#!/usr/bin/env bash
#
# Check for one possible case of qcow2 refcount corruption.
#
# 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"

status=1	# failure is the default!

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

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

# currently only qcow2 allows for consistency checks using qemu-img
_supported_fmt qcow2
_supported_proto generic
# refcount_bits must be at least 4 so we can create ten internal snapshots
# (1 bit supports none, 2 bits support two, 4 bits support 14);
# snapshot are generally impossible with external data files
_unsupported_imgopts 'refcount_bits=\(1\|2\)[^0-9]' data_file

echo
echo "creating image"
_make_test_img 1M

for ((i=1;i<=10;i++)); do
    echo "savevm $i"
    $QEMU -nographic -hda "$TEST_IMG" -serial none -monitor stdio >/dev/null 2>&1 <<EOF
savevm test-$i
quit
EOF
done

echo
echo "checking image for errors"
_check_test_img

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