mirror of
https://github.com/linux-apfs/apfstests.git
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83 lines
2.0 KiB
Bash
83 lines
2.0 KiB
Bash
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#! /bin/bash
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# FS QA Test 438
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#
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# This is a regression test for kernel patch
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# "ext4: Fix data corruption for mmap writes"
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#
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# The problem this test checks for is when too much is zeroed in the tail
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# page that gets written out just while the file gets extended and written
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# to through mmap.
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#
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# Based on test program by Michael Zimmer <michael@swarm64.com>
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2017 SUSE. 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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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 -f $tmp.*
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rm -f $FILE
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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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# remove previous $seqres.full before test
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rm -f $seqres.full
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# Modify as appropriate.
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_supported_fs generic
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_supported_os Linux
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_require_test
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_require_test_program "t_mmap_fallocate"
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# real QA test starts here
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FILE=$TEST_DIR/testfile_fallocate
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# Make sure file exists
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echo >$FILE
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# Force frequent writeback of the file
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(
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trap "STOP=1" SIGTERM
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STOP=0
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while [ $STOP -eq 0 ]; do
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$XFS_IO_PROG -c fsync $FILE
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done
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)&
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SYNCPID=$!
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# Run the test
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src/t_mmap_fallocate $FILE 256 && echo "Silence is golden"
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kill -TERM $SYNCPID
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wait $SYNCPID
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# success, all done
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status=0
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exit
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