024 (6569B)
1 #!/usr/bin/env bash 2 # group: rw backing auto quick 3 # 4 # Rebasing COW images 5 # 6 # Copyright (C) 2009 Red Hat, Inc. 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=kwolf@redhat.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_DIR/t.$IMGFMT.base_old" 34 _rm_test_img "$TEST_DIR/t.$IMGFMT.base_new" 35 36 _rm_test_img "$TEST_DIR/subdir/t.$IMGFMT" 37 _rm_test_img "$TEST_DIR/subdir/t.$IMGFMT.base_old" 38 _rm_test_img "$TEST_DIR/subdir/t.$IMGFMT.base_new" 39 rmdir "$TEST_DIR/subdir" 2> /dev/null 40 } 41 trap "_cleanup; exit \$status" 0 1 2 3 15 42 43 # get standard environment, filters and checks 44 . ./common.rc 45 . ./common.filter 46 . ./common.pattern 47 48 # Currently only qcow2 and qed support rebasing 49 _supported_fmt qcow2 qed 50 _supported_proto file 51 _supported_os Linux 52 53 CLUSTER_SIZE=65536 54 55 # Cluster allocations to be tested: 56 # 57 # Backing (old) 11 -- 11 -- 11 -- 11 -- 58 # Backing (new) 22 22 -- -- 22 22 -- -- 59 # COW image 33 33 33 33 -- -- -- -- 60 # 61 # The pattern is written twice to have both an alloc -> non-alloc and a 62 # non-alloc -> alloc transition in the COW image. 63 64 echo "Creating backing file" 65 echo 66 67 TEST_IMG_SAVE="$TEST_IMG" 68 TEST_IMG="$TEST_IMG.base_old" 69 70 _make_test_img 1G 71 io_pattern writev 0 $CLUSTER_SIZE $((2 * CLUSTER_SIZE)) 8 0x11 72 73 TEST_IMG="$TEST_IMG_SAVE.base_new" 74 75 echo "Creating new backing file" 76 echo 77 78 _make_test_img 1G 79 io_pattern writev 0 $((2 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 4 0x22 80 81 82 TEST_IMG="$TEST_IMG_SAVE" 83 84 echo "Creating COW image" 85 echo 86 87 _make_test_img -b "$TEST_IMG.base_old" -F $IMGFMT 1G 88 io_pattern writev 0 $((4 * CLUSTER_SIZE)) 0 1 0x33 89 io_pattern writev $((8 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 0 1 0x33 90 91 echo "Read before the rebase to make sure everything is set up correctly" 92 echo 93 io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 94 io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 95 io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 96 io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 97 io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 98 io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 99 io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 100 io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 101 io_pattern readv $((8 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 102 io_pattern readv $((9 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 103 io_pattern readv $((10 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 104 io_pattern readv $((11 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 105 io_pattern readv $((12 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 106 io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 107 io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 108 io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 109 110 echo 111 echo Rebase and test again 112 echo 113 $QEMU_IMG rebase -b "$TEST_IMG.base_new" -F $IMGFMT "$TEST_IMG" 114 io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 115 io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 116 io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 117 io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 118 io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 119 io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 120 io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 121 io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 122 io_pattern readv $((8 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 123 io_pattern readv $((9 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 124 io_pattern readv $((10 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 125 io_pattern readv $((11 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 126 io_pattern readv $((12 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 127 io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 128 io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 129 io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 130 131 echo 132 echo "=== Test rebase in a subdirectory of the working directory ===" 133 echo 134 135 # Clean up the old images beforehand so they do not interfere with 136 # this test 137 _cleanup 138 139 mkdir "$TEST_DIR/subdir" 140 141 # Relative to the overlay 142 BASE_OLD_OREL="t.$IMGFMT.base_old" 143 BASE_NEW_OREL="t.$IMGFMT.base_new" 144 145 # Relative to $TEST_DIR (which is going to be our working directory) 146 OVERLAY_WREL="subdir/t.$IMGFMT" 147 148 BASE_OLD="$TEST_DIR/subdir/$BASE_OLD_OREL" 149 BASE_NEW="$TEST_DIR/subdir/$BASE_NEW_OREL" 150 OVERLAY="$TEST_DIR/$OVERLAY_WREL" 151 152 # Test done here: 153 # 154 # Backing (old): 11 11 -- 11 155 # Backing (new): -- 22 22 11 156 # Overlay: -- -- -- -- 157 # 158 # Rebasing works, we have verified that above. Here, we just want to 159 # see that rebasing is done for the correct target backing file. 160 161 TEST_IMG=$BASE_OLD _make_test_img 1M 162 TEST_IMG=$BASE_NEW _make_test_img 1M 163 TEST_IMG=$OVERLAY _make_test_img -b "$BASE_OLD_OREL" -F $IMGFMT 1M 164 165 echo 166 167 $QEMU_IO "$BASE_OLD" \ 168 -c "write -P 0x11 $((0 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \ 169 -c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \ 170 | _filter_qemu_io 171 172 $QEMU_IO "$BASE_NEW" \ 173 -c "write -P 0x22 $((1 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \ 174 -c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \ 175 | _filter_qemu_io 176 177 echo 178 179 pushd "$TEST_DIR" >/dev/null 180 $QEMU_IMG rebase -f "$IMGFMT" -b "$BASE_NEW_OREL" -F $IMGFMT "$OVERLAY_WREL" 181 popd >/dev/null 182 183 # Verify the backing path is correct 184 TEST_IMG=$OVERLAY _img_info | grep '^backing file:' 185 186 echo 187 188 # Verify the data is correct 189 $QEMU_IO "$OVERLAY" \ 190 -c "read -P 0x11 $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ 191 -c "read -P 0x11 $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ 192 -c "read -P 0x00 $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ 193 -c "read -P 0x11 $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE" \ 194 | _filter_qemu_io 195 196 echo 197 198 # Verify that cluster #3 is not allocated (because it is the same in 199 # $BASE_OLD and $BASE_NEW) 200 $QEMU_IMG map "$OVERLAY" | _filter_qemu_img_map 201 202 203 # success, all done 204 echo "*** done" 205 rm -f $seq.full 206 status=0