| 1 | #!/usr/bin/env bash |
| 2 | # group: rw auto backing quick |
| 3 | # |
| 4 | # Test case for relative backing file names in complex BDS trees |
| 5 | # |
| 6 | # Copyright (C) 2014 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 |
| 23 | owner=hreitz@redhat.com |
| 24 | |
| 25 | seq="$(basename $0)" |
| 26 | echo "QA output created by $seq" |
| 27 | |
| 28 | status=1 # failure is the default! |
| 29 | |
| 30 | _cleanup() |
| 31 | { |
| 32 | _cleanup_test_img |
| 33 | _rm_test_img "$TEST_IMG.copy" |
| 34 | } |
| 35 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| 36 | |
| 37 | # get standard environment, filters and checks |
| 38 | . ./common.rc |
| 39 | . ./common.filter |
| 40 | |
| 41 | # Any format supporting backing files |
| 42 | _supported_fmt qed qcow qcow2 vmdk |
| 43 | _supported_proto file |
| 44 | _unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat" \ |
| 45 | "subformat=twoGbMaxExtentSparse" |
| 46 | |
| 47 | TEST_IMG_REL=$(basename "$TEST_IMG") |
| 48 | |
| 49 | echo |
| 50 | echo '=== Reconstructable filename ===' |
| 51 | echo |
| 52 | |
| 53 | TEST_IMG="$TEST_IMG.base" _make_test_img 64M |
| 54 | _make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT 64M |
| 55 | # qemu should be able to reconstruct the filename, so relative backing names |
| 56 | # should work |
| 57 | # (We have to filter the backing file format because vmdk always |
| 58 | # reports it (as vmdk), whereas other image formats would do so only |
| 59 | # with the backing_fmt creation option, which neither vmdk nor qcow |
| 60 | # support) |
| 61 | TEST_IMG="json:{'driver':'$IMGFMT','file':{'driver':'file','filename':'$TEST_IMG'}}" \ |
| 62 | _img_info | _filter_img_info | grep -v 'backing file format' |
| 63 | |
| 64 | echo |
| 65 | echo '=== Non-reconstructable filename ===' |
| 66 | echo |
| 67 | |
| 68 | # Across blkdebug without a config file, you cannot reconstruct filenames, so |
| 69 | # qemu is incapable of knowing the directory of the top image from the filename |
| 70 | # alone. However, using bdrv_dirname(), it should still work. |
| 71 | # (Filter out the json:{} filename so this test works with external data files) |
| 72 | TEST_IMG="json:{ |
| 73 | 'driver': '$IMGFMT', |
| 74 | 'file': { |
| 75 | 'driver': 'blkdebug', |
| 76 | 'image': { |
| 77 | 'driver': 'file', |
| 78 | 'filename': '$TEST_IMG' |
| 79 | }, |
| 80 | 'set-state': [ |
| 81 | { |
| 82 | 'event': 'read_aio', |
| 83 | 'new_state': 42 |
| 84 | } |
| 85 | ] |
| 86 | } |
| 87 | }" _img_info | _filter_img_info | grep -v 'backing file format' \ |
| 88 | | _filter_json_filename |
| 89 | |
| 90 | echo |
| 91 | echo '=== Backing name is always relative to the backed image ===' |
| 92 | echo |
| 93 | |
| 94 | # omit the image size; it should work anyway |
| 95 | _make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT |
| 96 | |
| 97 | echo |
| 98 | echo '=== Nodes without a common directory ===' |
| 99 | echo |
| 100 | |
| 101 | cp "$TEST_IMG" "$TEST_IMG.copy" |
| 102 | |
| 103 | # Should inform us that the actual path of the backing file cannot be determined |
| 104 | TEST_IMG="json:{ |
| 105 | 'driver': '$IMGFMT', |
| 106 | 'file': { |
| 107 | 'driver': 'quorum', |
| 108 | 'vote-threshold': 1, |
| 109 | 'children': [ |
| 110 | { |
| 111 | 'driver': 'file', |
| 112 | 'filename': '$TEST_IMG' |
| 113 | }, |
| 114 | { |
| 115 | 'driver': 'file', |
| 116 | 'filename': '$TEST_IMG.copy' |
| 117 | } |
| 118 | ] |
| 119 | } |
| 120 | }" _img_info | _filter_img_info | grep -v 'backing file format' \ |
| 121 | | _filter_json_filename |
| 122 | |
| 123 | |
| 124 | # success, all done |
| 125 | echo '*** done' |
| 126 | rm -f $seq.full |
| 127 | status=0 |