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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