diff options
Diffstat (limited to 'tests/qemu-iotests/037')
| -rwxr-xr-x | tests/qemu-iotests/037 | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/tests/qemu-iotests/037 b/tests/qemu-iotests/037 new file mode 100755 index 0000000000..c11460b92f --- /dev/null +++ b/tests/qemu-iotests/037 @@ -0,0 +1,119 @@ +#!/bin/bash +# +# Test COW from backing files +# +# 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 qcow qcow2 vmdk qed +_supported_proto generic +_supported_os Linux + +CLUSTER_SIZE=4k +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 / 512 + i)) + pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 )) + + echo "$op -P $pattern $((cur_sec * 512)) 512" + done +} + +backing_io 0 256 write | $QEMU_IO $TEST_IMG | _filter_qemu_io + +mv $TEST_IMG $TEST_IMG.base + +_make_test_img -b $TEST_IMG.base 6G + +echo +echo "== COW in a single cluster ==" +$QEMU_IO -c "write -P 0x77 0 2k" $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "write -P 0x88 6k 2k" $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "write -P 0x99 9k 2k" $TEST_IMG | _filter_qemu_io + +$QEMU_IO -c "read -P 0x77 0 2k" $TEST_IMG | _filter_qemu_io +backing_io $((2 * 1024)) 8 read | $QEMU_IO $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "read -P 0x88 6k 2k" $TEST_IMG | _filter_qemu_io +backing_io $((8 * 1024)) 2 read | $QEMU_IO $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "read -P 0x99 9k 2k" $TEST_IMG | _filter_qemu_io +backing_io $((11 * 1024)) 2 read | $QEMU_IO $TEST_IMG | _filter_qemu_io + +echo +echo "== COW in two-cluster allocations ==" +$QEMU_IO -c "write -P 0x77 16k 6k" $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "write -P 0x88 26k 6k" $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "write -P 0x99 33k 5k" $TEST_IMG | _filter_qemu_io + +$QEMU_IO -c "read -P 0x77 16k 6k" $TEST_IMG | _filter_qemu_io +backing_io $((22 * 1024)) 8 read | $QEMU_IO $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "read -P 0x88 26k 6k" $TEST_IMG | _filter_qemu_io +backing_io $((32 * 1024)) 2 read | $QEMU_IO $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "read -P 0x99 33k 5k" $TEST_IMG | _filter_qemu_io +backing_io $((38 * 1024)) 4 read | $QEMU_IO $TEST_IMG | _filter_qemu_io + +echo +echo "== COW in multi-cluster allocations ==" +$QEMU_IO -c "write -P 0x77 48k 15k" $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "write -P 0x88 66k 14k" $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "write -P 0x99 83k 15k" $TEST_IMG | _filter_qemu_io + +$QEMU_IO -c "read -P 0x77 48k 15k" $TEST_IMG | _filter_qemu_io +backing_io $((63 * 1024)) 6 read | $QEMU_IO $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "read -P 0x88 66k 14k" $TEST_IMG | _filter_qemu_io +backing_io $((80 * 1024)) 6 read | $QEMU_IO $TEST_IMG | _filter_qemu_io +$QEMU_IO -c "read -P 0x99 83k 15k" $TEST_IMG | _filter_qemu_io +backing_io $((98 * 1024)) 4 read | $QEMU_IO $TEST_IMG | _filter_qemu_io + +_check_test_img + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 |