| 1 | #!/usr/bin/env bash |
| 2 | # group: rw quick |
| 3 | # |
| 4 | # Test drive-mirror with quorum |
| 5 | # |
| 6 | # The goal of this test is to check how the quorum driver reports |
| 7 | # regions that are known to read as zeroes (BDRV_BLOCK_ZERO). The idea |
| 8 | # is that drive-mirror will try the efficient representation of zeroes |
| 9 | # in the destination image instead of writing actual zeroes. |
| 10 | # |
| 11 | # Copyright (C) 2020 Igalia, S.L. |
| 12 | # Author: Alberto Garcia <berto@igalia.com> |
| 13 | # |
| 14 | # This program is free software; you can redistribute it and/or modify |
| 15 | # it under the terms of the GNU General Public License as published by |
| 16 | # the Free Software Foundation; either version 2 of the License, or |
| 17 | # (at your option) any later version. |
| 18 | # |
| 19 | # This program is distributed in the hope that it will be useful, |
| 20 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | # GNU General Public License for more details. |
| 23 | # |
| 24 | # You should have received a copy of the GNU General Public License |
| 25 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 26 | # |
| 27 | |
| 28 | # creator |
| 29 | owner=berto@igalia.com |
| 30 | |
| 31 | seq=`basename $0` |
| 32 | echo "QA output created by $seq" |
| 33 | |
| 34 | status=1 # failure is the default! |
| 35 | |
| 36 | _cleanup() |
| 37 | { |
| 38 | _rm_test_img "$TEST_IMG.0" |
| 39 | _rm_test_img "$TEST_IMG.1" |
| 40 | _rm_test_img "$TEST_IMG.2" |
| 41 | _rm_test_img "$TEST_IMG.3" |
| 42 | _cleanup_qemu |
| 43 | } |
| 44 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| 45 | |
| 46 | # get standard environment, filters and checks |
| 47 | . ./common.rc |
| 48 | . ./common.filter |
| 49 | . ./common.qemu |
| 50 | |
| 51 | _supported_fmt qcow2 |
| 52 | _supported_proto file |
| 53 | _supported_os Linux |
| 54 | _unsupported_imgopts cluster_size data_file |
| 55 | _require_drivers quorum |
| 56 | |
| 57 | echo |
| 58 | echo '### Create all images' # three source (quorum), one destination |
| 59 | echo |
| 60 | TEST_IMG="$TEST_IMG.0" _make_test_img -o cluster_size=64k 10M |
| 61 | TEST_IMG="$TEST_IMG.1" _make_test_img -o cluster_size=64k 10M |
| 62 | TEST_IMG="$TEST_IMG.2" _make_test_img -o cluster_size=64k 10M |
| 63 | TEST_IMG="$TEST_IMG.3" _make_test_img -o cluster_size=64k 10M |
| 64 | |
| 65 | quorum="driver=raw,file.driver=quorum,file.vote-threshold=2" |
| 66 | quorum="$quorum,file.children.0.file.filename=$TEST_IMG.0" |
| 67 | quorum="$quorum,file.children.1.file.filename=$TEST_IMG.1" |
| 68 | quorum="$quorum,file.children.2.file.filename=$TEST_IMG.2" |
| 69 | quorum="$quorum,file.children.0.driver=$IMGFMT" |
| 70 | quorum="$quorum,file.children.1.driver=$IMGFMT" |
| 71 | quorum="$quorum,file.children.2.driver=$IMGFMT" |
| 72 | |
| 73 | echo |
| 74 | echo '### Output of qemu-img map (empty quorum)' |
| 75 | echo |
| 76 | $QEMU_IMG map --image-opts $quorum | _filter_qemu_img_map |
| 77 | |
| 78 | # Now we write data to the quorum. All three images will read as |
| 79 | # zeroes in all cases, but with different ways to represent them |
| 80 | # (unallocated clusters, zero clusters, data clusters with zeroes) |
| 81 | # that will have an effect on how the data will be mirrored and the |
| 82 | # output of qemu-img map on the resulting image. |
| 83 | echo |
| 84 | echo '### Write data to the quorum' |
| 85 | echo |
| 86 | # Test 1: data regions surrounded by unallocated clusters. |
| 87 | # Three data regions, the largest one (0x30000) will be picked, end result: |
| 88 | # offset 0x10000, length 0x30000 -> data |
| 89 | $QEMU_IO -c "write -P 0 $((0x10000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io |
| 90 | $QEMU_IO -c "write -P 0 $((0x10000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io |
| 91 | $QEMU_IO -c "write -P 0 $((0x10000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io |
| 92 | |
| 93 | # Test 2: zero regions surrounded by data clusters. |
| 94 | # First we allocate the data clusters. |
| 95 | $QEMU_IO -c "open -o $quorum" -c "write -P 0 $((0x100000)) $((0x40000))" | _filter_qemu_io |
| 96 | |
| 97 | # Three zero regions, the smallest one (0x10000) will be picked, end result: |
| 98 | # offset 0x100000, length 0x10000 -> data |
| 99 | # offset 0x110000, length 0x10000 -> zeroes |
| 100 | # offset 0x120000, length 0x20000 -> data |
| 101 | $QEMU_IO -c "write -z $((0x110000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io |
| 102 | $QEMU_IO -c "write -z $((0x110000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io |
| 103 | $QEMU_IO -c "write -z $((0x110000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io |
| 104 | |
| 105 | # Test 3: zero clusters surrounded by unallocated clusters. |
| 106 | # Everything reads as zeroes, no effect on the end result. |
| 107 | $QEMU_IO -c "write -z $((0x150000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io |
| 108 | $QEMU_IO -c "write -z $((0x150000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io |
| 109 | $QEMU_IO -c "write -z $((0x150000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io |
| 110 | |
| 111 | # Test 4: mix of data and zero clusters. |
| 112 | # The zero region will be ignored in favor of the largest data region |
| 113 | # (0x20000), end result: |
| 114 | # offset 0x200000, length 0x20000 -> data |
| 115 | $QEMU_IO -c "write -P 0 $((0x200000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io |
| 116 | $QEMU_IO -c "write -z $((0x200000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io |
| 117 | $QEMU_IO -c "write -P 0 $((0x200000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io |
| 118 | |
| 119 | # Test 5: write data to a region and then zeroize it, doing it |
| 120 | # directly on the quorum device instead of the individual images. |
| 121 | # This has no effect on the end result but proves that the quorum driver |
| 122 | # supports 'write -z'. |
| 123 | $QEMU_IO -c "open -o $quorum" -c "write -P 1 $((0x250000)) $((0x10000))" | _filter_qemu_io |
| 124 | # Verify the data that we just wrote |
| 125 | $QEMU_IO -c "open -o $quorum" -c "read -P 1 $((0x250000)) $((0x10000))" | _filter_qemu_io |
| 126 | $QEMU_IO -c "open -o $quorum" -c "write -z $((0x250000)) $((0x10000))" | _filter_qemu_io |
| 127 | # Now it should read back as zeroes |
| 128 | $QEMU_IO -c "open -o $quorum" -c "read -P 0 $((0x250000)) $((0x10000))" | _filter_qemu_io |
| 129 | |
| 130 | echo |
| 131 | echo '### Launch the drive-mirror job' |
| 132 | echo |
| 133 | qemu_comm_method="qmp" _launch_qemu -drive if=virtio,"$quorum" |
| 134 | h=$QEMU_HANDLE |
| 135 | _send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" 'return' |
| 136 | |
| 137 | _send_qemu_cmd $h \ |
| 138 | "{'execute': 'drive-mirror', |
| 139 | 'arguments': {'device': 'virtio0', |
| 140 | 'format': '$IMGFMT', |
| 141 | 'target': '$TEST_IMG.3', |
| 142 | 'sync': 'full', |
| 143 | 'mode': 'existing' }}" \ |
| 144 | "BLOCK_JOB_READY.*virtio0" |
| 145 | |
| 146 | _send_qemu_cmd $h \ |
| 147 | "{ 'execute': 'block-job-complete', |
| 148 | 'arguments': { 'device': 'virtio0' } }" \ |
| 149 | 'BLOCK_JOB_COMPLETED' |
| 150 | |
| 151 | _send_qemu_cmd $h "{ 'execute': 'quit' }" '' |
| 152 | |
| 153 | echo |
| 154 | echo '### Output of qemu-img map (destination image)' |
| 155 | echo |
| 156 | $QEMU_IMG map "$TEST_IMG.3" | _filter_qemu_img_map |
| 157 | |
| 158 | # success, all done |
| 159 | echo "*** done" |
| 160 | rm -f $seq.full |
| 161 | status=0 |