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https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Eryu Guan
eea42b998d
Right now generic/072 scales the loop count based on the cpu count. But on hosts with many cpus(100+), generic/072 runs for hours and generates very high system load. Given that the original bug can be reproduced easily on unpatched kernel, the great number of loops and long run time are not needed. So limiting the cpu number to 8 (which gives around 20 seconds run time on my test vm with 8 vcpus) seems reasonable. Signed-off-by: Eryu Guan <eguan@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
75 lines
2.1 KiB
Bash
Executable File
75 lines
2.1 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 072
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#
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# Test truncate/collapse range race.
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# And this test is also a regression test for kernel commit 23fffa9,
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# fs: move falloc collapse range check into the filesystem methods
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# If the race occurs, it will trigger a BUG_ON().
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015 Fujitsu. All Rights Reserved.
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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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#
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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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_cleanup()
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{
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rm -f $tmp.*
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_os Linux
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_supported_fs generic
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_require_test
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_require_xfs_io_command "fcollapse"
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testfile=$TEST_DIR/testfile.$seq
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NCPUS=`$here/src/feature -o`
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# cap NCPUS to 8 at maximum to avoid long run time on hosts with many cpus
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if [ $NCPUS -gt 8 ]; then
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NCPUS=8
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fi
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OUTER_LOOPS=$((10 * $NCPUS * $LOAD_FACTOR))
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INNER_LOOPS=$((50 * $NCPUS * $LOAD_FACTOR))
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# fcollapse/truncate continuously and simultaneously a same file
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for ((i=1; i <= OUTER_LOOPS; i++)); do
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for ((i=1; i <= INNER_LOOPS; i++)); do
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$XFS_IO_PROG -f -c 'truncate 100k' \
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-c 'fcollapse 0 16k' $testfile > /dev/null 2>&1
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done &
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for ((i=1; i <= INNER_LOOPS; i++)); do
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$XFS_IO_PROG -f -c 'truncate 0' $testfile > /dev/null 2>&1
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done &
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done
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wait
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echo "Silence is golden"
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status=0
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exit
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