| | 1 | #!/bin/bash |
| | 2 | # |
| | 3 | # Rebasing COW images |
| | 4 | # |
| | 5 | # Copyright (C) 2009 Red Hat, Inc. |
| | 6 | # |
| | 7 | # This program is free software; you can redistribute it and/or modify |
| | 8 | # it under the terms of the GNU General Public License as published by |
| | 9 | # the Free Software Foundation; either version 2 of the License, or |
| | 10 | # (at your option) any later version. |
| | 11 | # |
| | 12 | # This program is distributed in the hope that it will be useful, |
| | 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 15 | # GNU General Public License for more details. |
| | 16 | # |
| | 17 | # You should have received a copy of the GNU General Public License |
| | 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| | 19 | # |
| | 20 | |
| | 21 | # creator |
| | 22 | [email protected] |
| | 23 | |
| | 24 | seq=`basename $0` |
| | 25 | echo "QA output created by $seq" |
| | 26 | |
| | 27 | here=`pwd` |
| | 28 | tmp=/tmp/$$ |
| | 29 | status=1 # failure is the default! |
| | 30 | |
| | 31 | _cleanup() |
| | 32 | { |
| | 33 | _cleanup_test_img |
| | 34 | rm -f "$TEST_DIR/t.$IMGFMT.base_old" |
| | 35 | rm -f "$TEST_DIR/t.$IMGFMT.base_new" |
| | 36 | } |
| | 37 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| | 38 | |
| | 39 | # get standard environment, filters and checks |
| | 40 | . ./common.rc |
| | 41 | . ./common.filter |
| | 42 | . ./common.pattern |
| | 43 | |
| | 44 | # Currently only qcow2 and qed support rebasing |
| | 45 | _supported_fmt qcow2 qed |
| | 46 | _supported_proto generic |
| | 47 | _supported_os Linux |
| | 48 | |
| | 49 | CLUSTER_SIZE=65536 |
| | 50 | |
| | 51 | # Cluster allocations to be tested: |
| | 52 | # |
| | 53 | # Backing (old) 11 -- 11 -- 11 -- 11 -- |
| | 54 | # Backing (new) 22 22 -- -- 22 22 -- -- |
| | 55 | # COW image 33 33 33 33 -- -- -- -- |
| | 56 | # |
| | 57 | # The pattern is written twice to have both an alloc -> non-alloc and a |
| | 58 | # non-alloc -> alloc transition in the COW image. |
| | 59 | |
| | 60 | echo "Creating backing file" |
| | 61 | echo |
| | 62 | |
| | 63 | _make_test_img 1G |
| | 64 | io_pattern writev 0 $CLUSTER_SIZE $((2 * CLUSTER_SIZE)) 8 0x11 |
| | 65 | mv "$TEST_IMG" "$TEST_IMG.base_old" |
| | 66 | |
| | 67 | echo "Creating new backing file" |
| | 68 | echo |
| | 69 | |
| | 70 | _make_test_img 1G |
| | 71 | io_pattern writev 0 $((2 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 4 0x22 |
| | 72 | mv "$TEST_IMG" "$TEST_IMG.base_new" |
| | 73 | |
| | 74 | echo "Creating COW image" |
| | 75 | echo |
| | 76 | |
| | 77 | _make_test_img -b "$TEST_IMG.base_old" 1G |
| | 78 | io_pattern writev 0 $((4 * CLUSTER_SIZE)) 0 1 0x33 |
| | 79 | io_pattern writev $((8 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 0 1 0x33 |
| | 80 | |
| | 81 | echo "Read before the rebase to make sure everything is set up correctly" |
| | 82 | echo |
| | 83 | io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 84 | io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 85 | io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 86 | io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 87 | io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 88 | io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 89 | io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 90 | io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 91 | io_pattern readv $((8 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 92 | io_pattern readv $((9 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 93 | io_pattern readv $((10 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 94 | io_pattern readv $((11 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 95 | io_pattern readv $((12 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 96 | io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 97 | io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 98 | io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 99 | |
| | 100 | echo |
| | 101 | echo Rebase and test again |
| | 102 | echo |
| | 103 | $QEMU_IMG rebase -b "$TEST_IMG.base_new" "$TEST_IMG" |
| | 104 | io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 105 | io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 106 | io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 107 | io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 108 | io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 109 | io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 110 | io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 111 | io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 112 | io_pattern readv $((8 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 113 | io_pattern readv $((9 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 114 | io_pattern readv $((10 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 115 | io_pattern readv $((11 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 |
| | 116 | io_pattern readv $((12 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 117 | io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 118 | io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 |
| | 119 | io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 |
| | 120 | |
| | 121 | |
| | 122 | # success, all done |
| | 123 | echo "*** done" |
| | 124 | rm -f $seq.full |
| | 125 | status=0 |
projects / qemu.git / blame_incremental