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[PATCH] xfstests: Add pairing mount options test

To: xfs@xxxxxxxxxxx
Subject: [PATCH] xfstests: Add pairing mount options test
From: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
Date: Wed, 8 Jan 2014 14:30:48 +0800
Cc: Eric Sandeen <sandeen@xxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
Test remount btrfs with different pairing options like barrier and no barrier.

Mainly used to test the following comming btrfs kernel commit:(Not in
mainline yet)
8dd6d2c btrfs: Add treelog mount option.
f1eccd3 btrfs: Add datasum mount option.
aad3269 btrfs: Add datacow mount option.
22bab74 btrfs: Add acl mount option.
170e45e btrfs: Add noflushoncommit mount option.
ce41bc9 btrfs: Add noenospc_debug mount option.
f3c639b btrfs: Add nodiscard mount option.
962cbee btrfs: Add noautodefrag mount option.
0b4fa2a btrfs: Add "barrier" option to support "-o remount,barrier"

Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
Cc: Eric Sandeen <sandeen@xxxxxxxxxx>
---
 tests/btrfs/025     | 125 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/025.out |   2 +
 tests/btrfs/group   |   1 +
 3 files changed, 128 insertions(+)
 create mode 100755 tests/btrfs/025
 create mode 100644 tests/btrfs/025.out

diff --git a/tests/btrfs/025 b/tests/btrfs/025
new file mode 100755
index 0000000..014da19
--- /dev/null
+++ b/tests/btrfs/025
@@ -0,0 +1,125 @@
+#!/bin/bash
+# Btrfs QA test No. 025
+#
+# Check for paired btrfs mount options
+#
+# Regression test for the following btrfs commits
+# 8dd6d2c btrfs: Add treelog mount option.
+# f1eccd3 btrfs: Add datasum mount option.
+# aad3269 btrfs: Add datacow mount option.
+# 22bab74 btrfs: Add acl mount option.
+# 170e45e btrfs: Add noflushoncommit mount option.
+# ce41bc9 btrfs: Add noenospc_debug mount option.
+# f3c639b btrfs: Add nodiscard mount option.
+# 962cbee btrfs: Add noautodefrag mount option.
+# 0b4fa2a btrfs: Add "barrier" option to support "-o remount,barrier"
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2014 Fujitsu, 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.
+#
+# 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"
+
+status=0       # success is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+PAIRING_OPTIONS="autodefrag noautodefrag discard nodiscard enospc_debug 
noenospc_debug flushoncommit noflushoncommit noacl acl nobarrier barrier 
nodatacow datacow nodatasum datasum notreelog treelog space_cache nospace_cache 
ssd nossd"
+
+# options that does not show in mount options
+HIDDEN_OPTIONS="noautodefrag nodiscard noenospc_debug noflushoncommit acl 
barrier datacow datasum treelog nossd"
+_cleanup()
+{
+       rm $tmp.running &> /dev/null
+       wait
+       cd /
+       _scratch_unmount &> /dev/null
+}
+
+# check the mount option
+check_mount_opt()
+{
+       mount_point=$1
+       expected_opt=$2
+
+       mount_opt=`cat /proc/mounts | grep $mount_point | cut -d\  -f4`
+       if grep $2 $mount_opt; then
+               _fail "test failed: expected $expected_opt option not shown in 
mount options"
+       fi
+}
+
+# background noise 
+start_bgnoise()
+{
+       touch $tmp.running
+       while [ -f "$tmp.running" ]; do
+               run_check $FSSTRESS_PROG -d $SCRATCH_MNT -n 500 -p 4
+               if [ $? != 0 ]; then
+                       _fail "Some error happened executing fsstress when 
remounting"
+               fi
+       done &
+       noise_pid=`jobs -p %1`
+       echo $noise_pid > $tmp.running
+}
+
+stop_bgnoise()
+{
+       pid=`cat $tmp.running`
+       rm $tmp.running
+       wait $pid
+}
+
+# get standard environment, filters
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs btrfs
+_supported_os Linux
+
+_need_to_be_root
+_require_scratch
+
+# no need to use the original mount options
+unset MOUNT_OPTIONS
+
+_scratch_mkfs > /dev/null 2>&1
+_scratch_mount
+
+start_bgnoise
+for remount_opt in $PAIRING_OPTIONS; do
+       # Sleep for a while ensuring fsstress to do enough stress
+       sleep 1
+       _remount $SCRATCH_MNT $remount_opt
+       if [ $? != 0 ]; then
+               stop_bgnoise
+               _fail "test failed: $remount_opt not supported"
+       fi
+       if [[ ! $HIDDEN_OPTIONS =~ $remount ]]; then
+               check_mount_opt $SCRATCH_MNT $remount_opt
+                       
+               # Special check for nodatacow
+               if [ $remount_opt == "nodatacow" ]; then
+                       check_mount_opt $SCRATCH_MNT nodatasum
+               fi
+       fi
+done
+stop_bgnoise
+_scratch_unmount || _fail "umount failed"
+echo "Silence is golden"
+status=0; exit
diff --git a/tests/btrfs/025.out b/tests/btrfs/025.out
new file mode 100644
index 0000000..3d70951
--- /dev/null
+++ b/tests/btrfs/025.out
@@ -0,0 +1,2 @@
+QA output created by 025
+Silence is golden
diff --git a/tests/btrfs/group b/tests/btrfs/group
index 87e7bca..1a4dad8 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -27,3 +27,4 @@
 022 auto
 023 auto
 024 auto quick
+025 auto quick
-- 
1.8.5.2

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