4 # Test for races or FS corruption when DIO writing to a file that's also
5 # the target of a reflink operation.
7 #-----------------------------------------------------------------------
8 # Copyright (c) 2015 Oracle, Inc. All Rights Reserved.
10 # This program is free software; you can redistribute it and/or
11 # modify it under the terms of the GNU General Public License as
12 # published by the Free Software Foundation.
14 # This program is distributed in the hope that it would be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program; if not, write the Free Software Foundation,
21 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #-----------------------------------------------------------------------
26 seqres=$RESULT_DIR/$seq
27 echo "QA output created by $seq"
31 status=1 # failure is the default!
32 trap "_cleanup; exit \$status" 0 1 2 3 7 15
41 # get standard environment, filters and checks
46 # real QA test starts here
48 _require_scratch_reflink
51 echo "Format and mount"
52 _scratch_mkfs > $seqres.full 2>&1
53 _scratch_mount >> $seqres.full 2>&1
55 testdir=$SCRATCH_MNT/test-$seq
59 nr_loops=$((loops - 1))
62 echo "Initialize files"
64 _pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full
65 _pwrite_byte 0x62 0 $((loops * blksz)) $testdir/file2 >> $seqres.full
68 # Direct I/O overwriter...
70 while [ ! -e $testdir/finished ]; do
71 seq $nr_loops -1 0 | while read i; do
72 _pwrite_byte 0x63 $((i * blksz)) $blksz -d $testdir/file2 >> $seqres.full
77 echo "Reflink and dio write the target"
79 seq 1 10 | while read j; do
80 seq 0 $nr_loops | while read i; do
81 _reflink_range $testdir/file1 $((i * blksz)) \
82 $testdir/file2 $((i * blksz)) $blksz >> $seqres.full
86 touch $testdir/finished