#!/usr/bin/env bash
##
## qemu-img compare test (qcow2 only ones)
##
##
## Copyright (C) 2013 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=famz@redhat.com

seq=`basename $0`
echo "QA output created by $seq"

status=1        # failure is the default!

_cleanup()
{
    echo "Cleanup"
    _cleanup_test_img
    _rm_test_img "${TEST_IMG2}"
    rm -f "$TEST_DIR/blkdebug.conf"
}
trap "_cleanup; exit \$status" 0 1 2 3 15

_compare()
{
    $QEMU_IMG compare "$@" "$TEST_IMG" "${TEST_IMG2}"
    echo $?
}

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

_supported_fmt qcow2
_supported_proto file
_supported_os Linux
# blkdebug can only inject errors on bs->file
_unsupported_imgopts data_file

# Setup test basic parameters
TEST_IMG2=$TEST_IMG.2
CLUSTER_SIZE=4096
size=1024M

# Test cluster allocated in one, with IO error
cat > "$TEST_DIR/blkdebug.conf"<<EOF
[inject-error]
event = "read_aio"
errno = "5"
once ="off"
EOF
_make_test_img $size
cp "$TEST_IMG" "$TEST_IMG2"
io_pattern write 512 512 0 1 102
TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" _compare 2>&1 |\
    _filter_testdir | _filter_imgfmt

# Test cluster allocated in one, with different sizes and IO error in the part
# that exists only in one image
cat > "$TEST_DIR/blkdebug.conf"<<EOF
[inject-error]
event = "read_aio"
errno = "5"
once ="off"
EOF
_make_test_img $size
TEST_IMG="$TEST_IMG2" _make_test_img 0
io_pattern write 512 512 0 1 102
TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" _compare 2>&1 |\
    _filter_testdir | _filter_imgfmt

# Cleanup
status=0