From patchwork Tue Mar 10 07:46:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 5974361 Return-Path: X-Original-To: patchwork-fstests@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 DF77F9F318 for ; Tue, 10 Mar 2015 07:48:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EC8C420225 for ; Tue, 10 Mar 2015 07:48:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E925420142 for ; Tue, 10 Mar 2015 07:48:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751709AbbCJHsj (ORCPT ); Tue, 10 Mar 2015 03:48:39 -0400 Received: from cn.fujitsu.com ([59.151.112.132]:54621 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751024AbbCJHsi (ORCPT ); Tue, 10 Mar 2015 03:48:38 -0400 X-IronPort-AV: E=Sophos;i="5.04,848,1406563200"; d="scan'208";a="71793017" Received: from localhost (HELO edo.cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 10 Mar 2015 15:44:56 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (localhost.localdomain [127.0.0.1]) by edo.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id t2A7leNQ020520; Tue, 10 Mar 2015 15:47:40 +0800 Received: from localhost.localdomain (10.167.226.33) by G08CNEXCHPEKD02.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.181.6; Tue, 10 Mar 2015 15:48:40 +0800 From: Qu Wenruo To: , CC: Subject: [PATCH] fstest: btrfs/083: Test for incorrect exclusive refernce number after file clone. Date: Tue, 10 Mar 2015 15:46:34 +0800 Message-ID: <1425973594-31936-1-git-send-email-quwenruo@cn.fujitsu.com> X-Mailer: git-send-email 2.3.1 MIME-Version: 1.0 X-Originating-IP: [10.167.226.33] Sender: fstests-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP [Problem] Since commit fcebe4562dec83b3f8d308 ("Btrfs: rework qgroup accounting"), quota data update is delayed after delayed_ref calculation, and lacks correct protection to detect root reference which shouldn't be counted in current sequence number but already written into extent backref. This makes exclusive reference not decreased correctly and give incorrect result. [Test procedure] 1. Create a btrfs with 3 subvolumes, quota enabled and rescanned. 2. Create a file in 1st subvolume 3. Clone the file to 2nd and 3rd subvolume 4. Sync the fs to reflect the changes in qgroup. 5. Check the qgroup data [Expected result] None of the subvolume has exclusive reference to the file. [Actual result] The first subvolume still have exclusive reference to the file. Signed-off-by: Qu Wenruo --- tests/btrfs/083 | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/083.out | 5 ++++ tests/btrfs/group | 1 + 3 files changed, 82 insertions(+) create mode 100755 tests/btrfs/083 create mode 100644 tests/btrfs/083.out diff --git a/tests/btrfs/083 b/tests/btrfs/083 new file mode 100755 index 0000000..17fd30b --- /dev/null +++ b/tests/btrfs/083 @@ -0,0 +1,76 @@ +#! /bin/bash +# FS QA Test No. 083 +# +# Test for incorrect exclusive reference count after cloning file +# between subvolumes. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015 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() +{ + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter + +# real QA test starts here + +# Modify as appropriate. +_need_to_be_root +_supported_fs btrfs +_supported_os Linux +_require_scratch +_require_cp_reflink + +run_check _scratch_mkfs "--nodesize 4096" + +# inode cache will also take space in fs tree, disable them to get consistent +# result. +run_check _scratch_mount "-o noinode_cache" + +_run_btrfs_util_prog subvolume create $SCRATCH_MNT/subv1 +_run_btrfs_util_prog subvolume create $SCRATCH_MNT/subv2 +_run_btrfs_util_prog subvolume create $SCRATCH_MNT/subv3 + +_run_btrfs_util_prog quota enable $SCRATCH_MNT +_run_btrfs_util_prog quota rescan -w $SCRATCH_MNT + +dd if=/dev/zero of=$SCRATCH_MNT/subv1/file1 bs=4K count=64 &> /dev/null +cp --reflink $SCRATCH_MNT/subv1/file1 $SCRATCH_MNT/subv2/file1 +cp --reflink $SCRATCH_MNT/subv1/file1 $SCRATCH_MNT/subv3/file1 +_run_btrfs_util_prog filesystem sync $SCRATCH_MNT + +units=`_btrfs_qgroup_units` +$BTRFS_UTIL_PROG qgroup show $units $SCRATCH_MNT | $SED_PROG -n '/[0-9]/p' \ + | $AWK_PROG '{print $2" "$3}' + +# success, all done +status=0 +exit diff --git a/tests/btrfs/083.out b/tests/btrfs/083.out new file mode 100644 index 0000000..359b4a0 --- /dev/null +++ b/tests/btrfs/083.out @@ -0,0 +1,5 @@ +QA output created by 083 +4096 4096 +266240 4096 +266240 4096 +266240 4096 diff --git a/tests/btrfs/group b/tests/btrfs/group index fd2fa76..04d5d67 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -85,3 +85,4 @@ 080 auto snapshot 081 auto quick clone 082 auto quick remount +083 auto quick qgroup