175 lines
5 KiB
Bash
Executable file
175 lines
5 KiB
Bash
Executable file
#!/usr/bin/env bash
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# group: rw auto quick
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#
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# Test qemu-img convert --salvage
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#
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# Copyright (C) 2019 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=hreitz@redhat.com
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seq=$(basename $0)
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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. ./common.qemu
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_supported_fmt generic
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_supported_proto file
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_supported_os Linux
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_unsupported_imgopts "subformat=streamOptimized"
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if [ "$IMGOPTSSYNTAX" = "true" ]; then
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# We use json:{} filenames here, so we cannot work with additional options.
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_unsupported_fmt $IMGFMT
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else
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# - With VDI, the output is ordered differently. Just disable it.
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# - VHDX has large clusters; because qemu-img convert tries to
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# align the requests to the cluster size, the output is ordered
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# differently, so disable it, too.
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_unsupported_fmt vdi vhdx
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fi
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TEST_IMG="$TEST_IMG.orig" _make_test_img 64M
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$QEMU_IO -c 'write -P 42 0 64M' "$TEST_IMG.orig" | _filter_qemu_io
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sector_size=512
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# Offsets on which to fail block-status. Keep in ascending order so
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# the indexing done by _filter_offsets will appear in ascending order
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# in the output as well.
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status_fail_offsets="$((16 * 1024 * 1024 + 8192))
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$((33 * 1024 * 1024 + 512))"
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# Offsets on which to fail reads. Keep in ascending order for the
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# same reason.
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# The second element is shared with $status_fail_offsets on purpose.
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# Starting with the third element, we test what happens when a
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# continuous range of sectors is inaccessible.
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read_fail_offsets="$((32 * 1024 * 1024 - 65536))
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$((33 * 1024 * 1024 + 512))
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$(seq $((34 * 1024 * 1024)) $sector_size \
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$((34 * 1024 * 1024 + 4096 - $sector_size)))"
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# blkdebug must be above the format layer so it can intercept all
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# block-status events
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source_img="json:{'driver': 'blkdebug',
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'image': {
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'driver': '$IMGFMT',
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'file': {
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'driver': 'file',
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'filename': '$TEST_IMG.orig'
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}
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},
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'inject-error': ["
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for ofs in $status_fail_offsets
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do
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source_img+="{ 'event': 'none',
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'iotype': 'block-status',
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'errno': 5,
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'sector': $((ofs / sector_size)) },"
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done
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for ofs in $read_fail_offsets
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do
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source_img+="{ 'event': 'none',
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'iotype': 'read',
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'errno': 5,
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'sector': $((ofs / sector_size)) },"
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done
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# Remove the trailing comma and terminate @inject-error and json:{}
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source_img="${source_img%,} ] }"
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echo
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_filter_offsets() {
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filters=
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index=0
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for ofs in $1
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do
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filters+=" -e s/$ofs/status_fail_offset_$index/"
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index=$((index + 1))
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done
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index=0
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for ofs in $2
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do
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filters+=" -e s/$ofs/read_fail_offset_$index/"
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index=$((index + 1))
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done
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sed $filters
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}
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# While determining the number of allocated sectors in the input
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# image, we should see one block status warning per element of
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# $status_fail_offsets.
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#
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# Then, the image is read. Since the block status is queried in
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# basically the same way, the same warnings as in the previous step
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# should reappear. Interleaved with those we should see a read
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# warning per element of $read_fail_offsets.
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# Note that $read_fail_offsets and $status_fail_offsets share an
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# element (read_fail_offset_1 == status_fail_offset_1), so
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# "status_fail_offset_1" in the output is the same as
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# "read_fail_offset_1".
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$QEMU_IMG convert --salvage "$source_img" "$TEST_IMG" 2>&1 \
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| _filter_offsets "$status_fail_offsets" "$read_fail_offsets"
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echo
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# The offsets where the block status could not be determined should
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# have been treated as containing data and thus should be correct in
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# the output image.
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# The offsets where reading failed altogether should be 0. Make them
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# 0 in the input image, too, so we can compare both images.
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for ofs in $read_fail_offsets
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do
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$QEMU_IO -c "write -z $ofs $sector_size" "$TEST_IMG.orig" \
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| _filter_qemu_io \
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| _filter_offsets '' "$read_fail_offsets"
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done
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echo
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# These should be equal now.
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$QEMU_IMG compare "$TEST_IMG.orig" "$TEST_IMG"
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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