1#!/usr/bin/env bash
2#
3# Test which nodes are involved in internal snapshots
4#
5# Copyright (C) 2019 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 $seq"
26
27status=1	# failure is the default!
28
29_cleanup()
30{
31    _cleanup_test_img
32    rm -f "$SOCK_DIR/nbd"
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
41_supported_proto file
42_supported_os Linux
43
44# Internal snapshots are (currently) impossible with refcount_bits=1
45_unsupported_imgopts 'refcount_bits=1[^0-9]'
46
47do_run_qemu()
48{
49    echo Testing: "$@"
50    (
51        if ! test -t 0; then
52            while read cmd; do
53                echo $cmd
54            done
55        fi
56        echo quit
57    ) | $QEMU -nographic -monitor stdio -nodefaults "$@"
58    echo
59}
60
61run_qemu()
62{
63    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_hmp |
64        _filter_generated_node_ids | _filter_imgfmt | _filter_vmstate_size
65}
66
67size=128M
68
69run_test()
70{
71    _make_test_img $size
72    printf "savevm snap0\ninfo snapshots\nloadvm snap0\n" | run_qemu "$@" | _filter_date
73}
74
75
76echo
77echo "=== No block devices at all ==="
78echo
79
80run_test
81
82echo
83echo "=== -drive if=none ==="
84echo
85
86run_test -drive driver=file,file="$TEST_IMG",if=none
87run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=none
88run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=none -device virtio-blk,drive=none0
89
90echo
91echo "=== -drive if=virtio ==="
92echo
93
94run_test -drive driver=file,file="$TEST_IMG",if=virtio
95run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=virtio
96
97echo
98echo "=== Simple -blockdev ==="
99echo
100
101run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file
102run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
103         -blockdev driver=$IMGFMT,file=file,node-name=fmt
104run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
105         -blockdev driver=raw,file=file,node-name=raw \
106         -blockdev driver=$IMGFMT,file=raw,node-name=fmt
107
108echo
109echo "=== -blockdev with a filter on top ==="
110echo
111
112run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
113         -blockdev driver=$IMGFMT,file=file,node-name=fmt \
114         -blockdev driver=copy-on-read,file=fmt,node-name=filter
115
116echo
117echo "=== -blockdev with a backing file ==="
118echo
119
120TEST_IMG="$TEST_IMG.base" _make_test_img $size
121
122IMGOPTS="backing_file=$TEST_IMG.base" \
123run_test -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
124         -blockdev driver=file,filename="$TEST_IMG",node-name=file \
125         -blockdev driver=$IMGFMT,file=file,backing=backing-file,node-name=fmt
126
127IMGOPTS="backing_file=$TEST_IMG.base" \
128run_test -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
129         -blockdev driver=$IMGFMT,file=backing-file,node-name=backing-fmt \
130         -blockdev driver=file,filename="$TEST_IMG",node-name=file \
131         -blockdev driver=$IMGFMT,file=file,backing=backing-fmt,node-name=fmt
132
133# A snapshot should be present on the overlay, but not the backing file
134echo Internal snapshots on overlay:
135$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size
136
137echo Internal snapshots on backing file:
138$QEMU_IMG snapshot -l "$TEST_IMG.base" | _filter_date | _filter_vmstate_size
139
140echo
141echo "=== -blockdev with NBD server on the backing file ==="
142echo
143
144IMGOPTS="backing_file=$TEST_IMG.base" _make_test_img $size
145cat <<EOF |
146nbd_server_start unix:$SOCK_DIR/nbd
147nbd_server_add -w backing-fmt
148savevm snap0
149info snapshots
150loadvm snap0
151EOF
152run_qemu -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
153         -blockdev driver=$IMGFMT,file=backing-file,node-name=backing-fmt \
154         -blockdev driver=file,filename="$TEST_IMG",node-name=file \
155         -blockdev driver=$IMGFMT,file=file,backing=backing-fmt,node-name=fmt |
156         _filter_date
157
158# This time, a snapshot should be created on both files
159echo Internal snapshots on overlay:
160$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size
161
162echo Internal snapshots on backing file:
163$QEMU_IMG snapshot -l "$TEST_IMG.base" | _filter_date | _filter_vmstate_size
164
165# success, all done
166echo "*** done"
167rm -f $seq.full
168status=0
169