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Philippe Mathieu-Daudé11a82d12019-03-07 15:58:38 +01001#!/usr/bin/env bash
Vladimir Sementsov-Ogievskiy9dd003a2021-01-16 16:44:19 +03002# group: rw auto backing quick
Kevin Wolf04469192012-06-13 17:15:14 +02003#
4# Test COW from backing files with AIO
5#
6# Copyright (C) 2012 Red Hat, Inc.
7#
8# This program is free software; you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation; either version 2 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License
19# along with this program. If not, see <http://www.gnu.org/licenses/>.
20#
21
22# creator
23owner=kwolf@redhat.com
24
25seq=`basename $0`
26echo "QA output created by $seq"
27
Kevin Wolf04469192012-06-13 17:15:14 +020028status=1 # failure is the default!
29
30_cleanup()
31{
32 _cleanup_test_img
33}
34trap "_cleanup; exit \$status" 0 1 2 3 15
35
36# get standard environment, filters and checks
37. ./common.rc
38. ./common.filter
39
40_supported_fmt qcow2 qed
Max Reitz57284d22020-10-27 20:05:59 +010041_supported_proto file fuse
Kevin Wolf04469192012-06-13 17:15:14 +020042_supported_os Linux
43
44CLUSTER_SIZE=2M
45size=128M
46
47echo
48echo "== creating backing file for COW tests =="
49
Fam Zheng1b935e12015-12-22 10:49:18 +080050TEST_IMG_SAVE="$TEST_IMG"
51TEST_IMG="$TEST_IMG.base"
52
Kevin Wolf04469192012-06-13 17:15:14 +020053_make_test_img $size
54
Eric Blake8cedcff2018-11-16 15:50:02 -060055backing_io()
Kevin Wolf04469192012-06-13 17:15:14 +020056{
57 local offset=$1
58 local sectors=$2
59 local op=$3
60 local pattern=0
61 local cur_sec=0
62
63 for i in $(seq 0 $((sectors - 1))); do
64 cur_sec=$((offset / 65536 + i))
65 pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
66
67 echo "$op -P $pattern $((cur_sec * 64))k 64k"
68 done
69}
70
Jeff Codyfef9c192013-09-25 08:12:22 -040071backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
Kevin Wolf04469192012-06-13 17:15:14 +020072
Fam Zheng1b935e12015-12-22 10:49:18 +080073TEST_IMG="$TEST_IMG_SAVE"
Kevin Wolf04469192012-06-13 17:15:14 +020074
Eric Blakeb66ff2c2020-07-06 15:39:52 -050075_make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G
Kevin Wolf04469192012-06-13 17:15:14 +020076
77echo
78echo "== Some concurrent requests touching the same cluster =="
79
Eric Blake8cedcff2018-11-16 15:50:02 -060080overlay_io()
Kevin Wolf04469192012-06-13 17:15:14 +020081{
82 # Start with a request touching two clusters
83 echo aio_write -P 0x80 2020k 80k
84
85 # Then add some requests all over the place
86 for i in $(seq 0 15; seq 17 31; seq 33 47); do
87 echo aio_write -P $((0x81 + i)) $((i * 128))k 64k
88 done
89
90 # Then backwards overwriting part of them
91 for i in $( (seq 0 15; seq 17 31; seq 33 47) | tac); do
92 echo aio_write -P $((0x81 + i)) $((i * 128 + 32))k 64k
93 done
94
95 # And finally crossing the next cluster boundary
96 echo aio_write -P 0x90 4080k 80k
97}
98
Jeff Codyfef9c192013-09-25 08:12:22 -040099overlay_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |\
Max Reitzc21bddf2013-09-13 10:37:12 +0200100 sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' \
101 -e 's/qemu-io> //g' | paste - - | sort | tr '\t' '\n'
Kevin Wolf04469192012-06-13 17:15:14 +0200102
103echo
104echo "== Verify image content =="
105
Eric Blake8cedcff2018-11-16 15:50:02 -0600106verify_io()
Kevin Wolf04469192012-06-13 17:15:14 +0200107{
108 echo read -P 31 2016k 4k
109 echo read -P 0x80 2020k 80k
110 echo read -P 32 2100k 12k
111 echo read -P 33 2112k 64k
112
113 echo read -P 63 4064k 16k
114 echo read -P 0x90 4080k 80k
115 echo read -P 65 4160k 64k
116
117 for i in $(seq 0 15; seq 17 31; seq 33 47); do
118 echo read -P $((0x81 + i)) $((i * 128))k 96k
119 done
120
121 for i in $(seq 0 14; seq 16 30; seq 32 47); do
122 local cur_sec=$(( i * 2 + 1 ))
123 local pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
124
125 echo read -P $pattern $((i * 128 + 96))k 32k
126 done
127}
128
Jeff Codyfef9c192013-09-25 08:12:22 -0400129verify_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
Kevin Wolf04469192012-06-13 17:15:14 +0200130
131_check_test_img
132
133# success, all done
134echo "*** done"
135rm -f $seq.full
136status=0