Current File : //usr/share/initramfs-tools/scripts/local-top/iscsi
#!/bin/sh
PREREQ=""
prereqs()
{
echo "$PREREQ"
}
case $1 in
# get pre-requisites
prereqs)
prereqs
exit 0
;;
esac
parse_root_param ()
{
target="$1"
auth="$2"
OLDIFS="$IFS"
IFS=":"
set -- $target
IFS="$OLDIFS"
tmp_ISCSI_TARGET_IP="$1"
if [ -n "$2" ] ; then
if [ x"$2" != x"6" ] ; then
echo "Warning: unsupported protocol specified for iSCSI root parameter, assuming 6 (TCP)" >&2
fi
fi
tmp_ISCSI_TARGET_PORT="$3"
tmp_ISCSI_ROOT_LUN="$4"
tmp_ISCSI_TARGET_NAME="$5"
shift 5
while [ -n "$1" ] ; do
tmp_ISCSI_TARGET_NAME="${tmp_ISCSI_TARGET_NAME}:$1"
shift
done
if [ -z "$tmp_ISCSI_TARGET_IP" ] || [ -z "$tmp_ISCSI_TARGET_NAME" ] ; then
echo "Warning: empty iSCSI IP / target name currently not supported for root=iscsi:, ignoring parameter" >&2
return
fi
OLDIFS="$IFS"
IFS=":"
set -- $auth
IFS="$OLDIFS"
tmp_ISCSI_USERNAME=""
tmp_ISCSI_PASSWORD=""
tmp_ISCSI_IN_USERNAME=""
tmp_ISCSI_IN_PASSWORD=""
if [ $# -gt 4 ] ; then
echo "Warning: invalid authentication for root=iscsi:, ignoring" >&2
return
fi
if [ $# -gt 0 ] ; then
tmp_ISCSI_USERNAME="$1"
tmp_ISCSI_PASSWORD="$2"
if [ $# -gt 2 ] ; then
tmp_ISCSI_IN_USERNAME="$3"
tmp_ISCSI_IN_PASSWORD="$4"
fi
fi
ISCSI_TARGET_IP="$tmp_ISCSI_TARGET_IP"
ISCSI_TARGET_PORT="$tmp_ISCSI_TARGET_PORT"
ISCSI_TARGET_NAME="$tmp_ISCSI_TARGET_NAME"
ISCSI_ROOT_LUN="$tmp_ISCSI_ROOT_LUN"
if [ -n "$tmp_ISCSI_USERNAME" ] ; then
ISCSI_USERNAME="$tmp_ISCSI_USERNAME"
ISCSI_PASSWORD="$tmp_ISCSI_PASSWORD"
fi
if [ -n "$tmp_ISCSI_IN_USERNAME" ] ; then
ISCSI_IN_USERNAME="$tmp_ISCSI_IN_USERNAME"
ISCSI_IN_PASSWORD="$tmp_ISCSI_IN_PASSWORD"
fi
ISCSI_HAD_ROOT=yes
}
do_iscsi_login ()
{
# Bring in the main config
. /conf/initramfs.conf
for conf in conf/conf.d/*; do
[ -f ${conf} ] && . ${conf}
done
. /scripts/functions
udevadm settle
IBFT_DHCP_DEVICE=""
if [ -n "$ISCSI_AUTO" ] ; then
# try to auto-configure network interface based
# on firmware values
modprobe iscsi_ibft
iscsistart -N
# write out /run/net-$IFACE.conf based on what
# was in the firmware
iscsistart -f | while read k eq v; do
case "${k} ${eq} ${v}" in
("# BEGIN RECORD"*)
DEVICE=""
PROTO="none"
IPV4ADDR=""
IPV4NETMASK=""
IPV4GATEWAY=""
IPV4DNS0=""
IPV4DNS1=""
UPTIME="0"
DHCPLEASETIME="0"
DOMAINSEARCH=""
continue
;;
("# END RECORD"*)
if [ -n "$DEVICE" ] ; then
{
echo "DEVICE='${DEVICE}'"
echo "PROTO='${PROTO}'"
echo "IPV4ADDR='${IPV4ADDR}'"
echo "IPV4BROADCAST=''"
echo "IPV4NETMASK='${IPV4NETMASK}'"
echo "IPV4GATEWAY='${IPV4GATEWAY}'"
echo "IPV4DNS0='${IPV4DNS0}'"
echo "IPV4DNS1='${IPV4DNS1}'"
echo "HOSTNAME=''"
echo "DNSDOMAIN=''"
echo "NISDOMAIN=''"
echo "ROOTSERVER=''"
echo "ROOTPATH=''"
echo "UPTIME='${UPTIME}'"
echo "DHCPLEASETIME='${DHCPLEASETIME}'"
echo "DOMAINSEARCH=''"
} > "/run/net-${DEVICE}.conf.ibft"
if [ "$PROTO" != "dhcp" -a "$DHCPLEASETIME" = "0" ]; then
# this is static ibft configuration.
mv "/run/net-${DEVICE}.conf.ibft" "/run/net-${DEVICE}.conf"
else
IBFT_DHCP_DEVICE="$DEVICE"
fi
echo "${DEVICE}" > /run/initramfs/open-iscsi.interface
# iscsistart -N doesn't set the default gateway. Therefore,
# we need to add it ourselves. However, the ip command is
# only available if we use busybox in the initramfs (it's
# in open-iscsi's Recommends), so check for that.
if [ -n "${IPV4GATEWAY}" ] && which ip >/dev/null 2>&1 ; then
ip route add default via "${IPV4GATEWAY}"
fi
fi
continue
;;
esac
if [ "${eq}" != "=" ] ; then
continue
fi
case "${k}" in
iface.ipaddress) IPV4ADDR="${v}" ;;
iface.subnet_mask) IPV4NETMASK="${v}" ;;
iface.gateway) IPV4GATEWAY="${v}" ;;
iface.primary_dns) IPV4DNS0="${v}" ;;
iface.secondary_dns) IPV4DNS1="${v}" ;;
iface.net_ifacename) DEVICE="${v}" ;;
iface.bootproto)
case "${v}" in
DHCP) PROTO="dhcp" ;;
STATIC) PROTO="static" ;;
*) PROTO="${v}" ;;
esac
;;
esac
done
fi
# run configure_networking even if we have iscsi_auto, because there
# could be other network interfaces that need to be configured
# also, if we set up DHCP iBFT, we need ipconfig to run so it creates
# a proper /run/net-${DEVICE}.conf file that includes the DNS search
# domain, which we don't get in our iBFT data (see LP: #1806777)
configure_networking
if [ -n "$IBFT_DHCP_DEVICE" ]; then
if ! [ -e "/run/net-${DEVICE}.conf" ] ; then
echo "WARN: ipconfig dhcp failed, using iSCSI iBFT config - DNS search domain may be missing at runtime" >&2
# We have DHCP iBFT, but ipconfig DHCP failed;
# so we should fallback to just using the iBFT config,
# though that will not include the DNS search domain
mv "/run/net-${DEVICE}.conf.ibft" "/run/net-${DEVICE}.conf"
# need to re-run configure_networking to process conf file
configure_networking
fi
fi
# Save network device we configured via configure_networking, but only
# if we didn't already get one from autoconfiguration (then we always
# prefer that).
if ! [ -e /run/initramfs/open-iscsi.interface ] ; then
if [ -z "${DEVICE}" ] || ! [ -e "/run/net-${DEVICE}.conf" ] ; then
for i in /run/net-*.conf ; do
[ -e "${i}" ] && { . "${i}" ; break ; }
done
fi
if [ -n "${DEVICE}" ] ; then
echo "${DEVICE}" > /run/initramfs/open-iscsi.interface
else
for i in /run/net6-*.conf; do
[ -e "${i}" ] && { . "${i}" ; break ; }
done
fi
if [ -z "${DEVICE}" ] && [ -n "${DEVICE6}" ] ; then
echo "${DEVICE6}" > /run/initramfs/open-iscsi.interface
fi
fi
modprobe iscsi_tcp
modprobe crc32c
# If iscsiuio is present in the initramfs, start it, in case UIO
# offloading is required.
if [ -x /sbin/iscsiuio ] ; then
start-stop-daemon --start --quiet --pidfile /run/initramfs/iscsiuio.pid \
--startas /sbin/iscsiuio --name iscsiuio \
--exec /sbin/iscsiuio -- --pid=/run/initramfs/iscsiuio.pid || :
fi
if [ -z $ISCSI_AUTO ]; then
if [ -z $ISCSI_INITIATOR ]; then
. /etc/initiatorname.iscsi
ISCSI_INITIATOR=$InitiatorName
fi
if [ -z $ISCSI_TARGET_PORT ]; then
ISCSI_TARGET_PORT=3260
fi
if [ -z $ISCSI_TARGET_GROUP ]; then
ISCSI_TARGET_GROUP=1
fi
iscsistart -i $ISCSI_INITIATOR -t $ISCSI_TARGET_NAME \
-g $ISCSI_TARGET_GROUP -a $ISCSI_TARGET_IP \
-p $ISCSI_TARGET_PORT \
${ISCSI_USERNAME:+-u "$ISCSI_USERNAME"} \
${ISCSI_PASSWORD:+-w "$ISCSI_PASSWORD"} \
${ISCSI_IN_USERNAME:+-U "$ISCSI_IN_USERNAME"}\
${ISCSI_IN_PASSWORD:+-W "$ISCSI_IN_PASSWORD"}
else
modprobe iscsi_ibft
iscsistart -b
fi
if [ -z $ISCSI_TARGET_PORT ]; then
ISCSI_TARGET_PORT=3260
fi
if [ -z $ISCSI_TARGET_GROUP ]; then
ISCSI_TARGET_GROUP=1
fi
for i in $ISCSI_TARGET_IP; do
iscsistart -i $ISCSI_INITIATOR -t $ISCSI_TARGET_NAME \
-g $ISCSI_TARGET_GROUP -a $i \
-p $ISCSI_TARGET_PORT \
${ISCSI_USERNAME:+-u "$ISCSI_USERNAME"} \
${ISCSI_PASSWORD:+-w "$ISCSI_PASSWORD"} \
${ISCSI_IN_USERNAME:+-U "$ISCSI_IN_USERNAME"}\
${ISCSI_IN_PASSWORD:+-W "$ISCSI_IN_PASSWORD"}
done
}
parse_iscsi_ops ()
{
[ -r /etc/iscsi.initramfs ] && . /etc/iscsi.initramfs
for x in $(cat /proc/cmdline); do
case ${x} in
iscsi_auto)
ISCSI_AUTO=true
;;
iscsi_initiator=*)
ISCSI_INITIATOR="${x#iscsi_initiator=}"
;;
iscsi_target_name=*)
ISCSI_TARGET_NAME="${x#iscsi_target_name=}"
;;
iscsi_target_ip=*)
ISCSI_TARGET_IP="${x#iscsi_target_ip=}"
;;
iscsi_target_port=*)
ISCSI_TARGET_PORT="${x#iscsi_target_port=}"
;;
iscsi_target_group=*)
ISCSI_TARGET_GROUP="${x#iscsi_target_group=}"
;;
iscsi_username=*)
ISCSI_USERNAME="${x#iscsi_username=}"
;;
iscsi_password=*)
ISCSI_PASSWORD="${x#iscsi_password=}"
;;
iscsi_in_username=*)
ISCSI_IN_USERNAME="${x#iscsi_in_username=}"
;;
iscsi_in_password=*)
ISCSI_IN_PASSWORD="${x#iscsi_in_password=}"
;;
root=iscsi:*@*)
x="${x##root=iscsi:}"
parse_root_param "${x#*@}" "${x%%@*}"
;;
root=iscsi:*)
parse_root_param "${x##root=iscsi:}" ""
;;
esac
done
}
if [ ! -x /sbin/iscsistart ]; then
exit 0
fi
parse_iscsi_ops
if ( [ -z $ISCSI_TARGET_NAME ] || [ -z $ISCSI_TARGET_IP ] ) && [ -z $ISCSI_AUTO ]; then
exit 0
fi
do_iscsi_login
udevadm settle
# The second check is to allow us to use multiple root= parameters. That way
# one may specify root=iscsi:... root=UUID=... to mount partitions on an iSCSI
# disk. (The latter value will overwrite the former for purposes of the main
# initramfs scripts, but our loop that scans /proc/cmdline will still detect
# the former and set proper parameters.
if [ -n "$ISCSI_HAD_ROOT" ] && [ x"${ROOT##iscsi:}" != x"${ROOT}" ] ; then
if [ -z "$ISCSI_ROOT_LUN" ] ; then
ISCSI_ROOT_LUN=0
fi
found=0
# FIXME: RFC 4173 defines the LUN field to be more complicated and that
# the same LUN may have multiple representations.
for disk in /dev/disk/by-path/*-iscsi-*-"${ISCSI_ROOT_LUN}" ; do
# Resolve device name, as the colons in the by-path name will
# cause mount to think that this is a NFS share, which we don't
# want.
if ! disk="$(readlink -f "$disk")" ; then
continue
fi
# Try to load file system type module (ignore errors), otherwise
# this won't succeed.
if fstype=$(get_fstype "$disk") ; then
modprobe "$fstype" || :
ROOTFSTYPE="$fstype"
fi
# Try to mount read-only and see if it's the right filesystem.
# If so, record the device name but umount again, because we
# want to be able to do an fsck on it.
if mount -r -t "${ROOTFSTYPE:-auto}" ${ROOTFLAGS} "${disk}" ${rootmnt} ; then
if [ -d ${rootmnt}/proc ] ; then
# This will be sourced by init after this hook has run.
echo "export ROOT=$disk" >> /conf/param.conf
if [ -n "$ROOTFSTYPE" ] && [ x"$ROOTFSTYPE" != x"auto" ] ; then
echo "export ROOTFSTYPE=$ROOTFSTYPE" >> /conf/param.conf
fi
found=1
fi
umount ${rootmnt}
if [ $found -eq 1 ] ; then
break
fi
fi
done
fi
exit 0
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