From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:48548 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760188AbcCEAih (ORCPT ); Fri, 4 Mar 2016 19:38:37 -0500 Subject: [PATCH 10/12] xfs: test per-ag allocation accounting during truncate-caused refcountbt expansion From: "Darrick J. Wong" To: david@fromorbit.com, darrick.wong@oracle.com Cc: linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, Christoph Hellwig , fstests@vger.kernel.org, xfs@oss.sgi.com Date: Fri, 04 Mar 2016 16:38:22 -0800 Message-ID: <20160305003822.28738.53832.stgit@birch.djwong.org> In-Reply-To: <20160305003717.28738.98818.stgit@birch.djwong.org> References: <20160305003717.28738.98818.stgit@birch.djwong.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-btrfs-owner@vger.kernel.org List-ID: Ensure that refcountbt allocations during truncate operations come from the per-AG reservation and are not charged to the transaction. Reported-by: Christoph Hellwig Signed-off-by: Darrick J. Wong --- tests/xfs/855 | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/855.out | 10 ++++++ tests/xfs/group | 1 + 3 files changed, 106 insertions(+) create mode 100755 tests/xfs/855 create mode 100644 tests/xfs/855.out diff --git a/tests/xfs/855 b/tests/xfs/855 new file mode 100755 index 0000000..93bd286 --- /dev/null +++ b/tests/xfs/855 @@ -0,0 +1,95 @@ +#! /bin/bash +# FS QA Test No. 855 +# +# Ensure that we can create enough distinct reflink entries to force creation +# of a multi-level refcount btree by reflinking a file a number of times and +# truncating the copies at successively lower sizes. Delete and recreate a few +# times to exercise the refcount btree grow/shrink functions. +# +#----------------------------------------------------------------------- +# Copyright (c) 2016, Oracle and/or its affiliates. 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 / + umount $SCRATCH_MNT > /dev/null 2>&1 + rm -rf $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_supported_fs xfs +_require_scratch_reflink +_require_cp_reflink + +rm -f $seqres.full + +_scratch_mkfs >/dev/null 2>&1 +_scratch_mount + +testdir=$SCRATCH_MNT/test-$seq +mkdir $testdir + +echo "Create the original file blocks" +blksz="$(stat -f $testdir -c '%S')" +nr_blks=$((2 * blksz / 12)) + +for i in 1 2 x; do + _pwrite_byte 0x61 0 $((blksz * nr_blks)) $testdir/file1 >> $seqres.full + + echo "$i: Reflink a bunch of times" + seq 1 $nr_blks | while read nr; do + _cp_reflink $testdir/file1 $testdir/file1.$nr >> $seqres.full + done + sync + + echo "$i: Truncate files" + seq 1 $nr_blks | while read nr; do + truncate -s $((blksz * (nr_blks - nr))) $testdir/file1.$nr >> $seqres.full + done + + umount $SCRATCH_MNT + _check_scratch_fs + _scratch_mount + + test $i = "x" && break + + echo "$i: Delete both files" + rm -rf $testdir + mkdir -p $testdir + umount $SCRATCH_MNT + _check_scratch_fs + _scratch_mount +done + +# success, all done +status=0 +exit diff --git a/tests/xfs/855.out b/tests/xfs/855.out new file mode 100644 index 0000000..d196352 --- /dev/null +++ b/tests/xfs/855.out @@ -0,0 +1,10 @@ +QA output created by 855 +Create the original file blocks +1: Reflink a bunch of times +1: Truncate files +1: Delete both files +2: Reflink a bunch of times +2: Truncate files +2: Delete both files +x: Reflink a bunch of times +x: Truncate files diff --git a/tests/xfs/group b/tests/xfs/group index 50353f1..70f422e 100644 --- a/tests/xfs/group +++ b/tests/xfs/group @@ -286,3 +286,4 @@ 305 auto quota 853 auto quick clone 854 auto quick clone +855 auto clone