#!/bin/bash
-# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
-# ex: ts=8 sw=4 sts=4 et filetype=sh
+# called by dracut
check() {
local _rootdev
# If our prerequisites are not met, fail anyways.
- type -P iscsistart hostname iscsi-iname >/dev/null || return 1
+ require_binaries iscsi-iname iscsiadm iscsid || return 1
# If hostonly was requested, fail the check if we are not actually
# booting from root.
- . $dracutfunctions
+ [[ $hostonly ]] || [[ $mount_needs ]] && {
+ pushd . >/dev/null
+ for_each_host_dev_and_slaves block_is_iscsi
+ local _is_iscsi=$?
+ popd >/dev/null
+ [[ $_is_iscsi == 0 ]] || return 255
+ }
+ return 0
+}
- [[ $debug ]] && set -x
+get_ibft_mod() {
+ local ibft_mac=$1
+ local iface_mac iface_mod
+ # Return the iSCSI offload module for a given MAC address
+ for iface_desc in $(iscsiadm -m iface | cut -f 2 -d ' '); do
+ iface_mod=${iface_desc%%,*}
+ iface_mac=${iface_desc#*,}
+ iface_mac=${iface_mac%%,*}
+ if [ "$ibft_mac" = "$iface_mac" ] ; then
+ echo $iface_mod
+ return 0
+ fi
+ done
+}
- is_iscsi() (
- [[ -L /sys/dev/block/$1 ]] || return
- cd "$(readlink -f /sys/dev/block/$1)"
- until [[ -d sys || -d iscsi_session ]]; do
- cd ..
- done
- [[ -d iscsi_session ]]
- )
+install_ibft() {
+ # When iBFT / iscsi_boot is detected:
+ # - Use 'ip=ibft' to set up iBFT network interface
+ # Note: bnx2i is using a different MAC address of iSCSI offloading
+ # so the 'ip=ibft' parameter must not be set
+ # - specify firmware booting cmdline parameter
- [[ $hostonly ]] || [[ $mount_needs ]] && {
- _rootdev=$(find_root_block_device)
- if [[ $_rootdev ]]; then
- # root lives on a block device, so we can be more precise about
- # hostonly checking
- check_block_and_slaves is_iscsi "$_rootdev" || return 1
- else
- return 1
+ for d in /sys/firmware/* ; do
+ if [ -d ${d}/ethernet0 ] ; then
+ read ibft_mac < ${d}/ethernet0/mac
+ ibft_mod=$(get_ibft_mod $ibft_mac)
+ fi
+ if [ -z "$ibft_mod" ] && [ -d ${d}/ethernet1 ] ; then
+ read ibft_mac < ${d}/ethernet1/mac
+ ibft_mod=$(get_ibft_mod $ibft_mac)
+ fi
+ if [ -d ${d}/initiator ] ; then
+ if [ ${d##*/} = "ibft" ] && [ "$ibft_mod" != "bnx2i" ] ; then
+ echo -n "rd.iscsi.ibft=1 "
+ fi
+ echo -n "rd.iscsi.firmware=1 "
+ fi
+ done
+}
+
+install_iscsiroot() {
+ local devpath=$1
+ local scsi_path iscsi_lun session c d conn host flash
+ local iscsi_session iscsi_address iscsi_port iscsi_targetname iscsi_tpgt
+ local bootproto
+
+ scsi_path=${devpath%%/block*}
+ [ "$scsi_path" = "$devpath" ] && return 1
+ iscsi_lun=${scsi_path##*:}
+ [ "$iscsi_lun" = "$scsi_path" ] && return 1
+ session=${devpath%%/target*}
+ [ "$session" = "$devpath" ] && return 1
+ iscsi_session=${session##*/}
+ [ "$iscsi_session" = "$session" ] && return 1
+ host=${session%%/session*}
+ [ "$host" = "$session" ] && return 1
+ iscsi_host=${host##*/}
+
+ for flash in ${host}/flashnode_sess-* ; do
+ [ -f "$flash" ] || continue
+ [ ! -e "$flash/is_boot_target" ] && continue
+ is_boot=$(cat $flash/is_boot_target)
+ if [ $is_boot -eq 1 ] ; then
+ # qla4xxx flashnode session; skip iBFT discovery
+ iscsi_initiator=$(cat /sys/class/iscsi_host/${iscsi_host}/initiatorname)
+ echo "rd.iscsi.initiator=${iscsi_initiator}"
+ return;
+ fi
+ done
+
+ for d in ${session}/* ; do
+ case $d in
+ *connection*)
+ c=${d##*/}
+ conn=${d}/iscsi_connection/${c}
+ if [ -d ${conn} ] ; then
+ iscsi_address=$(cat ${conn}/persistent_address)
+ iscsi_port=$(cat ${conn}/persistent_port)
+ fi
+ ;;
+ *session)
+ if [ -d ${d}/${iscsi_session} ] ; then
+ iscsi_initiator=$(cat ${d}/${iscsi_session}/initiatorname)
+ iscsi_targetname=$(cat ${d}/${iscsi_session}/targetname)
+ fi
+ ;;
+ esac
+ done
+
+ [ -z "$iscsi_address" ] && return
+ ip_params_for_remote_addr "$iscsi_address"
+
+ if [ -n "$iscsi_address" -a -n "$iscsi_targetname" ] ; then
+ if [ -n "$iscsi_port" -a "$iscsi_port" -eq 3260 ] ; then
+ iscsi_port=
+ fi
+ if [ -n "$iscsi_lun" -a "$iscsi_lun" -eq 0 ] ; then
+ iscsi_lun=
fi
+ # In IPv6 case rd.iscsi.initatior= must pass address in [] brackets
+ case "$iscsi_address" in
+ *:*)
+ iscsi_address="[$iscsi_address]"
+ ;;
+ esac
+ # Must be two separate lines, so that "sort | uniq" commands later
+ # can sort out rd.iscsi.initiator= duplicates
+ echo "rd.iscsi.initiator=${iscsi_initiator}"
+ echo "netroot=iscsi:${iscsi_address}::${iscsi_port}:${iscsi_lun}:${iscsi_targetname}"
+ echo "rd.neednet=1"
+ fi
+ return 0
+}
+
+
+install_softiscsi() {
+ [ -d /sys/firmware/ibft ] && return 0
+
+ is_softiscsi() {
+ local _dev=$1
+ local iscsi_dev
+
+ [[ -L "/sys/dev/block/$_dev" ]] || return
+ iscsi_dev=$(cd -P /sys/dev/block/$_dev; echo $PWD)
+ install_iscsiroot $iscsi_dev
}
+
+ for_each_host_dev_and_slaves_all is_softiscsi || return 255
return 0
}
+# called by dracut
depends() {
echo network rootfs-block
}
+# called by dracut
installkernel() {
- instmods iscsi_tcp iscsi_ibft crc32c bnx2i iscsi_boot_sysfs qla4xxx cxgb3i cxgb4i be2iscsi
- iscsi_module_filter() {
- local _iscsifuncs='iscsi_register_transport'
- local _f
- while read _f; do case "$_f" in
- *.ko) [[ $(< $_f) =~ $_iscsifuncs ]] && echo "$_f" ;;
- *.ko.gz) [[ $(gzip -dc <$_f) =~ $_iscsifuncs ]] && echo "$_f" ;;
- *.ko.xz) [[ $(xz -dc <$_f) =~ $_iscsifuncs ]] && echo "$_f" ;;
- esac
- done
- }
- { find_kernel_modules_by_path drivers/scsi; find_kernel_modules_by_path drivers/s390/scsi; } \
- | iscsi_module_filter | instmods
+ local _arch=${DRACUT_ARCH:-$(uname -m)}
+ local _funcs='iscsi_register_transport'
+
+ instmods bnx2i qla4xxx cxgb3i cxgb4i be2iscsi qedi
+ hostonly="" instmods iscsi_tcp iscsi_ibft crc32c iscsi_boot_sysfs
+
+ if [ "$_arch" = "s390" -o "$_arch" = "s390x" ]; then
+ _s390drivers="=drivers/s390/scsi"
+ fi
+
+ dracut_instmods -o -s ${_funcs} =drivers/scsi ${_s390drivers:+"$_s390drivers"}
+}
+
+# called by dracut
+cmdline() {
+ local _iscsiconf=$(install_ibft)
+ {
+ if [ "$_iscsiconf" ] ; then
+ echo ${_iscsiconf}
+ else
+ install_softiscsi
+ fi
+ } | sort | uniq
}
+# called by dracut
install() {
- dracut_install umount
- dracut_install -o iscsiuio
- inst iscsistart
- inst hostname
- inst iscsi-iname
+ inst_multiple -o iscsiuio
+ inst_libdir_file 'libgcc_s.so*'
+ inst_multiple umount iscsi-iname iscsiadm iscsid
+
+ inst_multiple -o \
+ $systemdsystemunitdir/iscsid.socket \
+ $systemdsystemunitdir/iscsid.service \
+ $systemdsystemunitdir/iscsiuio.service \
+ $systemdsystemunitdir/iscsiuio.socket \
+ $systemdsystemunitdir/sockets.target.wants/iscsid.socket \
+ $systemdsystemunitdir/sockets.target.wants/iscsiuio.socket
+
+ if [[ $hostonly ]]; then
+ inst_dir /etc/iscsi
+ inst_multiple $(find /etc/iscsi -type f)
+ else
+ inst_simple /etc/iscsi/iscsid.conf
+ fi
+
+ # Detect iBFT and perform mandatory steps
+ if [[ $hostonly_cmdline == "yes" ]] ; then
+ local _iscsiconf=$(cmdline)
+ [[ $_iscsiconf ]] && printf "%s\n" "$_iscsiconf" >> "${initdir}/etc/cmdline.d/95iscsi.conf"
+ fi
+
inst_hook cmdline 90 "$moddir/parse-iscsiroot.sh"
- inst_hook pre-pivot-cleanup 90 "$moddir/cleanup-iscsi.sh"
+ inst_hook cleanup 90 "$moddir/cleanup-iscsi.sh"
inst "$moddir/iscsiroot.sh" "/sbin/iscsiroot"
- inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
+
+ if ! dracut_module_included "systemd"; then
+ inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
+ else
+ inst_multiple -o \
+ $systemdsystemunitdir/iscsi.service \
+ $systemdsystemunitdir/iscsid.service \
+ $systemdsystemunitdir/iscsid.socket \
+ $systemdsystemunitdir/iscsiuio.service \
+ $systemdsystemunitdir/iscsiuio.socket \
+ iscsiadm iscsid
+
+ for i in \
+ iscsid.socket \
+ iscsiuio.socket \
+ ; do
+ $SYSTEMCTL -q --root "$initdir" enable "$i"
+ done
+
+ for i in \
+ iscsid.service \
+ iscsiuio.service \
+ ; do
+ $SYSTEMCTL -q --root "$initdir" add-wants basic.target "$i"
+ done
+
+ # Make sure iscsid is started after dracut-cmdline and ready for the initqueue
+ mkdir -p "${initdir}/$systemdsystemunitdir/iscsid.service.d"
+ (
+ echo "[Unit]"
+ echo "After=dracut-cmdline.service"
+ echo "Before=dracut-initqueue.service"
+ ) > "${initdir}/$systemdsystemunitdir/iscsid.service.d/dracut.conf"
+
+ # The iscsi deamon does not need to wait for any storage inside initrd
+ mkdir -p "${initdir}/$systemdsystemunitdir/iscsid.socket.d"
+ (
+ echo "[Unit]"
+ echo "DefaultDependencies=no"
+ echo "Conflicts=shutdown.target"
+ echo "Before=shutdown.target sockets.target"
+ ) > "${initdir}/$systemdsystemunitdir/iscsid.socket.d/dracut.conf"
+ mkdir -p "${initdir}/$systemdsystemunitdir/iscsiuio.socket.d"
+ (
+ echo "[Unit]"
+ echo "DefaultDependencies=no"
+ echo "Conflicts=shutdown.target"
+ echo "Before=shutdown.target sockets.target"
+ ) > "${initdir}/$systemdsystemunitdir/iscsiuio.socket.d/dracut.conf"
+
+ fi
+ inst_dir /var/lib/iscsi
+ dracut_need_initqueue
}
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