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1 #!/bin/bash
2 #
3 # Test aligned and misaligned write zeroes operations.
4 #
5 # Copyright (C) 2012 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 status=1        # failure is the default!
29
30 _cleanup()
31 {
32         _cleanup_test_img
33 }
34 trap "_cleanup; exit \$status" 0 1 2 3 15
35
36 # get standard environment, filters and checks
37 . ./common.rc
38 . ./common.filter
39
40 _supported_fmt generic
41 _supported_proto generic
42 _supported_os Linux
43
44
45 size=128M
46 _make_test_img $size
47
48 do_test()
49 {
50         local align=$1
51         local iocmd=$2
52         local img=$3
53         if [ "$IMGOPTSSYNTAX" = "true" ]
54         then
55             IO_OPEN_ARG="$img"
56             IO_EXTRA_ARGS="--image-opts"
57         else
58             IO_OPEN_ARG="-o driver=$IMGFMT,file.align=$align blkdebug::$img"
59             IO_EXTRA_ARGS=""
60         fi
61         {
62                 echo "open $IO_OPEN_ARG"
63                 echo $iocmd
64         } | $QEMU_IO $IO_EXTRA_ARGS
65 }
66
67 for write_zero_cmd in "write -z" "aio_write -z"; do
68 for align in 512 4k; do
69         echo
70         echo "== preparing image =="
71         do_test $align "write -P 0xa 0x200 0x400" "$TEST_IMG" | _filter_qemu_io
72         do_test $align "write -P 0xa 0x20000 0x600" "$TEST_IMG" | _filter_qemu_io
73         do_test $align "$write_zero_cmd 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
74
75         echo
76         echo "== verifying patterns (1) =="
77         do_test $align "read -P 0xa 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
78         do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
79         do_test $align "read -P 0xa 0x20400 0x200" "$TEST_IMG" | _filter_qemu_io
80
81         echo
82         echo "== rewriting zeroes =="
83         do_test $align "write -P 0xb 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
84         do_test $align "$write_zero_cmd 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
85
86         echo
87         echo "== verifying patterns (2) =="
88         do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
89
90         echo
91         echo "== rewriting unaligned zeroes =="
92         do_test $align "write -P 0xb 0x0 0x1000" "$TEST_IMG" | _filter_qemu_io
93         do_test $align "$write_zero_cmd 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
94
95         echo
96         echo "== verifying patterns (3) =="
97         do_test $align "read -P 0xb 0x0 0x200" "$TEST_IMG" | _filter_qemu_io
98         do_test $align "read -P 0x0 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
99         do_test $align "read -P 0xb 0x400 0xc00" "$TEST_IMG" | _filter_qemu_io
100
101         echo
102 done
103 done
104
105 # success, all done
106 echo "*** done"
107 rm -f $seq.full
108 status=0
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