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
() {
25 for i
in `seq 1 $count`; do
26 echo alloc $
(( start
+ (i
- 1) * 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
- 1) * 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
69 local num_medium
=$
((num_large
* num_large
))
70 local num_small
=$
((4 * num_medium
))
72 local half_cluster
=$
((cluster_size
/ 2))
73 local quarter_cluster
=$
((cluster_size
/ 4))
74 local l2_size
=$
((cluster_size
* cluster_size
/ 8))
77 io
"$op" $offset $cluster_size $cluster_size $num_small
78 offset
=$
((offset
+ num_small
* $cluster_size))
80 # From somewhere in the middle to the end of a cluster
81 io
"$op" $
((offset
+ $half_cluster)) $half_cluster $cluster_size $num_small
82 offset
=$
((offset
+ num_small
* $cluster_size))
84 # From the start to somewhere in the middle of a cluster
85 io
"$op" $offset $half_cluster $cluster_size $num_small
86 offset
=$
((offset
+ num_small
* $cluster_size))
88 # Completely misaligned (and small)
89 io
"$op" $
((offset
+ $quarter_cluster)) $half_cluster $cluster_size $num_small
90 offset
=$
((offset
+ num_small
* $cluster_size))
92 # Spanning multiple clusters
93 io
"$op" $
((offset
+ $half_cluster)) $
((cluster_size
* 2)) $
((cluster_size
* 3)) $num_medium
94 offset
=$
((offset
+ num_medium
* 3 * $cluster_size))
96 # Spanning multiple L2 tables
97 # L2 table size: 512 clusters of 4k = 2M
98 offset
=$
(( ((offset
+ l2_size
- 1) & ~
(l2_size
- 1)) - (3 * half_cluster
) ))
99 io
"$op" $offset $
((6 * half_cluster
)) $
(( l2_size
+ half_cluster
)) $num_large
100 offset
=$
((offset
+ num_large
* ( l2_size
+ half_cluster
)))
103 function io_test2
() {
105 local cluster_size
=$2
108 # Pattern (repeat after 9 clusters):
109 # used - used - free - used - compressed - compressed -
110 # free - free - compressed
112 # Write the clusters to be compressed
113 echo === Clusters to be compressed
[1]
114 io_pattern writev $
((offset
+ 4 * $cluster_size)) $cluster_size $
((9 * $cluster_size)) $num 165
115 echo === Clusters to be compressed
[2]
116 io_pattern writev $
((offset
+ 5 * $cluster_size)) $cluster_size $
((9 * $cluster_size)) $num 165
117 echo === Clusters to be compressed
[3]
118 io_pattern writev $
((offset
+ 8 * $cluster_size)) $cluster_size $
((9 * $cluster_size)) $num 165
120 mv "$TEST_IMG" "$TEST_IMG.orig"
121 $QEMU_IMG convert
-f $IMGFMT -O $IMGFMT -c "$TEST_IMG.orig" "$TEST_IMG"
123 # Write the used clusters
124 echo === Used clusters
[1]
125 io_pattern writev $
((offset
+ 0 * $cluster_size)) $cluster_size $
((9 * $cluster_size)) $num 165
126 echo === Used clusters
[2]
127 io_pattern writev $
((offset
+ 1 * $cluster_size)) $cluster_size $
((9 * $cluster_size)) $num 165
128 echo === Used clusters
[3]
129 io_pattern writev $
((offset
+ 3 * $cluster_size)) $cluster_size $
((9 * $cluster_size)) $num 165
132 echo === Read used
/compressed clusters
133 io_pattern readv $
((offset
+ 0 * $cluster_size)) $
((2 * $cluster_size)) $
((9 * $cluster_size)) $num 165
134 io_pattern readv $
((offset
+ 3 * $cluster_size)) $
((3 * $cluster_size)) $
((9 * $cluster_size)) $num 165
135 io_pattern readv $
((offset
+ 8 * $cluster_size)) $
((1 * $cluster_size)) $
((9 * $cluster_size)) $num 165
138 io_zero readv $
((offset
+ 2 * $cluster_size)) $
((1 * $cluster_size)) $
((9 * $cluster_size)) $num
139 io_zero readv $
((offset
+ 6 * $cluster_size)) $
((2 * $cluster_size)) $
((9 * $cluster_size)) $num