cf29a570a7
On read operations when this parameter is set and some replicas are corrupted while quorum can be reached quorum will proceed to rewrite the correct version of the data to fix the corrupted replicas. This will shine with SSD where the FTL will remap the same block at another place on rewrite. Signed-off-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
163 lines
4.1 KiB
Bash
Executable File
163 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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#
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# Test Quorum block driver
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#
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# Copyright (C) 2013 Nodalink, SARL.
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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=benoit@irqsave.net
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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rm -rf $TEST_DIR/1.raw
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rm -rf $TEST_DIR/2.raw
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rm -rf $TEST_DIR/3.raw
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt raw
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_supported_proto generic
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_supported_os Linux
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function do_run_qemu()
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{
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echo Testing: "$@" | _filter_imgfmt
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$QEMU -nographic -qmp stdio -serial none "$@"
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echo
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}
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function run_qemu()
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{
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do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp | _filter_qemu_io
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}
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test_quorum=$($QEMU_IMG --help|grep quorum)
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[ "$test_quorum" = "" ] && _supported_fmt quorum
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quorum="file.driver=quorum,file.children.0.file.filename=$TEST_DIR/1.raw"
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quorum="$quorum,file.children.1.file.filename=$TEST_DIR/2.raw"
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quorum="$quorum,file.children.2.file.filename=$TEST_DIR/3.raw,file.vote-threshold=2"
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echo
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echo "== creating quorum files =="
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size=10M
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TEST_IMG="$TEST_DIR/1.raw" _make_test_img $size
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TEST_IMG="$TEST_DIR/2.raw" _make_test_img $size
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TEST_IMG="$TEST_DIR/3.raw" _make_test_img $size
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echo
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echo "== writing images =="
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$QEMU_IO -c "open -o $quorum" -c "write -P 0x32 0 $size" | _filter_qemu_io
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echo
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echo "== checking quorum write =="
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$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/1.raw" | _filter_qemu_io
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$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io
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$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/3.raw" | _filter_qemu_io
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echo
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echo "== corrupting image =="
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$QEMU_IO -c "write -P 0x42 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io
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echo
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echo "== checking quorum correction =="
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$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io
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echo
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echo "== checking mixed reference/option specification =="
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run_qemu -drive "file=$TEST_DIR/2.raw,format=$IMGFMT,if=none,id=drive2" <<EOF
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{ "execute": "qmp_capabilities" }
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{ "execute": "blockdev-add",
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"arguments": {
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"options": {
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"driver": "quorum",
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"id": "drive0-quorum",
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"vote-threshold": 2,
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"children": [
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{
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"driver": "raw",
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"file": {
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"driver": "file",
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"filename": "$TEST_DIR/1.raw"
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}
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},
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"drive2",
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{
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"driver": "raw",
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"file": {
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"driver": "file",
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"filename": "$TEST_DIR/3.raw"
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}
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}
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]
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}
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}
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}
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{ "execute": "human-monitor-command",
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"arguments": {
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"command-line": 'qemu-io drive0-quorum "read -P 0x32 0 $size"'
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}
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}
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{ "execute": "quit" }
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EOF
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echo
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echo "== using quorum rewrite corrupted mode =="
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quorum="$quorum,file.rewrite-corrupted=on"
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$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io
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echo
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echo "== checking that quorum has corrected the corrupted file =="
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$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io
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echo
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echo "== breaking quorum =="
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$QEMU_IO -c "write -P 0x41 0 $size" "$TEST_DIR/1.raw" | _filter_qemu_io
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$QEMU_IO -c "write -P 0x42 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io
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echo
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echo "== checking that quorum is broken =="
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$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io
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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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