Archipelago » qemu

#!/bin/bash

#

# Test that AIO requests are drained before an image is closed. This used

# to segfault because the request coroutine kept running even after the

# BlockDriverState was freed.

#

# Copyright (C) 2011 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

# This works for any image format (though unlikely to segfault for raw)

_supported_fmt generic

_supported_proto generic

_supported_os Linux

echo

echo === Prepare image ===

echo

CLUSTER_SIZE=65536

_make_test_img 64M

# Allocate every other cluster so that afterwards a big write request will

# actually loop a while and issue many I/O requests for the lower layer

for i in $(seq 0 128 4096); do echo "write ${i}k 64k"; done | $QEMU_IO "$TEST_IMG" | _filter_qemu_io

echo

echo === AIO request during close ===

echo

$QEMU_IO -c "aio_write 0 4M" -c "close" "$TEST_IMG" | _filter_qemu_io

_check_test_img

# success, all done

echo "*** done"

rm -f $seq.full

status=0