blob: 658a5b7004782c3231538f0cac535a2dadd27338 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# FS QA Test No. 663
#
# Ensuring that copy on write in mmap mode to the source file when the
# CoW range covers regular unshared and regular shared blocks.
# (MMAP version of generic/284,287)
# - Create two files.
# - Reflink the odd blocks of the first file into the second file.
# - mmap CoW the first file across the halfway mark, starting with the
# regular extent.
# - Check that the files are now different where we say they're different.
#
. ./common/preamble
_begin_fstest auto quick clone prealloc
# Import common functions.
. ./common/filter
. ./common/reflink
# real QA test starts here
_require_scratch_reflink
_require_xfs_io_command "falloc"
echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir
echo "Create the original files"
blksz=65536
nr=64
filesize=$((blksz * nr))
_sweave_reflink_regular $blksz $nr $testdir/file1 $testdir/file3 >> $seqres.full
_scratch_cycle_mount
echo "Compare files"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file3 | _filter_scratch
md5sum $testdir/file1.chk | _filter_scratch
echo "mmap CoW across the transition"
cowoff=$((filesize / 4))
cowsz=$((filesize / 2))
mmapsz=$((cowoff + cowsz))
_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file1 >> $seqres.full
_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file1.chk >> $seqres.full
_scratch_cycle_mount
echo "Compare files"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file3 | _filter_scratch
md5sum $testdir/file1.chk | _filter_scratch
# success, all done
status=0
exit
|
