From: Jeff Layton Date: Fri, 16 Jun 2017 19:36:19 +0000 (-0400) Subject: btrfs: make a btrfs version of writeback error reporting test X-Git-Tag: v2022.05.01~2006 X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=5d599421defe96b9c604d6e3f9fc23d81eb3b4d0;p=xfstests-dev.git btrfs: make a btrfs version of writeback error reporting test For btrfs, we can test how it reports data writeback errors on fsync by implementing a suggestion from Chris Mason: 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 test what it does. [eguan: add comments about creating btrfs with "-d raid0 -m raid1"] Cc: Chris Mason Signed-off-by: Jeff Layton Reviewed-by: Eryu Guan Signed-off-by: Eryu Guan --- diff --git a/tests/btrfs/146 b/tests/btrfs/146 new file mode 100755 index 00000000..7071c128 --- /dev/null +++ b/tests/btrfs/146 @@ -0,0 +1,97 @@ +#! /bin/bash +# FS QA Test No. 146 +# +# 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.* $testdir + _dmerror_cleanup +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/dmerror + +# real QA test starts here +_supported_os Linux +_supported_fs btrfs +_require_dm_target error +_require_test_program fsync-err +_require_test_program dmerror + +# bring up dmerror device +_scratch_unmount +_dmerror_init + +# Replace first device with error-test device +old_SCRATCH_DEV=$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" + +# 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 test what it does. +_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/146.out b/tests/btrfs/146.out new file mode 100644 index 00000000..ccb38dde --- /dev/null +++ b/tests/btrfs/146.out @@ -0,0 +1,3 @@ +QA output created by 146 +Format and mount +Test passed! diff --git a/tests/btrfs/group b/tests/btrfs/group index 629919b2..f74f50ca 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -148,3 +148,4 @@ 143 auto quick 144 auto quick send 145 auto quick send +146 auto quick