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 _begin_fstest auto quick clone
16 _register_cleanup "_cleanup" BUS
18 # Override the default cleanup function.
26 # Import common functions.
30 # real QA test starts here
31 _require_scratch_reflink
33 echo "Format and mount"
34 _scratch_mkfs > $seqres.full 2>&1
35 _scratch_mount >> $seqres.full 2>&1
37 testdir=$SCRATCH_MNT/test-$seq
43 echo "Initialize file"
44 _pwrite_byte 0x61 0 $((blocks * blksz)) $testdir/file >> $seqres.full
46 echo "Share the file n-ways"
47 seq 1 $((blocks - 1)) | while read nr; do
48 _reflink_range $testdir/file 0 $testdir/file$nr.0 0 $((nr * blksz)) >> $seqres.full
49 seq $nr $((blocks - 1)) | while read nnr; do
50 _reflink_range $testdir/file $((nnr * blksz)) $testdir/file$nr.$nnr $((nnr * blksz)) $blksz >> $seqres.full
56 md5sum $testdir/file $testdir/file*.0 | _filter_scratch