Archipelago » qemu

#!/bin/bash

#

# qcow2 pattern test with various cluster sizes

#

# Copyright (C) 2009 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

. ./common.pattern

# much of this could be generic for any format supporting compression.

_supported_fmt qcow qcow2

_supported_os Linux

TEST_OFFSETS="0 4294967296"

TEST_OPS="writev read write readv"

# Can't use 512 byte clusters, the tests use cluster halves

CLUSTER_SIZES="1024 4096 16384 65536"

for CLUSTER_SIZE in $CLUSTER_SIZES; do

    echo "Creating new image; cluster size: $CLUSTER_SIZE"

    echo

    _make_test_img 8G

    echo "Testing empty image"

    echo

    for offset in $TEST_OFFSETS; do

        echo "At offset $offset:"

        for op in $TEST_OPS; do

            io_test $op $offset $CLUSTER_SIZE 3

        done

        _check_test_img

    done

    echo "Compressing image"

    echo

    mv $TEST_IMG $TEST_IMG.orig

    $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -c $TEST_IMG.orig $TEST_IMG

    echo "Testing compressed image"

    echo

    for offset in $TEST_OFFSETS; do

        echo "With offset $offset:"

        for op in read readv; do

            io_test $op $offset $CLUSTER_SIZE 3

        done

        _check_test_img

    done

    echo "Testing compressed image with odd offsets"

    echo

    for offset in $TEST_OFFSETS; do

        # Some odd offset (1 sector), so tests will write to areas occupied partly

        # by old (compressed) data and empty clusters

        offset=$((offset + 512))

        echo "With offset $offset:"

        for op in $TEST_OPS; do

            io_test $op $offset $CLUSTER_SIZE 3

        done

        _check_test_img

    done

    echo "Creating another new image"

    echo

    _make_test_img 8G

    echo "More complex patterns"

    echo

    for offset in $TEST_OFFSETS; do

        echo test2: With offset $offset

        io_test2 $offset $CLUSTER_SIZE 4

        _check_test_img

    done

done

# success, all done

echo "*** done"

rm -f $seq.full

status=0