Archipelago » qemu

#!/bin/bash

#

# Commit changes to backing file

#

# 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

    rm -f $TEST_IMG.base

    rm -f $TEST_IMG.orig

}

trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks

. ./common.rc

. ./common.filter

. ./common.pattern

# Any format supporting backing files

_supported_fmt qcow qcow2 vmdk qed

_supported_proto generic

_supported_os Linux

TEST_OFFSETS="0 4294967296"

_make_test_img 6G

echo "Filling base image"

echo

for offset in $TEST_OFFSETS; do

    # Some clusters with alternating backing file/image file reads

    io writev $(( offset )) 512 1024 64

    # Complete backing clusters

    io writev $(( offset  + 64 * 1024))  65536 65536 1

done

_check_test_img

echo "Creating test image with backing file"

echo

mv $TEST_IMG $TEST_IMG.base

_make_test_img -b $TEST_IMG.base 6G

echo "Filling test image"

echo

for offset in $TEST_OFFSETS; do

    # Some clusters with alternating backing file/image file reads

    io writev $(( offset + 512 )) 512 1024 64

    # Complete test image clusters

    io writev $(( offset + 64 * 1024 + 65536))  65536 65536 1

done

_check_test_img

$QEMU_IMG commit $TEST_IMG

mv $TEST_IMG.base $TEST_IMG

echo "Reading from the backing file"

echo

for offset in $TEST_OFFSETS; do

    # Some clusters with alternating backing file/image file reads

    io readv $(( offset )) 512 1024 64

    io readv $(( offset + 512 )) 512 1024 64

    # Complete test image clusters

    io readv $(( offset  + 64 * 1024))  65536 65536 1

    io readv $(( offset + 64 * 1024 + 65536))  65536 65536 1

    # Empty sectors

    io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1

done

_check_test_img

# success, all done

echo "*** done"

rm -f $seq.full

status=0