Archipelago » qemu

#!/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