2 # group: rw backing auto quick
4 # When using a backing file for the output image in qemu-img convert,
5 # the backing file clusters must not copied. The data must still be
8 # Copyright (C) 2009 Red Hat, Inc.
10 # This program is free software; you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation; either version 2 of the License, or
13 # (at your option) any later version.
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
20 # You should have received a copy of the GNU General Public License
21 # along with this program. If not, see <http://www.gnu.org/licenses/>.
25 owner=kwolf@redhat.com
28 echo "QA output created by $seq"
30 status=1 # failure is the default!
35 _rm_test_img "$TEST_IMG.base"
36 _rm_test_img "$TEST_IMG.orig"
38 trap "_cleanup; exit \$status" 0 1 2 3 15
40 # get standard environment, filters and checks
45 # Any format supporting backing files
46 _supported_fmt qcow qcow2 vmdk qed
49 _unsupported_imgopts "subformat=monolithicFlat" \
50 "subformat=twoGbMaxExtentFlat" \
51 "subformat=twoGbMaxExtentSparse" \
52 "subformat=streamOptimized"
54 TEST_OFFSETS="0 4294967296"
57 TEST_IMG_SAVE="$TEST_IMG"
58 TEST_IMG="$TEST_IMG.base"
62 echo "Filling base image"
65 for offset in $TEST_OFFSETS; do
66 # Some clusters with alternating backing file/image file reads
67 io_pattern writev $(( offset )) 512 1024 64 42
69 # Complete backing clusters
70 io_pattern writev $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42
74 echo "Creating test image with backing file"
77 TEST_IMG="$TEST_IMG_SAVE.orig"
78 _make_test_img -b "$TEST_IMG_SAVE.base" -F $IMGFMT 6G
80 echo "Filling test image"
83 for offset in $TEST_OFFSETS; do
84 # Some clusters with alternating backing file/image file reads
85 io_pattern writev $(( offset + 512 )) 512 1024 64 43
87 # Complete test image clusters
88 io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43
92 TEST_IMG="$TEST_IMG_SAVE"
94 # Test the conversion twice: One test with the old-style -B option and another
95 # one with -o backing_file
97 for backing_option in "-B " "-o backing_file="; do
100 echo Testing conversion with $backing_option"$TEST_IMG.base" | _filter_testdir | _filter_imgfmt
102 $QEMU_IMG convert -f $IMGFMT -O $IMGFMT $backing_option"$TEST_IMG.base" \
103 -o backing_fmt=$IMGFMT "$TEST_IMG.orig" "$TEST_IMG"
105 echo "Checking if backing clusters are allocated when they shouldn't"
107 for offset in $TEST_OFFSETS; do
108 # Complete backing clusters
109 is_allocated $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1
115 for offset in $TEST_OFFSETS; do
116 # Some clusters with alternating backing file/image file reads
117 io_pattern readv $(( offset )) 512 1024 64 42
118 io_pattern readv $(( offset + 512 )) 512 1024 64 43
120 # Complete test image clusters
121 io_pattern readv $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42
122 io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43
125 io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1