Philippe Mathieu-Daudé | 11a82d1 | 2019-03-07 15:58:38 +0100 | [diff] [blame] | 1 | #!/usr/bin/env bash |
Vladimir Sementsov-Ogievskiy | 9dd003a | 2021-01-16 16:44:19 +0300 | [diff] [blame] | 2 | # group: rw auto backing |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 3 | # |
| 4 | # Commit changes into backing chains and empty the top image if the |
| 5 | # backing image is not explicitly specified |
| 6 | # |
| 7 | # Copyright (C) 2014 Red Hat, Inc. |
| 8 | # |
| 9 | # This program is free software; you can redistribute it and/or modify |
| 10 | # it under the terms of the GNU General Public License as published by |
| 11 | # the Free Software Foundation; either version 2 of the License, or |
| 12 | # (at your option) any later version. |
| 13 | # |
| 14 | # This program is distributed in the hope that it will be useful, |
| 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | # GNU General Public License for more details. |
| 18 | # |
| 19 | # You should have received a copy of the GNU General Public License |
| 20 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | # |
| 22 | |
| 23 | # creator |
| 24 | owner=mreitz@redhat.com |
| 25 | |
| 26 | seq="$(basename $0)" |
| 27 | echo "QA output created by $seq" |
| 28 | |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 29 | status=1 # failure is the default! |
| 30 | |
| 31 | _cleanup() |
| 32 | { |
| 33 | _cleanup_test_img |
| 34 | _rm_test_img "$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 | . ./common.pattern |
| 42 | |
| 43 | # Any format supporting backing files and bdrv_make_empty |
| 44 | _supported_fmt qcow qcow2 |
Max Reitz | 57284d2 | 2020-10-27 20:05:59 +0100 | [diff] [blame] | 45 | _supported_proto file fuse |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 46 | _supported_os Linux |
| 47 | |
| 48 | |
Eric Blake | a3e1505 | 2016-12-05 09:49:34 -0600 | [diff] [blame] | 49 | # Four main passes: |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 50 | # 0: Two-layer backing chain, commit to upper backing file (implicitly) |
| 51 | # (in this case, the top image will be emptied) |
| 52 | # 1: Two-layer backing chain, commit to upper backing file (explicitly) |
| 53 | # (in this case, the top image will implicitly stay unchanged) |
| 54 | # 2: Two-layer backing chain, commit to upper backing file (implicitly with -d) |
| 55 | # (in this case, the top image will explicitly stay unchanged) |
| 56 | # 3: Two-layer backing chain, commit to lower backing file |
| 57 | # (in this case, the top image will implicitly stay unchanged) |
| 58 | # |
| 59 | # 020 already tests committing, so this only tests whether image chains are |
| 60 | # working properly and that all images above the base are emptied; therefore, |
Eric Blake | a3e1505 | 2016-12-05 09:49:34 -0600 | [diff] [blame] | 61 | # no complicated patterns are necessary. Check near the 2G mark, as qcow2 |
| 62 | # has been buggy at that boundary in the past. |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 63 | for i in 0 1 2 3; do |
| 64 | |
| 65 | echo |
Daniel P. Berrange | 07ff948 | 2017-03-31 13:53:54 -0500 | [diff] [blame] | 66 | echo "=== Test pass $i ===" |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 67 | echo |
| 68 | |
Eric Blake | f82c5b1 | 2017-03-31 13:53:56 -0500 | [diff] [blame] | 69 | len=$((2100 * 1024 * 1024 + 512)) # larger than 2G, and not cluster aligned |
| 70 | TEST_IMG="$TEST_IMG.base" _make_test_img $len |
Eric Blake | b66ff2c | 2020-07-06 15:39:52 -0500 | [diff] [blame] | 71 | TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $len |
| 72 | _make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $len |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 73 | |
Eric Blake | f82c5b1 | 2017-03-31 13:53:56 -0500 | [diff] [blame] | 74 | $QEMU_IO -c "write -P 1 0x7ffd0000 192k" "$TEST_IMG.base" | _filter_qemu_io |
| 75 | $QEMU_IO -c "write -P 2 0x7ffe0000 128k" "$TEST_IMG.itmd" | _filter_qemu_io |
| 76 | $QEMU_IO -c "write -P 3 0x7fff0000 64k" "$TEST_IMG" | _filter_qemu_io |
| 77 | $QEMU_IO -c "write -P 4 $(($len - 512)) 512" "$TEST_IMG" | _filter_qemu_io |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 78 | |
| 79 | if [ $i -lt 3 ]; then |
| 80 | if [ $i == 0 ]; then |
| 81 | # -b "$TEST_IMG.itmd" should be the default (that is, committing to the |
| 82 | # first backing file in the chain) |
| 83 | $QEMU_IMG commit "$TEST_IMG" |
| 84 | elif [ $i == 1 ]; then |
| 85 | # explicitly specify the commit target (this should imply -d) |
| 86 | $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG" |
| 87 | else |
| 88 | # do not explicitly specify the commit target, but use -d to leave the |
| 89 | # top image unchanged |
| 90 | $QEMU_IMG commit -d "$TEST_IMG" |
| 91 | fi |
| 92 | |
| 93 | # Bottom should be unchanged |
Eric Blake | a3e1505 | 2016-12-05 09:49:34 -0600 | [diff] [blame] | 94 | $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io |
Eric Blake | f82c5b1 | 2017-03-31 13:53:56 -0500 | [diff] [blame] | 95 | $QEMU_IO -c "read -P 0 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 96 | |
| 97 | # Intermediate should contain changes from top |
Eric Blake | a3e1505 | 2016-12-05 09:49:34 -0600 | [diff] [blame] | 98 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io |
| 99 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io |
| 100 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io |
Eric Blake | f82c5b1 | 2017-03-31 13:53:56 -0500 | [diff] [blame] | 101 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.itmd" | _filter_qemu_io |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 102 | |
| 103 | # And in pass 0, the top image should be empty, whereas in both other passes |
| 104 | # it should be unchanged (which is both checked by qemu-img map) |
| 105 | else |
| 106 | $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG" |
| 107 | |
| 108 | # Bottom should contain all changes |
Eric Blake | a3e1505 | 2016-12-05 09:49:34 -0600 | [diff] [blame] | 109 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io |
| 110 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io |
| 111 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io |
Eric Blake | f82c5b1 | 2017-03-31 13:53:56 -0500 | [diff] [blame] | 112 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 113 | |
| 114 | # Both top and intermediate should be unchanged |
| 115 | fi |
| 116 | |
| 117 | $QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map |
| 118 | $QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map |
| 119 | $QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map |
| 120 | |
| 121 | done |
Max Reitz | e6ea231 | 2014-10-24 15:57:42 +0200 | [diff] [blame] | 122 | |
| 123 | |
| 124 | # success, all done |
| 125 | echo "*** done" |
| 126 | rm -f $seq.full |
| 127 | status=0 |