4 # Test qemu-img vs. unaligned images
5 # (See also 253, which is the O_DIRECT version)
7 # Copyright (C) 2018-2019 Red Hat, Inc.
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 2 of the License, or
12 # (at your option) any later version.
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program. If not, see <http://www.gnu.org/licenses/>.
24 echo "QA output created by $seq"
26 status=1 # failure is the default!
32 trap "_cleanup; exit \$status" 0 1 2 3 15
34 # get standard environment, filters and checks
39 _supported_proto file fuse
42 _default_cache_mode writeback
43 _supported_cache_modes writeback writethrough unsafe
46 echo "=== Check mapping of unaligned raw image ==="
49 _make_test_img 65537 # qemu-img create rounds size up
51 # file-posix allocates the first block of any images when it is created;
52 # the size of this block depends on the host page size and the file
53 # system block size, none of which are constant. Discard the whole
54 # image so we will not see this allocation in qemu-img map's output.
55 $QEMU_IO -c 'discard 0 65537' "$TEST_IMG" | _filter_qemu_io
57 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
59 truncate --size=65537 "$TEST_IMG" # so we resize it and check again
60 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
62 $QEMU_IO -c 'w 65536 1' "$TEST_IMG" | _filter_qemu_io # writing also rounds up
63 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
65 truncate --size=65537 "$TEST_IMG" # so we resize it and check again
66 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map