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iotests: Add poke_file_[bl]e functions
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1 #!/usr/bin/env bash
2 #
3 # Test export internal snapshot by qemu-nbd, convert it by qemu-img.
4 #
5 # Copyright (C) 2013 IBM, Inc.
6 #
7 # Based on 029.
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 [email protected]
25
26 seq=`basename $0`
27 echo "QA output created by $seq"
28
29 status=1        # failure is the default!
30
31 _export_nbd_snapshot()
32 {
33     nbd_server_start_unix_socket "$TEST_IMG" -l $1
34 }
35
36 _export_nbd_snapshot1()
37 {
38     nbd_server_start_unix_socket "$TEST_IMG" -l snapshot.name=$1
39 }
40
41 _cleanup()
42 {
43     nbd_server_stop
44     _cleanup_test_img
45     _rm_test_img "$converted_image"
46 }
47 trap "_cleanup; exit \$status" 0 1 2 3 15
48
49 # get standard environment, filters and checks
50 . ./common.rc
51 . ./common.filter
52 . ./common.pattern
53 . ./common.nbd
54
55 _supported_fmt qcow2
56 _supported_proto file
57 _supported_os Linux
58 _require_command QEMU_NBD
59 # Internal snapshots are (currently) impossible with refcount_bits=1,
60 # and generally impossible with external data files
61 _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file
62
63 nbd_snapshot_img="nbd:unix:$nbd_unix_socket"
64
65 converted_image=$TEST_IMG.converted
66
67 # Use -f raw instead of -f $IMGFMT for the NBD connection
68 QEMU_IO_NBD="$QEMU_IO -f raw --cache=$CACHEMODE --aio=$AIOMODE"
69
70 echo
71 echo "== preparing image =="
72 _make_test_img 64M
73 $QEMU_IO -c 'write -P 0xa 0x1000 0x1000' "$TEST_IMG" | _filter_qemu_io
74 $QEMU_IO -c 'write -P 0xb 0x2000 0x1000' "$TEST_IMG" | _filter_qemu_io
75 $QEMU_IMG snapshot -c sn1 "$TEST_IMG"
76 $QEMU_IO -c 'write -P 0xc 0x1000 0x1000' "$TEST_IMG" | _filter_qemu_io
77 $QEMU_IO -c 'write -P 0xd 0x2000 0x1000' "$TEST_IMG" | _filter_qemu_io
78 _check_test_img
79
80 echo
81 echo "== verifying the image file with patterns =="
82 $QEMU_IO -c 'read -P 0xc 0x1000 0x1000' "$TEST_IMG" | _filter_qemu_io
83 $QEMU_IO -c 'read -P 0xd 0x2000 0x1000' "$TEST_IMG" | _filter_qemu_io
84
85 _export_nbd_snapshot sn1
86
87 echo
88 echo "== verifying the exported snapshot with patterns, method 1 =="
89 $QEMU_IO_NBD -r -c 'read -P 0xa 0x1000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
90 $QEMU_IO_NBD -r -c 'read -P 0xb 0x2000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
91
92 _export_nbd_snapshot1 sn1
93
94 echo
95 echo "== verifying the exported snapshot with patterns, method 2 =="
96 $QEMU_IO_NBD -r -c 'read -P 0xa 0x1000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
97 $QEMU_IO_NBD -r -c 'read -P 0xb 0x2000 0x1000' "$nbd_snapshot_img" | _filter_qemu_io
98
99 $QEMU_IMG convert "$TEST_IMG" -l sn1 -O qcow2 "$converted_image"
100
101 echo
102 echo "== verifying the converted snapshot with patterns, method 1 =="
103 $QEMU_IO -c 'read -P 0xa 0x1000 0x1000' "$converted_image" | _filter_qemu_io
104 $QEMU_IO -c 'read -P 0xb 0x2000 0x1000' "$converted_image" | _filter_qemu_io
105
106 $QEMU_IMG convert "$TEST_IMG" -l snapshot.name=sn1 -O qcow2 "$converted_image"
107
108 echo
109 echo "== verifying the converted snapshot with patterns, method 2 =="
110 $QEMU_IO -c 'read -P 0xa 0x1000 0x1000' "$converted_image" | _filter_qemu_io
111 $QEMU_IO -c 'read -P 0xb 0x2000 0x1000' "$converted_image" | _filter_qemu_io
112
113 # success, all done
114 echo "*** done"
115 rm -f $seq.full
116 status=0
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