xref: /openbmc/qemu/tests/qemu-iotests/019 (revision 812b31d3)
1#!/usr/bin/env bash
2# group: rw backing auto quick
3#
4# When using a backing file for the output image in qemu-img convert,
5# the backing file clusters must not copied. The data must still be
6# read correctly.
7#
8# Copyright (C) 2009 Red Hat, Inc.
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program.  If not, see <http://www.gnu.org/licenses/>.
22#
23
24# creator
25owner=kwolf@redhat.com
26
27seq=`basename $0`
28echo "QA output created by $seq"
29
30status=1	# failure is the default!
31
32_cleanup()
33{
34    _cleanup_test_img
35    _rm_test_img "$TEST_IMG.base"
36    _rm_test_img "$TEST_IMG.orig"
37}
38trap "_cleanup; exit \$status" 0 1 2 3 15
39
40# get standard environment, filters and checks
41. ./common.rc
42. ./common.filter
43. ./common.pattern
44
45# Any format supporting backing files
46_supported_fmt qcow qcow2 vmdk qed
47_supported_proto file
48_supported_os Linux
49_unsupported_imgopts "subformat=monolithicFlat" \
50                     "subformat=twoGbMaxExtentFlat" \
51                     "subformat=twoGbMaxExtentSparse" \
52                     "subformat=streamOptimized"
53
54TEST_OFFSETS="0 4294967296"
55CLUSTER_SIZE=65536
56
57TEST_IMG_SAVE="$TEST_IMG"
58TEST_IMG="$TEST_IMG.base"
59
60_make_test_img 6G
61
62echo "Filling base image"
63echo
64
65for offset in $TEST_OFFSETS; do
66    # Some clusters with alternating backing file/image file reads
67    io_pattern writev $(( offset )) 512 1024 64 42
68
69    # Complete backing clusters
70    io_pattern writev $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1 42
71done
72_check_test_img
73
74echo "Creating test image with backing file"
75echo
76
77TEST_IMG="$TEST_IMG_SAVE.orig"
78_make_test_img -b "$TEST_IMG_SAVE.base" -F $IMGFMT 6G
79
80echo "Filling test image"
81echo
82
83for offset in $TEST_OFFSETS; do
84    # Some clusters with alternating backing file/image file reads
85    io_pattern writev $(( offset + 512 )) 512 1024 64 43
86
87    # Complete test image clusters
88    io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1 43
89done
90_check_test_img
91
92TEST_IMG="$TEST_IMG_SAVE"
93
94# Test the conversion twice: One test with the old-style -B option and another
95# one with -o backing_file
96
97for backing_option in "-B " "-o backing_file="; do
98
99    echo
100    echo Testing conversion with $backing_option"$TEST_IMG.base" | _filter_testdir | _filter_imgfmt
101    echo
102    $QEMU_IMG convert -f $IMGFMT -O $IMGFMT $backing_option"$TEST_IMG.base" \
103        -o backing_fmt=$IMGFMT "$TEST_IMG.orig" "$TEST_IMG"
104
105    echo "Checking if backing clusters are allocated when they shouldn't"
106    echo
107    for offset in $TEST_OFFSETS; do
108        # Complete backing clusters
109        is_allocated $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1
110    done
111
112    echo "Reading"
113    echo
114
115    for offset in $TEST_OFFSETS; do
116        # Some clusters with alternating backing file/image file reads
117        io_pattern readv $(( offset )) 512 1024 64 42
118        io_pattern readv $(( offset + 512 )) 512 1024 64 43
119
120        # Complete test image clusters
121        io_pattern readv $(( offset  + 1024 * 1024))  $CLUSTER_SIZE $CLUSTER_SIZE 1 42
122        io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE))  $CLUSTER_SIZE $CLUSTER_SIZE 1 43
123
124        # Empty sectors
125        io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1
126    done
127    _check_test_img
128
129done
130
131# success, all done
132echo "*** done"
133rm -f $seq.full
134status=0
135