3 # Test reverse-ordered qcow2 writes on a sub-cluster level
5 # Copyright (C) 2019 Red Hat, Inc.
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.
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.
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/>.
22 echo "QA output created by $seq"
24 status=1 # failure is the default!
30 trap "_cleanup; exit \$status" 0 1 2 3 15
32 # get standard environment, filters and checks
41 echo '--- Writing to the image ---'
43 # Reduce cluster size so we get more and quicker I/O
44 IMGOPTS='cluster_size=4096' _make_test_img 1M
45 (for ((kb = 1024 - 4; kb >= 0; kb -= 4)); do \
46 echo "aio_write -P 42 $((kb + 1))k 2k"; \
48 | $QEMU_IO "$TEST_IMG" > /dev/null
50 echo '--- Verifying its content ---'
52 (for ((kb = 0; kb < 1024; kb += 4)); do \
53 echo "read -P 0 ${kb}k 1k"; \
54 echo "read -P 42 $((kb + 1))k 2k"; \
55 echo "read -P 0 $((kb + 3))k 1k"; \
57 | $QEMU_IO "$TEST_IMG" | _filter_qemu_io | grep 'verification'
60 if [ ${PIPESTATUS[1]} = 0 ]; then
61 echo 'Content verified.'