2 # group: rw auto backing quick
4 # Test case for relative backing file names in complex BDS trees
6 # Copyright (C) 2014 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=hreitz@redhat.com
26 echo "QA output created by $seq"
28 status=1 # failure is the default!
33 _rm_test_img "$TEST_IMG.copy"
35 trap "_cleanup; exit \$status" 0 1 2 3 15
37 # get standard environment, filters and checks
41 # Any format supporting backing files
42 _supported_fmt qed qcow qcow2 vmdk
44 _unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat" \
45 "subformat=twoGbMaxExtentSparse"
47 TEST_IMG_REL=$(basename "$TEST_IMG")
50 echo '=== Reconstructable filename ==='
53 TEST_IMG="$TEST_IMG.base" _make_test_img 64M
54 _make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT 64M
55 # qemu should be able to reconstruct the filename, so relative backing names
57 # (We have to filter the backing file format because vmdk always
58 # reports it (as vmdk), whereas other image formats would do so only
59 # with the backing_fmt creation option, which neither vmdk nor qcow
61 TEST_IMG="json:{'driver':'$IMGFMT','file':{'driver':'file','filename':'$TEST_IMG'}}" \
62 _img_info | _filter_img_info | grep -v 'backing file format'
65 echo '=== Non-reconstructable filename ==='
68 # Across blkdebug without a config file, you cannot reconstruct filenames, so
69 # qemu is incapable of knowing the directory of the top image from the filename
70 # alone. However, using bdrv_dirname(), it should still work.
71 # (Filter out the json:{} filename so this test works with external data files)
78 'filename': '$TEST_IMG'
87 }" _img_info | _filter_img_info | grep -v 'backing file format' \
88 | _filter_json_filename
91 echo '=== Backing name is always relative to the backed image ==='
94 # omit the image size; it should work anyway
95 _make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT
98 echo '=== Nodes without a common directory ==='
101 cp "$TEST_IMG" "$TEST_IMG.copy"
103 # Should inform us that the actual path of the backing file cannot be determined
112 'filename': '$TEST_IMG'
116 'filename': '$TEST_IMG.copy'
120 }" _img_info | _filter_img_info | grep -v 'backing file format' \
121 | _filter_json_filename