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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
478f75b0d0
If we're doing write/overwrite/snapshot/resource exhaustion tests on the scratch device, use the test directory to hold the loop termination signal files. This way we don't run infinitely because we can't create the flag due to ENOSPC. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <eguan@redhat.com>
94 lines
2.3 KiB
Bash
Executable File
94 lines
2.3 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 170
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#
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# Test for races or FS corruption when DIO writing to a file that's also
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# the target of a reflink operation.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015 Oracle, Inc. 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 7 15
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_cleanup()
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{
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cd /
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rm -rf $tmp.* $finished_file
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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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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_require_scratch_reflink
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_require_odirect
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echo "Format and mount"
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_scratch_mkfs > $seqres.full 2>&1
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_scratch_mount >> $seqres.full 2>&1
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testdir=$SCRATCH_MNT/test-$seq
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finished_file=/tmp/finished
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rm -rf $finished_file
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mkdir $testdir
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loops=1024
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nr_loops=$((loops - 1))
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blksz=65536
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echo "Initialize files"
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echo >> $seqres.full
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_pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full
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_pwrite_byte 0x62 0 $((loops * blksz)) $testdir/file2 >> $seqres.full
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_scratch_cycle_mount
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# Direct I/O overwriter...
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overwrite() {
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while [ ! -e $finished_file ]; do
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seq $nr_loops -1 0 | while read i; do
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_pwrite_byte 0x63 $((i * blksz)) $blksz -d $testdir/file2 >> $seqres.full
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done
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done
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}
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echo "Reflink and dio write the target"
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overwrite &
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seq 1 10 | while read j; do
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seq 0 $nr_loops | while read i; do
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_reflink_range $testdir/file1 $((i * blksz)) \
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$testdir/file2 $((i * blksz)) $blksz >> $seqres.full
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[ $? -ne 0 ] && exit
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done
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done
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touch $finished_file
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wait
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# success, all done
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status=0
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exit
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