#!/bin/bash
#
# Test Quorum block driver
#
# Copyright (C) 2013 Nodalink, SARL.
#
# 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=benoit@irqsave.net

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

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!

_cleanup()
{
    rm -rf $TEST_DIR/1.raw
    rm -rf $TEST_DIR/2.raw
    rm -rf $TEST_DIR/3.raw
}
trap "_cleanup; exit \$status" 0 1 2 3 15

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

_supported_fmt raw
_supported_proto file
_supported_os Linux

function do_run_qemu()
{
    echo Testing: "$@" | _filter_imgfmt
    $QEMU -nographic -qmp stdio -serial none "$@"
    echo
}

function run_qemu()
{
    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_qmp\
                          | _filter_qemu_io | _filter_generated_node_ids
}

test_quorum=$($QEMU_IMG --help|grep quorum)
[ "$test_quorum" = "" ] && _supported_fmt quorum

quorum="driver=raw,file.driver=quorum,file.vote-threshold=2"
quorum="$quorum,file.children.0.file.filename=$TEST_DIR/1.raw"
quorum="$quorum,file.children.1.file.filename=$TEST_DIR/2.raw"
quorum="$quorum,file.children.2.file.filename=$TEST_DIR/3.raw"
quorum="$quorum,file.children.0.driver=raw"
quorum="$quorum,file.children.1.driver=raw"
quorum="$quorum,file.children.2.driver=raw"

echo
echo "== creating quorum files =="

size=10M

TEST_IMG="$TEST_DIR/1.raw" _make_test_img $size
TEST_IMG="$TEST_DIR/2.raw" _make_test_img $size
TEST_IMG="$TEST_DIR/3.raw" _make_test_img $size

echo
echo "== writing images =="

$QEMU_IO -c "open -o $quorum" -c "write -P 0x32 0 $size" | _filter_qemu_io

echo
echo "== checking quorum write =="

$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/1.raw" | _filter_qemu_io
$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io
$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/3.raw" | _filter_qemu_io

echo
echo "== corrupting image =="

$QEMU_IO -c "write -P 0x42 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io

echo
echo "== checking quorum correction =="

$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io

echo
echo "== checking mixed reference/option specification =="

run_qemu <<EOF
{ "execute": "qmp_capabilities" }
{ "execute": "blockdev-add",
    "arguments": {
        "options": {
            "node-name": "drive2",
            "driver": "$IMGFMT",
            "file": {
                "driver": "file",
                "filename": "$TEST_DIR/2.raw"
            }
        }
    }
}
{ "execute": "blockdev-add",
    "arguments": {
        "options": {
            "driver": "quorum",
            "id": "drive0-quorum",
            "vote-threshold": 2,
            "children": [
                {
                    "driver": "$IMGFMT",
                    "file": {
                        "driver": "file",
                        "filename": "$TEST_DIR/1.raw"
                    }
                },
                "drive2",
                {
                    "driver": "$IMGFMT",
                    "file": {
                        "driver": "file",
                        "filename": "$TEST_DIR/3.raw"
                    }
                }
            ]
        }
    }
}
{ "execute": "human-monitor-command",
    "arguments": {
        "command-line": 'qemu-io drive0-quorum "read -P 0x32 0 $size"'
    }
}
{ "execute": "quit" }
EOF

echo
echo "== using quorum rewrite corrupted mode =="

quorum="$quorum,file.rewrite-corrupted=on"

$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io

echo
echo "== checking that quorum has corrected the corrupted file =="

$QEMU_IO -c "read -P 0x32 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io

echo
echo "== breaking quorum =="

$QEMU_IO -c "write -P 0x41 0 $size" "$TEST_DIR/1.raw" | _filter_qemu_io
$QEMU_IO -c "write -P 0x42 0 $size" "$TEST_DIR/2.raw" | _filter_qemu_io

echo
echo "== checking that quorum is broken =="

$QEMU_IO -c "open -o $quorum" -c "read -P 0x32 0 $size" | _filter_qemu_io

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