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 23owner=mreitz@redhat.com 24 25seq="$(basename $0)" 26echo "QA output created by $seq" 27 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33 _rm_test_img "$TEST_IMG.copy" 34} 35trap "_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 47TEST_IMG_REL=$(basename "$TEST_IMG") 48 49echo 50echo '=== Reconstructable filename ===' 51echo 52 53TEST_IMG="$TEST_IMG.base" _make_test_img 64M 54_make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT 64M 55# qemu should be able to reconstruct the filename, so relative backing names 56# should work 57# (We have to filter the backing file format because vmdk always 58# reports it (as vmdk), whereas other image formats would do so only 59# with the backing_fmt creation option, which neither vmdk nor qcow 60# support) 61TEST_IMG="json:{'driver':'$IMGFMT','file':{'driver':'file','filename':'$TEST_IMG'}}" \ 62 _img_info | _filter_img_info | grep -v 'backing file format' 63 64echo 65echo '=== Non-reconstructable filename ===' 66echo 67 68# Across blkdebug without a config file, you cannot reconstruct filenames, so 69# qemu is incapable of knowing the directory of the top image from the filename 70# alone. However, using bdrv_dirname(), it should still work. 71# (Filter out the json:{} filename so this test works with external data files) 72TEST_IMG="json:{ 73 'driver': '$IMGFMT', 74 'file': { 75 'driver': 'blkdebug', 76 'image': { 77 'driver': 'file', 78 'filename': '$TEST_IMG' 79 }, 80 'set-state': [ 81 { 82 'event': 'read_aio', 83 'new_state': 42 84 } 85 ] 86 } 87}" _img_info | _filter_img_info | grep -v 'backing file format' \ 88 | _filter_json_filename 89 90echo 91echo '=== Backing name is always relative to the backed image ===' 92echo 93 94# omit the image size; it should work anyway 95_make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT 96 97echo 98echo '=== Nodes without a common directory ===' 99echo 100 101cp "$TEST_IMG" "$TEST_IMG.copy" 102 103# Should inform us that the actual path of the backing file cannot be determined 104TEST_IMG="json:{ 105 'driver': '$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 125echo '*** done' 126rm -f $seq.full 127status=0 128