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Diffstat (limited to 'qemu/tests/qemu-iotests/046')
| -rwxr-xr-x | qemu/tests/qemu-iotests/046 | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/qemu/tests/qemu-iotests/046 b/qemu/tests/qemu-iotests/046 new file mode 100755 index 000000000..e0be46cf2 --- /dev/null +++ b/qemu/tests/qemu-iotests/046 @@ -0,0 +1,272 @@ +#!/bin/bash +# +# Test concurrent cluster allocations +# +# Copyright (C) 2012 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=kwolf@redhat.com + +seq=`basename $0` +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +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 +_supported_os Linux + +CLUSTER_SIZE=64k +size=128M + +echo +echo "== creating backing file for COW tests ==" + +_make_test_img $size + +function backing_io() +{ + local offset=$1 + local sectors=$2 + local op=$3 + local pattern=0 + local cur_sec=0 + + for i in $(seq 0 $((sectors - 1))); do + cur_sec=$((offset / 65536 + i)) + pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 )) + + echo "$op -P $pattern $((cur_sec * 64))k 64k" + done +} + +backing_io 0 32 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io + +mv "$TEST_IMG" "$TEST_IMG.base" + +_make_test_img -b "$TEST_IMG.base" 6G + +echo +echo "== Some concurrent requests touching the same cluster ==" + +function overlay_io() +{ +# Allocate middle of cluster 1, then write to somewhere before and after it +cat <<EOF +break write_aio A +aio_write -P 10 0x18000 0x2000 +wait_break A + +aio_write -P 11 0x12000 0x2000 +aio_write -P 12 0x1c000 0x2000 + +resume A +aio_flush +EOF + +# Sequential write case: Alloc middle of cluster 2, then write overlapping +# to next cluster +cat <<EOF +break write_aio A +aio_write -P 20 0x28000 0x2000 +wait_break A +aio_write -P 21 0x2a000 0x10000 +resume A +aio_flush +EOF + +# The same with a gap between both requests +cat <<EOF +break write_aio A +aio_write -P 40 0x48000 0x2000 +wait_break A +aio_write -P 41 0x4c000 0x10000 +resume A +aio_flush +EOF + +# Sequential write, but the next cluster is already allocated +cat <<EOF +write -P 70 0x76000 0x8000 +aio_flush +break write_aio A +aio_write -P 60 0x66000 0x2000 +wait_break A +aio_write -P 61 0x6a000 0xe000 +resume A +aio_flush +EOF + +# Sequential write, but the next cluster is already allocated +# and phyiscally in the right position +cat <<EOF +write -P 89 0x80000 0x1000 +write -P 90 0x96000 0x8000 +aio_flush +discard 0x80000 0x10000 +aio_flush +break write_aio A +aio_write -P 80 0x86000 0x2000 +wait_break A +aio_write -P 81 0x8a000 0xe000 +resume A +aio_flush +EOF + +# Sequential write, and the next cluster is compressed +cat <<EOF +write -P 109 0xa0000 0x1000 +write -c -P 110 0xb0000 0x10000 +aio_flush +discard 0xa0000 0x10000 +aio_flush +break write_aio A +aio_write -P 100 0xa6000 0x2000 +wait_break A +aio_write -P 101 0xaa000 0xe000 +resume A +aio_flush +EOF + +# Reverse sequential write +cat <<EOF +break write_aio A +aio_write -P 121 0xdc000 0x2000 +wait_break A +aio_write -P 120 0xc4000 0x18000 +resume A +aio_flush +EOF + +# Reverse sequential write with a gap +cat <<EOF +break write_aio A +aio_write -P 141 0xfc000 0x2000 +wait_break A +aio_write -P 140 0xe4000 0x14000 +resume A +aio_flush +EOF + +# Allocate an area in the middle and then overwrite with a larger request +cat <<EOF +break write_aio A +aio_write -P 161 0x10c000 0x8000 +wait_break A +aio_write -P 160 0x104000 0x18000 +resume A +aio_flush +EOF +} + +overlay_io | $QEMU_IO blkdebug::"$TEST_IMG" | _filter_qemu_io |\ + sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' + +echo +echo "== Verify image content ==" + +function verify_io() +{ + if ($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep "compat: 0.10" > /dev/null); then + # For v2 images, discarded clusters are read from the backing file + # Keep the variable empty so that the backing file value can be used as + # the default below + discarded= + else + # Discarded clusters are zeroed for v3 or later + discarded=0 + fi + + echo read -P 0 0 0x10000 + + echo read -P 1 0x10000 0x2000 + echo read -P 11 0x12000 0x2000 + echo read -P 1 0x14000 0x4000 + echo read -P 10 0x18000 0x2000 + echo read -P 1 0x1a000 0x2000 + echo read -P 12 0x1c000 0x2000 + echo read -P 1 0x1e000 0x2000 + + echo read -P 2 0x20000 0x8000 + echo read -P 20 0x28000 0x2000 + echo read -P 21 0x2a000 0x10000 + echo read -P 3 0x3a000 0x6000 + + echo read -P 4 0x40000 0x8000 + echo read -P 40 0x48000 0x2000 + echo read -P 4 0x4a000 0x2000 + echo read -P 41 0x4c000 0x10000 + echo read -P 5 0x5c000 0x4000 + + echo read -P 6 0x60000 0x6000 + echo read -P 60 0x66000 0x2000 + echo read -P 6 0x68000 0x2000 + echo read -P 61 0x6a000 0xe000 + echo read -P 70 0x78000 0x6000 + echo read -P 7 0x7e000 0x2000 + + echo read -P ${discarded:-8} 0x80000 0x6000 + echo read -P 80 0x86000 0x2000 + echo read -P ${discarded:-8} 0x88000 0x2000 + echo read -P 81 0x8a000 0xe000 + echo read -P 90 0x98000 0x6000 + echo read -P 9 0x9e000 0x2000 + + echo read -P ${discarded:-10} 0xa0000 0x6000 + echo read -P 100 0xa6000 0x2000 + echo read -P ${discarded:-10} 0xa8000 0x2000 + echo read -P 101 0xaa000 0xe000 + echo read -P 110 0xb8000 0x8000 + + echo read -P 12 0xc0000 0x4000 + echo read -P 120 0xc4000 0x18000 + echo read -P 121 0xdc000 0x2000 + echo read -P 13 0xde000 0x2000 + + echo read -P 14 0xe0000 0x4000 + echo read -P 140 0xe4000 0x14000 + echo read -P 15 0xf8000 0x4000 + echo read -P 141 0xfc000 0x2000 + echo read -P 15 0xfe000 0x2000 + + echo read -P 16 0x100000 0x4000 + echo read -P 160 0x104000 0x8000 + # Undefined content for 0x10c000 0x8000 + echo read -P 160 0x114000 0x8000 + echo read -P 17 0x11c000 0x4000 +} + +verify_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io + +_check_test_img + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 |