| 1 | #!/usr/bin/env bash |
| 2 | # group: rw backing auto quick |
| 3 | # |
| 4 | # Test qemu-img rebase with compression |
| 5 | # |
| 6 | # Copyright (c) 2023 Virtuozzo International GmbH. |
| 7 | # |
| 8 | # This program is free software; you can redistribute it and/or modify |
| 9 | # it under the terms of the GNU General Public License as published by |
| 10 | # the Free Software Foundation; either version 2 of the License, or |
| 11 | # (at your option) any later version. |
| 12 | # |
| 13 | # This program is distributed in the hope that it will be useful, |
| 14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | # GNU General Public License for more details. |
| 17 | # |
| 18 | # You should have received a copy of the GNU General Public License |
| 19 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | # |
| 21 | |
| 22 | # creator |
| 23 | owner=andrey.drobyshev@virtuozzo.com |
| 24 | |
| 25 | seq=`basename $0` |
| 26 | echo "QA output created by $seq" |
| 27 | |
| 28 | status=1 # failure is the default! |
| 29 | |
| 30 | _cleanup() |
| 31 | { |
| 32 | _cleanup_test_img |
| 33 | _rm_test_img "$TEST_IMG.base" |
| 34 | _rm_test_img "$TEST_IMG.itmd" |
| 35 | } |
| 36 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| 37 | |
| 38 | # get standard environment, filters and checks |
| 39 | . ./common.rc |
| 40 | . ./common.filter |
| 41 | |
| 42 | _supported_fmt qcow2 |
| 43 | _supported_proto file |
| 44 | _supported_os Linux |
| 45 | |
| 46 | # Want the size divisible by 2 and 3 |
| 47 | size=$(( 48 * 1024 * 1024 )) |
| 48 | half_size=$(( size / 2 )) |
| 49 | third_size=$(( size / 3 )) |
| 50 | |
| 51 | # 1. "qemu-img rebase -c" should refuse working with any format which doesn't |
| 52 | # support compression. We only check "-f raw" here. |
| 53 | echo |
| 54 | echo "=== Testing compressed rebase format compatibility ===" |
| 55 | echo |
| 56 | |
| 57 | $QEMU_IMG create -f raw "$TEST_IMG" "$size" | _filter_img_create |
| 58 | $QEMU_IMG rebase -c -f raw -b "" "$TEST_IMG" |
| 59 | |
| 60 | # 2. Write the 1st half of $size to backing file (compressed), 2nd half -- to |
| 61 | # the top image (also compressed). Rebase the top image onto no backing file, |
| 62 | # with compression (i.e. "qemu-img -c -b ''"). Check that the resulting image |
| 63 | # has the written data preserved, and "qemu-img check" reports 100% clusters |
| 64 | # as compressed. |
| 65 | echo |
| 66 | echo "=== Testing rebase with compression onto no backing file ===" |
| 67 | echo |
| 68 | |
| 69 | TEST_IMG="$TEST_IMG.base" _make_test_img $size |
| 70 | _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $size |
| 71 | |
| 72 | $QEMU_IO -c "write -c -P 0xaa 0 $half_size" "$TEST_IMG.base" | _filter_qemu_io |
| 73 | $QEMU_IO -c "write -c -P 0xbb $half_size $half_size" "$TEST_IMG" \ |
| 74 | | _filter_qemu_io |
| 75 | |
| 76 | $QEMU_IMG rebase -c -f $IMGFMT -b "" "$TEST_IMG" |
| 77 | |
| 78 | $QEMU_IO -c "read -P 0xaa 0 $half_size" "$TEST_IMG" | _filter_qemu_io |
| 79 | $QEMU_IO -c "read -P 0xbb $half_size $half_size" "$TEST_IMG" | _filter_qemu_io |
| 80 | |
| 81 | $QEMU_IMG check "$TEST_IMG" | _filter_testdir |
| 82 | |
| 83 | # 3. Same as the previous one, but with raw backing file (hence write to |
| 84 | # the backing is uncompressed). |
| 85 | echo |
| 86 | echo "=== Testing rebase with compression with raw backing file ===" |
| 87 | echo |
| 88 | |
| 89 | $QEMU_IMG create -f raw "$TEST_IMG.base" "$half_size" | _filter_img_create |
| 90 | _make_test_img -b "$TEST_IMG.base" -F raw $size |
| 91 | |
| 92 | $QEMU_IO -f raw -c "write -P 0xaa 0 $half_size" "$TEST_IMG.base" \ |
| 93 | | _filter_qemu_io |
| 94 | $QEMU_IO -c "write -c -P 0xbb $half_size $half_size" \ |
| 95 | "$TEST_IMG" | _filter_qemu_io |
| 96 | |
| 97 | $QEMU_IMG rebase -c -f $IMGFMT -b "" "$TEST_IMG" |
| 98 | |
| 99 | $QEMU_IO -c "read -P 0xaa 0 $half_size" "$TEST_IMG" | _filter_qemu_io |
| 100 | $QEMU_IO -c "read -P 0xbb $half_size $half_size" "$TEST_IMG" | _filter_qemu_io |
| 101 | |
| 102 | $QEMU_IMG check "$TEST_IMG" | _filter_testdir |
| 103 | |
| 104 | # 4. Create a backing chain base<--itmd<--img, filling 1st, 2nd and 3rd |
| 105 | # thirds of them, respectively (with compression). Rebase img onto base, |
| 106 | # effectively deleting itmd from the chain, and check that written data is |
| 107 | # preserved in the resulting image. Also check that "qemu-img check" reports |
| 108 | # 100% clusters as compressed. |
| 109 | echo |
| 110 | echo "=== Testing compressed rebase removing single delta from the chain ===" |
| 111 | echo |
| 112 | |
| 113 | TEST_IMG="$TEST_IMG.base" _make_test_img $size |
| 114 | TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $size |
| 115 | _make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $size |
| 116 | |
| 117 | $QEMU_IO -c "write -c -P 0xaa 0 $third_size" \ |
| 118 | "$TEST_IMG.base" | _filter_qemu_io |
| 119 | $QEMU_IO -c "write -c -P 0xbb $third_size $third_size" \ |
| 120 | "$TEST_IMG.itmd" | _filter_qemu_io |
| 121 | $QEMU_IO -c "write -c -P 0xcc $((third_size * 2 )) $third_size" \ |
| 122 | "$TEST_IMG" | _filter_qemu_io |
| 123 | |
| 124 | $QEMU_IMG rebase -c -f $IMGFMT -b "$TEST_IMG.base" -F $IMGFMT "$TEST_IMG" |
| 125 | |
| 126 | $QEMU_IO -c "read -P 0xaa 0 $third_size" "$TEST_IMG" | _filter_qemu_io |
| 127 | $QEMU_IO -c "read -P 0xbb $third_size $third_size" \ |
| 128 | "$TEST_IMG" | _filter_qemu_io |
| 129 | $QEMU_IO -c "read -P 0xcc $(( third_size * 2 )) $third_size" \ |
| 130 | "$TEST_IMG" | _filter_qemu_io |
| 131 | |
| 132 | $QEMU_IMG check "$TEST_IMG" | _filter_testdir |
| 133 | |
| 134 | # 5. Create one-cluster backing and overlay images, and fill only the first |
| 135 | # (half - 1) bytes of the backing with data (uncompressed). Rebase the |
| 136 | # overlay onto no backing file with compression. Check that data is still |
| 137 | # read correctly, and that cluster is now really compressed ("qemu-img check" |
| 138 | # reports 100% clusters as compressed. |
| 139 | echo |
| 140 | echo "=== Testing compressed rebase with unaligned unmerged data ===" |
| 141 | echo |
| 142 | |
| 143 | CLUSTER_SIZE=65536 |
| 144 | |
| 145 | TEST_IMG="$TEST_IMG.base" _make_test_img $CLUSTER_SIZE |
| 146 | _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $CLUSTER_SIZE |
| 147 | |
| 148 | $QEMU_IO -c "write -P 0xaa 0 $(( CLUSTER_SIZE / 2 - 1 ))" $TEST_IMG.base \ |
| 149 | | _filter_qemu_io |
| 150 | |
| 151 | $QEMU_IMG rebase -c -f $IMGFMT -b "" "$TEST_IMG" |
| 152 | |
| 153 | $QEMU_IO -c "read -P 0xaa 0 $(( CLUSTER_SIZE / 2 - 1 ))" "$TEST_IMG" \ |
| 154 | | _filter_qemu_io |
| 155 | $QEMU_IO -c \ |
| 156 | "read -P 0x00 $(( CLUSTER_SIZE / 2 - 1 )) $(( CLUSTER_SIZE / 2 + 1 ))" \ |
| 157 | "$TEST_IMG" | _filter_qemu_io |
| 158 | |
| 159 | $QEMU_IMG check "$TEST_IMG" | _filter_testdir |
| 160 | |
| 161 | # success, all done |
| 162 | echo |
| 163 | echo '*** done' |
| 164 | rm -f $seq.full |
| 165 | status=0 |