3 # Copyright (C) 2009 Red Hat, Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 function do_is_allocated
() {
21 local size
=$
(( $2 / 512))
25 for i
in `seq 1 $count`; do
26 echo alloc $
(( start
+ i
* step
)) $size
30 function is_allocated
() {
31 do_is_allocated
"$@" |
$QEMU_IO $TEST_IMG | _filter_qemu_io
42 echo === IO
: pattern
$pattern >&2
43 for i
in `seq 1 $count`; do
44 echo $op -P $pattern $
(( start
+ i
* step
)) $size
48 function io_pattern
() {
49 do_io
"$@" |
$QEMU_IO $TEST_IMG | _filter_qemu_io
54 local pattern
=$
(( (start
>> 9) % 256 ))
56 do_io
"$@" $pattern |
$QEMU_IO $TEST_IMG | _filter_qemu_io
60 do_io
"$@" 0 |
$QEMU_IO $TEST_IMG | _filter_qemu_io
67 # Complete clusters (size = 4k)
68 io
"$op" $offset 4096 4096 256
69 offset
=$
((offset
+ 256 * 4096))
71 # From somewhere in the middle to the end of a cluster
72 io
"$op" $
((offset
+ 2048)) 2048 4096 256
73 offset
=$
((offset
+ 256 * 4096))
75 # From the start to somewhere in the middle of a cluster
76 io
"$op" $offset 2048 4096 256
77 offset
=$
((offset
+ 256 * 4096))
79 # Completely misaligned (and small)
80 io
"$op" $
((offset
+ 1024)) 2048 4096 256
81 offset
=$
((offset
+ 256 * 4096))
83 # Spanning multiple clusters
84 io
"$op" $
((offset
+ 2048)) 8192 12288 64
85 offset
=$
((offset
+ 64 * 12288))
87 # Spanning multiple L2 tables
88 # L2 table size: 512 clusters of 4k = 2M
89 io
"$op" $
((offset
+ 2048)) 4194304 4999680 8
90 offset
=$
((offset
+ 8 * 4999680))
100 # Pattern (repeat after 9 clusters):
101 # used - used - free - used - compressed - compressed - free - free - compressed
103 # Write the clusters to be compressed
104 echo === Clusters to be compressed
[1]
105 io_pattern writev $
((offset
+ 4 * 4096)) 4096 $
((9 * 4096)) 256 165
106 echo === Clusters to be compressed
[2]
107 io_pattern writev $
((offset
+ 5 * 4096)) 4096 $
((9 * 4096)) 256 165
108 echo === Clusters to be compressed
[3]
109 io_pattern writev $
((offset
+ 8 * 4096)) 4096 $
((9 * 4096)) 256 165
111 mv $TEST_IMG $TEST_IMG.orig
112 $QEMU_IMG convert
-f $IMGFMT -O $IMGFMT -c $TEST_IMG.orig
$TEST_IMG
114 # Write the used clusters
115 echo === Used clusters
[1]
116 io_pattern writev $
((offset
+ 0 * 4096)) 4096 $
((9 * 4096)) 256 165
117 echo === Used clusters
[2]
118 io_pattern writev $
((offset
+ 1 * 4096)) 4096 $
((9 * 4096)) 256 165
119 echo === Used clusters
[3]
120 io_pattern writev $
((offset
+ 3 * 4096)) 4096 $
((9 * 4096)) 256 165
123 echo === Read used
/compressed clusters
124 io_pattern readv $
((offset
+ 0 * 4096)) $
((2 * 4096)) $
((9 * 4096)) 256 165
125 io_pattern readv $
((offset
+ 3 * 4096)) $
((3 * 4096)) $
((9 * 4096)) 256 165
126 io_pattern readv $
((offset
+ 8 * 4096)) $
((1 * 4096)) $
((9 * 4096)) 256 165
129 io_zero readv $
((offset
+ 2 * 4096)) $
((1 * 4096)) $
((9 * 4096)) 256
130 io_zero readv $
((offset
+ 6 * 4096)) $
((2 * 4096)) $
((9 * 4096)) 256