4 # Share an extent amongst a bunch of files such that the refcount
5 # stays the same while the rate of change of the set of owners is
6 # steadily increasing. For example, an extent of 32 blocks is owned
7 # by 32 files. At block 1, change one of the owners. At block 2,
8 # change 2 of the owners, and so on.
10 #-----------------------------------------------------------------------
11 # Copyright (c) 2016 Oracle, Inc. All Rights Reserved.
13 # This program is free software; you can redistribute it and/or
14 # modify it under the terms of the GNU General Public License as
15 # published by the Free Software Foundation.
17 # This program is distributed in the hope that it would be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write the Free Software Foundation,
24 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #-----------------------------------------------------------------------
29 seqres=$RESULT_DIR/$seq
30 echo "QA output created by $seq"
34 status=1 # failure is the default!
35 trap "_cleanup; exit \$status" 0 1 2 3 7 15
44 # get standard environment, filters and checks
49 # real QA test starts here
51 _require_scratch_reflink
53 echo "Format and mount"
54 _scratch_mkfs > $seqres.full 2>&1
55 _scratch_mount >> $seqres.full 2>&1
57 testdir=$SCRATCH_MNT/test-$seq
63 echo "Initialize file"
64 _pwrite_byte 0x61 0 $((blocks * blksz)) $testdir/file >> $seqres.full
66 echo "Share the file n-ways"
67 seq 1 $((blocks - 1)) | while read nr; do
68 _reflink_range $testdir/file 0 $testdir/file$nr.0 0 $((nr * blksz)) >> $seqres.full
69 seq $nr $((blocks - 1)) | while read nnr; do
70 _reflink_range $testdir/file $((nnr * blksz)) $testdir/file$nr.$nnr $((nnr * blksz)) $blksz >> $seqres.full
76 md5sum $testdir/file $testdir/file*.0 | _filter_scratch