xref: /openbmc/qemu/tests/qemu-iotests/177 (revision 812b31d3)
1#!/usr/bin/env bash
2# group: rw auto quick
3#
4# Test corner cases with unusual block geometries
5#
6# Copyright (C) 2016-2018 Red Hat, Inc.
7#
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.
12#
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.
17#
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/>.
20#
21
22# creator
23owner=eblake@redhat.com
24
25seq=`basename $0`
26echo "QA output created by $seq"
27
28status=1	# failure is the default!
29
30_cleanup()
31{
32	_cleanup_test_img
33}
34trap "_cleanup; exit \$status" 0 1 2 3 15
35
36# get standard environment, filters and checks
37. ./common.rc
38. ./common.filter
39
40# This test is runnable under compat=0.10; see test 204 for additional
41# tests specific to compat=1.1.
42
43_supported_fmt qcow2
44_supported_proto file fuse
45
46CLUSTER_SIZE=1M
47size=128M
48options=driver=blkdebug,image.driver=qcow2
49
50echo
51echo "== setting up files =="
52
53TEST_IMG="$TEST_IMG.base" _make_test_img $size
54$QEMU_IO -c "write -P 11 0 $size" "$TEST_IMG.base" | _filter_qemu_io
55_make_test_img -b "$TEST_IMG.base" -F $IMGFMT
56$QEMU_IO -c "write -P 22 0 $size" "$TEST_IMG" | _filter_qemu_io
57
58# Limited to 64k max-transfer
59echo
60echo "== constrained alignment and max-transfer =="
61limits=align=4k,max-transfer=64k
62$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
63         -c "write -P 33 1000 128k" -c "read -P 33 1000 128k" | _filter_qemu_io
64
65echo
66echo "== write zero with constrained max-transfer =="
67limits=align=512,max-transfer=64k,opt-write-zero=$CLUSTER_SIZE
68$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
69         -c "write -z 8003584 2093056" | _filter_qemu_io
70
71# non-power-of-2 write-zero/discard alignments
72echo
73echo "== non-power-of-2 write zeroes limits =="
74
75limits=align=512,opt-write-zero=15M,max-write-zero=15M,opt-discard=15M,max-discard=15M
76$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
77         -c "write -z 32M 32M" | _filter_qemu_io
78
79echo
80echo "== non-power-of-2 discard limits =="
81
82limits=align=512,opt-write-zero=15M,max-write-zero=15M,opt-discard=15M,max-discard=15M
83$QEMU_IO -c "open -o $options,$limits blkdebug::$TEST_IMG" \
84         -c "discard 80000001 30M" | _filter_qemu_io
85
86echo
87echo "== verify image content =="
88
89verify_io()
90{
91    if ($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" |
92	    grep "compat: 0.10" > /dev/null); then
93        # In v2 images clusters are not discarded when there is a backing file
94        # so the previous value is read
95        discarded=22
96    else
97        # Discarded clusters are zeroed for v3 or later
98        discarded=0
99    fi
100
101    echo read -P 22 0 1000
102    echo read -P 33 1000 128k
103    echo read -P 22 132072 7871512
104    echo read -P 0 8003584 2093056
105    echo read -P 22 10096640 23457792
106    echo read -P 0 32M 32M
107    echo read -P 22 64M 13M
108    echo read -P $discarded 77M 29M
109    echo read -P 22 106M 22M
110}
111
112verify_io | $QEMU_IO -r "$TEST_IMG" | _filter_qemu_io
113
114_check_test_img
115
116# success, all done
117echo "*** done"
118status=0
119