new file mode 100755
@@ -0,0 +1,98 @@
+#! /bin/bash
+# FS QA Test 201
+#
+# Basic btrfs inband dedup enable/disable race test
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016 Fujitsu. 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
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+ killall $FSSTRESS_PROG &> /dev/null
+ kill $fsstress_pid &> /dev/null
+ wait
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+_require_btrfs_subcommand dedup
+_require_btrfs_fs_feature dedup
+_require_btrfs_mkfs_feature dedup
+
+# Use 64K dedup size to keep compatibility for 64K page size
+dedup_bs=64K
+
+_scratch_mkfs "-O dedup" >> $seqres.full 2>&1
+_scratch_mount
+
+mkdir -p $SCRATCH_MNT/stressdir
+
+runtime=$((60 * $TIME_FACTOR))
+
+trigger_work()
+{
+ while true; do
+ _run_btrfs_util_prog dedup enable -s inmemory \
+ -b $dedup_bs $SCRATCH_MNT
+ sleep 5
+ _run_btrfs_util_prog dedup disable $SCRATCH_MNT
+ sleep 5
+ _run_btrfs_util_prog dedup enable -s ondisk \
+ -b $dedup_bs $SCRATCH_MNT
+ sleep 5
+ _run_btrfs_util_prog dedup disable $SCRATCH_MNT
+ sleep 5
+ done
+}
+
+$FSSTRESS_PROG $(_scale_fsstress_args -p 8 -n 10000000) $FSSTRESS_AVOID \
+ -d $SCRATCH_MNT/stressdir > /dev/null 2>&1 &
+
+trigger_work &
+trigger_pid=$!
+
+sleep $runtime
+killall $FSSTRESS_PROG
+kill $trigger_pid
+wait
+
+echo "Silence is golden"
+# success, all done
+status=0
+exit
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@@ -0,0 +1,2 @@
+QA output created by 201
+Silence is golden
@@ -120,3 +120,4 @@
117 auto quick send clone
118 auto quick snapshot metadata
200 auto dedup
+201 auto dedup
Add test case to check btrfs dedup enable/disable race. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> --- tests/btrfs/201 | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/201.out | 2 ++ tests/btrfs/group | 1 + 3 files changed, 101 insertions(+) create mode 100755 tests/btrfs/201 create mode 100644 tests/btrfs/201.out