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 $seq" 26 27status=1 # failure is the default! 28 29_cleanup() 30{ 31 _cleanup_test_img 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment, filters and checks 36. ./common.rc 37. ./common.filter 38. ./common.qemu 39 40_supported_fmt generic 41_supported_proto file 42_supported_os Linux 43 44if [ "$IMGOPTSSYNTAX" = "true" ]; then 45 # We use json:{} filenames here, so we cannot work with additional options. 46 _unsupported_fmt $IMGFMT 47else 48 # With VDI, the output is ordered differently. Just disable it. 49 _unsupported_fmt vdi 50fi 51 52 53TEST_IMG="$TEST_IMG.orig" _make_test_img 64M 54 55$QEMU_IO -c 'write -P 42 0 64M' "$TEST_IMG.orig" | _filter_qemu_io 56 57 58sector_size=512 59 60# Offsets on which to fail block-status. Keep in ascending order so 61# the indexing done by _filter_offsets will appear in ascending order 62# in the output as well. 63status_fail_offsets="$((16 * 1024 * 1024 + 8192)) 64 $((33 * 1024 * 1024 + 512))" 65 66# Offsets on which to fail reads. Keep in ascending order for the 67# same reason. 68# The second element is shared with $status_fail_offsets on purpose. 69# Starting with the third element, we test what happens when a 70# continuous range of sectors is inaccessible. 71read_fail_offsets="$((32 * 1024 * 1024 - 65536)) 72 $((33 * 1024 * 1024 + 512)) 73 $(seq $((34 * 1024 * 1024)) $sector_size \ 74 $((34 * 1024 * 1024 + 4096 - $sector_size)))" 75 76 77# blkdebug must be above the format layer so it can intercept all 78# block-status events 79source_img="json:{'driver': 'blkdebug', 80 'image': { 81 'driver': '$IMGFMT', 82 'file': { 83 'driver': 'file', 84 'filename': '$TEST_IMG.orig' 85 } 86 }, 87 'inject-error': [" 88 89for ofs in $status_fail_offsets 90do 91 source_img+="{ 'event': 'none', 92 'iotype': 'block-status', 93 'errno': 5, 94 'sector': $((ofs / sector_size)) }," 95done 96 97for ofs in $read_fail_offsets 98do 99 source_img+="{ 'event': 'none', 100 'iotype': 'read', 101 'errno': 5, 102 'sector': $((ofs / sector_size)) }," 103done 104 105# Remove the trailing comma and terminate @inject-error and json:{} 106source_img="${source_img%,} ] }" 107 108 109echo 110 111 112_filter_offsets() { 113 filters= 114 115 index=0 116 for ofs in $1 117 do 118 filters+=" -e s/$ofs/status_fail_offset_$index/" 119 index=$((index + 1)) 120 done 121 122 index=0 123 for ofs in $2 124 do 125 filters+=" -e s/$ofs/read_fail_offset_$index/" 126 index=$((index + 1)) 127 done 128 129 sed $filters 130} 131 132# While determining the number of allocated sectors in the input 133# image, we should see one block status warning per element of 134# $status_fail_offsets. 135# 136# Then, the image is read. Since the block status is queried in 137# basically the same way, the same warnings as in the previous step 138# should reappear. Interleaved with those we should see a read 139# warning per element of $read_fail_offsets. 140# Note that $read_fail_offsets and $status_fail_offsets share an 141# element (read_fail_offset_1 == status_fail_offset_1), so 142# "status_fail_offset_1" in the output is the same as 143# "read_fail_offset_1". 144$QEMU_IMG convert --salvage "$source_img" "$TEST_IMG" 2>&1 \ 145 | _filter_offsets "$status_fail_offsets" "$read_fail_offsets" 146 147echo 148 149# The offsets where the block status could not be determined should 150# have been treated as containing data and thus should be correct in 151# the output image. 152# The offsets where reading failed altogether should be 0. Make them 153# 0 in the input image, too, so we can compare both images. 154for ofs in $read_fail_offsets 155do 156 $QEMU_IO -c "write -z $ofs $sector_size" "$TEST_IMG.orig" \ 157 | _filter_qemu_io \ 158 | _filter_offsets '' "$read_fail_offsets" 159done 160 161echo 162 163# These should be equal now. 164$QEMU_IMG compare "$TEST_IMG.orig" "$TEST_IMG" 165 166 167# success, all done 168echo "*** done" 169rm -f $seq.full 170status=0 171