From: Jeff Layton Subject: [xfstests PATCH v4 5/5] btrfs: make a btrfs version of writeback error reporting test Date: Mon, 12 Jun 2017 08:42:13 -0400 Message-ID: <20170612124213.14855-6-jlayton@redhat.com> References: <20170612124213.14855-1-jlayton@redhat.com> Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-block@vger.kernel.org To: Andrew Morton , Al Viro , Jan Kara , tytso@mit.edu, axboe@kernel.dk, mawilcox@microsoft.com, ross.zwisler@linux.intel.com, corbet@lwn.net, Chris Mason , Josef Bacik , David Sterba , "Darrick J . Wong" , Eryu Guan , David Howells Return-path: In-Reply-To: <20170612124213.14855-1-jlayton@redhat.com> Sender: owner-linux-mm@kvack.org List-Id: linux-ext4.vger.kernel.org Make a new btrfs/999 test that works the way Chris Mason suggested: Build a filesystem with 2 devices that stripes the data across both devices, but mirrors metadata across both. Then, make one of the devices fail and see how fsync is handled. Signed-off-by: Jeff Layton --- tests/btrfs/999 | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/group | 1 + 2 files changed, 94 insertions(+) create mode 100755 tests/btrfs/999 diff --git a/tests/btrfs/999 b/tests/btrfs/999 new file mode 100755 index 000000000000..84031cc0d913 --- /dev/null +++ b/tests/btrfs/999 @@ -0,0 +1,93 @@ +#! /bin/bash +# FS QA Test No. 999 +# +# Open a file several times, write to it, fsync on all fds and make sure that +# they all return 0. Change the device to start throwing errors. Write again +# on all fds and fsync on all fds. Ensure that we get errors on all of them. +# Then fsync on all one last time and verify that all return 0. +# +#----------------------------------------------------------------------- +# Copyright (c) 2017, Jeff Layton +# +# 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.* $testdir + _dmerror_cleanup +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/dmerror + +# real QA test starts here +_supported_os Linux +_require_dm_target error +_require_test_program fsync-err +_require_test_program dmerror + +# bring up dmerror device +_scratch_unmount +_dmerror_init + +# Replace first device with error-test device +old_SCRATCH_DEV=$SCRATCH_DEV +SCRATCH_DEV_POOL=`echo $SCRATCH_DEV_POOL | perl -pe "s#$SCRATCH_DEV#$DMERROR_DEV#"` +SCRATCH_DEV=$DMERROR_DEV + +_require_scratch +_require_scratch_dev_pool + +rm -f $seqres.full + +echo "Format and mount" + +_scratch_pool_mkfs "-d raid0 -m raid1" > $seqres.full 2>&1 +_scratch_mount + +# How much do we need to write? We need to hit all of the stripes. btrfs uses +# a fixed 64k stripesize, so write enough to hit each one +number_of_devices=`echo $SCRATCH_DEV_POOL | wc -w` +write_kb=$(($number_of_devices * 64)) +_require_fs_space $SCRATCH_MNT $write_kb + +testfile=$SCRATCH_MNT/fsync-err-test + +SCRATCH_DEV=$old_SCRATCH_DEV +$here/src/fsync-err -b $(($write_kb * 1024)) -d $here/src/dmerror $testfile + +# success, all done +_dmerror_load_working_table + +# fs may be corrupt after this -- attempt to repair it +_repair_scratch_fs >> $seqres.full + +# remove dmerror device +_dmerror_cleanup + +status=0 +exit diff --git a/tests/btrfs/group b/tests/btrfs/group index 6f19619e877c..8dbdfbfe29fd 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -145,3 +145,4 @@ 141 auto quick 142 auto quick 143 auto quick +999 auto quick -- 2.13.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org