diff --git a/gating.yaml b/gating.yaml
new file mode 100644
index 0000000..648918d
--- /dev/null
+++ b/gating.yaml
@@ -0,0 +1,6 @@
+--- !Policy
+product_versions:
+  - rhel-9
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}
diff --git a/tests/md_raid_module/LICENSE b/tests/md_raid_module/LICENSE
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/tests/md_raid_module/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/tests/md_raid_module/Makefile b/tests/md_raid_module/Makefile
new file mode 100644
index 0000000..0089db5
--- /dev/null
+++ b/tests/md_raid_module/Makefile
@@ -0,0 +1,60 @@
+# Copyright (c) 2006 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.
+#
+# This program is distributed in the hope that it will 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 to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# Author:guazhang <guazhang@redhat.com>
+
+# The toplevel namespace within which the test lives.
+
+# Version of the Test. Used with make tag.
+export TESTVERSION=1.0
+
+# A phony target is one that is not really the name of a file.
+# It is just a name for some commands to be executed when you
+# make an explicit request. There are two reasons to use a
+# phony target: to avoid a conflict with a file of the same
+# name, and to improve performance.
+.PHONY: all install download clean
+
+# executables to be built should be added here, 
+# they will be generated on the system under test.
+BUILT_FILES=
+
+# data files, .c files, scripts anything needed to either compile the test 
+# and/or run it.
+FILES=$(METADATA) tc.sh LICENSE  main.sh  Makefile  PURPOSE
+
+run: $(FILES) build
+	./main.sh
+
+build: $(BUILT_FILES)
+#	sudo chmod a+x main.sh
+
+clean:
+	rm -f *~ *.rpm $(BUILT_FILES)
+
+# You may need to add other targets e.g. to build executables from source code
+# Add them here:
+
+
+# Include Common Makefile
+
+# Generate the testinfo.desc here:
+$(METADATA): Makefile
+	@touch $(METADATA)
+# Change to the test owner's name
+	@echo "Owner:        guazhang <guazhang@redhat.com>" > $(METADATA)
+	@echo "Name:         $(TEST)" >> $(METADATA)
+	@echo "Path:         $(TEST_DIR)"       >> $(METADATA)
+	@echo "License:      GPLv3" >> $(METADATA)
+	@echo "TestVersion:  $(TESTVERSION)"    >> $(METADATA)
+	@echo "Description:  remove raid module">> $(METADATA)
diff --git a/tests/md_raid_module/PURPOSE b/tests/md_raid_module/PURPOSE
new file mode 100644
index 0000000..24752c5
--- /dev/null
+++ b/tests/md_raid_module/PURPOSE
@@ -0,0 +1,7 @@
+modprobe raid module
+modprobe -r raid module
+
+modprobe raid0 raid1 raid10 raid456
+modprobe -r  raid0 raid1 raid10 raid456
+
+
diff --git a/tests/md_raid_module/include.sh b/tests/md_raid_module/include.sh
new file mode 100755
index 0000000..97b4b00
--- /dev/null
+++ b/tests/md_raid_module/include.sh
@@ -0,0 +1,621 @@
+#!/bin/bash
+
+# Copyright (c) 2016 Red Hat, Inc. All rights reserved.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Author: guazhang   <guazhang@redhat.com>
+
+source tc.sh || exit 1
+
+rpm -q mdadm || yum install -y mdadm
+JOURNAL_SUPPORT=0
+info=`mdadm --create --help | grep -o "write-journal"`
+if [ "$info" = "write-journal" ]; then
+        JOURNAL_SUPPORT=1
+fi
+
+#Install fio from upstream
+function install_fio() {
+
+	git_url=git://git.kernel.org/pub/scm/linux/kernel/git/axboe/fio.git
+
+	tok yum install libaio-devel zlib-devel -y
+	tok git clone $git_url
+	tlog "INFO: Installing Fio"
+	tok "cd fio  &&./configure && make && make install"
+	tok which fio
+	if [ $? -ne 0 ]; then
+		tlog "FAIL: Fio not succesffully installed"
+		exit 1
+	fi
+
+	tlog "INFO: Fio succesfully installed"
+}
+
+#Install dt
+function install_dt () { 
+
+	wget http://www.scsifaq.org/RMiller_Tools/ftp/dt/dt-source.tar.gz
+	tar xvf dt-source.tar.gz
+	cd dt.d-WIP/
+	cp -p Makefile.linux Makefile
+	make
+	cp dt /usr/bin
+}
+
+#----------------------------------------------------------------------------#
+# MD_Create_RAID ()
+# Usage:
+#   Create md raid.
+# Parameter:
+# 	$level				# like 0, 1, 3, 5, 10, 50                       
+# 	$dev_list			# like 'sda sdb sdc sdd'
+# 	$raid_dev_num		# like 3                       
+# 	$spar_dev_num		# like 2                                    
+# 	$chunk				# like 64                                     
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR		# $md_raid like '/dev/md0'
+#		MD_DEVS			# $raid_dev_list like '/dev/sda /dev/sdb'
+#----------------------------------------------------------------------------#
+
+function MD_Create_RAID (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -lt 3 ]; then
+		echo 'Usage: MD_Create_RAID $level $dev_list $raid_dev_num \
+		[$spar_dev_num] [$chunk]'
+		exit "${EX_USAGE}"
+	fi
+	# variable definitions
+	RETURN_STR=''
+	MD_DEVS=''
+	local level=$1
+	local dev_list=$2
+	local raid_dev_num=$3
+	local bitmap=$4
+	local spar_dev_num=${5:-0}
+	local chunk=${6:-512}
+	local bitmap_chunksize=${7:-64M}
+	local dev_num=0
+	local raid_dev=''
+	local spar_dev=''
+	local md_raid=""
+	local mtdata=${8:-1.2}
+	local ret=0
+	# start to create
+	echo "INFO: Executing MD_Create_RAID() to create raid $level"
+	# check if the given disks are more the needed
+	for i in $dev_list; do
+		dev_num=$((dev_num+1))
+	done
+	if [ $dev_num -lt $(($raid_dev_num+$spar_dev_num)) ]; then
+		echo "FAIL: Required devices are more than given."
+		exit 1
+	fi
+	# get free md device name, only scan /dev/md[0-15].
+	for i in `seq 1 30`; do
+		ls -l /dev/md$i > /dev/null 2>&1
+		if [ $? -ne 0 ]; then
+			md_raid=/dev/md$i
+			break
+		fi
+	done
+	# get raid disk list.
+	for i in `seq 1 $raid_dev_num`; do
+		tmp_dev=`echo $dev_list | cut -d " " -f $i`
+		raid_dev="$raid_dev /dev/$tmp_dev"
+	done
+	echo "INFO: Created md raid with these raid devices \"$raid_dev\"."
+	# get spare disk list.
+	if [ $spar_dev_num -ne 0 ]; then
+		for i in `seq $((raid_dev_num+1)) $((raid_dev_num+spar_dev_num))`; do
+			tmp_dev=`echo $dev_list | cut -d " " -f $i`
+			spar_dev="$spar_dev /dev/$tmp_dev"
+		done
+		echo "INFO: Created md raid with these spare disks \"$spar_dev\"."
+	fi
+	sleep 5
+	# create md raid
+	if [ $bitmap -eq 1 ]; then
+		if [ $spar_dev_num -ne 0 ]; then
+			mdadm --create --run $md_raid --level $level --metadata $mtdata \
+			--raid-devices $raid_dev_num $raid_dev \
+			--spare-devices $spar_dev_num $spar_dev --chunk $chunk --bitmap=internal --bitmap-chunk=$bitmap_chunksize
+		else
+			mdadm --create --run $md_raid --level $level --metadata $mtdata \
+			--raid-devices $raid_dev_num $raid_dev --chunk $chunk --bitmap=internal --bitmap-chunk=$bitmap_chunksize
+		fi
+	
+	elif [ $bitmap -eq 2 ];then
+		touch /home/bitmap_md_$level
+	 	echo "INFO:bitmap backup in /home/bitmap_md_$level"
+		bitmap_dir="/home/bitmap_md_$level"
+		if [ $spar_dev_num -ne 0 ]; then
+                        mdadm --create --run $md_raid --level $level --metadata $mtdata \
+                        --raid-devices $raid_dev_num $raid_dev \
+                        --spare-devices $spar_dev_num $spar_dev --chunk $chunk --bitmap=$bitmap_dir --force  --bitmap-chunk=$bitmap_chunksize
+                else
+                        mdadm --create --run $md_raid --level $level --metadata $mtdata \
+                        --raid-devices $raid_dev_num $raid_dev --chunk $chunk --bitmap=$bitmap_dir --force --bitmap-chunk=$bitmap_chunksize
+                fi
+	
+
+	
+	else
+		if [ $spar_dev_num -ne 0 ]; then
+			mdadm --create --run $md_raid --level $level --metadata $mtdata \
+			--raid-devices $raid_dev_num $raid_dev \
+			--spare-devices $spar_dev_num $spar_dev --chunk $chunk
+		else
+			mdadm --create --run $md_raid --level $level --metadata $mtdata \
+			--raid-devices $raid_dev_num $raid_dev --chunk $chunk
+		fi	
+	fi
+	if [ $? -ne 0 ]; then
+		ret=$?
+		echo "INFO:create $md_raid failed.will remove all raid disk "
+		exit 1
+
+	fi
+	echo "create `date +%s` mdadm -CR $md_raid -l $level -e $mtdata -n $raid_dev_num \"$raid_dev\"  -x=$spar_dev_num $spar_dev bitmap=$bitmap --chunk $chunk --bitmap-chunk=$bitmap_chunksize"
+	echo "INFO:cat /proc/mdstat######################"
+	cat /proc/mdstat
+	lsblk
+	trun "ls /dev/md* |egrep md[0-9]+"
+	echo "INFO:mdadm -D $md_raid #########################"
+	mdadm --detail $md_raid
+	# define global variables
+	MD_DEVS="$raid_dev $spar_dev"
+	RETURN_STR="$md_raid"	
+	return $ret
+}
+####################### End of functoin MD_Create_RAID
+
+#----------------------------------------------------------------------------#
+# MD_Create_RAID_Journal ()
+# Usage:
+#   Create md raid with journal.
+# Parameter:
+# 	$level				# like 4, 5, 6
+# 	$dev_list			# like 'sda sdb sdc sdd'
+# 	$raid_dev_num		# like 3
+# 	$spar_dev_num		# like 2
+# 	$chunk				# like 64
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR		# $md_raid like '/dev/md0'
+#		MD_DEVS			# $raid_dev_list like '/dev/sda /dev/sdb'
+#----------------------------------------------------------------------------#
+
+function MD_Create_RAID_Journal (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -lt 3 ]; then
+		echo 'Usage: MD_Create_RAID_Journal $level $dev_list $raid_dev_num \
+		[$spar_dev_num] [$chunk]'
+		exit "${EX_USAGE}"
+	fi
+	# variable definitions
+	RETURN_STR=''
+	MD_DEVS=''
+	local level=$1
+	local dev_list=$2
+	local raid_dev_num=$3
+	local bitmap=$4
+	local spar_dev_num=${5:-0}
+	local chunk=${6:-512}
+	local bitmap_chunksize=${7:-64M}
+	local mtdata=${8:-1.2}
+	local dev_num=0
+	local raid_dev=''
+	local spar_dev=''
+	local md_raid=""
+	local ret=0
+	# start to create
+	echo "INFO: Executing MD_Create_RAID_Journal() to create raid $level"
+	# check if the given disks are more the needed
+	for i in $dev_list; do
+		dev_num=$((dev_num+1))
+	done
+	if [ $dev_num -lt $(($raid_dev_num+$spar_dev_num)) ]; then
+		echo "FAIL: Required devices are more than given."
+		exit 1
+	fi
+	# get free md device name, only scan /dev/md[0-15].
+	for i in `seq 0 15`; do
+		ls -l /dev/md$i > /dev/null 2>&1
+		if [ $? -ne 0 ]; then
+			md_raid=/dev/md$i
+			break
+		fi
+	done
+	# take the first disk as journal disk
+	tmp_dev=`echo $dev_list | cut -d " " -f 1`
+	journal_dev="/dev/$tmp_dev"
+	echo "INFO: Created md raid with write journal disk \"$journal_dev\"."
+
+	# get raid disk list.
+	for i in `seq 2 $raid_dev_num`; do
+		tmp_dev=`echo $dev_list | cut -d " " -f $i`
+		raid_dev="$raid_dev /dev/$tmp_dev"
+	done
+	echo "INFO: Created md raid with these raid devices \"$raid_dev\"."
+
+	# get spare disk list.
+	if [ $spar_dev_num -ne 0 ]; then
+		for i in `seq $((raid_dev_num+1)) $((raid_dev_num+spar_dev_num))`; do
+			tmp_dev=`echo $dev_list | cut -d " " -f $i`
+			spar_dev="$spar_dev /dev/$tmp_dev"
+		done
+		echo "INFO: Created md raid with these spare disks \"$spar_dev\"."
+	fi
+
+	#There is one write journal disk, so change the raid_dev_num--
+	((raid_dev_num--))
+
+	# create md raid
+	# prepare the parameter
+	BITMAP=""
+	SPAR_DEV=""
+	if [ $bitmap -eq 1 ]; then
+		BITMAP="--bitmap=internal --bitmap-chunk=$bitmap_chunksize"
+	fi
+	if [ $spar_dev_num -ne 0 ]; then
+		SPAR_DEV="--spare-devices $spar_dev_num $spar_dev"
+	fi
+	if [ -n "$journal_dev" ]; then
+		WRITE_JOURNAL="--write-journal $journal_dev"
+	fi
+	tok "mdadm --create --run $md_raid --level $level --metadata $mtdata --raid-devices $raid_dev_num $raid_dev $WRITE_JOURNAL $SPAR_DEV $BITMAP --chunk $chunk"
+	ret=$?
+	echo "create raid time `date +%s` mdadm -CR $md_raid --level $level --metadata $mtdata --raid-devices $raid_dev_num $raid_dev $WRITE_JOURNAL $SPAR_DEV $BITMAP --chunk $chunk "
+	cat /proc/mdstat
+	mdadm --detail $md_raid
+	# define global variables
+	MD_DEVS="$journal_dev $raid_dev $spar_dev"
+	RETURN_STR="$md_raid"
+	return $ret
+}
+####################### End of functoin MD_Create_RAID_Journal
+
+#----------------------------------------------------------------------------#
+# MD_Save_RAID ()
+# Usage:
+#   Save md raid configuration.
+# Parameter:
+# 	NULL
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       NULL
+#----------------------------------------------------------------------------#
+
+function MD_Save_RAID (){
+    echo "INFO: Executing MD_Save_RAID()"                    
+    echo "DEVICE $MD_DEVS" > /etc/mdadm.conf
+	if [ $? -ne 0 ]; then
+		echo "FAIL: Failed to save md device info to /etc/mdadm.conf"
+	fi
+	mdadm --detail --scan >> /etc/mdadm.conf
+	if [ $? -ne 0 ]; then
+		echo "FAIL: Failed to save md state info to /etc/mdadm.conf"
+	fi
+	return 0
+}
+####################### End of functoin MD_Save_RAID
+
+#----------------------------------------------------------------------------#
+# MD_Clean_RAID ()
+# Usage:
+#	Clean md raid.
+# Parameter:
+#   $md_name		# like '/dev/md0'
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       NULL
+#----------------------------------------------------------------------------#
+
+function MD_Clean_RAID (){
+    EX_USAGE=64 # Bad arg format                                                
+    if [ $# -ne 1 ]; then                                                       
+        echo 'Usage: MD_Clean_RAID $md_name'                                               
+        exit "${EX_USAGE}"                                                      
+    fi 
+    echo "INFO: Executing MD_Clean_RAID() against this md device: $md_name"
+	local md_name=$1	
+	echo "mdadm --stop $md_name"
+	mdadm --stop $md_name
+	st=$?
+	while [ $st -ne 0 ]; do
+		echo "INFO:mdadm stop failed"	
+		sleep 10
+		rm -rf /etc/mdadm.conf
+		for i in $(cat /proc/mdstat |grep "inactive" |awk '{print $1}') ;do
+			mdadm --stop "/dev/$i"
+		done
+	mdadm --stop $md_name
+	st=$?
+		
+	done
+	sleep 10	
+	echo "clean devs : $MD_DEVS"
+	for dev in $MD_DEVS; do
+		echo "mdadm --zero-superblock $dev"
+		`mdadm --zero-superblock $dev` 
+	done
+	#`mdadm --zero-superblock "$MD_DEVS"` 
+	echo "ret is $?"
+	rm -rf /etc/mdadm.conf
+	sleep 10
+	echo "ls $md_name"
+        tnot "ls $md_name"
+        if [ $? = 1 ];then
+                tlog "mdadm --stop command can't delete md node name $md_name in /dev node"
+		trun "ls /dev/md*"
+		trun "cat /proc/mdstat"
+        else
+        	tlog "mdadm --stop can delete md node name $md_name in /dev"
+#        	rm -rf $md_name
+        fi
+	return 0
+}
+####################### End of functoin MD_Clean_RAID
+
+#----------------------------------------------------------------------------#
+# MD_Get_State_RAID ()
+# Usage:
+#   get md raid status
+# Parameter:
+#   $md_name		# like "/dev/md0"
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR  # $state, like 'clean, resyncing'
+#----------------------------------------------------------------------------#
+
+function MD_Get_State_RAID (){
+    EX_USAGE=64 # Bad arg format
+    if [ $# -lt 1 ]; then
+        echo 'Usage: MD_Get_State_RAID $md_name'
+        exit "${EX_USAGE}"
+    fi
+
+    RETURN_STR=''
+	local md_name=$1
+	local state=''
+	local start_times=0
+	local end_times=0
+	local spend_times=0
+#    	echo "INFO: Executing MD_Get_State_RAID() against this md array: $md_name"
+	start_times=$(date +%s)
+	echo " $start_times start_time against this md array: $md_name "
+#	echo "mdadm --detail $md_name | grep "State :" | cut -d ":" -f 2 | cut -d " " -f 2"
+	state=`mdadm --detail $md_name | grep "State :" | cut -d ":" -f 2 | cut -d " " -f 2`
+	sta=$?
+	if [ -z "$state" ]; then
+		echo "`date +%s`  first_time_failed get raid statu #############################+++++++++++++++++++++++++"
+		while [ $sta ];do
+			state=`mdadm --detail $md_name | grep "State :" | cut -d ":" -f 2 | cut -d " " -f 2`
+			sta=$?
+			end_times=$(date +%s)
+			spend_times=$((end_times - start_times))
+				if [[ $spend_times -gt 10  ]];then
+					echo "get raid status spend $spend_times and exit  "
+					ls /dev/md* |egrep md[0-9]+
+					cat /proc/mdstat
+					exit 1
+				fi
+		done
+		
+		echo "$spend_times spend raid statu_time #############################"	
+	fi
+	echo "state is $state"
+    RETURN_STR="$state"
+    return 0
+}
+####################### End of functoin MD_Get_State_RAID
+
+
+#----------------------------------------------------------------------------#
+# MD_IO_Test ()
+# Usage:
+#   IO test using dt against block level
+# Parameter:
+#   $dt_target		# like "/dev/md0"
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#		NULL
+#----------------------------------------------------------------------------#
+
+function MD_IO_Test (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -lt 1 ]; then
+	    echo 'Usage: MD_IO_Test $dt_target'
+	    exit "${EX_USAGE}"
+	fi
+	# this parameter should be change to 7200 during a real testing cycle                                                        
+	local dt_runtime=72
+	local dt_logfile=""                            
+	test -f /tmp/dt_XXXXXXXX.log || `mktemp /tmp/dt_XXXXXXXX.log`
+    	dt_logfile="/tmp/dt_XXXXXXXX.log"
+	local dt_target=$1                                                          
+	echo -n "INFO: dt against ${dt_target} is running with "                    
+	echo "runtime: ${dt_runtime}s, log file is: ${dt_logfile}" 
+	echo "dt  slices=16 disable=eof,pstats flags=direct \
+    	oncerr=abort min=b max=256k \
+    	pattern=iot iodir=reverse prefix='%d@%h (pid %p)' \
+    	of=${dt_target} log=${dt_logfile} \                    
+        runtime=${dt_runtime}"                                                   
+	`dt  slices=16 disable=eof,pstats flags=direct \
+    	oncerr=abort min=b max=256k \
+    	pattern=iot iodir=reverse prefix='%d@%h (pid %p)' \
+    	of=${dt_target} log=${dt_logfile} \
+        runtime=${dt_runtime}`                                                 
+	if [ $? -ne 0 ]; then
+		echo "FAIL: Failed to run dt testing against $dt_target"
+		exit 1
+	fi
+    return 0
+}
+####################### End of functoin MD_IO_Test
+
+function create_loop_devices (){
+    Create_Loop_Devices $@
+}
+
+# ---------------------------------------------------------#
+# Create_Loop_Devices ()
+# Usage:
+#   Create loop devices. We will find out the free number
+#   of loop to bind on tmp file.
+# Parameter:
+#   $count      #like "12"
+#   $size_mib   #like "1024"
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR like 'loop9 loop10'
+# ---------------------------------------------------------#
+
+function Create_Loop_Devices (){
+    EX_USAGE=64 # Bad arg format
+    if [ $# -ne 2 ]; then
+        echo 'Usage: Create_Loop_Devices $count $size_mib'
+        exit "${EX_USAGE}"
+    fi
+    RETURN_STR=''
+    local count="$1"
+    local size_mib="$2"
+    local loop_dev_list=''
+    for X in `seq 1 ${count}`;do
+        local loop_file_name=$(mktemp /tmp/loop.XXXXXX)
+	     dd if=/dev/zero of=${loop_file_name} count=$size_mib  bs=1M 1>/dev/null 2>&1
+        local loop_dev_name=$(losetup -f)
+#BUG: RHEL5 only support 8 loop device and we need to check whether we are run out of it
+        local command="losetup ${loop_dev_name} ${loop_file_name} 1>/dev/null 2>&1"
+        eval "${command}"
+        if [ $? -eq 0 ];then
+            loop_dev_list="${loop_dev_list}${loop_dev_name} "
+        else
+            echo "FAIL: Failed to create loop devices with command: ${command}"
+            return 1
+        fi
+    done
+    loop_dev_list=$(echo "${loop_dev_list}" | sed -e 's/ $//')
+    echo "${loop_dev_list}" #Back capability
+    loop_dev_list=$(echo "${loop_dev_list}" | sed -e 's/\/dev\///g')
+    RETURN_STR="${loop_dev_list}"
+    return 0
+}
+
+function get_disks() {
+
+	disk_num=$1
+	disk_size=$2
+
+	LOOP_DEVICE_LIST=$(create_loop_devices $disk_num $disk_size)
+	for i in $(seq 1 $disk_num); do
+	   	disk_temp=$(echo $LOOP_DEVICE_LIST | cut -d " " -f $i)
+   		disk_temp=$(echo $disk_temp | cut -d "/" -f 3)
+   		devlist="$devlist $disk_temp"
+	done
+	
+	RETURN_STR="$devlist"
+}
+
+function remove_disks() {
+
+	disks=$1			  
+	for disk in $disks; do
+		try_num=1
+		disk="/dev/"$disk
+		echo "losetup -d $disk"
+		losetup -d $disk
+		state=$?
+		while [ $state -ne 0 ]; do
+			if [ $try_num -eq 4 ]; then
+				echo "FAIL: After tried 3 times losetup -d $disk"
+				return 1
+			fi
+			sleep 1
+			losetup -d $disk
+			state=$?
+			((try_num++))
+                done
+
+	done
+	rm -rf /tmp/loop.*
+	
+}
+
+
+local_clean(){
+		local md_name=""
+                (mdadm -E /dev/sd[b-i]1 |grep "raid") || (cat /proc/mdstat |grep "inactive") || (ls /dev/md* |egrep md[0-9]+)
+                if [ $? = 0 ];then
+                                echo "have some md don't clean"
+				ls /dev/md* |egrep md[0-9]+
+				for md_name in "$(ls /dev/md* |egrep md[0-9]+)" ;do
+					trun "mdadm --stop $md_name"
+					sleep 5
+					tlog "$md_name have stop"
+				done
+				rm -rf  /etc/mdadm.conf 
+				trun "mdadm -Ss";sleep 5
+                                trun "mdadm  --zero-superblock  /dev/sd[b-i]1"
+                            	trun "mdadm  --zero-superblock /dev/sd[b-i]"
+                                trun "cat /proc/mdstat"
+               			lsblk 
+fi		
+		echo "INFO:need to remove partition first"
+		for i in b c d e f g h i ;do
+			mdadm  --zero-superblock "/dev/sd$i"
+			sleep 1
+			gdisk /dev/sd$i  &> /dev/null  <<EOF
+d
+3
+d
+2
+d
+1
+w
+Y
+EOF
+			sleep 1
+			partprobe /dev/sd$i 
+		done
+
+		tlog "have been remove all partition,check it"
+		lsblk;cat /proc/mdstat; ls /dev/md*
+
+}
+
diff --git a/tests/md_raid_module/main.sh b/tests/md_raid_module/main.sh
new file mode 100755
index 0000000..f2e508d
--- /dev/null
+++ b/tests/md_raid_module/main.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+###this case just  test raid modeule exit
+source include.sh || exit 200
+
+uname -a
+
+for i in 0 1 456 10 ;do
+        tok "modprobe raid$i "
+
+        tok "lsmod |grep raid$i "
+        if [ $? = 0 ];then
+                echo "have insert raid0 to OS"
+                        tok "modprobe -r raid$i"
+                        sleep 5
+                        tok "modprobe raid$i "
+                        sleep 5
+                        tok "modprobe -r raid$i"
+                        sleep 5
+                        tok "modprobe raid$i"
+                        sleep 5
+        else
+                echo "have no inset this module"
+                         tok "modprobe raid$i"
+                         sleep 5
+                         tok "modprobe -r raid$i"
+                         sleep 5
+                         tok "modprobe raid$i"
+                         sleep 5
+                         tok "modprobe -r raid$i"
+
+        fi
+
+
+done
+
+tend
+
+
+
diff --git a/tests/md_raid_module/tc.sh b/tests/md_raid_module/tc.sh
new file mode 100755
index 0000000..ba10f34
--- /dev/null
+++ b/tests/md_raid_module/tc.sh
@@ -0,0 +1,266 @@
+#!/bin/bash
+
+# Copyright (c) 2016 Red Hat, Inc. All rights reserved.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#test x$LXT_TC = x || return
+#LXT_TC=1
+
+#
+# print the current date
+# usage: d=$(tdate)
+#
+tdate () 
+{
+    date '+%T' 2>/dev/null
+}
+
+#
+# print the log information
+# usage: tlog "hello world" "WARNING"
+#
+tlog ()
+{
+    local msg=$1
+    local log_level=${2:-INFO}
+    local cur_date=$(tdate)
+
+    echo "[$log_level][$cur_date]$msg"
+    
+    return 0
+}
+
+#
+# run the cmd and format the log. return the exitint status of cmd
+# use the global variables: tSTDOUT and tSTDERR to return the stdout and stderr
+# usage: trun "ls"
+#        trun "ls"; echo $?
+#        stdout=$tSTDOUT
+#        stderr=$tSTDERR
+#
+trun ()
+{
+    local cmd="$*"
+    
+    _trun_ "$cmd"
+}
+
+#
+# verify the execution of command
+# if the cmd return 0, mark this checkpoint failed and return 1
+# if not, mark it passed and return 0
+# usage: tnot "ls /not_existing"
+#
+tnot () {
+    local cmd="$*"
+    _trun_ "$cmd" 1
+    if test $? -eq 0; then 
+        tfail_ "$cmd" ;
+    else
+        tpass_ "$cmd" ;
+    fi 
+}
+
+#
+# verify the execution of command
+# if the cmd return 0, mark this checkpoint passed and return 0
+# if not, mark it failed and return 1
+# usage: tok "ls /"
+#
+tok ()
+{
+    local cmd="$*"
+    _trun_ "$cmd" 0
+    if test $? -eq 0; then 
+        tpass_ "$cmd" ;
+    else
+        tfail_ "$cmd" ;
+    fi 
+}
+
+#
+# verify the execution of command
+# if the cmd return 0, mark this checkpoint passed and return 0
+# if not, mark it failes and exit
+# usage: terr "ls"
+#
+#terr ()
+#{
+#    tok "$*" || tend
+#}
+
+#
+# verify the execution of command
+# if the cmd return 0, will continue to run the script
+# if not, mark it failes and exit
+# usage: terr "ls"
+#
+terr ()
+{
+    local cmd="$*"
+    _trun_ "$cmd" 0
+    if test $? -ne 0; then 
+        tfail_ "$cmd" ;
+        tend ;
+    fi 
+}
+
+#
+# exit the program and print the log message
+# usage: texit "error message" 100
+# similar to the exception 
+#
+texit ()
+{
+    msg=$1
+    err=$2
+    is_null $err && err=1
+    test $err -lt 1 || err=1 
+
+    tlog "$msg" "ERROR"
+    exit $2 
+}
+
+#
+# print the test report, cleanup the testing bed and  close the testing. 
+# usage: tend
+#
+tend ()
+{
+    local pcount=$(wc -l $tPASS_FILE | awk '{print $1}')
+    local fcount=$(wc -l $tFAIL_FILE | awk '{print $1}')
+    local total=$(( $pcount + $fcount ))
+
+    echo "#################################Test Report###############################"
+    echo "TOTAL   : $total" 
+    echo "PASSED  : $pcount" 
+    echo "FAILED  : $fcount" 
+    cat $tPASS_FILE $tFAIL_FILE
+    echo "###########################End of running $0########################"
+
+#cleanup
+    rm -f $tPASS_FILE $tFAIL_FILE $tRETURN_FILE $tSTDERR_FILE 
+#   rm -rf $LXT_TMP_DIR
+	if [[ $pcount -eq 0 ]] && [[ $total -eq 0 ]];then
+	  exit 0
+    fi
+    test $pcount -eq 0 && exit 1
+    test $pcount -eq $total && exit 0 
+    exit 1
+}
+
+#
+# private function
+#
+
+#
+# print the error message and call stack. return 1
+#
+tfail_ ()
+{
+    local msg=$*
+    tlog "$msg" "ERROR" >>$tFAIL_FILE 
+
+    return 1
+}
+
+#
+# print the sucessful message. return 0
+#
+tpass_ ()
+{
+    local msg=$*
+    tlog "$msg" "PASS" >> $tPASS_FILE
+
+    return 0
+}
+
+_trun_ ()
+{
+    local cmd="$1"
+    local chk="$2"
+    local cur_date=$(tdate)
+
+    local stdout=$(eval "$cmd" 2>$tSTDERR_FILE; echo $? >$tRETURN_FILE 2>/dev/null)
+#timeout -- how to set timeout?
+    local exit_status=$(< $tRETURN_FILE)
+    local stderr=$(< $tSTDERR_FILE)
+    local msg=CMD
+#tnot
+    if test x$chk = x1; then
+        test $exit_status -eq 0 || msg=PASS
+        test $exit_status -eq 0 && msg=FAIL
+#should let the tester know this is the negative testing
+#if cmd return 0 we will return 1 and vice versa
+        cmd="[NOT] $cmd"
+    fi
+#tok
+    if test x$chk = x0; then
+        test $exit_status -eq 0 && msg=PASS
+        test $exit_status -eq 0 || msg=FAIL
+    fi
+
+    tSTDOUT=$stdout
+    tSTDERR=$stderr
+
+    test $tIGNORE_STDOUT -eq 1 && stdout='redirect the stdout to /dev/null' 
+    test $tIGNORE_STDERR -eq 1 && stderr='redirect the stderr to /dev/null' 
+
+    echo "[$msg][$cur_date][$HOSTNAME]$cmd" 
+    echo "STDOUT:"
+    test "x$stdout" = x || echo "$stdout"
+    echo "STDERR:$stderr"
+    echo "RETURN:$exit_status"
+    echo
+
+    return $exit_status
+}
+
+#
+# setup the testing environment
+#
+_tsetup_ ()
+{
+
+    LXT_TMP_DIR="/mnt/testarea/lxt";
+
+    test -z "$HOSTNAME" && HOSTNAME=$(hostname)
+    test -d "$LXT_TMP_DIR" || mkdir -p "$LXT_TMP_DIR" >& /dev/null || exit 1
+
+    tSTDERR_FILE="$LXT_TMP_DIR/stderr.$$"
+    test -e "$tSTDERR_FILE" || > "$tSTDERR_FILE" || exit 1
+    tRETURN_FILE="$LXT_TMP_DIR/return.$$"
+    test -e "$tRETURN_FILE" || > "$tRETURN_FILE" || exit 1
+    tPASS_FILE="$LXT_TMP_DIR/tc.pass.$$"
+    test -e "$tPASS_FILE" || > "$tPASS_FILE" || exit 1
+    tFAIL_FILE="$LXT_TMP_DIR/tc.fail.$$"
+    test -e "$tFAIL_FILE" || > "$tFAIL_FILE" || exit 1
+}
+
+#
+# main
+#
+
+# global variables
+tIGNORE_STDOUT=0
+tIGNORE_STDERR=0
+tSTDOUT=
+tSTDERR=
+#LXT_TMP_DIR
+# only used in this file
+tPASS_FILE=
+tFAIL_FILE=
+
+_tsetup_
diff --git a/tests/md_trim_support/LICENSE b/tests/md_trim_support/LICENSE
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/tests/md_trim_support/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
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+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
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+
+  Developers that use the GNU GPL protect your rights with two steps:
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+giving you legal permission to copy, distribute and/or modify it.
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+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
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+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
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+patents cannot be used to render the program non-free.
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+  The precise terms and conditions for copying, distribution and
+modification follow.
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+  12. No Surrender of Others' Freedom.
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+    (at your option) any later version.
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/tests/md_trim_support/Makefile b/tests/md_trim_support/Makefile
new file mode 100644
index 0000000..1564d22
--- /dev/null
+++ b/tests/md_trim_support/Makefile
@@ -0,0 +1,81 @@
+# Copyright (c) 2006 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.
+#
+# This program is distributed in the hope that it will 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 to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# Author: guazhang <guazhang@redhat.com>
+
+# The toplevel namespace within which the test lives.
+TOPLEVEL_NAMESPACE=kernel
+
+# The name of the package under test:
+PACKAGE_NAME=storage
+
+# The path of the test below the package:
+RELATIVE_PATH=mdadm/trim-support
+
+# Version of the Test. Used with make tag.
+export TESTVERSION=1.0
+
+# The combined namespace of the test.
+export TEST=/$(TOPLEVEL_NAMESPACE)/$(PACKAGE_NAME)/$(RELATIVE_PATH)
+
+
+# A phony target is one that is not really the name of a file.
+# It is just a name for some commands to be executed when you
+# make an explicit request. There are two reasons to use a
+# phony target: to avoid a conflict with a file of the same
+# name, and to improve performance.
+.PHONY: all install download clean
+
+# executables to be built should be added here, 
+# they will be generated on the system under test.
+BUILT_FILES=
+
+# data files, .c files, scripts anything needed to either compile the test 
+# and/or run it.
+FILES=$(METADATA) include.sh Makefile PURPOSE main.sh tc.sh
+
+run: $(FILES) build
+	./main.sh
+
+build: $(BUILT_FILES)
+#	chmod a+x ./main.sh
+
+clean:
+	rm -f *~ *.rpm $(BUILT_FILES)
+
+# You may need to add other targets e.g. to build executables from source code
+# Add them here:
+
+
+# Include Common Makefile
+include /usr/share/rhts/lib/rhts-make.include
+
+# Generate the testinfo.desc here:
+$(METADATA): Makefile
+	@touch $(METADATA)
+# Change to the test owner's name
+	@echo "Owner:        guazhang <guazhang@redhat.com>" > $(METADATA)
+	@echo "Name:         $(TEST)" >> $(METADATA)
+	@echo "Path:         $(TEST_DIR)"       >> $(METADATA)
+	@echo "License:      GPLv3" >> $(METADATA)
+	@echo "TestVersion:  $(TESTVERSION)"    >> $(METADATA)
+	@echo "Description:  test the function trim support">> $(METADATA)
+	@echo "TestTime:     1h" >> $(METADATA)
+	@echo "RunFor:       $(PACKAGE_NAME)" >> $(METADATA)
+# add any other packages for which your test ought to run here
+	@echo "Requires:     $(PACKAGE_NAME)" >> $(METADATA)
+	@echo "Requires:	 mdadm" >> $(METADATA)
+# add any other requirements for the script to run here
+
+# You may need other fields here; see the documentation
+	rhts-lint $(METADATA)
diff --git a/tests/md_trim_support/PURPOSE b/tests/md_trim_support/PURPOSE
new file mode 100644
index 0000000..646037f
--- /dev/null
+++ b/tests/md_trim_support/PURPOSE
@@ -0,0 +1,3 @@
+PURPOSE of /tests/kernel/storage/mdadm/trim-support
+Description: Test the function trim support.
+Author: Xiao Ni <xni@redhat.com>
diff --git a/tests/md_trim_support/include.sh b/tests/md_trim_support/include.sh
new file mode 100755
index 0000000..2c56910
--- /dev/null
+++ b/tests/md_trim_support/include.sh
@@ -0,0 +1,672 @@
+#!/bin/bash
+
+# Copyright (c) 2016 Red Hat, Inc. All rights reserved.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Author: guazhang   <guazhang@redhat.com>
+
+source tc.sh || exit 1
+
+rpm -q mdadm || yum install -y mdadm
+JOURNAL_SUPPORT=0
+info=`mdadm --create --help | grep -o "write-journal"`
+if [ "$info" = "write-journal" ]; then
+	JOURNAL_SUPPORT=1
+fi
+
+#Install fio from upstream
+function install_fio() {
+
+	git_url=git://git.kernel.org/pub/scm/linux/kernel/git/axboe/fio.git
+
+	tok yum install libaio-devel zlib-devel -y
+	tok git clone $git_url
+	tlog "INFO: Installing Fio"
+	tok "cd fio  &&./configure && make && make install"
+	tok which fio
+	if [ $? -ne 0 ]; then
+		tlog "FAIL: Fio not succesffully installed"
+		exit 1
+	fi
+
+	tlog "INFO: Fio succesfully installed"
+}
+
+#Install dt
+function install_dt () { 
+
+	wget http://www.scsifaq.org/RMiller_Tools/ftp/dt/dt-source.tar.gz
+	tar xvf dt-source.tar.gz
+	cd dt.d-WIP/
+	cp -p Makefile.linux Makefile
+	make
+	cp dt /usr/bin
+}
+
+#----------------------------------------------------------------------------#
+# MD_Create_RAID ()
+# Usage:
+#   Create md raid.
+# Parameter:
+# 	$level				# like 0, 1, 3, 5, 10, 50                       
+# 	$dev_list			# like 'sda sdb sdc sdd'
+# 	$raid_dev_num		# like 3                       
+# 	$spar_dev_num		# like 2                                    
+# 	$chunk				# like 64                                     
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR		# $md_raid like '/dev/md0'
+#		MD_DEVS			# $raid_dev_list like '/dev/sda /dev/sdb'
+#----------------------------------------------------------------------------#
+
+function MD_Create_RAID (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -lt 3 ]; then
+		echo 'Usage: MD_Create_RAID $level $dev_list $raid_dev_num \
+			[$spar_dev_num] [$chunk]'
+		exit "${EX_USAGE}"
+	fi
+	# variable definitions
+	RETURN_STR=''
+	MD_DEVS=''
+	local level=$1
+	local dev_list=$2
+	local raid_dev_num=$3
+	local bitmap=$4
+	local spar_dev_num=${5:-0}
+	local chunk=${6:-512}
+	local bitmap_chunksize=${7:-64M}
+	local dev_num=0
+	local raid_dev=''
+	local spar_dev=''
+	local md_raid=""
+	local mtdata=${8:-1.2}
+	local ret=0
+	# start to create
+	echo "INFO: Executing MD_Create_RAID() to create raid $level"
+	# check if the given disks are more the needed
+	for i in $dev_list; do
+		dev_num=$((dev_num+1))
+	done
+	if [ $dev_num -lt $(($raid_dev_num+$spar_dev_num)) ]; then
+		echo "FAIL: Required devices are more than given."
+		exit 1
+	fi
+	# get free md device name, only scan /dev/md[0-15].
+	for i in `seq 1 30`; do
+		ls -l /dev/md$i > /dev/null 2>&1
+		if [ $? -ne 0 ]; then
+			md_raid=/dev/md$i
+			break
+		fi
+	done
+	# get raid disk list.
+	for i in `seq 1 $raid_dev_num`; do
+		tmp_dev=`echo $dev_list | cut -d " " -f $i`
+		raid_dev="$raid_dev /dev/$tmp_dev"
+	done
+	echo "INFO: Created md raid with these raid devices \"$raid_dev\"."
+	# get spare disk list.
+	if [ $spar_dev_num -ne 0 ]; then
+		for i in `seq $((raid_dev_num+1)) $((raid_dev_num+spar_dev_num))`; do
+			tmp_dev=`echo $dev_list | cut -d " " -f $i`
+			spar_dev="$spar_dev /dev/$tmp_dev"
+		done
+		echo "INFO: Created md raid with these spare disks \"$spar_dev\"."
+	fi
+	sleep 5
+	if [ $level -eq 1  ]; then
+		# create md raid1 without "--chunk"
+		if [ $bitmap -eq 1 ]; then
+			if [ $spar_dev_num -ne 0 ]; then
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--spare-devices $spar_dev_num $spar_dev \
+				--bitmap=internal --bitmap-chunk=$bitmap_chunksize"
+			else
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--bitmap=internal --bitmap-chunk=$bitmap_chunksize"
+			fi
+		elif [ $bitmap -eq 2 ];then
+			touch /home/bitmap_md_$level
+			echo "INFO:bitmap backup in /home/bitmap_md_$level"
+			bitmap_dir="/home/bitmap_md_$level"
+			if [ $spar_dev_num -ne 0 ]; then
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--spare-devices $spar_dev_num $spar_dev \ 
+				--bitmap=$bitmap_dir --force  --bitmap-chunk=$bitmap_chunksize"
+			else
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--bitmap=$bitmap_dir --force --bitmap-chunk=$bitmap_chunksize"
+			fi
+		else
+			if [ $spar_dev_num -ne 0 ]; then
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--spare-devices $spar_dev_num $spar_dev"
+			else
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev"
+			fi
+		fi
+	else
+		# create md raid
+		if [ $bitmap -eq 1 ]; then
+			if [ $spar_dev_num -ne 0 ]; then
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--spare-devices $spar_dev_num $spar_dev --chunk $chunk \
+				--bitmap=internal --bitmap-chunk=$bitmap_chunksize"
+			else
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev --chunk $chunk \
+				--bitmap=internal --bitmap-chunk=$bitmap_chunksize"
+			fi
+		elif [ $bitmap -eq 2 ];then
+			touch /home/bitmap_md_$level
+			echo "INFO:bitmap backup in /home/bitmap_md_$level"
+			bitmap_dir="/home/bitmap_md_$level"
+			if [ $spar_dev_num -ne 0 ]; then
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--spare-devices $spar_dev_num $spar_dev --chunk $chunk \
+				--bitmap=$bitmap_dir --force  --bitmap-chunk=$bitmap_chunksize"
+			else
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev --chunk $chunk \
+				--bitmap=$bitmap_dir --force --bitmap-chunk=$bitmap_chunksize"
+			fi
+		else
+			if [ $spar_dev_num -ne 0 ]; then
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev \
+				--spare-devices $spar_dev_num $spar_dev --chunk $chunk"
+			else
+				tok "mdadm --create --run $md_raid --level $level \
+				--metadata $mtdata \
+				--raid-devices $raid_dev_num $raid_dev --chunk $chunk"
+			fi
+		fi
+	fi
+
+	if [ $? -ne 0 ]; then
+		ret=$?
+		echo "INFO:create $md_raid failed.will remove all raid disk "
+		exit 1
+	fi
+
+	echo "create `date +%s` mdadm -CR $md_raid -l $level -e $mtdata -n $raid_dev_num \"$raid_dev\"  -x=$spar_dev_num $spar_dev bitmap=$bitmap --chunk $chunk --bitmap-chunk=$bitmap_chunksize"
+	echo "INFO:cat /proc/mdstat######################"
+	cat /proc/mdstat
+	lsblk
+	trun "ls /dev/md* |egrep md[0-9]+"
+	echo "INFO:mdadm -D $md_raid #########################"
+	mdadm --detail $md_raid
+	# define global variables
+	MD_DEVS="$raid_dev $spar_dev"
+	RETURN_STR="$md_raid"
+	return $ret
+}
+####################### End of functoin MD_Create_RAID
+
+#----------------------------------------------------------------------------#
+# MD_Create_RAID_Journal ()
+# Usage:
+#   Create md raid with journal.
+# Parameter:
+# 	$level				# like 4, 5, 6
+# 	$dev_list			# like 'sda sdb sdc sdd'
+# 	$raid_dev_num		# like 3
+# 	$spar_dev_num		# like 2
+# 	$chunk				# like 64
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR		# $md_raid like '/dev/md0'
+#		MD_DEVS			# $raid_dev_list like '/dev/sda /dev/sdb'
+#----------------------------------------------------------------------------#
+
+function MD_Create_RAID_Journal (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -lt 3 ]; then
+		echo 'Usage: MD_Create_RAID_Journal $level $dev_list $raid_dev_num \
+		[$spar_dev_num] [$chunk]'
+		exit "${EX_USAGE}"
+	fi
+	# variable definitions
+	RETURN_STR=''
+	MD_DEVS=''
+	local level=$1
+	local dev_list=$2
+	local raid_dev_num=$3
+	local bitmap=$4
+	local spar_dev_num=${5:-0}
+	local chunk=${6:-512}
+	local bitmap_chunksize=${7:-64M}
+	local mtdata=${8:-1.2}
+	local dev_num=0
+	local raid_dev=''
+	local spar_dev=''
+	local md_raid=""
+	local ret=0
+	# start to create
+	echo "INFO: Executing MD_Create_RAID_Journal() to create raid $level"
+	# check if the given disks are more the needed
+	for i in $dev_list; do
+		dev_num=$((dev_num+1))
+	done
+	if [ $dev_num -lt $(($raid_dev_num+$spar_dev_num)) ]; then
+		echo "FAIL: Required devices are more than given."
+		exit 1
+	fi
+	# get free md device name, only scan /dev/md[0-15].
+	for i in `seq 0 15`; do
+		ls -l /dev/md$i > /dev/null 2>&1
+		if [ $? -ne 0 ]; then
+			md_raid=/dev/md$i
+			break
+		fi
+	done
+	# take the first disk as journal disk
+	tmp_dev=`echo $dev_list | cut -d " " -f 1`
+	journal_dev="/dev/$tmp_dev"
+	echo "INFO: Created md raid with write journal disk \"$journal_dev\"."
+
+	# get raid disk list.
+	for i in `seq 2 $raid_dev_num`; do
+		tmp_dev=`echo $dev_list | cut -d " " -f $i`
+		raid_dev="$raid_dev /dev/$tmp_dev"
+	done
+	echo "INFO: Created md raid with these raid devices \"$raid_dev\"."
+
+	# get spare disk list.
+	if [ $spar_dev_num -ne 0 ]; then
+		for i in `seq $((raid_dev_num+1)) $((raid_dev_num+spar_dev_num))`; do
+			tmp_dev=`echo $dev_list | cut -d " " -f $i`
+			spar_dev="$spar_dev /dev/$tmp_dev"
+		done
+		echo "INFO: Created md raid with these spare disks \"$spar_dev\"."
+	fi
+
+	#There is one write journal disk, so change the raid_dev_num--
+	((raid_dev_num--))
+
+	# create md raid
+	# prepare the parameter
+	BITMAP=""
+	SPAR_DEV=""
+#	if [ $bitmap -eq 1 ]; then
+#		BITMAP="--bitmap=internal --bitmap-chunk=$bitmap_chunksize"
+#	fi
+	if [ $spar_dev_num -ne 0 ]; then
+		SPAR_DEV="--spare-devices $spar_dev_num $spar_dev"
+	fi
+	if [ -n "$journal_dev" ]; then
+		WRITE_JOURNAL="--write-journal $journal_dev"
+	fi
+	tok "mdadm --create --run $md_raid --level $level --metadata $mtdata --raid-devices $raid_dev_num $raid_dev $WRITE_JOURNAL $SPAR_DEV $BITMAP --chunk $chunk"
+	ret=$?
+	echo "create raid time `date +%s` mdadm -CR $md_raid --level $level --metadata $mtdata --raid-devices $raid_dev_num $raid_dev $WRITE_JOURNAL $SPAR_DEV $BITMAP --chunk $chunk "
+	cat /proc/mdstat
+	mdadm --detail $md_raid
+	# define global variables
+	MD_DEVS="$journal_dev $raid_dev $spar_dev"
+	RETURN_STR="$md_raid"
+	return $ret
+}
+####################### End of functoin MD_Create_RAID_Journal
+
+#----------------------------------------------------------------------------#
+# MD_Save_RAID ()
+# Usage:
+#   Save md raid configuration.
+# Parameter:
+# 	NULL
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       NULL
+#----------------------------------------------------------------------------#
+
+function MD_Save_RAID (){
+	echo "INFO: Executing MD_Save_RAID()"
+	echo "DEVICE $MD_DEVS" > /etc/mdadm.conf
+	if [ $? -ne 0 ]; then
+		echo "FAIL: Failed to save md device info to /etc/mdadm.conf"
+	fi
+	mdadm --detail --scan >> /etc/mdadm.conf
+	if [ $? -ne 0 ]; then
+		echo "FAIL: Failed to save md state info to /etc/mdadm.conf"
+	fi
+	return 0
+}
+####################### End of functoin MD_Save_RAID
+
+#----------------------------------------------------------------------------#
+# MD_Clean_RAID ()
+# Usage:
+#	Clean md raid.
+# Parameter:
+#   $md_name		# like '/dev/md0'
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       NULL
+#----------------------------------------------------------------------------#
+
+function MD_Clean_RAID (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -ne 1 ]; then
+		echo 'Usage: MD_Clean_RAID $md_name'
+		exit "${EX_USAGE}"
+	fi
+	echo "INFO: Executing MD_Clean_RAID() against this md device: $md_name"
+	local md_name=$1	
+	echo "mdadm --stop $md_name"
+	mdadm --stop $md_name
+	st=$?
+	while [ $st -ne 0 ]; do
+		echo "INFO:mdadm stop failed"	
+		sleep 10
+		rm -rf /etc/mdadm.conf
+		for i in $(cat /proc/mdstat |grep "inactive" |awk '{print $1}') ;do
+			mdadm --stop "/dev/$i"
+		done
+	mdadm --stop $md_name
+	st=$?
+		
+	done
+	sleep 10	
+	echo "clean devs : $MD_DEVS"
+	for dev in $MD_DEVS; do
+		echo "mdadm --zero-superblock $dev"
+		`mdadm --zero-superblock $dev` 
+	done
+	#`mdadm --zero-superblock "$MD_DEVS"` 
+	echo "ret is $?"
+	rm -rf /etc/mdadm.conf
+	sleep 10
+	echo "ls $md_name"
+	tnot "ls $md_name"
+	if [ $? = 1 ];then
+		tlog "mdadm --stop command can't delete md node name $md_name in /dev node"
+		trun "ls /dev/md*"
+		trun "cat /proc/mdstat"
+	else
+		tlog "mdadm --stop can delete md node name $md_name in /dev"
+	fi
+	return 0
+}
+####################### End of functoin MD_Clean_RAID
+
+#----------------------------------------------------------------------------#
+# MD_Get_State_RAID ()
+# Usage:
+#   get md raid status
+# Parameter:
+#   $md_name		# like "/dev/md0"
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR  # $state, like 'clean, resyncing'
+#----------------------------------------------------------------------------#
+
+function MD_Get_State_RAID (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -lt 1 ]; then
+	    echo 'Usage: MD_Get_State_RAID $md_name'
+	    exit "${EX_USAGE}"
+	fi
+
+	RETURN_STR=''
+	local md_name=$1
+	local state=''
+	local start_times=0
+	local end_times=0
+	local spend_times=0
+#    	echo "INFO: Executing MD_Get_State_RAID() against this md array: $md_name"
+	start_times=$(date +%s)
+	echo " $start_times start_time against this md array: $md_name "
+#	echo "mdadm --detail $md_name | grep "State :" | cut -d ":" -f 2 | cut -d " " -f 2"
+	state=`mdadm --detail $md_name | grep "State :" | cut -d ":" -f 2 | cut -d " " -f 2`
+	sta=$?
+	if [ -z "$state" ]; then
+		echo "`date +%s`  first_time_failed get raid statu #############################+++++++++++++++++++++++++"
+		while [ $sta ];do
+			state=`mdadm --detail $md_name | grep "State :" | cut -d ":" -f 2 | cut -d " " -f 2`
+			sta=$?
+			end_times=$(date +%s)
+			spend_times=$((end_times - start_times))
+			if [[ $spend_times -gt 10  ]];then
+				echo "get raid status spend $spend_times and exit  "
+				ls /dev/md* |egrep md[0-9]+
+				cat /proc/mdstat
+				exit 1
+			fi
+		done
+		
+		echo "$spend_times spend raid statu_time #############################"	
+	fi
+	echo "state is $state"
+	RETURN_STR="$state"
+	return 0
+}
+####################### End of functoin MD_Get_State_RAID
+
+
+#----------------------------------------------------------------------------#
+# MD_IO_Test ()
+# Usage:
+#   IO test using dt against block level
+# Parameter:
+#   $dt_target		# like "/dev/md0"
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#		NULL
+#----------------------------------------------------------------------------#
+
+function MD_IO_Test (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -lt 1 ]; then
+		echo 'Usage: MD_IO_Test $dt_target'
+		exit "${EX_USAGE}"
+	fi
+	# this parameter should be change to 7200 during a real testing cycle                                                        
+	local dt_runtime=72
+	local dt_logfile=""                            
+	test -f /tmp/dt_XXXXXXXX.log || `mktemp /tmp/dt_XXXXXXXX.log`
+	dt_logfile="/tmp/dt_XXXXXXXX.log"
+	local dt_target=$1                                                          
+	echo -n "INFO: dt against ${dt_target} is running with "                    
+	echo "runtime: ${dt_runtime}s, log file is: ${dt_logfile}" 
+	echo "dt  slices=16 disable=eof,pstats flags=direct \
+		oncerr=abort min=b max=256k \
+		pattern=iot iodir=reverse prefix='%d@%h (pid %p)' \
+		of=${dt_target} log=${dt_logfile} \
+		runtime=${dt_runtime}"
+	`dt  slices=16 disable=eof,pstats flags=direct \
+		oncerr=abort min=b max=256k \
+		pattern=iot iodir=reverse prefix='%d@%h (pid %p)' \
+		of=${dt_target} log=${dt_logfile} \
+		runtime=${dt_runtime}`
+	if [ $? -ne 0 ]; then
+		echo "FAIL: Failed to run dt testing against $dt_target"
+		exit 1
+	fi
+	return 0
+}
+####################### End of functoin MD_IO_Test
+
+function create_loop_devices (){
+	Create_Loop_Devices $@
+}
+
+# ---------------------------------------------------------#
+# Create_Loop_Devices ()
+# Usage:
+#   Create loop devices. We will find out the free number
+#   of loop to bind on tmp file.
+# Parameter:
+#   $count      #like "12"
+#   $size_mib   #like "1024"
+# Returns:
+#   Return code:
+#       0 on success
+#       1 if something went wrong.
+#   Return string:
+#       RETURN_STR like 'loop9 loop10'
+# ---------------------------------------------------------#
+
+function Create_Loop_Devices (){
+	EX_USAGE=64 # Bad arg format
+	if [ $# -ne 2 ]; then
+		echo 'Usage: Create_Loop_Devices $count $size_mib'
+		exit "${EX_USAGE}"
+	fi
+	RETURN_STR=''
+	local count="$1"
+	local size_mib="$2"
+	local loop_dev_list=''
+	for X in `seq 1 ${count}`;do
+		local loop_file_name=$(mktemp /tmp/loop.XXXXXX)
+		dd if=/dev/zero of=${loop_file_name} count=$size_mib  bs=1M 1>/dev/null 2>&1
+		local loop_dev_name=$(losetup -f)
+		#BUG: RHEL5 only support 8 loop device and we need to check whether we are run out of it
+		local command="losetup ${loop_dev_name} ${loop_file_name} 1>/dev/null 2>&1"
+		eval "${command}"
+		if [ $? -eq 0 ];then
+			loop_dev_list="${loop_dev_list}${loop_dev_name} "
+		else
+			echo "FAIL: Failed to create loop devices with command: ${command}"
+			return 1
+		fi
+	done
+	loop_dev_list=$(echo "${loop_dev_list}" | sed -e 's/ $//')
+	echo "${loop_dev_list}" #Back capability
+	loop_dev_list=$(echo "${loop_dev_list}" | sed -e 's/\/dev\///g')
+	RETURN_STR="${loop_dev_list}"
+	return 0
+}
+
+function get_disks() {
+
+	disk_num=$1
+	disk_size=$2
+
+	LOOP_DEVICE_LIST=$(create_loop_devices $disk_num $disk_size)
+	for i in $(seq 1 $disk_num); do
+		disk_temp=$(echo $LOOP_DEVICE_LIST | cut -d " " -f $i)
+		disk_temp=$(echo $disk_temp | cut -d "/" -f 3)
+		devlist="$devlist $disk_temp"
+	done
+	
+	RETURN_STR="$devlist"
+}
+
+function remove_disks() {
+
+	disks=$1			  
+	for disk in $disks; do
+		try_num=1
+		disk="/dev/"$disk
+		echo "losetup -d $disk"
+		losetup -d $disk
+		state=$?
+		while [ $state -ne 0 ]; do
+			if [ $try_num -eq 4 ]; then
+				echo "FAIL: After tried 3 times losetup -d $disk"
+				return 1
+			fi
+			sleep 1
+			losetup -d $disk
+			state=$?
+			((try_num++))
+		done
+	done
+	rm -rf /tmp/loop.*
+	
+}
+
+
+local_clean(){
+	local md_name=""
+	(mdadm -E /dev/sd[b-i]1 |grep "raid") || (cat /proc/mdstat |grep "inactive") || (ls /dev/md* |egrep md[0-9]+)
+	if [ $? = 0 ];then
+		echo "have some md don't clean"
+		ls /dev/md* |egrep md[0-9]+
+		for md_name in "$(ls /dev/md* |egrep md[0-9]+)" ;do
+			trun "mdadm --stop $md_name"
+			sleep 5
+			tlog "$md_name have stop"
+		done
+		rm -rf  /etc/mdadm.conf 
+		trun "mdadm -Ss";sleep 5
+		trun "mdadm  --zero-superblock  /dev/sd[b-i]1"
+		trun "mdadm  --zero-superblock /dev/sd[b-i]"
+		trun "cat /proc/mdstat"
+		lsblk 
+	fi
+
+	echo "INFO:need to remove partition first"
+	for i in b c d e f g h i ;do
+		mdadm  --zero-superblock "/dev/sd$i"
+		sleep 1
+		gdisk /dev/sd$i  &> /dev/null  <<EOF
+d
+3
+d
+2
+d
+1
+w
+Y
+EOF
+		sleep 1
+		partprobe /dev/sd$i 
+	done
+
+	tlog "have been remove all partition,check it"
+	lsblk;cat /proc/mdstat; ls /dev/md*
+
+}
+
diff --git a/tests/md_trim_support/main.sh b/tests/md_trim_support/main.sh
new file mode 100755
index 0000000..e34f85d
--- /dev/null
+++ b/tests/md_trim_support/main.sh
@@ -0,0 +1,140 @@
+#!/bin/bash
+# vim: dict=/usr/share/beakerlib/dictionary.vim cpt=.,w,b,u,t,i,k
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   runtest.sh of /tests/kernel/storage/mdadm/trim-support
+#   Description: test the function trim support.
+#   Author: Xiao Ni <xni@redhat.com>
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Copyright (c) 2011 Red Hat, Inc. All rights reserved.
+#
+#   This copyrighted material is made available to anyone wishing
+#   to use, modify, copy, or redistribute it subject to the terms
+#   and conditions of the GNU General Public License version 2.
+#
+#   This program is distributed in the hope that it will be
+#   useful, but WITHOUT ANY WARRANTY; without even the implied
+#   warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+#   PURPOSE. See the GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public
+#   License along with this program; if not, write to the Free
+#   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+#   Boston, MA 02110-1301, USA.
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#set -x
+# Include Beaker environment
+. /usr/bin/rhts-environment.sh
+. /usr/lib/beakerlib/beakerlib.sh
+
+# Include Storage related environment
+. include.sh || exit 200
+
+function Stop_Raid (){
+	tok mdadm --stop "$MD_RAID"
+	if [ $? -ne 0 ]; then
+		tlog "FAIL: fail to stop md raid $MD_RAID."
+		exit 1
+	fi
+}
+
+function runtest (){
+	
+#	tok rmmod raid456
+	tok modprobe raid456 devices_handle_discard_safely=Y
+	tok "echo Y >/sys/module/raid456/parameters/devices_handle_discard_safely"
+#	info=`cat /etc/redhat-release | grep -oE "7.2|7.3"`
+#	if [ -n "$info" ]; then
+		trun "modprobe raid0 devices_discard_performance=Y"
+		trun "echo Y >/sys/module/raid0/parameters/devices_discard_performance"
+#	fi
+	devlist=''
+
+	which mkfs.xfs
+	if [ $? -eq 0 ]; then
+		FILESYS="xfs"
+	else
+		FILESYS="ext4"
+	fi
+
+	disk_num=6
+	#disk size M
+	disk_size=500
+	get_disks $disk_num $disk_size
+	devlist=$RETURN_STR
+
+	if [ $JOURNAL_SUPPORT -eq 1 ]; then
+		RAID_LIST="0 1 4 5 6 4-j 5-j 6-j 10"
+	else
+		RAID_LIST="0 1 4 5 6 10"
+	fi
+	for level in $RAID_LIST; do
+
+		RETURN_STR=''
+		MD_RAID=''
+		MD_DEV_LIST=''
+		raid_num=5
+		if [ "$level" = "0" ];then
+			spare_num=0
+			bitmap=0
+		else
+			spare_num=1
+			bitmap=1
+		fi
+
+		if [[ $level =~ "j" ]]; then
+			MD_Create_RAID_Journal ${level:0:1} "$devlist" $raid_num $bitmap $spare_num
+		else
+			MD_Create_RAID $level "$devlist" $raid_num $bitmap $spare_num
+		fi
+
+		if [ $? -ne 0 ];then
+			tlog "FAIL: Failed to create md raid $RETURN_STR"
+			break
+		else
+			tlog "INFO: Successfully created md raid $RETURN_STR"
+		fi
+
+		MD_RAID=$RETURN_STR
+	
+		MD_Get_State_RAID $MD_RAID
+		state=$RETURN_STR
+		
+		while [[ $state != "active" && $state != "clean" ]]; do
+			sleep 5
+			MD_Get_State_RAID $MD_RAID
+			state=$RETURN_STR
+		done
+	
+		tlog "mkfs -t $FILESYS $MD_RAID"
+		(mkfs -t $FILESYS $MD_RAID) || (mkfs -t $FILESYS -f $MD_RAID)
+		if [ ! -d /mnt/md_test ]; then
+			mkdir /mnt/md_test
+		fi
+		tok mount -t $FILESYS $MD_RAID /mnt/md_test 
+		tok fstrim -v /mnt/md_test
+		if [ $? -ne 0 ];then
+			tlog "fstrim -v /mnt/md_test failed"	
+		fi
+	
+		tok umount $MD_RAID
+		MD_Clean_RAID $MD_RAID
+	
+	done	
+	
+	remove_disks "$devlist"
+	if [ $? -ne 0 ];then
+		exit 1
+	fi
+}
+
+
+tlog "running $0"
+trun "rpm -q mdadm || yum install -y mdadm"
+trun "uname -a"
+runtest
+
+tend
diff --git a/tests/md_trim_support/tc.sh b/tests/md_trim_support/tc.sh
new file mode 100755
index 0000000..ba10f34
--- /dev/null
+++ b/tests/md_trim_support/tc.sh
@@ -0,0 +1,266 @@
+#!/bin/bash
+
+# Copyright (c) 2016 Red Hat, Inc. All rights reserved.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#test x$LXT_TC = x || return
+#LXT_TC=1
+
+#
+# print the current date
+# usage: d=$(tdate)
+#
+tdate () 
+{
+    date '+%T' 2>/dev/null
+}
+
+#
+# print the log information
+# usage: tlog "hello world" "WARNING"
+#
+tlog ()
+{
+    local msg=$1
+    local log_level=${2:-INFO}
+    local cur_date=$(tdate)
+
+    echo "[$log_level][$cur_date]$msg"
+    
+    return 0
+}
+
+#
+# run the cmd and format the log. return the exitint status of cmd
+# use the global variables: tSTDOUT and tSTDERR to return the stdout and stderr
+# usage: trun "ls"
+#        trun "ls"; echo $?
+#        stdout=$tSTDOUT
+#        stderr=$tSTDERR
+#
+trun ()
+{
+    local cmd="$*"
+    
+    _trun_ "$cmd"
+}
+
+#
+# verify the execution of command
+# if the cmd return 0, mark this checkpoint failed and return 1
+# if not, mark it passed and return 0
+# usage: tnot "ls /not_existing"
+#
+tnot () {
+    local cmd="$*"
+    _trun_ "$cmd" 1
+    if test $? -eq 0; then 
+        tfail_ "$cmd" ;
+    else
+        tpass_ "$cmd" ;
+    fi 
+}
+
+#
+# verify the execution of command
+# if the cmd return 0, mark this checkpoint passed and return 0
+# if not, mark it failed and return 1
+# usage: tok "ls /"
+#
+tok ()
+{
+    local cmd="$*"
+    _trun_ "$cmd" 0
+    if test $? -eq 0; then 
+        tpass_ "$cmd" ;
+    else
+        tfail_ "$cmd" ;
+    fi 
+}
+
+#
+# verify the execution of command
+# if the cmd return 0, mark this checkpoint passed and return 0
+# if not, mark it failes and exit
+# usage: terr "ls"
+#
+#terr ()
+#{
+#    tok "$*" || tend
+#}
+
+#
+# verify the execution of command
+# if the cmd return 0, will continue to run the script
+# if not, mark it failes and exit
+# usage: terr "ls"
+#
+terr ()
+{
+    local cmd="$*"
+    _trun_ "$cmd" 0
+    if test $? -ne 0; then 
+        tfail_ "$cmd" ;
+        tend ;
+    fi 
+}
+
+#
+# exit the program and print the log message
+# usage: texit "error message" 100
+# similar to the exception 
+#
+texit ()
+{
+    msg=$1
+    err=$2
+    is_null $err && err=1
+    test $err -lt 1 || err=1 
+
+    tlog "$msg" "ERROR"
+    exit $2 
+}
+
+#
+# print the test report, cleanup the testing bed and  close the testing. 
+# usage: tend
+#
+tend ()
+{
+    local pcount=$(wc -l $tPASS_FILE | awk '{print $1}')
+    local fcount=$(wc -l $tFAIL_FILE | awk '{print $1}')
+    local total=$(( $pcount + $fcount ))
+
+    echo "#################################Test Report###############################"
+    echo "TOTAL   : $total" 
+    echo "PASSED  : $pcount" 
+    echo "FAILED  : $fcount" 
+    cat $tPASS_FILE $tFAIL_FILE
+    echo "###########################End of running $0########################"
+
+#cleanup
+    rm -f $tPASS_FILE $tFAIL_FILE $tRETURN_FILE $tSTDERR_FILE 
+#   rm -rf $LXT_TMP_DIR
+	if [[ $pcount -eq 0 ]] && [[ $total -eq 0 ]];then
+	  exit 0
+    fi
+    test $pcount -eq 0 && exit 1
+    test $pcount -eq $total && exit 0 
+    exit 1
+}
+
+#
+# private function
+#
+
+#
+# print the error message and call stack. return 1
+#
+tfail_ ()
+{
+    local msg=$*
+    tlog "$msg" "ERROR" >>$tFAIL_FILE 
+
+    return 1
+}
+
+#
+# print the sucessful message. return 0
+#
+tpass_ ()
+{
+    local msg=$*
+    tlog "$msg" "PASS" >> $tPASS_FILE
+
+    return 0
+}
+
+_trun_ ()
+{
+    local cmd="$1"
+    local chk="$2"
+    local cur_date=$(tdate)
+
+    local stdout=$(eval "$cmd" 2>$tSTDERR_FILE; echo $? >$tRETURN_FILE 2>/dev/null)
+#timeout -- how to set timeout?
+    local exit_status=$(< $tRETURN_FILE)
+    local stderr=$(< $tSTDERR_FILE)
+    local msg=CMD
+#tnot
+    if test x$chk = x1; then
+        test $exit_status -eq 0 || msg=PASS
+        test $exit_status -eq 0 && msg=FAIL
+#should let the tester know this is the negative testing
+#if cmd return 0 we will return 1 and vice versa
+        cmd="[NOT] $cmd"
+    fi
+#tok
+    if test x$chk = x0; then
+        test $exit_status -eq 0 && msg=PASS
+        test $exit_status -eq 0 || msg=FAIL
+    fi
+
+    tSTDOUT=$stdout
+    tSTDERR=$stderr
+
+    test $tIGNORE_STDOUT -eq 1 && stdout='redirect the stdout to /dev/null' 
+    test $tIGNORE_STDERR -eq 1 && stderr='redirect the stderr to /dev/null' 
+
+    echo "[$msg][$cur_date][$HOSTNAME]$cmd" 
+    echo "STDOUT:"
+    test "x$stdout" = x || echo "$stdout"
+    echo "STDERR:$stderr"
+    echo "RETURN:$exit_status"
+    echo
+
+    return $exit_status
+}
+
+#
+# setup the testing environment
+#
+_tsetup_ ()
+{
+
+    LXT_TMP_DIR="/mnt/testarea/lxt";
+
+    test -z "$HOSTNAME" && HOSTNAME=$(hostname)
+    test -d "$LXT_TMP_DIR" || mkdir -p "$LXT_TMP_DIR" >& /dev/null || exit 1
+
+    tSTDERR_FILE="$LXT_TMP_DIR/stderr.$$"
+    test -e "$tSTDERR_FILE" || > "$tSTDERR_FILE" || exit 1
+    tRETURN_FILE="$LXT_TMP_DIR/return.$$"
+    test -e "$tRETURN_FILE" || > "$tRETURN_FILE" || exit 1
+    tPASS_FILE="$LXT_TMP_DIR/tc.pass.$$"
+    test -e "$tPASS_FILE" || > "$tPASS_FILE" || exit 1
+    tFAIL_FILE="$LXT_TMP_DIR/tc.fail.$$"
+    test -e "$tFAIL_FILE" || > "$tFAIL_FILE" || exit 1
+}
+
+#
+# main
+#
+
+# global variables
+tIGNORE_STDOUT=0
+tIGNORE_STDERR=0
+tSTDOUT=
+tSTDERR=
+#LXT_TMP_DIR
+# only used in this file
+tPASS_FILE=
+tFAIL_FILE=
+
+_tsetup_
diff --git a/tests/tests.yml b/tests/tests.yml
new file mode 100644
index 0000000..d0c8c82
--- /dev/null
+++ b/tests/tests.yml
@@ -0,0 +1,21 @@
+---
+# No tests suitable for container environment
+# No tests suitable for atomic environment
+#
+# Tests suitable for classic environment
+- hosts: localhost
+  roles:
+  - role: standard-test-basic
+    tags:
+    - classic
+    tests:
+    - md_raid_module:
+        run: ./main.sh
+    - md_trim_support:
+        run: ./main.sh
+    required_packages:
+    - mdadm
+    - make
+    - which
+    - kmod
+    - e2fsprogs