mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Jeff Layton
5d599421de
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 <clm@fb.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
98 lines
2.8 KiB
Bash
Executable File
98 lines
2.8 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 146
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#
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# Open a file several times, write to it, fsync on all fds and make sure that
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# they all return 0. Change the device to start throwing errors. Write again
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# on all fds and fsync on all fds. Ensure that we get errors on all of them.
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# Then fsync on all one last time and verify that all return 0.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2017, Jeff Layton <jlayton@redhat.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf $tmp.* $testdir
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_dmerror_cleanup
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/dmerror
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# real QA test starts here
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_supported_os Linux
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_supported_fs btrfs
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_require_dm_target error
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_require_test_program fsync-err
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_require_test_program dmerror
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# bring up dmerror device
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_scratch_unmount
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_dmerror_init
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# Replace first device with error-test device
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old_SCRATCH_DEV=$SCRATCH_DEV
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SCRATCH_DEV_POOL=`echo $SCRATCH_DEV_POOL | perl -pe "s#$SCRATCH_DEV#$DMERROR_DEV#"`
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SCRATCH_DEV=$DMERROR_DEV
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_require_scratch
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_require_scratch_dev_pool
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rm -f $seqres.full
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echo "Format and mount"
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# Build a filesystem with 2 devices that stripes the data across
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# both devices, but mirrors metadata across both. Then, make one
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# of the devices fail and test what it does.
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_scratch_pool_mkfs "-d raid0 -m raid1" > $seqres.full 2>&1
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_scratch_mount
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# How much do we need to write? We need to hit all of the stripes. btrfs uses
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# a fixed 64k stripesize, so write enough to hit each one
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number_of_devices=`echo $SCRATCH_DEV_POOL | wc -w`
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write_kb=$(($number_of_devices * 64))
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_require_fs_space $SCRATCH_MNT $write_kb
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testfile=$SCRATCH_MNT/fsync-err-test
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SCRATCH_DEV=$old_SCRATCH_DEV
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$here/src/fsync-err -b $(($write_kb * 1024)) -d $here/src/dmerror $testfile
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# success, all done
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_dmerror_load_working_table
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# fs may be corrupt after this -- attempt to repair it
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_repair_scratch_fs >> $seqres.full
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# remove dmerror device
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_dmerror_cleanup
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status=0
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exit
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