From patchwork Wed Oct 7 05:14:25 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 7342571 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 696959F1B9 for ; Wed, 7 Oct 2015 05:15:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D140120266 for ; Wed, 7 Oct 2015 05:15:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4B1882026C for ; Wed, 7 Oct 2015 05:15:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753251AbbJGFOl (ORCPT ); Wed, 7 Oct 2015 01:14:41 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:40939 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753187AbbJGFOj (ORCPT ); Wed, 7 Oct 2015 01:14:39 -0400 Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t975EXG6021445 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 7 Oct 2015 05:14:34 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0021.oracle.com (8.13.8/8.13.8) with ESMTP id t975EXNi008081 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Wed, 7 Oct 2015 05:14:33 GMT Received: from abhmp0007.oracle.com (abhmp0007.oracle.com [141.146.116.13]) by userv0122.oracle.com (8.13.8/8.13.8) with ESMTP id t975EXh2027269; Wed, 7 Oct 2015 05:14:33 GMT Received: from localhost (/24.21.154.84) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 06 Oct 2015 22:14:32 -0700 Subject: [PATCH 12/12] reflink: test that CoW writes fail when we're out of space From: "Darrick J. Wong" To: david@fromorbit.com, darrick.wong@oracle.com Cc: Anna.Schumaker@netapp.com, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, fstests@vger.kernel.org, xfs@oss.sgi.com Date: Tue, 06 Oct 2015 22:14:25 -0700 Message-ID: <20151007051425.3260.73646.stgit@birch.djwong.org> In-Reply-To: <20151007051257.3260.73072.stgit@birch.djwong.org> References: <20151007051257.3260.73072.stgit@birch.djwong.org> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@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=unavailable 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 Ensure that copy-on-writing a reflinked file when there's no free disk space reflects the desired ENOSPC back to userspace during the write call. Tests the buffered IO, direct IO, and mmap write paths. Signed-off-by: Darrick J. Wong --- tests/generic/842 | 110 ++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/842.out | 10 ++++ tests/generic/843 | 110 ++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/843.out | 10 ++++ tests/generic/844 | 112 +++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/844.out | 9 ++++ tests/generic/845 | 110 ++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/845.out | 10 ++++ tests/generic/group | 4 ++ 9 files changed, 485 insertions(+) create mode 100755 tests/generic/842 create mode 100644 tests/generic/842.out create mode 100755 tests/generic/843 create mode 100644 tests/generic/843.out create mode 100755 tests/generic/844 create mode 100644 tests/generic/844.out create mode 100755 tests/generic/845 create mode 100644 tests/generic/845.out -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/tests/generic/842 b/tests/generic/842 new file mode 100755 index 0000000..9e46b6e --- /dev/null +++ b/tests/generic/842 @@ -0,0 +1,110 @@ +#! /bin/bash +# FS QA Test No. 842 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via the page cache. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, 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 / + rm -rf $tmp.* $TESTDIR1 +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr + +# real QA test starts here +_require_scratch +_require_scratch_reflink +_supported_os Linux + +_require_xfs_io_command "reflink" +_require_cp_reflink + +rm -f $seqres.full + +echo "Format and mount" +_scratch_mkfs > $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 + +TESTDIR=$SCRATCH_MNT/test-$seq +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f $TESTDIR -c '%S')" +NR_BLKS=10240 +umount $SCRATCH_MNT +SZ_BYTES="$((NR_BLKS * 8 * BLKSZ))" +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Create a big file and reflink it" +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile >> $seqres.full 2>&1 +cp --reflink=always $TESTDIR/bigfile $TESTDIR/clonefile +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' $TESTDIR)" +touch $TESTDIR/file0 $TESTDIR/file1 +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_FREE))" $TESTDIR/eat_my_space >> $seqres.full 2>&1 +sync + +echo "CoW the big file" +out="$($XFS_IO_PROG -f -c "pwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +test "$(echo "${out}" | grep -c "No space left on device")" -eq 1 || echo "CoW should have failed with ENOSPC" +echo "${out}" >> $seqres.full 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +umount $SCRATCH_MNT +_scratch_mount + +out="$($XFS_IO_PROG -f -c "pwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +test "$(echo "${out}" | grep -c "No space left on device")" -eq 1 || echo "CoW should have failed with ENOSPC" +echo "${out}" >> $seqres.full 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount $SCRATCH_MNT +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/842.out b/tests/generic/842.out new file mode 100644 index 0000000..df58025 --- /dev/null +++ b/tests/generic/842.out @@ -0,0 +1,10 @@ +QA output created by 842 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/843 b/tests/generic/843 new file mode 100755 index 0000000..9349af1 --- /dev/null +++ b/tests/generic/843 @@ -0,0 +1,110 @@ +#! /bin/bash +# FS QA Test No. 843 +# +# Reflink a file that uses more than half the space, then try to run out of +# space while copy-on-writing. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, 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 / + rm -rf $tmp.* $TESTDIR1 +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr + +# real QA test starts here +_require_scratch +_require_scratch_reflink +_supported_os Linux + +_require_xfs_io_command "reflink" +_require_cp_reflink + +rm -f $seqres.full + +echo "Format and mount" +_scratch_mkfs > $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 + +TESTDIR=$SCRATCH_MNT/test-$seq +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f $TESTDIR -c '%S')" +NR_BLKS=10240 +umount $SCRATCH_MNT +SZ_BYTES="$((NR_BLKS * 3 / 2 * BLKSZ))" +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Create a big file and reflink it" +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile >> $seqres.full 2>&1 +cp --reflink=always $TESTDIR/bigfile $TESTDIR/clonefile +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' $TESTDIR)" +touch $TESTDIR/file0 $TESTDIR/file1 +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_FREE))" $TESTDIR/eat_my_space >> $seqres.full 2>&1 +sync + +echo "CoW the big file" +out="$($XFS_IO_PROG -f -c "pwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +test "$(echo "${out}" | grep -c "No space left on device")" -eq 1 || echo "CoW should have failed with ENOSPC" +echo "${out}" >> $seqres.full 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +umount $SCRATCH_MNT +_scratch_mount + +out="$($XFS_IO_PROG -f -c "pwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +test "$(echo "${out}" | grep -c "No space left on device")" -eq 1 || echo "CoW should have failed with ENOSPC" +echo "${out}" >> $seqres.full 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount $SCRATCH_MNT +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/843.out b/tests/generic/843.out new file mode 100644 index 0000000..43c1cf6 --- /dev/null +++ b/tests/generic/843.out @@ -0,0 +1,10 @@ +QA output created by 843 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/844 b/tests/generic/844 new file mode 100755 index 0000000..ee834b3 --- /dev/null +++ b/tests/generic/844 @@ -0,0 +1,112 @@ +#! /bin/bash +# FS QA Test No. 844 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via mmap. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, 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 / + rm -rf $tmp.* $TESTDIR1 +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr + +# real QA test starts here +_require_scratch +_require_scratch_reflink +_supported_os Linux + +_require_xfs_io_command "reflink" +_require_cp_reflink + +rm -f $seqres.full + +echo "Format and mount" +_scratch_mkfs > $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 + +TESTDIR=$SCRATCH_MNT/test-$seq +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f $TESTDIR -c '%S')" +NR_BLKS=10240 +umount $SCRATCH_MNT +SZ_BYTES="$((NR_BLKS * 8 * BLKSZ))" +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Create a big file and reflink it" +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile >> $seqres.full 2>&1 +cp --reflink=always $TESTDIR/bigfile $TESTDIR/clonefile +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' $TESTDIR)" +touch $TESTDIR/file0 $TESTDIR/file1 +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_FREE))" $TESTDIR/eat_my_space >> $seqres.full 2>&1 +sync + +echo "mmap CoW the big file" +out="$($XFS_IO_PROG -f -c "mmap -rw 0 $((BLKSZ * NR_BLKS))" -c "mwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +err="$?" +if [ "$err" -lt 128 ]; then + echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)" +fi +sync + +echo "Remount and try CoW again" +umount $SCRATCH_MNT +_scratch_mount + +out="$($XFS_IO_PROG -f -c "pwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +test "$(echo "${out}" | grep -c "No space left on device")" -eq 1 || echo "CoW should have failed with ENOSPC" +echo "${out}" >> $seqres.full 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount $SCRATCH_MNT +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/844.out b/tests/generic/844.out new file mode 100644 index 0000000..f74f5bf --- /dev/null +++ b/tests/generic/844.out @@ -0,0 +1,9 @@ +QA output created by 844 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +mmap CoW the big file +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/845 b/tests/generic/845 new file mode 100755 index 0000000..5587687 --- /dev/null +++ b/tests/generic/845 @@ -0,0 +1,110 @@ +#! /bin/bash +# FS QA Test No. 845 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via direct-io. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, 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 / + rm -rf $tmp.* $TESTDIR1 +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr + +# real QA test starts here +_require_scratch +_require_scratch_reflink +_supported_os Linux + +_require_xfs_io_command "reflink" +_require_cp_reflink + +rm -f $seqres.full + +echo "Format and mount" +_scratch_mkfs > $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 + +TESTDIR=$SCRATCH_MNT/test-$seq +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f $TESTDIR -c '%S')" +NR_BLKS=10240 +umount $SCRATCH_MNT +SZ_BYTES="$((NR_BLKS * 8 * BLKSZ))" +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 +rm -rf $TESTDIR +mkdir $TESTDIR + +echo "Create a big file and reflink it" +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile >> $seqres.full 2>&1 +cp --reflink=always $TESTDIR/bigfile $TESTDIR/clonefile +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' $TESTDIR)" +touch $TESTDIR/file0 $TESTDIR/file1 +$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((BLKSZ * NR_FREE))" $TESTDIR/eat_my_space >> $seqres.full 2>&1 +sync + +echo "CoW the big file" +out="$($XFS_IO_PROG -d -f -c "pwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +test "$(echo "${out}" | grep -c "No space left on device")" -eq 1 || echo "CoW should have failed with ENOSPC" +echo "${out}" >> $seqres.full 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +umount $SCRATCH_MNT +_scratch_mount + +out="$($XFS_IO_PROG -f -c "pwrite -S 0x62 0 $((BLKSZ * NR_BLKS))" $TESTDIR/bigfile 2>&1)" +test "$(echo "${out}" | grep -c "No space left on device")" -eq 1 || echo "CoW should have failed with ENOSPC" +echo "${out}" >> $seqres.full 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount $SCRATCH_MNT +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/845.out b/tests/generic/845.out new file mode 100644 index 0000000..d367a73 --- /dev/null +++ b/tests/generic/845.out @@ -0,0 +1,10 @@ +QA output created by 845 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/group b/tests/generic/group index d4f05a9..2ff60a8 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -248,3 +248,7 @@ 839 auto quick clone 840 clone_stress 841 clone_stress +842 auto quick dangerous_clone +843 auto quick dangerous_clone +844 auto quick dangerous_clone +845 auto quick dangerous_clone