3 # Test resizing a qcow2 image with a backing file
5 # Copyright (C) 2020 Igalia, S.L.
6 # Author: Alberto Garcia <berto@igalia.com>
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.
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.
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/>.
23 owner
=berto@igalia.com
26 echo "QA output created by $seq"
28 status
=1 # failure is the default!
34 trap "_cleanup; exit \$status" 0 1 2 3 15
36 # get standard environment, filters and checks
44 echo '### Create the backing image'
45 BACKING_IMG
="$TEST_IMG.base"
46 TEST_IMG
="$BACKING_IMG" _make_test_img
1M
48 echo '### Fill the backing image with data (0x11)'
49 $QEMU_IO -c 'write -P 0x11 0 1M' "$BACKING_IMG" | _filter_qemu_io
51 echo '### Create the top image'
52 _make_test_img
-F "$IMGFMT" -b "$BACKING_IMG"
54 echo '### Fill the top image with data (0x22)'
55 $QEMU_IO -c 'write -P 0x22 0 1M' "$TEST_IMG" | _filter_qemu_io
57 # Both offsets are part of the same cluster.
58 echo '### Shrink the image to 520k'
59 $QEMU_IMG resize
--shrink "$TEST_IMG" 520k
60 echo '### Grow the image to 567k'
61 $QEMU_IMG resize
"$TEST_IMG" 567k
63 echo '### Check that the tail of the image reads as zeroes'
64 $QEMU_IO -c 'read -P 0x22 0 520k' "$TEST_IMG" | _filter_qemu_io
65 $QEMU_IO -c 'read -P 0x00 520k 47k' "$TEST_IMG" | _filter_qemu_io
67 echo '### Show output of qemu-img map'
68 $QEMU_IMG map
"$TEST_IMG" | _filter_testdir