1#!/usr/bin/env bash
2#
3# test of qemu-img convert -n - convert without creation
4#
5# Copyright (C) 2009 Red Hat, Inc.
6# Copyright (C) 2013 Alex Bligh (alex@alex.org.uk)
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=alex@alex.org.uk
24
25seq=`basename $0`
26echo "QA output created by $seq"
27
28status=1	# failure is the default!
29
30_cleanup()
31{
32    _cleanup_test_img
33    for img in "$TEST_IMG".{orig,raw1,raw2,target}; do
34        _rm_test_img "$img"
35    done
36}
37trap "_cleanup; exit \$status" 0 1 2 3 15
38
39# get standard environment, filters and checks
40. ./common.rc
41. ./common.filter
42. ./common.pattern
43
44_supported_fmt qcow qcow2 vmdk qed raw
45_supported_proto file
46_unsupported_imgopts "subformat=monolithicFlat" \
47                     "subformat=twoGbMaxExtentFlat" \
48                     "subformat=twoGbMaxExtentSparse" \
49                     "subformat=streamOptimized"
50
51_make_test_img 4M
52
53echo "== Testing conversion with -n fails with no target file =="
54if $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n "$TEST_IMG" "$TEST_IMG.orig" >/dev/null 2>&1; then
55    exit 1
56fi
57
58echo "== Testing conversion with -n succeeds with a target file =="
59_rm_test_img "$TEST_IMG.orig"
60TEST_IMG="$TEST_IMG.orig" _make_test_img 4M
61if ! $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n "$TEST_IMG" "$TEST_IMG.orig" ; then
62    exit 1
63fi
64
65echo "== Testing conversion to raw is the same after conversion with -n =="
66# compare the raw files
67if ! $QEMU_IMG convert -f $IMGFMT -O raw "$TEST_IMG" "$TEST_IMG.raw1" ; then
68    exit 1
69fi
70
71if ! $QEMU_IMG convert -f $IMGFMT -O raw "$TEST_IMG.orig" "$TEST_IMG.raw2" ; then
72    exit 1
73fi
74
75if ! cmp "$TEST_IMG.raw1" "$TEST_IMG.raw2" ; then
76    exit 1
77fi
78
79echo "== Testing conversion back to original format =="
80if ! $QEMU_IMG convert -f raw -O $IMGFMT -n "$TEST_IMG.raw2" "$TEST_IMG" ; then
81    exit 1
82fi
83_check_test_img
84
85echo "== Testing conversion to a smaller file fails =="
86TEST_IMG="$TEST_IMG.target" _make_test_img 2M
87if $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n "$TEST_IMG" "$TEST_IMG.target" >/dev/null 2>&1; then
88    exit 1
89fi
90
91echo "== Regression testing for copy offloading bug =="
92
93_make_test_img 1M
94TEST_IMG="$TEST_IMG.target" _make_test_img 1M
95$QEMU_IO -c 'write -P 1 0 512k' -c 'write -P 2 512k 512k' "$TEST_IMG" | _filter_qemu_io
96$QEMU_IO -c 'write -P 4 512k 512k' -c 'write -P 3 0 512k' "$TEST_IMG.target" | _filter_qemu_io
97$QEMU_IMG convert -n -O $IMGFMT "$TEST_IMG" "$TEST_IMG.target"
98$QEMU_IMG compare "$TEST_IMG" "$TEST_IMG.target"
99
100echo "*** done"
101rm -f $seq.full
102status=0
103exit 0
104