mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Dave Chinner
cf89aed924
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
75 lines
1.6 KiB
Bash
Executable File
75 lines
1.6 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2010 Red Hat, Inc. All Rights Reserved.
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#
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# FS QA Test No. 247
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#
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# Test for race between direct I/O and mmap
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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 7 15
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_cleanup()
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{
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cd /
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rm -f $tmp.* $testfile
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wait
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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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# real QA test starts here
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# Modify as appropriate.
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_supported_fs generic
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_supported_os Linux
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_require_test
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# this test leaves a 512MB file around if we abort the test during the run via a
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# reboot or kernel panic. Hence just name the file $seq so that we can always
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# clean up on the next run and not leave large stale files around on the testdir
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# that can lead to ENOSPC issues over time.
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testfile=$TEST_DIR/$seq
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rm -f $testfile
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loops=500
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iosize=1048576
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# Initialise file
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dd if=/dev/zero of=$testfile bs=$iosize count=$loops &> /dev/null
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[ $? -ne 0 ] && exit
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sync
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# Direct I/O overwriter
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dd if=/dev/zero of=$testfile oflag=direct bs=$iosize count=$loops conv=notrunc &> /dev/null &
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[ $? -ne 0 ] && exit
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# Mmap writer
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start=`expr $loops - 1`
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for i in `seq $start -1 0`
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do
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offset=`expr $i \* $iosize`
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$XFS_IO_PROG -f -c "mmap -w $offset $iosize" -c "mwrite $offset $iosize" $testfile
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[ $? -ne 0 ] && exit
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done
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wait
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echo "Silence is golden."
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# unmount and check dmesg, filtering out expected warnings about mixed
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# mmap/dio
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_test_unmount
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_check_dmesg _filter_aiodio_dmesg
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status=$?
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exit
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