diff --git a/btrfs-defrag.sh b/btrfs-defrag.sh
index 5511833..6725d5e 100755
--- a/btrfs-defrag.sh
+++ b/btrfs-defrag.sh
@@ -28,7 +28,7 @@ for P in $BTRFS_DEFRAG_PATHS; do
 		continue
 	fi
 	find "$P" -xdev -size "$BTRFS_DEFRAG_MIN_SIZE" -type f \
-		-exec btrfs filesystem defrag -t 32m -f $BTRFS_VERBOSITY '{}' \;
+		-exec btrfs filesystem defrag -r -t 32m -f $BTRFS_VERBOSITY '{}' \;
 done
 
 } | \
diff --git a/sysconfig.btrfsmaintenance b/sysconfig.btrfsmaintenance
index cfaa81e..60c54f3 100644
--- a/sysconfig.btrfsmaintenance
+++ b/sysconfig.btrfsmaintenance
@@ -44,7 +44,7 @@ BTRFS_BALANCE_MOUNTPOINTS="/"
 
 ## Path:           System/File systems/btrfs
 ## Type:           string(none,daily,weekly,monthly)
-## Default:        "weekly"
+## Default:        *
 ## ServiceRestart: btrfsmaintenance-refresh
 #
 # Frequency of periodic balance.
@@ -52,7 +52,7 @@ BTRFS_BALANCE_MOUNTPOINTS="/"
 # The frequency may be specified using one of the listed values or
 # in the format documented in the "Calendar Events" section of systemd.time(7),
 # if available.
-BTRFS_BALANCE_PERIOD="weekly"
+BTRFS_BALANCE_PERIOD="none"
 
 ## Path:        System/File systems/btrfs
 ## Type:        string
@@ -89,7 +89,7 @@ BTRFS_SCRUB_MOUNTPOINTS="/"
 
 ## Path:        System/File systems/btrfs
 ## Type:        string(none,weekly,monthly)
-## Default:     "monthly"
+## Default:     *
 ## ServiceRestart: btrfsmaintenance-refresh
 #
 # Frequency of periodic scrub.
@@ -97,7 +97,7 @@ BTRFS_SCRUB_MOUNTPOINTS="/"
 # The frequency may be specified using one of the listed values or
 # in the format documented in the "Calendar Events" section of systemd.time(7),
 # if available.
-BTRFS_SCRUB_PERIOD="monthly"
+BTRFS_SCRUB_PERIOD="none"
 
 ## Path:        System/File systems/btrfs
 ## Type:        string(idle,normal)
diff --git a/test/1-timer-systemd.expected b/test/1-timer-systemd.expected
new file mode 100644
index 0000000..2348458
--- /dev/null
+++ b/test/1-timer-systemd.expected
@@ -0,0 +1,24 @@
+btrfsmaintenance-refresh.path              disabled
+btrfs-balance.service                      static
+btrfs-defrag.service                       static
+btrfs-scrub.service                        static
+btrfs-trim.service                         static
+btrfsmaintenance-refresh.service           static
+btrfs-balance.timer                        enabled
+btrfs-defrag.timer                         enabled
+btrfs-scrub.timer                          enabled
+btrfs-trim.timer                           enabled
+btrfs-balance.timer btrfs-balance.service
+btrfs-defrag.timer btrfs-defrag.service
+btrfs-scrub.timer btrfs-scrub.service
+btrfs-trim.timer btrfs-trim.service
+btrfsmaintenance-refresh.path              disabled
+btrfs-balance.service                      static
+btrfs-defrag.service                       static
+btrfs-scrub.service                        static
+btrfs-trim.service                         static
+btrfsmaintenance-refresh.service           static
+btrfs-balance.timer                        disabled
+btrfs-defrag.timer                         disabled
+btrfs-scrub.timer                          disabled
+btrfs-trim.timer                           disabled
diff --git a/test/1-timer-systemd.sh b/test/1-timer-systemd.sh
new file mode 100755
index 0000000..44af555
--- /dev/null
+++ b/test/1-timer-systemd.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Test if the systemd timers are enabled as per the config file
+
+. $(dirname $(realpath "$0"))/utils
+
+load_config "sysconfig.btrfsmaintenance.testall"
+timer_setup "systemd-timer"
+
+systemctl list-unit-files | grep btrfs
+systemctl --all list-timers | grep btrfs | rev | awk '{print $1" "$2}' | rev
+
+timer_reset "systemd-timer"
+systemctl list-unit-files | grep btrfs
+systemctl --all list-timers | grep btrfs | rev | awk '{print $1" "$2}' | rev
+
+unload_config
diff --git a/test/2-timer-cron.expected b/test/2-timer-cron.expected
new file mode 100644
index 0000000..6015672
--- /dev/null
+++ b/test/2-timer-cron.expected
@@ -0,0 +1,27 @@
+btrfsmaintenance-refresh.path              disabled
+btrfs-balance.service                      static
+btrfs-defrag.service                       static
+btrfs-scrub.service                        static
+btrfs-trim.service                         static
+btrfsmaintenance-refresh.service           static
+btrfs-balance.timer                        disabled
+btrfs-defrag.timer                         disabled
+btrfs-scrub.timer                          disabled
+btrfs-trim.timer                           disabled
+daily:
+weekly:
+btrfs-balance
+btrfs-scrub
+monthly:
+btrfs-defrag
+btrfs-trim
+btrfsmaintenance-refresh.path              disabled
+btrfs-balance.service                      static
+btrfs-defrag.service                       static
+btrfs-scrub.service                        static
+btrfs-trim.service                         static
+btrfsmaintenance-refresh.service           static
+btrfs-balance.timer                        disabled
+btrfs-defrag.timer                         disabled
+btrfs-scrub.timer                          disabled
+btrfs-trim.timer                           disabled
diff --git a/test/2-timer-cron.sh b/test/2-timer-cron.sh
new file mode 100755
index 0000000..fceafc3
--- /dev/null
+++ b/test/2-timer-cron.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Test if the cron timers are enabled as per the config file
+
+. $(dirname $(realpath "$0"))/utils
+
+load_config "sysconfig.btrfsmaintenance.testall"
+
+timer_setup "cron"
+systemctl list-unit-files | grep btrfs
+echo daily:
+ls /etc/cron.daily | grep btrfs
+echo weekly:
+ls /etc/cron.weekly| grep btrfs
+echo monthly:
+ls /etc/cron.monthly | grep btrfs
+
+timer_reset "cron"
+systemctl list-unit-files | grep btrfs
+ls /etc/cron.daily | grep btrfs
+ls /etc/cron.weekly| grep btrfs
+ls /etc/cron.monthly | grep btrfs
+
+unload_config
diff --git a/test/3-task-balance.sh b/test/3-task-balance.sh
new file mode 100755
index 0000000..1f8e503
--- /dev/null
+++ b/test/3-task-balance.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# Test is the task: Balance
+
+. $(dirname $(realpath "$0"))/utils
+
+timer_reset "cron"
+timer_reset "systemd-timer"
+load_config "sysconfig.btrfsmaintenance.testall"
+
+$TESTPATH/btrfs-balance.sh > ./results/$TESTNAME.full
+
+cat ./results/$TESTNAME.full | grep -q "Before balance of"
+[ $? != 0 ] && echo "Balance did not run"
+cat ./results/$TESTNAME.full | grep -q "Done,"
+[ $? != 0 ] && echo "Balance did not complete?"
+
+unload_config
diff --git a/test/4-task-defrag.sh b/test/4-task-defrag.sh
new file mode 100755
index 0000000..7b41f66
--- /dev/null
+++ b/test/4-task-defrag.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# Test is the task: defrag
+
+. $(dirname $(realpath "$0"))/utils
+
+timer_reset "cron"
+timer_reset "systemd-timer"
+load_config "sysconfig.btrfsmaintenance.testall"
+
+$TESTPATH/btrfs-defrag.sh > ./results/$TESTNAME.full
+
+unload_config
diff --git a/test/5-task-scrub.sh b/test/5-task-scrub.sh
new file mode 100755
index 0000000..bcb095d
--- /dev/null
+++ b/test/5-task-scrub.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# Test is the task: scrub
+
+. $(dirname $(realpath "$0"))/utils
+
+timer_reset "cron"
+timer_reset "systemd-timer"
+load_config "sysconfig.btrfsmaintenance.testall"
+
+$TESTPATH/btrfs-scrub.sh > ./results/$TESTNAME.full
+
+unload_config
diff --git a/test/6-task-trim.sh b/test/6-task-trim.sh
new file mode 100755
index 0000000..905730e
--- /dev/null
+++ b/test/6-task-trim.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# Test is the task: trim
+
+. $(dirname $(realpath "$0"))/utils
+
+timer_reset "cron"
+timer_reset "systemd-timer"
+load_config "sysconfig.btrfsmaintenance.testall"
+
+$TESTPATH/btrfs-trim.sh > ./results/$TESTNAME.full
+
+unload_config
diff --git a/test/check b/test/check
new file mode 100755
index 0000000..19fc110
--- /dev/null
+++ b/test/check
@@ -0,0 +1,54 @@
+#!/bin/bash
+
+#### Modify as needed #####
+
+# Where is the code under test
+TESTPATH="/usr/share/btrfsmaintenance"
+#TESTPATH="../"
+
+# A btrfs filesystem on which the btrfsmaintenance script shall run.
+SCRATCH_MNT="/mnt/scratch"
+
+verbose=false
+
+###########################
+
+. $(dirname $(realpath "$0"))/utils
+
+do_test()
+{
+	local testcase=$1
+	local testname
+	local should_match_expected=false
+
+	testname=$(echo $testcase | cut -d"." -f1)
+	rm ./results/$testname.out > /dev/null 2>&1
+	rm ./results/$testname.full > /dev/null 2>&1
+
+	. ./$testcase > ./results/$testname.out
+
+	# No expected output file means testcase breaks the silence upon error
+	if [ -f $testname.expected ]; then
+		diff -Z ./results/${testname}.out ./${testname}.expected
+		[ $? != 0 ] && \
+		echo "$testname ..... [Failed]" || \
+		echo "$testname ..... [Passed]"
+	elif [ $(cat ./results/$testname.out | wc -l) != 0 ]; then
+		echo "$testname ..... [Failed: check ./results/$testname.out|full]"
+	else
+		echo "$testname ..... [Passed]"
+	fi
+}
+
+update_btrfs_mnt sysconfig.btrfsmaintenance.testall
+
+if [ ! -z $1 ]; then
+	tests=$*
+else
+	tests=$(ls *.sh | grep -E '^[0-9]')
+fi
+
+for testcase in $tests
+do
+	do_test $testcase
+done
diff --git a/test/results/.full b/test/results/.full
new file mode 100644
index 0000000..f4dc018
--- /dev/null
+++ b/test/results/.full
@@ -0,0 +1,4 @@
+Running fstrim on /mnt/scratch
+fstrim: /mnt/scratch: the discard operation is not supported
+flock: getting lock took 0.000005 seconds
+flock: executing fstrim
diff --git a/test/sysconfig.btrfsmaintenance.testall b/test/sysconfig.btrfsmaintenance.testall
new file mode 100755
index 0000000..c3e5608
--- /dev/null
+++ b/test/sysconfig.btrfsmaintenance.testall
@@ -0,0 +1,21 @@
+BTRFS_SCRUB_MOUNTPOINTS=/mnt/scratch
+BTRFS_DEFRAG_PATHS=/mnt/scratch
+BTRFS_BALANCE_MOUNTPOINTS=/mnt/scratch
+BTRFS_TRIM_MOUNTPOINTS=/mnt/scratch
+
+BTRFS_SCRUB_PERIOD="weekly"
+BTRFS_DEFRAG_PERIOD="monthly"
+BTRFS_BALANCE_PERIOD="weekly"
+BTRFS_TRIM_PERIOD="monthly"
+
+BTRFS_DEFRAG_MIN_SIZE="+1M"
+
+BTRFS_BALANCE_DUSAGE="5 10"
+BTRFS_BALANCE_MUSAGE="5"
+
+BTRFS_SCRUB_PRIORITY="idle"
+BTRFS_SCRUB_READ_ONLY="false"
+
+BTRFS_LOG_OUTPUT="stdout"
+
+BTRFS_ALLOW_CONCURRENCY="false"
diff --git a/test/utils b/test/utils
new file mode 100755
index 0000000..85e6234
--- /dev/null
+++ b/test/utils
@@ -0,0 +1,74 @@
+#!/bin/bash
+
+tell()
+{
+	[ $verbose = true ] && echo $*
+	:
+}
+
+timer_setup()
+{
+	local timertype=$1
+
+	$verbose == true && \
+	$TESTPATH/btrfsmaintenance-refresh-cron.sh $timertype || \
+	$TESTPATH/btrfsmaintenance-refresh-cron.sh $timertype > /dev/null
+}
+
+timer_reset()
+{
+	local timertype=$1
+
+	$verbose = true && \
+	$TESTPATH/btrfsmaintenance-refresh-cron.sh $timertype uninstall || \
+	$TESTPATH/btrfsmaintenance-refresh-cron.sh $timertype uninstall > /dev/null
+}
+
+sysconf_file()
+{
+	if [ -f /etc/sysconfig/btrfsmaintenance ]; then
+		echo "/etc/sysconfig/btrfsmaintenance"
+		return
+	elif [ -f /etc/default/btrfsmaintenance ]; then
+		echo "/etc/default/btrfsmaintenance"
+		return
+	fi
+
+	echo "ERROR: btrfsmaintenance config file is not found"
+	exit 1
+}
+
+load_config()
+{
+	local sys_config=$(sysconf_file)
+	local test_configfile=$1
+
+	if ! [ -f "$test_configfile" ]; then
+	echo "ERROR: config file '$test_configfile' is not found."
+		exit 1
+	fi
+
+	# btrfsmaintenance-refresh-cron.sh and the tasks scripts have configfile
+	# path hard coded. So move our test config file there.
+
+	mv $sys_config ${sys_config}.org
+	cp $test_configfile $sys_config
+}
+
+unload_config()
+{
+	local sys_config=$(sysconf_file)
+
+	mv ${sys_config}.org $sys_config
+}
+
+update_btrfs_mnt()
+{
+	local configfile=$1
+
+	for script in BTRFS_SCRUB_MOUNTPOINTS BTRFS_DEFRAG_PATHS \
+		BTRFS_BALANCE_MOUNTPOINTS BTRFS_TRIM_MOUNTPOINTS
+	do
+		sed -i -E "s,($script=).*,\1$SCRATCH_MNT," $configfile
+	done
+}