1#!/usr/bin/env bash
2#
3# Test bdrv_pwrite_zeroes with backing files (see also 154)
4#
5# Copyright (C) 2012 Red Hat, Inc.
6#
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.
11#
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.
16#
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/>.
19#
20
21# creator
22owner=kwolf@redhat.com
23
24seq=`basename $0`
25echo "QA output created by $seq"
26
27status=1	# failure is the default!
28
29_cleanup()
30{
31	_cleanup_test_img
32}
33trap "_cleanup; exit \$status" 0 1 2 3 15
34
35# get standard environment, filters and checks
36. ./common.rc
37. ./common.filter
38
39_supported_fmt qcow qcow2 vmdk qed
40_supported_proto file
41_supported_os Linux
42_unsupported_imgopts "subformat=monolithicFlat" \
43                     "subformat=twoGbMaxExtentFlat" \
44                     "subformat=twoGbMaxExtentSparse" \
45                     "subformat=streamOptimized"
46
47CLUSTER_SIZE=4k
48size=128M
49
50echo
51echo "== creating backing file for COW tests =="
52
53TEST_IMG_SAVE="$TEST_IMG"
54TEST_IMG="$TEST_IMG.base"
55
56_make_test_img $size
57$QEMU_IO -c "write -P 0x55 0 1M" "$TEST_IMG" | _filter_qemu_io
58
59TEST_IMG="$TEST_IMG_SAVE"
60
61_make_test_img -b "$TEST_IMG.base" 6G
62
63echo
64echo "== zero write with backing file =="
65$QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io
66$QEMU_IO -c "write -z 513k 13k" "$TEST_IMG" | _filter_qemu_io
67
68_check_test_img
69
70echo
71echo "== verifying patterns (3) =="
72$QEMU_IO -c "read -P 0x55 0 64k" "$TEST_IMG" | _filter_qemu_io
73$QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io
74$QEMU_IO -c "read -P 0x55 256k 257k" "$TEST_IMG" | _filter_qemu_io
75$QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io
76$QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io
77
78echo
79echo "== overwriting zero cluster =="
80$QEMU_IO -c "write -P 0xa 60k 8k" "$TEST_IMG" | _filter_qemu_io
81$QEMU_IO -c "write -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io
82$QEMU_IO -c "write -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io
83$QEMU_IO -c "write -P 0xd 252k 8k" "$TEST_IMG" | _filter_qemu_io
84$QEMU_IO -c "write -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io
85
86_check_test_img
87
88echo
89echo "== verifying patterns (4) =="
90$QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io
91$QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io
92$QEMU_IO -c "read -P 0xb 64k 8k" "$TEST_IMG" | _filter_qemu_io
93$QEMU_IO -c "read -P 0x0 72k 4k" "$TEST_IMG" | _filter_qemu_io
94$QEMU_IO -c "read -P 0xc 76k 4k" "$TEST_IMG" | _filter_qemu_io
95$QEMU_IO -c "read -P 0x0 80k 168k" "$TEST_IMG" | _filter_qemu_io
96$QEMU_IO -c "read -P 0xe 248k 8k" "$TEST_IMG" | _filter_qemu_io
97$QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io
98$QEMU_IO -c "read -P 0x55 260k 64k" "$TEST_IMG" | _filter_qemu_io
99
100echo
101echo "== re-zeroing overwritten area =="
102$QEMU_IO -c "write -z 64k 192k" "$TEST_IMG" | _filter_qemu_io
103
104_check_test_img
105
106echo
107echo "== verifying patterns (5) =="
108$QEMU_IO -c "read -P 0x55 0 60k" "$TEST_IMG" | _filter_qemu_io
109$QEMU_IO -c "read -P 0xa 60k 4k" "$TEST_IMG" | _filter_qemu_io
110$QEMU_IO -c "read -P 0x0 64k 192k" "$TEST_IMG" | _filter_qemu_io
111$QEMU_IO -c "read -P 0xd 256k 4k" "$TEST_IMG" | _filter_qemu_io
112$QEMU_IO -c "read -P 0x55 260k 253k" "$TEST_IMG" | _filter_qemu_io
113$QEMU_IO -c "read -P 0x0 513k 13k" "$TEST_IMG" | _filter_qemu_io
114$QEMU_IO -c "read -P 0x55 526k 498k" "$TEST_IMG" | _filter_qemu_io
115
116# success, all done
117echo "*** done"
118rm -f $seq.full
119status=0
120