2 # group: rw auto backing quick
4 # Test COW from backing files with AIO
6 # Copyright (C) 2012 Red Hat, Inc.
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=kwolf@redhat.com
26 echo "QA output created by $seq"
28 status=1 # failure is the default!
34 trap "_cleanup; exit \$status" 0 1 2 3 15
36 # get standard environment, filters and checks
40 _supported_fmt qcow2 qed
41 _supported_proto file fuse
48 echo "== creating backing file for COW tests =="
50 TEST_IMG_SAVE="$TEST_IMG"
51 TEST_IMG="$TEST_IMG.base"
63 for i in $(seq 0 $((sectors - 1))); do
64 cur_sec=$((offset / 65536 + i))
65 pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
67 echo "$op -P $pattern $((cur_sec * 64))k 64k"
71 backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io
73 TEST_IMG="$TEST_IMG_SAVE"
75 _make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G
78 echo "== Some concurrent requests touching the same cluster =="
82 # Start with a request touching two clusters
83 echo aio_write -P 0x80 2020k 80k
85 # Then add some requests all over the place
86 for i in $(seq 0 15; seq 17 31; seq 33 47); do
87 echo aio_write -P $((0x81 + i)) $((i * 128))k 64k
90 # Then backwards overwriting part of them
91 for i in $( (seq 0 15; seq 17 31; seq 33 47) | tac); do
92 echo aio_write -P $((0x81 + i)) $((i * 128 + 32))k 64k
95 # And finally crossing the next cluster boundary
96 echo aio_write -P 0x90 4080k 80k
99 overlay_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |\
100 sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' \
101 -e 's/qemu-io> //g' | paste - - | sort | tr '\t' '\n'
104 echo "== Verify image content =="
108 echo read -P 31 2016k 4k
109 echo read -P 0x80 2020k 80k
110 echo read -P 32 2100k 12k
111 echo read -P 33 2112k 64k
113 echo read -P 63 4064k 16k
114 echo read -P 0x90 4080k 80k
115 echo read -P 65 4160k 64k
117 for i in $(seq 0 15; seq 17 31; seq 33 47); do
118 echo read -P $((0x81 + i)) $((i * 128))k 96k
121 for i in $(seq 0 14; seq 16 30; seq 32 47); do
122 local cur_sec=$(( i * 2 + 1 ))
123 local pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
125 echo read -P $pattern $((i * 128 + 96))k 32k
129 verify_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io