1#!/usr/bin/env bash 2# 3# Test qemu-img convert --salvage 4# 5# Copyright (C) 2019 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=mreitz@redhat.com 23 24seq=$(basename $0) 25echo "QA output created by $seq" 26 27status=1 # failure is the default! 28 29_cleanup() 30{ 31 _cleanup_test_img 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment, filters and checks 36. ./common.rc 37. ./common.filter 38. ./common.qemu 39 40_supported_fmt generic 41_supported_proto file 42_supported_os Linux 43_unsupported_imgopts "subformat=streamOptimized" 44 45if [ "$IMGOPTSSYNTAX" = "true" ]; then 46 # We use json:{} filenames here, so we cannot work with additional options. 47 _unsupported_fmt $IMGFMT 48else 49 # With VDI, the output is ordered differently. Just disable it. 50 _unsupported_fmt vdi 51fi 52 53 54TEST_IMG="$TEST_IMG.orig" _make_test_img 64M 55 56$QEMU_IO -c 'write -P 42 0 64M' "$TEST_IMG.orig" | _filter_qemu_io 57 58 59sector_size=512 60 61# Offsets on which to fail block-status. Keep in ascending order so 62# the indexing done by _filter_offsets will appear in ascending order 63# in the output as well. 64status_fail_offsets="$((16 * 1024 * 1024 + 8192)) 65 $((33 * 1024 * 1024 + 512))" 66 67# Offsets on which to fail reads. Keep in ascending order for the 68# same reason. 69# The second element is shared with $status_fail_offsets on purpose. 70# Starting with the third element, we test what happens when a 71# continuous range of sectors is inaccessible. 72read_fail_offsets="$((32 * 1024 * 1024 - 65536)) 73 $((33 * 1024 * 1024 + 512)) 74 $(seq $((34 * 1024 * 1024)) $sector_size \ 75 $((34 * 1024 * 1024 + 4096 - $sector_size)))" 76 77 78# blkdebug must be above the format layer so it can intercept all 79# block-status events 80source_img="json:{'driver': 'blkdebug', 81 'image': { 82 'driver': '$IMGFMT', 83 'file': { 84 'driver': 'file', 85 'filename': '$TEST_IMG.orig' 86 } 87 }, 88 'inject-error': [" 89 90for ofs in $status_fail_offsets 91do 92 source_img+="{ 'event': 'none', 93 'iotype': 'block-status', 94 'errno': 5, 95 'sector': $((ofs / sector_size)) }," 96done 97 98for ofs in $read_fail_offsets 99do 100 source_img+="{ 'event': 'none', 101 'iotype': 'read', 102 'errno': 5, 103 'sector': $((ofs / sector_size)) }," 104done 105 106# Remove the trailing comma and terminate @inject-error and json:{} 107source_img="${source_img%,} ] }" 108 109 110echo 111 112 113_filter_offsets() { 114 filters= 115 116 index=0 117 for ofs in $1 118 do 119 filters+=" -e s/$ofs/status_fail_offset_$index/" 120 index=$((index + 1)) 121 done 122 123 index=0 124 for ofs in $2 125 do 126 filters+=" -e s/$ofs/read_fail_offset_$index/" 127 index=$((index + 1)) 128 done 129 130 sed $filters 131} 132 133# While determining the number of allocated sectors in the input 134# image, we should see one block status warning per element of 135# $status_fail_offsets. 136# 137# Then, the image is read. Since the block status is queried in 138# basically the same way, the same warnings as in the previous step 139# should reappear. Interleaved with those we should see a read 140# warning per element of $read_fail_offsets. 141# Note that $read_fail_offsets and $status_fail_offsets share an 142# element (read_fail_offset_1 == status_fail_offset_1), so 143# "status_fail_offset_1" in the output is the same as 144# "read_fail_offset_1". 145$QEMU_IMG convert --salvage "$source_img" "$TEST_IMG" 2>&1 \ 146 | _filter_offsets "$status_fail_offsets" "$read_fail_offsets" 147 148echo 149 150# The offsets where the block status could not be determined should 151# have been treated as containing data and thus should be correct in 152# the output image. 153# The offsets where reading failed altogether should be 0. Make them 154# 0 in the input image, too, so we can compare both images. 155for ofs in $read_fail_offsets 156do 157 $QEMU_IO -c "write -z $ofs $sector_size" "$TEST_IMG.orig" \ 158 | _filter_qemu_io \ 159 | _filter_offsets '' "$read_fail_offsets" 160done 161 162echo 163 164# These should be equal now. 165$QEMU_IMG compare "$TEST_IMG.orig" "$TEST_IMG" 166 167 168# success, all done 169echo "*** done" 170rm -f $seq.full 171status=0 172