From patchwork Tue Feb 2 02:44:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 8186091 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 103BA9F3CD for ; Tue, 2 Feb 2016 02:45:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0222F20115 for ; Tue, 2 Feb 2016 02:45:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD569200E3 for ; Tue, 2 Feb 2016 02:44:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751800AbcBBCox (ORCPT ); Mon, 1 Feb 2016 21:44:53 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:50902 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751565AbcBBCov (ORCPT ); Mon, 1 Feb 2016 21:44:51 -0500 X-IronPort-AV: E=Sophos;i="5.20,367,1444665600"; d="scan'208";a="310331" Received: from unknown (HELO cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 02 Feb 2016 10:44:31 +0800 Received: from localhost.localdomain (unknown [10.167.226.34]) by cn.fujitsu.com (Postfix) with ESMTP id C50574056404 for ; Tue, 2 Feb 2016 10:44:25 +0800 (CST) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [RFC PATCH 2/4] fstests: btrfs: Add basic test for btrfs in-band de-duplication Date: Tue, 2 Feb 2016 10:44:17 +0800 Message-Id: <1454381059-27870-3-git-send-email-quwenruo@cn.fujitsu.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1454381059-27870-1-git-send-email-quwenruo@cn.fujitsu.com> References: <1454381059-27870-1-git-send-email-quwenruo@cn.fujitsu.com> MIME-Version: 1.0 X-yoursite-MailScanner-ID: C50574056404.A9315 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: quwenruo@cn.fujitsu.com X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add basic test for btrfs in-band de-duplication, including: 1) Enable 2) Re-enable 3) On disk extents are refering to same bytenr 4) Disable Signed-off-by: Qu Wenruo --- common/defrag | 8 ++++ tests/btrfs/200 | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/200.out | 17 ++++++++ tests/btrfs/group | 1 + 4 files changed, 138 insertions(+) create mode 100755 tests/btrfs/200 create mode 100644 tests/btrfs/200.out diff --git a/common/defrag b/common/defrag index d2b137e..46175f5 100644 --- a/common/defrag +++ b/common/defrag @@ -47,6 +47,14 @@ _extent_count() $XFS_IO_PROG -c "fiemap" $1 | tail -n +2 | grep -v hole | wc -l| $AWK_PROG '{print $1}' } +_uniq_extent_count() +{ + file=$1 + $XFS_IO_PROG -c "fiemap" $file >> $seqres.full 2>&1 + $XFS_IO_PROG -c "fiemap" $file | tail -n +2 | grep -v hole |\ + $AWK_PROG '{print $3}' | sort | uniq | wc -l +} + _check_extent_count() { min=$1 diff --git a/tests/btrfs/200 b/tests/btrfs/200 new file mode 100755 index 0000000..856e1fb --- /dev/null +++ b/tests/btrfs/200 @@ -0,0 +1,112 @@ +#! /bin/bash +# FS QA Test 200 +# +# Basic btrfs inband dedup test, including: +# 1) Enable +# 2) Uniq file extent number +# 3) Re-enable +# 4) Disable +# +#----------------------------------------------------------------------- +# 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.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/defrag + +# remove previous $seqres.full before test +rm -f $seqres.full + +# real QA test starts here + +_supported_fs btrfs +_supported_os Linux +_require_scratch +_need_to_be_root +_require_btrfs_subcommand dedup +_require_btrfs_kernel_feature dedup +_require_btrfs_mkfs_feature dedup + +# File size is twice the maximum file extent of btrfs +# So even fallbacked to non-dedup, it will have at least 2 extents +file_size=$(( 256 * 1024 * 1024 )) + +_scratch_mkfs "-O dedup" >> $seqres.full 2>&1 +_scratch_mount + +do_dedup_test() +{ + backend=$1 + dedup_bs=$2 + _run_btrfs_util_prog dedup enable -s $backend -b $dedup_bs $SCRATCH_MNT + $XFS_IO_PROG -f -c "pwrite -b $dedup_bs 0 $dedup_bs" \ + $SCRATCH_MNT/initial_block | _filter_xfs_io + + # sync to ensure dedup hash is added into dedup pool + sync + $XFS_IO_PROG -f -c "pwrite -b $dedup_bs 0 $file_size" \ + $SCRATCH_MNT/real_file | _filter_xfs_io + # sync again to ensure data are all rewriten to disk + sync + + # Test if real_file is de-duplicated + nr_uniq_extents=$(_uniq_extent_count $SCRATCH_MNT/real_file) + nr_total_extents=$(_extent_count $SCRATCH_MNT/real_file) + + echo "uniq/total: $nr_uniq_extents/$nr_total_extents" >> $seqres.full + # Allow a small amount of dedup miss, as commit interval or + # memory pressure may break a dedup_bs block and cause + # smalll extent which won't go through dedup routine + if [ $nr_uniq_extents -ge $(( $nr_total_extents * 5 / 100 )) ]; then + echo "Too high dedup failure rate" + fi +} + +# Test inmemory dedup first, use 64K dedup bs to keep compatibility +# with 64K page size +do_dedup_test inmemory 64K + +# Test ondisk backend, and re-enable function +do_dedup_test ondisk 64K + +# Test 128K(default) dedup bs +do_dedup_test inmemory 128K +do_dedup_test ondisk 128K + +# Check dedup disable +_run_btrfs_util_prog dedup disable $SCRATCH_MNT + +# success, all done +status=0 +exit diff --git a/tests/btrfs/200.out b/tests/btrfs/200.out new file mode 100644 index 0000000..5197dbc --- /dev/null +++ b/tests/btrfs/200.out @@ -0,0 +1,17 @@ +QA output created by 200 +wrote 65536/65536 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 268435456/268435456 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 65536/65536 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 268435456/268435456 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 131072/131072 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 268435456/268435456 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 131072/131072 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 268435456/268435456 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) diff --git a/tests/btrfs/group b/tests/btrfs/group index de628be..b54ee6e 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -117,3 +117,4 @@ 114 auto qgroup 115 auto qgroup 116 auto quick metadata +200 auto dedup