check_iscsi_root() {

function verify_path()

    local devname=$1

{

    local sysfs_path

    local devname="$1" path="$2"

    sysfs_path=$(/sbin/udevadm info -q path -n $devname 2> /dev/null)

    if [[ ! -d "${path}" ]]

    if [ -z "$sysfs_path" ] ; then

    then

	sysfs_path="/block${devname##/dev}"

	if [[ "${path}" =~ .+\ .+ ]]

    fi

	then

    if [ ! -d /sys$sysfs_path ] ; then

	    error 2 "iSCSI device ${devname} is connected to more than one iSCSI target!"

	return;

	    # NEVER REACHED!!

	else

	    # Does not seem to be an iSCSI attached device

	    return 1

	fi

    if [ ! -d device ] ; then

function check_iscsi()

	# no device link; return

{

	popd > /dev/null

    local devname="$1" retval=1

	return;

    local sysfs_path=$(/sbin/udevadm info -q path -n "${devname}" 2>/dev/null) ip target startup

    # Do we have a valid device?

    [[ -z "${sysfs_path}" ]] && sysfs_path="/block${devname##/dev}"

    sysfs_path="/sys${sysfs_path}"

    [[ ! -d "${sysfs_path}" ]] && return 1		# Nope, return false

    # Do we have a valid device link?

    [[ ! -d "${sysfs_path}/device" ]] && sysfs_path="${sysfs_path%/*}"

    [[ ! -d "${sysfs_path}/device" ]] && return 1	# Nope, return false

    # Is device an iSCSI device?

    sysfs_path="${sysfs_path}/device/../.."

    ip="$(echo ${sysfs_path}/connection*)"

    verify_path "${devname}" "${ip}" || return 1	# Nope, return false

    ip="${ip}/iscsi_connection/${ip##*/}/persistent_"

    [[ ! -r "${ip}address" || ! -r "${ip}port" ]] &&

	error 2 "iSCSI device ${devname} connected to iSCSI target without any persistent_{address,port}!"

    ip="$(cat "${ip}address"):$(cat "${ip}port")"

    target=$(echo ${sysfs_path}/iscsi_session/*)

    verify_path "${devname}" "${target}" || return 1	# Nope, return false

    target="${target}/targetname"

    [[ ! -r "${target}" ]] &&

	error 2 "iSCSI device ${devname} connected to iSCSI target without any targetname!"

    target="$(cat ${target})"

    # Yes, figure out whether it has been correctly configured!

    [[ ! -x "${_iadm_}" ]] &&

	error 2 "iSCSI device ${devname} connected to iSCSI target, but no ${_iadm_} command available!"

    startup="$(

	${_iadm_} -m node -p "${ip}" -T "${target}" 2>/dev/null | grep 'node.conn\[0\].startup'

    )"

    startup="${startup##* }"

    startup="${startup%% *}"

    if [[ "${startup}" != "onboot" ]]

    then

	[[ -z "${startup}" ]] && return 1	# Oops, no parameter - not an iSCSI, return false

	## Either:

	#echo >&2 "WARNING: iSCSI device ${devname} is using 'node.conn[0].startup = ${startup}',"

	#echo >&2 "WARNING: setting it to 'onboot' instead."

	#${_iadm_} -m node -p "${ip}" -T "${target}" -o update -n 'node.conn[0].startup' -v onboot

	## or:

	echo >&2 "WARNING: iSCSI device ${devname} is using 'node.conn[0].startup = ${startup}'!"

	echo >&2 "WARNING: System not bootable with this setting, need to be set to 'onboot' instead, using:"

	echo >&2 "

	${_iadm_} -m node -p '${ip}' -T '${target}' -o update -n 'node.conn[0].startup' -v onboot"

    cd -P device

    # Yes, is attached to an iSCSI device

    cd ../..

    return 0

    if [ -d connection* ]; then

	cd -P connection*

	cid=${PWD#*connection}

	sid=${cid%%:*}

	if [ -d /sys/class/iscsi_session/session$sid ]; then

	    cd -P /sys/class/iscsi_session/session$sid

	    echo $(basename $PWD)

	fi

    fi

    popd > /dev/null

for bd in $blockdev; do

_iadm_="/sbin/iscsiadm"

# Are system device(s) attached to iSCSI devices?

# In case they are, ensure

#	(1) that the iSCSI gets included in the "initrd"

# and

#	(2) that the iSCSI sessions have been configured with "node.conn[0].startup = onboot".

for bd in $blockdev

do

    sid=$(check_iscsi_root $bd)

    check_iscsi $bd && root_iscsi=1

    if [ "$sid" ]; then

    	root_iscsi=1

    	iscsi_sessions="$iscsi_sessions ${sid#session}"

    fi

    for session in $iscsi_sessions; do

    # Copy the iscsi configuration

	read TargetName${session} </sys/class/iscsi_session/session${session}/targetname

	read TargetAddress${session} </sys/class/iscsi_connection/connection${session}:0/address

        TargetAddress=$(< /sys/class/iscsi_connection/connection${session}:0/address)

	read TargetPort${session} </sys/class/iscsi_connection/connection${session}:0/port

	save_var TargetName${session}

	save_var TargetAddress${session}

	save_var TargetPort${session}

        cmd=ip

        case "$TargetAddress" in

        *:*)

            cmd="ip -6"

        esac

        interface="$interface $($cmd route get "$TargetAddress" | sed -rn 's/.*\<dev ([^ ]*)\>.*/\1/p; T; q')"

        unset TargetAddress cmd

    done

    # copy the iscsi configuration

    save_var TargetPort 3260 # in case the port was not defined via command line we assign a default port

    # In case target port was not defined via command line, assign default port

    save_var TargetPort 3260