3 # Test COW from backing files with AIO
5 # Copyright (C) 2012 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 owner=kwolf@redhat.com
25 echo "QA output created by $seq"
29 status=1 # failure is the default!
35 trap "_cleanup; exit \$status" 0 1 2 3 15
37 # get standard environment, filters and checks
41 _supported_fmt qcow2 qed
49 echo "== creating backing file for COW tests =="
61 for i in $(seq 0 $((sectors - 1))); do
62 cur_sec=$((offset / 65536 + i))
63 pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
65 echo "$op -P $pattern $((cur_sec * 64))k 64k"
69 backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
71 mv "$TEST_IMG" "$TEST_IMG.base"
73 _make_test_img -b "$TEST_IMG.base" 6G
76 echo "== Some concurrent requests touching the same cluster =="
80 # Start with a request touching two clusters
81 echo aio_write -P 0x80 2020k 80k
83 # Then add some requests all over the place
84 for i in $(seq 0 15; seq 17 31; seq 33 47); do
85 echo aio_write -P $((0x81 + i)) $((i * 128))k 64k
88 # Then backwards overwriting part of them
89 for i in $( (seq 0 15; seq 17 31; seq 33 47) | tac); do
90 echo aio_write -P $((0x81 + i)) $((i * 128 + 32))k 64k
93 # And finally crossing the next cluster boundary
94 echo aio_write -P 0x90 4080k 80k
97 overlay_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |\
98 sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' \
99 -e 's/qemu-io> //g' | paste - - | sort | tr '\t' '\n'
102 echo "== Verify image content =="
106 echo read -P 31 2016k 4k
107 echo read -P 0x80 2020k 80k
108 echo read -P 32 2100k 12k
109 echo read -P 33 2112k 64k
111 echo read -P 63 4064k 16k
112 echo read -P 0x90 4080k 80k
113 echo read -P 65 4160k 64k
115 for i in $(seq 0 15; seq 17 31; seq 33 47); do
116 echo read -P $((0x81 + i)) $((i * 128))k 96k
119 for i in $(seq 0 14; seq 16 30; seq 32 47); do
120 local cur_sec=$(( i * 2 + 1 ))
121 local pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
123 echo read -P $pattern $((i * 128 + 96))k 32k
127 verify_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io