAILED="$FAILED $(basename $t)"
+ fi
+done
+
+echo "** summary **"
+echo "PASSED: $PASSED"
+echo "FAILED: $FAILED"
diff --git a/Documentation/device-mapper/mptest/tests/test_00_no_failure b/Documentation/device-mapper/mptest/tests/test_00_no_failure
new file mode 100755
index 0000000..3324bf6
--- /dev/null
+++ b/Documentation/device-mapper/mptest/tests/test_00_no_failure
@@ -0,0 +1,30 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+. ${LIB}/backend_generic
+. ${LIB}/mpath_generic
+. ${LIB}/fio_validate
+
+create_mpath
+
+run_fio_validate
+ret=$?
+
+delete_mpath
+
+exit $ret
diff --git a/Documentation/device-mapper/mptest/tests/test_01_sdev_offline b/Documentation/device-mapper/mptest/tests/test_01_sdev_offline
new file mode 100755
index 0000000..33291e2
--- /dev/null
+++ b/Documentation/device-mapper/mptest/tests/test_01_sdev_offline
@@ -0,0 +1,33 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+. ${LIB}/backend_generic
+. ${LIB}/mpath_generic
+. ${LIB}/failpath_sdev_offline
+. ${LIB}/fio_validate
+
+create_mpath
+start_failpath_sdev_offline
+
+run_fio_validate
+ret=$?
+
+stop_failpath_sdev_offline
+delete_mpath
+
+exit $ret
diff --git a/Documentation/device-mapper/mptest/tests/test_02_sdev_delete b/Documentation/device-mapper/mptest/tests/test_02_sdev_delete
new file mode 100755
index 0000000..44d0ff8
--- /dev/null
+++ b/Documentation/device-mapper/mptest/tests/test_02_sdev_delete
@@ -0,0 +1,33 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+. ${LIB}/backend_generic
+. ${LIB}/mpath_generic
+. ${LIB}/failpath_sdev_delete
+. ${LIB}/fio_validate
+
+create_mpath
+start_failpath_sdev_delete
+
+run_fio_validate
+ret=$?
+
+stop_failpath_sdev_delete
+delete_mpath
+
+exit $ret
diff --git a/Documentation/device-mapper/mptest/tests/test_03_dm_failpath b/Documentation/device-mapper/mptest/tests/test_03_dm_failpath
new file mode 100755
index 0000000..f8938fb
--- /dev/null
+++ b/Documentation/device-mapper/mptest/tests/test_03_dm_failpath
@@ -0,0 +1,33 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+. ${LIB}/backend_generic
+. ${LIB}/mpath_generic
+. ${LIB}/failpath_dm_message
+. ${LIB}/fio_validate
+
+create_mpath
+start_failpath_dm_message
+
+run_fio_validate
+ret=$?
+
+stop_failpath_dm_message
+delete_mpath
+
+exit $ret
diff --git a/Documentation/device-mapper/mptest/tests/test_04_dm_switchpg b/Documentation/device-mapper/mptest/tests/test_04_dm_switchpg
new file mode 100755
index 0000000..4086e28
--- /dev/null
+++ b/Documentation/device-mapper/mptest/tests/test_04_dm_switchpg
@@ -0,0 +1,33 @@
+#!/bin/bash
+#
+# Copyright (C) 2015 NEC Corporation. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+. ${LIB}/backend_generic
+. ${LIB}/mpath_generic
+. ${LIB}/switchpg_dm_message
+. ${LIB}/fio_validate
+
+create_mpath
+start_switchpg_dm_message
+
+run_fio_validate
+ret=$?
+
+stop_switchpg_dm_message
+delete_mpath
+
+exit $ret
--
2.1.0
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