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Philippe Mathieu-Daudé11a82d12019-03-07 15:58:38 +01001#!/usr/bin/env bash
Kevin Wolfbce283c2012-06-13 16:01:31 +02002#
3# Test COW from backing files
4#
5# Copyright (C) 2012 Red Hat, Inc.
6#
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 2 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program. If not, see <http://www.gnu.org/licenses/>.
19#
20
21# creator
22owner=kwolf@redhat.com
23
24seq=`basename $0`
25echo "QA output created by $seq"
26
Kevin Wolfbce283c2012-06-13 16:01:31 +020027status=1 # failure is the default!
28
29_cleanup()
30{
31 _cleanup_test_img
32}
33trap "_cleanup; exit \$status" 0 1 2 3 15
34
35# get standard environment, filters and checks
36. ./common.rc
37. ./common.filter
38
39_supported_fmt qcow qcow2 vmdk qed
Peter Lieven1f7bf7d2014-02-03 10:26:14 +010040_supported_proto file
Fam Zhengd2329f22013-11-26 14:40:33 +080041_unsupported_imgopts "subformat=monolithicFlat" \
42 "subformat=twoGbMaxExtentFlat" \
Max Reitz325dd912019-08-15 17:36:36 +020043 "subformat=twoGbMaxExtentSparse" \
44 "subformat=streamOptimized"
Kevin Wolfbce283c2012-06-13 16:01:31 +020045
46CLUSTER_SIZE=4k
47size=128M
48
49echo
50echo "== creating backing file for COW tests =="
51
Fam Zheng9b652fb2015-12-22 10:49:17 +080052TEST_IMG_SAVE="$TEST_IMG"
53TEST_IMG="$TEST_IMG.base"
54
Kevin Wolfbce283c2012-06-13 16:01:31 +020055_make_test_img $size
56
Eric Blake8cedcff2018-11-16 15:50:02 -060057backing_io()
Kevin Wolfbce283c2012-06-13 16:01:31 +020058{
59 local offset=$1
60 local sectors=$2
61 local op=$3
62 local pattern=0
63 local cur_sec=0
64
Thomas Huth30edd9f2019-07-23 13:12:01 +020065 for ((i=0;i<=$((sectors - 1));i++)); do
Kevin Wolfbce283c2012-06-13 16:01:31 +020066 cur_sec=$((offset / 512 + i))
67 pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 ))
68
69 echo "$op -P $pattern $((cur_sec * 512)) 512"
70 done
71}
72
Jeff Codyfef9c192013-09-25 08:12:22 -040073backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
Kevin Wolfbce283c2012-06-13 16:01:31 +020074
Fam Zheng9b652fb2015-12-22 10:49:17 +080075TEST_IMG="$TEST_IMG_SAVE"
Kevin Wolfbce283c2012-06-13 16:01:31 +020076
Jeff Codyfef9c192013-09-25 08:12:22 -040077_make_test_img -b "$TEST_IMG.base" 6G
Kevin Wolfbce283c2012-06-13 16:01:31 +020078
79echo
80echo "== COW in a single cluster =="
Jeff Codyfef9c192013-09-25 08:12:22 -040081$QEMU_IO -c "write -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
82$QEMU_IO -c "write -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
83$QEMU_IO -c "write -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
Kevin Wolfbce283c2012-06-13 16:01:31 +020084
Jeff Codyfef9c192013-09-25 08:12:22 -040085$QEMU_IO -c "read -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io
86backing_io $((2 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
87$QEMU_IO -c "read -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io
88backing_io $((8 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
89$QEMU_IO -c "read -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io
90backing_io $((11 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
Kevin Wolfbce283c2012-06-13 16:01:31 +020091
92echo
93echo "== COW in two-cluster allocations =="
Jeff Codyfef9c192013-09-25 08:12:22 -040094$QEMU_IO -c "write -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
95$QEMU_IO -c "write -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
96$QEMU_IO -c "write -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
Kevin Wolfbce283c2012-06-13 16:01:31 +020097
Jeff Codyfef9c192013-09-25 08:12:22 -040098$QEMU_IO -c "read -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io
99backing_io $((22 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
100$QEMU_IO -c "read -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io
101backing_io $((32 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
102$QEMU_IO -c "read -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io
103backing_io $((38 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
Kevin Wolfbce283c2012-06-13 16:01:31 +0200104
105echo
106echo "== COW in multi-cluster allocations =="
Jeff Codyfef9c192013-09-25 08:12:22 -0400107$QEMU_IO -c "write -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
108$QEMU_IO -c "write -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
109$QEMU_IO -c "write -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
Kevin Wolfbce283c2012-06-13 16:01:31 +0200110
Jeff Codyfef9c192013-09-25 08:12:22 -0400111$QEMU_IO -c "read -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io
112backing_io $((63 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
113$QEMU_IO -c "read -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io
114backing_io $((80 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
115$QEMU_IO -c "read -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io
116backing_io $((98 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
Kevin Wolfbce283c2012-06-13 16:01:31 +0200117
118_check_test_img
119
120# success, all done
121echo "*** done"
122rm -f $seq.full
123status=0