xref: /openbmc/qemu/tests/qemu-iotests/020 (revision e2d05011)
1#!/bin/bash
2#
3# Commit changes to backing file
4#
5# Copyright (C) 2009 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
27here=`pwd`
28tmp=/tmp/$$
29status=1	# failure is the default!
30
31_cleanup()
32{
33	_cleanup_test_img
34    rm -f "$TEST_IMG.base"
35    rm -f "$TEST_IMG.orig"
36}
37trap "_cleanup; exit \$status" 0 1 2 3 15
38
39# get standard environment, filters and checks
40. ./common.rc
41. ./common.filter
42. ./common.pattern
43
44# Any format supporting backing files
45_supported_fmt qcow qcow2 vmdk qed
46_supported_proto generic
47_supported_os Linux
48_unsupported_imgopts "subformat=monolithicFlat" \
49                     "subformat=twoGbMaxExtentFlat" \
50                     "subformat=twoGbMaxExtentSparse"
51
52# NFS does not support bdrv_reopen_prepare thus qemu-img commit fails.
53if [ "$IMGPROTO" = "nfs" ]; then
54    _notrun "image protocol $IMGPROTO does not support bdrv_commit"
55fi
56
57TEST_OFFSETS="0 4294967296"
58
59_make_test_img 6G
60
61echo "Filling base image"
62echo
63
64for offset in $TEST_OFFSETS; do
65    # Some clusters with alternating backing file/image file reads
66    io writev $(( offset )) 512 1024 64
67
68    # Complete backing clusters
69    io writev $(( offset  + 64 * 1024))  65536 65536 1
70done
71_check_test_img
72
73echo "Creating test image with backing file"
74echo
75
76mv "$TEST_IMG" "$TEST_IMG.base"
77_make_test_img -b "$TEST_IMG.base" 6G
78
79echo "Filling test image"
80echo
81
82for offset in $TEST_OFFSETS; do
83    # Some clusters with alternating backing file/image file reads
84    io writev $(( offset + 512 )) 512 1024 64
85
86    # Complete test image clusters
87    io writev $(( offset + 64 * 1024 + 65536))  65536 65536 1
88done
89_check_test_img
90
91$QEMU_IMG commit "$TEST_IMG"
92mv "$TEST_IMG.base" "$TEST_IMG"
93
94echo "Reading from the backing file"
95echo
96
97for offset in $TEST_OFFSETS; do
98    # Some clusters with alternating backing file/image file reads
99    io readv $(( offset )) 512 1024 64
100    io readv $(( offset + 512 )) 512 1024 64
101
102    # Complete test image clusters
103    io readv $(( offset  + 64 * 1024))  65536 65536 1
104    io readv $(( offset + 64 * 1024 + 65536))  65536 65536 1
105
106    # Empty sectors
107    io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1
108done
109_check_test_img
110
111# success, all done
112echo "*** done"
113rm -f $seq.full
114status=0
115