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#!/bin/sh
#
# Preferred format:
# root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
# [root=*] netroot=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
#
# Legacy formats:
# [net]root=[iscsi] iscsiroot=[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
# [net]root=[iscsi] iscsi_firmware
#
# root= takes precedence over netroot= if root=iscsi[...]
#
# This script is sourced, so root should be set. But let's be paranoid
[ -z "$root" ] && root=$(getarg root=)
if [ -z "$netroot" ]; then
for nroot in $(getargs netroot=); do
[ "${nroot%%:*}" = "iscsi" ] && break
done
if [ "${nroot%%:*}" = "iscsi" ]; then
netroot="$nroot"
else
for nroot in $(getargs netroot=); do
[ "${nroot%%:*}" = "dhcp" ] && break
done
netroot="$nroot"
fi
fi
[ -z "$iscsiroot" ] && iscsiroot=$(getarg iscsiroot=)
[ -z "$iscsi_firmware" ] && getargbool 0 rd.iscsi.firmware -y iscsi_firmware && iscsi_firmware="1"
[ -n "$iscsiroot" ] && [ -n "$iscsi_firmware" ] && die "Mixing iscsiroot and iscsi_firmware is dangerous"
type write_fs_tab > /dev/null 2>&1 || . /lib/fs-lib.sh
# Root takes precedence over netroot
if [ "${root%%:*}" = "iscsi" ]; then
if [ -n "$netroot" ]; then
echo "Warning: root takes precedence over netroot. Ignoring netroot"
fi
netroot=$root
# if root is not specified try to mount the whole iSCSI LUN
printf 'ENV{DEVTYPE}!="partition", SYMLINK=="disk/by-path/*-iscsi-*-*", SYMLINK+="root"\n' >> /etc/udev/rules.d/99-iscsi-root.rules
[ -n "$DRACUT_SYSTEMD" ] && systemctl is-active systemd-udevd && udevadm control --reload-rules
root=/dev/root
write_fs_tab /dev/root
fi
# If it's not empty or iscsi we don't continue
for nroot in $(getargs netroot); do
[ "${nroot%%:*}" = "iscsi" ] || continue
netroot="$nroot"
break
done
# Root takes precedence over netroot
if [ "${root}" = "/dev/root" ] && getarg "netroot=dhcp"; then
# if root is not specified try to mount the whole iSCSI LUN
printf 'ENV{DEVTYPE}!="partition", SYMLINK=="disk/by-path/*-iscsi-*-*", SYMLINK+="root"\n' >> /etc/udev/rules.d/99-iscsi-root.rules
[ -n "$DRACUT_SYSTEMD" ] && systemctl is-active systemd-udevd && udevadm control --reload-rules
fi
if [ -n "$iscsiroot" ]; then
[ -z "$netroot" ] && netroot=$root
# @deprecated
echo "Warning: Argument iscsiroot is deprecated and might be removed in a future"
echo "release. See 'man dracut.kernel' for more information."
# Accept iscsiroot argument?
[ -z "$netroot" ] || [ "$netroot" = "iscsi" ] \
|| die "Argument iscsiroot only accepted for empty root= or [net]root=iscsi"
# Override root with iscsiroot content?
[ -z "$netroot" ] || [ "$netroot" = "iscsi" ] && netroot=iscsi:$iscsiroot
fi
# iscsi_firmware does not need argument checking
if [ -n "$iscsi_firmware" ]; then
if [ "$root" != "dhcp" ] && [ "$netroot" != "dhcp" ]; then
[ -z "$netroot" ] && netroot=iscsi:
fi
modprobe -b -q iscsi_boot_sysfs 2> /dev/null
modprobe -b -q iscsi_ibft
# if no ip= is given, but firmware
echo "${DRACUT_SYSTEMD+systemctl is-active initrd-root-device.target || }[ -f '/tmp/iscsistarted-firmware' ]" > "$hookdir"/initqueue/finished/iscsi_started.sh
initqueue --unique --online /sbin/iscsiroot online "iscsi:" "$NEWROOT"
initqueue --unique --onetime --timeout /sbin/iscsiroot timeout "iscsi:" "$NEWROOT"
initqueue --unique --onetime --settled /sbin/iscsiroot online "iscsi:" "'$NEWROOT'"
fi
# ISCSI actually supported?
if ! [ -e /sys/module/iscsi_tcp ]; then
modprobe -b -q iscsi_tcp || die "iscsiroot requested but kernel/initrd does not support iscsi"
fi
modprobe -b -q qla4xxx
modprobe -b -q cxgb3i
modprobe -b -q cxgb4i
modprobe -b -q bnx2i
modprobe -b -q be2iscsi
if [ -n "$netroot" ] && [ "$root" != "/dev/root" ] && [ "$root" != "dhcp" ]; then
if ! getargbool 1 rd.neednet > /dev/null || ! getarg "ip="; then
initqueue --unique --onetime --settled /sbin/iscsiroot dummy "'$netroot'" "'$NEWROOT'"
fi
fi
if arg=$(getarg rd.iscsi.initiator -d iscsi_initiator=) && [ -n "$arg" ] && ! [ -f /run/initiatorname.iscsi ]; then
iscsi_initiator=$arg
echo "InitiatorName=$iscsi_initiator" > /run/initiatorname.iscsi
ln -fs /run/initiatorname.iscsi /dev/.initiatorname.iscsi
rm -f /etc/iscsi/initiatorname.iscsi
mkdir -p /etc/iscsi
ln -fs /run/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi
if [ -n "$DRACUT_SYSTEMD" ]; then
systemctl try-restart iscsid
# FIXME: iscsid is not yet ready, when the service is :-/
sleep 1
fi
fi
# If not given on the cmdline and initiator-name available via iBFT
if [ -z "$iscsi_initiator" ] && [ -f /sys/firmware/ibft/initiator/initiator-name ] && ! [ -f /tmp/iscsi_set_initiator ]; then
iscsi_initiator=$(while read -r line || [ -n "$line" ]; do echo "$line"; done < /sys/firmware/ibft/initiator/initiator-name)
if [ -n "$iscsi_initiator" ]; then
echo "InitiatorName=$iscsi_initiator" > /run/initiatorname.iscsi
rm -f /etc/iscsi/initiatorname.iscsi
mkdir -p /etc/iscsi
ln -fs /run/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi
: > /tmp/iscsi_set_initiator
if [ -n "$DRACUT_SYSTEMD" ]; then
systemctl try-restart iscsid
# FIXME: iscsid is not yet ready, when the service is :-/
sleep 1
fi
fi
fi
if [ -z "$netroot" ] || ! [ "${netroot%%:*}" = "iscsi" ]; then
return 1
fi
initqueue --unique --onetime --timeout /sbin/iscsiroot timeout "$netroot" "$NEWROOT"
for nroot in $(getargs netroot); do
[ "${nroot%%:*}" = "iscsi" ] || continue
type parse_iscsi_root > /dev/null 2>&1 || . /lib/net-lib.sh
parse_iscsi_root "$nroot" || return 1
netroot_enc=$(str_replace "$nroot" '/' '\2f')
echo "${DRACUT_SYSTEMD+systemctl is-active initrd-root-device.target || }[ -f '/tmp/iscsistarted-$netroot_enc' ]" > "$hookdir"/initqueue/finished/iscsi_started.sh
done
# Done, all good!
# shellcheck disable=SC2034
rootok=1
# Shut up init error check
[ -z "$root" ] && root="iscsi"
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