| #!/usr/bin/env bash |
| # |
| # Test case for qcow2 metadata cache size specification |
| # |
| # Copyright (C) 2014 Red Hat, Inc. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| # |
| |
| # creator |
| owner=mreitz@redhat.com |
| |
| seq=$(basename $0) |
| echo "QA output created by $seq" |
| |
| status=1 # failure is the default! |
| |
| _cleanup() |
| { |
| _cleanup_test_img |
| } |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| # get standard environment, filters and checks |
| . ./common.rc |
| . ./common.filter |
| |
| _supported_fmt qcow2 |
| _supported_proto file nfs |
| _supported_os Linux |
| # Internal snapshots are (currently) impossible with refcount_bits=1 |
| _unsupported_imgopts 'refcount_bits=1[^0-9]' |
| |
| IMG_SIZE=64K |
| |
| _make_test_img $IMG_SIZE |
| $QEMU_IO -c 'write -P 42 0 64k' "$TEST_IMG" | _filter_qemu_io |
| |
| echo |
| echo '=== Testing invalid option combinations ===' |
| echo |
| |
| # all sizes set at the same time |
| $QEMU_IO -c "open -o cache-size=1.25M,l2-cache-size=1M,refcount-cache-size=0.25M $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| # l2-cache-size may not exceed cache-size |
| $QEMU_IO -c "open -o cache-size=1M,l2-cache-size=2M $TEST_IMG" 2>&1 \ |
| | _filter_testdir | _filter_imgfmt |
| # refcount-cache-size may not exceed cache-size |
| $QEMU_IO -c "open -o cache-size=1M,refcount-cache-size=2M $TEST_IMG" 2>&1 \ |
| | _filter_testdir | _filter_imgfmt |
| # 0 should be a valid size (e.g. for enforcing the minimum), so this should not |
| # work |
| $QEMU_IO -c "open -o cache-size=0,l2-cache-size=0,refcount-cache-size=0 $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| |
| # Invalid cache entry sizes |
| $QEMU_IO -c "open -o l2-cache-entry-size=256 $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| $QEMU_IO -c "open -o l2-cache-entry-size=4242 $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| $QEMU_IO -c "open -o l2-cache-entry-size=128k $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| |
| echo |
| echo '=== Testing valid option combinations ===' |
| echo |
| |
| # There should be a reasonable and working minimum |
| $QEMU_IO -c "open -o cache-size=0 $TEST_IMG" -c 'read -P 42 0 64k' \ |
| | _filter_qemu_io |
| $QEMU_IO -c "open -o l2-cache-size=0 $TEST_IMG" -c 'read -P 42 0 64k' \ |
| | _filter_qemu_io |
| $QEMU_IO -c "open -o refcount-cache-size=0 $TEST_IMG" -c 'read -P 42 0 64k' \ |
| | _filter_qemu_io |
| |
| # Derive cache sizes from combined size (with a reasonable ratio, but we cannot |
| # test that) |
| $QEMU_IO -c "open -o cache-size=2M $TEST_IMG" -c 'read -P 42 0 64k' \ |
| | _filter_qemu_io |
| # Fix one cache, derive the other |
| $QEMU_IO -c "open -o cache-size=2M,l2-cache-size=1M $TEST_IMG" \ |
| -c 'read -P 42 0 64k' \ |
| | _filter_qemu_io |
| $QEMU_IO -c "open -o cache-size=2M,refcount-cache-size=1M $TEST_IMG" \ |
| -c 'read -P 42 0 64k' \ |
| | _filter_qemu_io |
| # Directly set both caches |
| $QEMU_IO -c "open -o l2-cache-size=1M,refcount-cache-size=0.25M $TEST_IMG" \ |
| -c 'read -P 42 0 64k' \ |
| | _filter_qemu_io |
| |
| # Valid cache entry sizes |
| $QEMU_IO -c "open -o l2-cache-entry-size=512 $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| $QEMU_IO -c "open -o l2-cache-entry-size=16k $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| $QEMU_IO -c "open -o l2-cache-entry-size=64k $TEST_IMG" \ |
| 2>&1 | _filter_testdir | _filter_imgfmt |
| |
| |
| echo |
| echo '=== Testing minimal L2 cache and COW ===' |
| echo |
| |
| $QEMU_IMG snapshot -c foo "$TEST_IMG" |
| # This requires a COW operation, which accesses two L2 tables simultaneously |
| # (COW source and destination), so there must be enough space in the cache to |
| # place both tables there (and qemu should not crash) |
| $QEMU_IO -c "open -o cache-size=0 $TEST_IMG" -c 'write 0 64k' | _filter_qemu_io |
| |
| # success, all done |
| echo '*** done' |
| rm -f $seq.full |
| status=0 |