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Up to [Qemu by Fabrice Bellard] / qemu / tests / qemu-iotests|
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1.1 root 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
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