#!/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