From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([222.73.24.84]:34937 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755214AbcINBzp (ORCPT ); Tue, 13 Sep 2016 21:55:45 -0400 From: Qu Wenruo Subject: [PATCH v6 5/6] fstests: btrfs: Add testcase for btrfs dedupe and metadata balance race test Date: Wed, 14 Sep 2016 09:55:26 +0800 Message-Id: <20160914015527.10274-6-quwenruo@cn.fujitsu.com> In-Reply-To: <20160914015527.10274-1-quwenruo@cn.fujitsu.com> References: <20160914015527.10274-1-quwenruo@cn.fujitsu.com> MIME-Version: 1.0 Sender: fstests-owner@vger.kernel.org To: linux-btrfs@vger.kernel.org, fstests@vger.kernel.org Cc: fdmanana@gmail.com, mfasheh@suse.de List-ID: Btrfs balance with inband dedupe enable/disable will expose a lot of hidden dedupe bug: 1) Enable/disable race bug 2) Btrfs dedupe tree balance corrupted delayed_ref 3) Btrfs disable and balance will cause balance BUG_ON Reported-by: Satoru Takeuchi Signed-off-by: Qu Wenruo --- tests/btrfs/201 | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/201.out | 2 + tests/btrfs/group | 1 + 3 files changed, 115 insertions(+) create mode 100755 tests/btrfs/201 create mode 100644 tests/btrfs/201.out diff --git a/tests/btrfs/201 b/tests/btrfs/201 new file mode 100755 index 0000000..152e9f7 --- /dev/null +++ b/tests/btrfs/201 @@ -0,0 +1,112 @@ +#! /bin/bash +# FS QA Test 201 +# +# Btrfs inband dedup enable/disable race with metadata balance +# +# This tests will test the following bugs exposed in development: +# 1) enable/disable race +# 2) tree balance cause delayed ref corruption +# 3) disable and balance cause BUG_ON +# +#----------------------------------------------------------------------- +# 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 $trigger_pid &> /dev/null + kill $balance_pid &> /dev/null + wait + + # See comment later + $BTRFS_UTIL_PROG balance cancel $SCRATCH_MNT &> /dev/null +} + +# 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 dedupe +_require_btrfs_fs_feature dedupe + +# Use 64K dedupe size to keep compatibility for 64K page size +dedupe_bs=64K + +_scratch_mkfs >> $seqres.full 2>&1 +_scratch_mount + +mkdir -p $SCRATCH_MNT/stressdir + +runtime=$((60 * $TIME_FACTOR)) + +trigger_work() +{ + while true; do + _run_btrfs_util_prog dedupe enable -f -s inmemory \ + -b $dedupe_bs $SCRATCH_MNT + sleep 1 + _run_btrfs_util_prog dedupe disable $SCRATCH_MNT + sleep 1 + done +} + +# redirect all output, as error output like 'balance cancelled by user' +# will populuate the golden output. +_btrfs_stress_balance -m $SCRATCH_MNT &> /dev/null & +balance_pid=$! + +$FSSTRESS_PROG $(_scale_fsstress_args -p 1 -n 10000000) $FSSTRESS_AVOID \ + -d $SCRATCH_MNT/stressdir > /dev/null 2>&1 & + +trigger_work & +trigger_pid=$! + +sleep $runtime +killall $FSSTRESS_PROG &> /dev/null +kill $trigger_pid &> /dev/null +kill $balance_pid &> /dev/null +wait + +# Manually stop balance as it's possible balance is still running for a short +# time. And we don't want to populate $seqres.full, so call $BTRFS_UTIL_PROG +# directly +$BTRFS_UTIL_PROG balance cancel $SCRATCH_MNT &> /dev/null + +echo "Silence is golden" +# success, all done +status=0 +exit diff --git a/tests/btrfs/201.out b/tests/btrfs/201.out new file mode 100644 index 0000000..5ac973f --- /dev/null +++ b/tests/btrfs/201.out @@ -0,0 +1,2 @@ +QA output created by 201 +Silence is golden diff --git a/tests/btrfs/group b/tests/btrfs/group index ea9c36b..2e539d0 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -134,3 +134,4 @@ 129 auto quick send 130 auto clone send 200 auto ib-dedupe +201 auto ib-dedupe -- 2.7.4