| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2015 Oracle, Inc. All Rights Reserved. |
| # |
| # FS QA Test No. 170 |
| # |
| # Test for races or FS corruption when DIO writing to a file that's also |
| # the target of a reflink operation. |
| # |
| 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.* $finished_file |
| wait |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _require_scratch_reflink |
| _require_odirect |
| |
| echo "Format and mount" |
| _scratch_mkfs > $seqres.full 2>&1 |
| _scratch_mount >> $seqres.full 2>&1 |
| |
| testdir=$SCRATCH_MNT/test-$seq |
| finished_file=/tmp/finished |
| rm -rf $finished_file |
| mkdir $testdir |
| |
| loops=1024 |
| nr_loops=$((loops - 1)) |
| blksz=65536 |
| |
| echo "Initialize files" |
| echo >> $seqres.full |
| _pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full |
| _pwrite_byte 0x62 0 $((loops * blksz)) $testdir/file2 >> $seqres.full |
| _scratch_cycle_mount |
| |
| # Direct I/O overwriter... |
| overwrite() { |
| while [ ! -e $finished_file ]; do |
| seq $nr_loops -1 0 | while read i; do |
| _pwrite_byte 0x63 $((i * blksz)) $blksz -d $testdir/file2 >> $seqres.full |
| done |
| done |
| } |
| |
| echo "Reflink and dio write the target" |
| overwrite & |
| seq 1 10 | while read j; do |
| seq 0 $nr_loops | while read i; do |
| _reflink_range $testdir/file1 $((i * blksz)) \ |
| $testdir/file2 $((i * blksz)) $blksz >> $seqres.full |
| [ $? -ne 0 ] && exit |
| done |
| done |
| touch $finished_file |
| wait |
| |
| # success, all done |
| status=0 |
| exit |