apfstests/tests/generic/161

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Oracle, Inc.  All Rights Reserved.
#
# FS QA Test No. 161
#
# Test for race between delete a file while rewriting its reflinked twin
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 7 15

_cleanup()
{
    cd /
    rm -rf $tmp.*
    wait
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/reflink

# real QA test starts here
_require_scratch_reflink
_require_cp_reflink

echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1

testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir

loops=4096
blksz=65536

echo "Initialize files"
echo >> $seqres.full
_pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full
_cp_reflink $testdir/file1 $testdir/file2
_scratch_cycle_mount

echo "Delete while rewriting"
rm -rf $testdir/file1 &
_pwrite_byte 0x62 0 $((loops * blksz)) $testdir/file1 >> $seqres.full
wait

# success, all done
status=0
exit