Run DIO, fallocate and truncate threads on a common file in parallel. If race exist old dio request may rewrite blocks after it was allocated to another file, we will catch that by verifying blocks content. this patch known to catch deadlock for ext4 http://lists.openwall.net/linux-ext4/2012/09/06/3 Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx> --- 286 | 153 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 286.out | 5 ++ group | 1 + 3 files changed, 159 insertions(+), 0 deletions(-) create mode 100755 286 create mode 100644 286.out diff --git a/286 b/286 new file mode 100755 index 0000000..beb9546 --- /dev/null +++ b/286 @@ -0,0 +1,153 @@ +#! /bin/bash +# FSQA Test No. 286 +# +# Test various aio dio vs truncate +# +#----------------------------------------------------------------------- +# Copyright (c) 2006 Silicon Graphics, Inc. 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 +# +#----------------------------------------------------------------------- +# +# creator +owner=dmonakhov@xxxxxxxxxx + +seq=`basename $0` +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter +run_check() +{ + echo "# $@" >> $seq.full 2>&1 + "$@" >> $seq.full 2>&1 || _fail "failed: '$@'" +} + + +NUM_JOBS=$((4*LOAD_FACTOR)) +BLK_DEV_SIZE=`blockdev --getsz $SCRATCH_DEV` +FILE_SIZE=$((BLK_DEV_SIZE * 512)) + +cat >$tmp-$seq.fio <<EOF +########### +# $seq test fio activity +[global] +ioengine=libaio +bs=128k +directory=${SCRATCH_MNT} +filesize=${FILE_SIZE} +size=999G +iodepth=128*${LOAD_FACTOR} +continue_on_error=write +ignore_error=,ENOSPC +error_dump=0 +create_on_open=1 +fallocate=none +exitall=1 + +## Perform direct aio, to files which may be truncated +## by external task +[direct_aio] +direct=1 +buffered=0 +numjobs=${NUM_JOBS} +rw=randwrite +runtime=100*${TIME_FACTOR} +time_based + +# Perform direct aio and verify data +[aio-dio-verifier] +numjobs=1 +verify=crc32c-intel +verify_fatal=1 +verify_dump=1 +verify_backlog=1024 +verify_async=4 +verifysort=1 +direct=1 +bs=4k +rw=randrw +filename=aio-dio-verifier + +# Perform buffered aio and verify data +[buffered-aio-verifier] +numjobs=1 +verify=crc32c-intel +verify_fatal=1 +verify_dump=1 +verify_backlog=1024 +verify_async=4 +verifysort=1 +direct=0 +buffered=1 +bs=4k +rw=randrw +filename=buffered-aio-verifier +EOF + +_workout() +{ + echo "" + echo "Run fio with random aio-dio pattern" + echo "" + cat $tmp-$seq.fio >> $seq.full + run_check $FIO_PROG $tmp-$seq.fio >> $seq.full & + pid=$! + echo "Start fallocate/truncate loop" + for ((i=0; ; i++)) + do + for ((k=1; k <= NUM_JOBS; k++)) + do + fallocate -l $FILE_SIZE $SCRATCH_MNT/direct_aio.$k.0 \ + >> $seq.full 2>&1 + done + for ((k=1; k <= NUM_JOBS; k++)) + do + truncate -s 0 $SCRATCH_MNT/direct_aio.$k.0 + done + # One fio exit we can stop fallocate/truncate loop + kill -0 $pid > /dev/null 2>&1 || break + done + wait $pid +} + +# real QA test starts here +_supported_fs generic +_supported_os Linux +_need_to_be_root +_require_scratch + +_scratch_mkfs >> $seq.full 2>&1 +_scratch_mount + +if ! _workout; then + umount $SCRATCH_DEV 2>/dev/null + exit +fi + +if ! _scratch_unmount; then + echo "failed to umount" + status=1 + exit +fi +_check_scratch_fs +status=$? +exit diff --git a/286.out b/286.out new file mode 100644 index 0000000..d721996 --- /dev/null +++ b/286.out @@ -0,0 +1,5 @@ +QA output created by 286 + +Run fio with random aio-dio pattern + +Start fallocate/truncate loop diff --git a/group b/group index 697269b..2469f80 100644 --- a/group +++ b/group @@ -404,3 +404,4 @@ deprecated 283 dump ioctl auto quick 284 auto 285 auto dump quota quick +286 auto rw enospc aio -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
