3 # Copyright (C) 2019 Red Hat Inc.
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions are
9 # * Redistributions of source code must retain the above copyright
10 # notice, this list of conditions and the following disclaimer.
12 # * Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
16 # * Neither the name of Red Hat nor the names of its contributors may be
17 # used to endorse or promote products derived from this software without
18 # specific prior written permission.
20 # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
23 # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
24 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
27 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
28 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 requires
grep --version
38 requires qemu-img
--version
39 requires qemu-io
--version
42 sockurl
="nbd+unix:///?socket=$sock"
43 pidfile
="test-cacheextents.pid"
44 accessfile
="test-cacheextents-access.log"
45 accessfile_full
="$PWD/test-cacheextents-access.log"
46 files
="$pidfile $sock"
47 rm -f $files $accessfile
48 cleanup_fn
rm -f $files
50 # Intentionally using EOF rather than 'EOF' so that we can pass in the
55 --filter=cacheextents \
57 echo "Call: \$@" >>$accessfile_full
59 block_size=\$((1024*1024))
61 thread_model) echo parallel ;;
62 get_size) echo \$size ;;
65 echo "extents request: \$@" >>$accessfile_full
66 offset=\$((\$4 / \$block_size))
67 count=\$((\$3 / \$block_size))
68 length=\$((\$offset + \$count))
69 for i in \$(seq \$offset \$length); do
70 echo \${i}M \$block_size \$((i%4)) >>$accessfile_full
71 echo \${i}M \$block_size \$((i%4))
74 pread) dd if=/dev/zero count=\$3 iflag=count_bytes ;;
76 pwrite) dd of=/dev/null ;;
90 qemu-io
-f raw
"$@" "$sockurl"
91 test "$(grep -c "^extents request
: " $accessfile)" -eq "$num_accesses"
97 # First one causes caching, the rest should be returned from cache.
98 test_me
1 -c 'map' -c 'map' -c 'map'
99 # First one is still cached from last time, discard should kill the cache, then
100 # one request should go through.
101 test_me
1 -c 'map' -c 'discard 0 1' -c 'map'
102 # Same as above, only this time the cache is killed before all the operations as
103 # well. This is used from now on to clear the cache as it seems nicer and
104 # faster than running new nbdkit for each test.
105 test_me
2 -c 'discard 0 1' -c 'map' -c 'discard 0 1' -c 'map'
106 # Write should kill the cache as well.
107 test_me
2 -c 'discard 0 1' -c 'map' -c 'write 0 1' -c 'map'
108 # Alloc should use cached data from map
109 test_me
1 -c 'discard 0 1' -c 'map' -c 'alloc 0'
110 # Read should not kill the cache
111 test_me
1 -c 'discard 0 1' -c 'map' -c 'read 0 1' -c 'map' -c 'alloc 0'