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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