| 1 | #!/usr/bin/env bash |
| 2 | # group: rw auto quick |
| 3 | # |
| 4 | # Test case for qcow2 metadata cache size specification |
| 5 | # |
| 6 | # Copyright (C) 2014 Red Hat, Inc. |
| 7 | # |
| 8 | # This program is free software; you can redistribute it and/or modify |
| 9 | # it under the terms of the GNU General Public License as published by |
| 10 | # the Free Software Foundation; either version 2 of the License, or |
| 11 | # (at your option) any later version. |
| 12 | # |
| 13 | # This program is distributed in the hope that it will be useful, |
| 14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | # GNU General Public License for more details. |
| 17 | # |
| 18 | # You should have received a copy of the GNU General Public License |
| 19 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | # |
| 21 | |
| 22 | # creator |
| 23 | owner=hreitz@redhat.com |
| 24 | |
| 25 | seq=$(basename $0) |
| 26 | echo "QA output created by $seq" |
| 27 | |
| 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 qcow2 |
| 41 | _supported_proto file nfs fuse |
| 42 | # Internal snapshots are (currently) impossible with refcount_bits=1, |
| 43 | # and generally impossible with external data files |
| 44 | _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file |
| 45 | |
| 46 | IMG_SIZE=64K |
| 47 | |
| 48 | _make_test_img $IMG_SIZE |
| 49 | $QEMU_IO -c 'write -P 42 0 64k' "$TEST_IMG" | _filter_qemu_io |
| 50 | |
| 51 | echo |
| 52 | echo '=== Testing invalid option combinations ===' |
| 53 | echo |
| 54 | |
| 55 | # all sizes set at the same time |
| 56 | $QEMU_IO -c "open -o cache-size=1.25M,l2-cache-size=1M,refcount-cache-size=0.25M $TEST_IMG" \ |
| 57 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 58 | # l2-cache-size may not exceed cache-size |
| 59 | $QEMU_IO -c "open -o cache-size=1M,l2-cache-size=2M $TEST_IMG" 2>&1 \ |
| 60 | | _filter_testdir | _filter_imgfmt |
| 61 | # refcount-cache-size may not exceed cache-size |
| 62 | $QEMU_IO -c "open -o cache-size=1M,refcount-cache-size=2M $TEST_IMG" 2>&1 \ |
| 63 | | _filter_testdir | _filter_imgfmt |
| 64 | # 0 should be a valid size (e.g. for enforcing the minimum), so this should not |
| 65 | # work |
| 66 | $QEMU_IO -c "open -o cache-size=0,l2-cache-size=0,refcount-cache-size=0 $TEST_IMG" \ |
| 67 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 68 | |
| 69 | # Invalid cache entry sizes |
| 70 | $QEMU_IO -c "open -o l2-cache-entry-size=256 $TEST_IMG" \ |
| 71 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 72 | $QEMU_IO -c "open -o l2-cache-entry-size=4242 $TEST_IMG" \ |
| 73 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 74 | $QEMU_IO -c "open -o l2-cache-entry-size=128k $TEST_IMG" \ |
| 75 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 76 | |
| 77 | echo |
| 78 | echo '=== Testing valid option combinations ===' |
| 79 | echo |
| 80 | |
| 81 | # There should be a reasonable and working minimum |
| 82 | $QEMU_IO -c "open -o cache-size=0 $TEST_IMG" -c 'read -P 42 0 64k' \ |
| 83 | | _filter_qemu_io |
| 84 | $QEMU_IO -c "open -o l2-cache-size=0 $TEST_IMG" -c 'read -P 42 0 64k' \ |
| 85 | | _filter_qemu_io |
| 86 | $QEMU_IO -c "open -o refcount-cache-size=0 $TEST_IMG" -c 'read -P 42 0 64k' \ |
| 87 | | _filter_qemu_io |
| 88 | |
| 89 | # Derive cache sizes from combined size (with a reasonable ratio, but we cannot |
| 90 | # test that) |
| 91 | $QEMU_IO -c "open -o cache-size=2M $TEST_IMG" -c 'read -P 42 0 64k' \ |
| 92 | | _filter_qemu_io |
| 93 | # Fix one cache, derive the other |
| 94 | $QEMU_IO -c "open -o cache-size=2M,l2-cache-size=1M $TEST_IMG" \ |
| 95 | -c 'read -P 42 0 64k' \ |
| 96 | | _filter_qemu_io |
| 97 | $QEMU_IO -c "open -o cache-size=2M,refcount-cache-size=1M $TEST_IMG" \ |
| 98 | -c 'read -P 42 0 64k' \ |
| 99 | | _filter_qemu_io |
| 100 | # Directly set both caches |
| 101 | $QEMU_IO -c "open -o l2-cache-size=1M,refcount-cache-size=0.25M $TEST_IMG" \ |
| 102 | -c 'read -P 42 0 64k' \ |
| 103 | | _filter_qemu_io |
| 104 | |
| 105 | # Valid cache entry sizes |
| 106 | $QEMU_IO -c "open -o l2-cache-entry-size=512 $TEST_IMG" \ |
| 107 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 108 | $QEMU_IO -c "open -o l2-cache-entry-size=16k $TEST_IMG" \ |
| 109 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 110 | $QEMU_IO -c "open -o l2-cache-entry-size=64k $TEST_IMG" \ |
| 111 | 2>&1 | _filter_testdir | _filter_imgfmt |
| 112 | |
| 113 | |
| 114 | echo |
| 115 | echo '=== Testing minimal L2 cache and COW ===' |
| 116 | echo |
| 117 | |
| 118 | $QEMU_IMG snapshot -c foo "$TEST_IMG" |
| 119 | # This requires a COW operation, which accesses two L2 tables simultaneously |
| 120 | # (COW source and destination), so there must be enough space in the cache to |
| 121 | # place both tables there (and qemu should not crash) |
| 122 | $QEMU_IO -c "open -o cache-size=0 $TEST_IMG" -c 'write 0 64k' | _filter_qemu_io |
| 123 | |
| 124 | # success, all done |
| 125 | echo '*** done' |
| 126 | rm -f $seq.full |
| 127 | status=0 |