qemu/tests/qemu-iotests/187

#!/usr/bin/env bash
# group: rw auto
#
# Test switching between read-only and read-write
#
# Copyright (C) 2017 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"

status=1	# failure is the default!

_cleanup()
{
    _cleanup_test_img
    _rm_test_img "$TEST_IMG.2"
    _rm_test_img "$TEST_IMG.3"
}
trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks
. ./common.rc
. ./common.filter

_supported_fmt qcow2
_supported_proto file fuse

size=64M
_make_test_img $size

echo
echo "Start from read-only"
echo

$QEMU_IO -r -c 'write 0 64k' $TEST_IMG | _filter_qemu_io
$QEMU_IO -r -c 'reopen -w' -c 'write 0 64k' $TEST_IMG | _filter_qemu_io
$QEMU_IO -r -c 'reopen -w' -c 'reopen -r' -c 'write 0 64k' $TEST_IMG | _filter_qemu_io

echo
echo "Start from read-write"
echo

$QEMU_IO -c 'write 0 64k' $TEST_IMG | _filter_qemu_io
$QEMU_IO -c 'reopen -r' -c 'write 0 64k' $TEST_IMG | _filter_qemu_io
$QEMU_IO -c 'reopen -r' -c 'reopen -w' -c 'write 0 64k' $TEST_IMG | _filter_qemu_io


# success, all done
echo "*** done"
rm -f $seq.full
status=0