2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016 Oracle, Inc. All Rights Reserved.
7 # Share an extent amongst a bunch of files such that the refcount
8 # stays the same while the rate of change of the set of owners is
9 # steadily increasing. For example, an extent of 32 blocks is owned
10 # by 32 files. At block 1, change one of the owners. At block 2,
11 # change 2 of the owners, and so on.
14 seqres=$RESULT_DIR/$seq
15 echo "QA output created by $seq"
19 status=1 # failure is the default!
20 trap "_cleanup; exit \$status" 0 1 2 3 7 15
29 # get standard environment, filters and checks
34 # real QA test starts here
36 _require_scratch_reflink
38 echo "Format and mount"
39 _scratch_mkfs > $seqres.full 2>&1
40 _scratch_mount >> $seqres.full 2>&1
42 testdir=$SCRATCH_MNT/test-$seq
48 echo "Initialize file"
49 _pwrite_byte 0x61 0 $((blocks * blksz)) $testdir/file >> $seqres.full
51 echo "Share the file n-ways"
52 seq 1 $((blocks - 1)) | while read nr; do
53 _reflink_range $testdir/file 0 $testdir/file$nr.0 0 $((nr * blksz)) >> $seqres.full
54 seq $nr $((blocks - 1)) | while read nnr; do
55 _reflink_range $testdir/file $((nnr * blksz)) $testdir/file$nr.$nnr $((nnr * blksz)) $blksz >> $seqres.full
61 md5sum $testdir/file $testdir/file*.0 | _filter_scratch