| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2015 Oracle, Inc. All Rights Reserved. |
| # |
| # FS QA Test No. 167 |
| # |
| # Test for races or FS corruption when writing to a file that's also |
| # the source 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_cp_reflink |
| |
| 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 file" |
| echo >> $seqres.full |
| _pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full |
| _scratch_cycle_mount |
| |
| # Snapshot creator... |
| snappy() { |
| n=0 |
| while [ ! -e $finished_file ]; do |
| out="$(_cp_reflink $testdir/file1 $testdir/snap_$n 2>&1)" |
| res=$? |
| echo "$out" | grep -q "No space left" && break |
| test -n "$out" && echo "$out" |
| test $res -ne 0 && break |
| n=$((n + 1)) |
| done |
| } |
| |
| echo "Snapshot a file undergoing buffered rewrite" |
| snappy & |
| seq $nr_loops -1 0 | while read i; do |
| _pwrite_byte 0x63 $((i * blksz)) $blksz $testdir/file1 >> $seqres.full |
| done |
| touch $finished_file |
| wait |
| |
| # success, all done |
| status=0 |
| exit |