#!/bin/bash

#

# Open-iSCSI Regression Test Utility

# Copyright (C) 2004 Dmitry Yusupov

# maintained by open-iscsi@googlegroups.com

#

# 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.

#

# See the file COPYING included with this distribution for more details.

#

PATH=".:${PATH}"

FSTYPE="${FSTYPE:-ext3}"

DEFAULTMOUNTOPTS='-o _netdev'

[ -z "${MOUNTOPTS}" ] && MOUNTOPTS="${DEFAULTMOUNTOPTS}"

# to avoid mount looking for fstype

MOUNTOPTIONS="${MOUNTOPTIONS} -t ${FSTYPE}"

MKFSCMD="${MKFSCMD:-mkfs.${FSTYPE}} ${MKFSOPTS}"

PARTITIONSUFFIX="1"

BONNIEPARAMS="${BONNIEPARAMS:--r0 -n10:0:0 -s16 -uroot -f -q}"

trap regress_signal INT QUIT TERM

regress_signal() {

    printf "\nterminating, restore defaults: "

	# use the other function to clean up

	imm_data_en="Yes"

	initial_r2t_en="No"

	hdrdgst_en="None,CRC32C"

	datdgst_en="None,CRC32C"

	c="${iscsiadm} -m node -T $target -p $ipnr -o update"

	first_burst="$((256*1024))"

	max_burst="$((16*1024*1024-1024))"

	max_recv_dlength="$((128*1024))"

	max_r2t="1"

	update_cfg

	${iscsiadm} -m node -T $target -p $ipnr --logout 2>/dev/null >/dev/null

    printf "done\n"

    exit 0

}

function update_cfg() {

	c="${iscsiadm} -m node -T $target -p $ipnr -o update"

	$c -n node.session.iscsi.ImmediateData -v $imm_data_en

	$c -n node.session.iscsi.InitialR2T -v $initial_r2t_en

	$c -n node.conn[0].iscsi.HeaderDigest -v $hdrdgst_en

	$c -n node.conn[0].iscsi.DataDigest -v $datdgst_en

	$c -n node.session.iscsi.FirstBurstLength -v $first_burst

	$c -n node.session.iscsi.MaxBurstLength -v $max_burst

	$c -n node.conn[0].iscsi.MaxRecvDataSegmentLength -v $max_recv_dlength

	$c -n node.session.iscsi.MaxOutstandingR2T -v $max_r2t

}

function disktest_run() {

	bsizes="512 1024 2048 4096 8192 16384 32768 65536 131072 1000000"

	test "x$bsize" != x && bsizes=$bsize

	test "x$bsize" = xbonnie && return 0;

	for bs in $bsizes; do

		echo -n "disktest -T2 -K8 -B$bs -r -ID $device: "

		if ! ${disktest} -T2 -K8 -B$bs -r -ID $device >/dev/null; then

			echo "FAILED"

			return 1;

		fi

		echo "PASSED"

		echo -n "disktest -T2 -K8 -B$bs -E16 -w -ID $device: "

		if ! ${disktest} -T2 -K8 -B$bs -E16 -w -ID $device >/dev/null;then

			echo "FAILED"

			return 1;

		fi

		echo "PASSED"

	done

	return 0;

}

function fdisk_run() {

	echo -n "sfdisk -Lqf $device: "

	sfdisk -Lqf $device >/dev/null 2>/dev/null <<-EOF

	0,

	;

	;

	;

	EOF

	rc=$?

	if [ $rc -ne 0 ]; then

		echo "FAILED"

		return 1;

	fi

	echo "PASSED"

	return 0;

}

function mkfs_run() {

	echo -n "${MKFSCMD} $device_partition: "

	if ! ${MKFSCMD} $device_partition 2>/dev/null >/dev/null; then

		echo "FAILED"

		return 1;

	fi

	echo "PASSED"

	return 0;

}

function bonnie_run() {

	dir="/tmp/iscsi.bonnie.regression.$record.$RANDOM"

	umount $dir 2>/dev/null >/dev/null

	rm -rf $dir; mkdir $dir

	echo -n "mount $dir: "

	if ! mount ${MOUNTOPTIONS} $device_partition $dir; then

		echo "FAILED"

		return 1;

	fi

	echo "PASSED"

	echo -n "bonnie++ ${BONNIEPARAMS}: "

	pushd $dir >/dev/null

	${bonnie} ${BONNIEPARAMS} 2>/dev/null >/dev/null

	rc=$?

	popd >/dev/null

	umount $dir 2>/dev/null >/dev/null

	rmdir ${dir}

	if [ $rc -ne 0 ]; then

		echo "FAILED"

		return 1;

	fi

	echo "PASSED"

	return 0;

}

function fatal() {

	echo "regression.sh: $1"

	echo "Usage: regression.sh [-f | <targetname> <ipnumber#> ] <device> [test#[:#]] [bsize]"

	exit 1

}

############################ main ###################################

disktest=`which disktest`

iscsiadm=`which iscsiadm`

bonnie=`which bonnie++`

datfile=`dirname $0`"/regression.dat"

test ! -e ${datfile} && fatal "can not find regression.dat"

test ! -e ${disktest} && fatal "can not find disktest"

test ! -e ${iscsiadm} && fatal "can not find iscsiadm"

test ! -e ${bonnie} && fatal "can not find bonnie++"

if test x$1 = "x-f" -o x$1 = "x--format"; then

	test x$2 = x && fatal "SCSI device parameter error"

	device=$2

else

	test x$1 = x && fatal "target name parameter error"

	test x$2 = x && fatal "ipnumber parameter error"

	test x$3 = x && fatal "SCSI device parameter error"

	target="$1"

	ipnr="$2"

	device=$3

fi

device_dir="$(dirname ${device})"

device_partition=''

case "${device_dir}" in

	# /dev/sdaX

	/dev) device_partition="${device}1" ;;

	# /dev/disk/by-id/scsi-${ID_SERIAL}-part1

	# where ID_SERIAL is SCSI disk SERIAL from scsi_id

	/dev/disk/by-id|/dev/disk/by-path) device_partition="${device}-part1" ;;

	# upcoming stuff

	/dev/iscsi/*) device_partition="${device}-part1" ;;

esac

if test x$1 = "x-f" -o x$1 = "x--format"; then

	mkfs_run

	exit

fi

if [ -z "${device_partition}" ]; then

	echo 'Unable to find device name for first partition.' >&2

	exit 1

fi

test "x$4" != x && begin="$4"

test "x$5" != x && bsize="$5"

if test "x$begin" != "x"; then

	end="${begin/*:}"

	begin="${begin/:*}"

fi

# don't say we didn't warn you

if [ -z "${SKIP_WARNING}" ]; then

	cat <<-EOF

	BIG FAT WARNING!

	Open-iSCSI Regression Test Suite is about to start. It is going

	to use "$device" for its testing. iSCSI session could be re-opened

	during the tests several times and as the result device name could

	not match provided device name if some other SCSI activity happened

	during the test.

	Are you sure you want to continue? [y/n]:

	EOF

	read line

	if test x$line = xn -o x$line = xN -o x$line = xno -o x$line = xNO; then

		echo "aborting..."

		exit

	fi

fi

i=0

cat ${datfile} | while read line; do

	if echo $line | grep "^#" >/dev/null; then continue; fi

	if echo $line | grep "^$" >/dev/null; then continue; fi

	if test x$begin != x; then

		if test x$begin != x$i -a x$end = x; then

			let i=i+1

			continue

		elif test x$begin != x -a x$end != x; then

			if test $i -lt $begin -o $i -gt $end; then

				let i=i+1

				continue

			fi

		fi

	fi

	imm_data_en=`echo $line | awk '/^[YesNo]+/ {print $1}'`

	if test x$imm_data_en = x; then continue; fi

	initial_r2t_en=`echo $line | awk '{print $2}'`

	hdrdgst_en=`echo $line | awk '{print $3}'`

	datdgst_en=`echo $line | awk '{print $4}'`

	first_burst=`echo $line | awk '{print $5}'`

	max_burst=`echo $line | awk '{print $6}'`

	max_recv_dlength=`echo $line | awk '{print $7}'`

	max_r2t=`echo $line | awk '{print $8}'`

	# ensure we are logged out

	${iscsiadm} -m node -T $target -p $ipnr --logout 2>/dev/null >/dev/null

	# set parameters for next run

	update_cfg

	echo "================== TEST #$i BEGIN ===================="

	echo "ImmediateData = $imm_data_en"

	echo "InitialR2T = $initial_r2t_en"

	echo "HeaderDigest = $hdrdgst_en"

	echo "DataDigest = $datdgst_en"

	echo "FirstBurstLength = $first_burst"

	echo "MaxBurstLength = $max_burst"

	echo "MaxRecvDataSegmentLength = $max_recv_dlength"

	echo "MaxOutstandingR2T = $max_r2t"

	# login for new test

	# catch errors on this

	if ! ${iscsiadm} -m node -T $target -p $ipnr --login; then break; fi

	while [ ! -e $device ] ; do sleep 1 ; done

	if ! disktest_run; then break; fi

	if ! fdisk_run; then break; fi

	if ! mkfs_run; then break; fi

	if ! bonnie_run; then break; fi

	let i=i+1

done

regress_signal

echo

echo "===================== THE END ========================"