2 # group: rw backing auto quick
6 # Copyright (C) 2009 Red Hat, Inc.
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.
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.
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/>.
23 owner=kwolf@redhat.com
26 echo "QA output created by $seq"
28 status=1 # failure is the default!
33 _rm_test_img "$TEST_DIR/t.$IMGFMT.base_old"
34 _rm_test_img "$TEST_DIR/t.$IMGFMT.base_new"
36 _rm_test_img "$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
41 trap "_cleanup; exit \$status" 0 1 2 3 15
43 # get standard environment, filters and checks
48 # Currently only qcow2 and qed support rebasing
49 _supported_fmt qcow2 qed
55 # Cluster allocations to be tested:
57 # Backing (old) 11 -- 11 -- 11 -- 11 --
58 # Backing (new) 22 22 -- -- 22 22 -- --
59 # COW image 33 33 33 33 -- -- -- --
61 # The pattern is written twice to have both an alloc -> non-alloc and a
62 # non-alloc -> alloc transition in the COW image.
64 echo "Creating backing file"
67 TEST_IMG_SAVE="$TEST_IMG"
68 TEST_IMG="$TEST_IMG.base_old"
71 io_pattern writev 0 $CLUSTER_SIZE $((2 * CLUSTER_SIZE)) 8 0x11
73 TEST_IMG="$TEST_IMG_SAVE.base_new"
75 echo "Creating new backing file"
79 io_pattern writev 0 $((2 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 4 0x22
82 TEST_IMG="$TEST_IMG_SAVE"
84 echo "Creating COW image"
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
91 echo "Read before the rebase to make sure everything is set up correctly"
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
111 echo Rebase and test again
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)) $CLUSTER_SIZE 0 1 0x00
132 echo "=== Test rebase in a subdirectory of the working directory ==="
135 # Clean up the old images beforehand so they do not interfere with
139 mkdir "$TEST_DIR/subdir"
141 # Relative to the overlay
142 BASE_OLD_OREL="t.$IMGFMT.base_old"
143 BASE_NEW_OREL="t.$IMGFMT.base_new"
145 # Relative to $TEST_DIR (which is going to be our working directory)
146 OVERLAY_WREL="subdir/t.$IMGFMT"
148 BASE_OLD="$TEST_DIR/subdir/$BASE_OLD_OREL"
149 BASE_NEW="$TEST_DIR/subdir/$BASE_NEW_OREL"
150 OVERLAY="$TEST_DIR/$OVERLAY_WREL"
154 # Backing (old): 11 11 -- 11
155 # Backing (new): -- 22 22 11
156 # Overlay: -- -- -- --
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.
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
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))" \
172 $QEMU_IO "$BASE_NEW" \
173 -c "write -P 0x22 $((1 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \
174 -c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \
179 pushd "$TEST_DIR" >/dev/null
180 $QEMU_IMG rebase -f "$IMGFMT" -b "$BASE_NEW_OREL" -F $IMGFMT "$OVERLAY_WREL"
183 # Verify the backing path is correct
184 TEST_IMG=$OVERLAY _img_info | grep '^backing file:'
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" \
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