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Direktori : /usr/lib/dracut/modules.d/95iscsi/ |
Current File : //usr/lib/dracut/modules.d/95iscsi/module-setup.sh |
#!/bin/bash # called by dracut check() { local _rootdev # If our prerequisites are not met, fail anyways. require_binaries iscsi-iname iscsiadm iscsid || return 1 # If hostonly was requested, fail the check if we are not actually # booting from root. is_iscsi() { local _dev=$1 [[ -L "/sys/dev/block/$_dev" ]] || return cd "$(readlink -f "/sys/dev/block/$_dev")" until [[ -d sys || -d iscsi_session ]]; do cd .. done [[ -d iscsi_session ]] } [[ $hostonly ]] || [[ $mount_needs ]] && { pushd . >/dev/null for_each_host_dev_and_slaves is_iscsi || return 255 popd >/dev/null } return 0 } 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 } 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 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=$1 local scsi_path iscsi_lun session c d conn host flash local iscsi_session iscsi_address iscsi_port iscsi_targetname iscsi_tpgt scsi_path=${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 "$iscsi_address" ] && return local_address=$(ip -o route get to $iscsi_address | sed -n 's/.*src \([0-9a-f.:]*\).*/\1/p') ifname=$(ip -o route get to $iscsi_address | sed -n 's/.*dev \([^ ]*\).*/\1/p') #follow ifcfg settings for boot protocol bootproto=$(sed -n "/BOOTPROTO/s/BOOTPROTO='\([[:alpha:]]*6\?\)4\?'/\1/p" /etc/sysconfig/network/ifcfg-$ifname) if [ $bootproto ]; then printf 'ip=%s:%s ' ${ifname} ${bootproto} else printf 'ip=%s:static ' ${ifname} fi if [ -e /sys/class/net/$ifname/address ] ; then ifmac=$(cat /sys/class/net/$ifname/address) printf 'ifname=%s:%s ' ${ifname} ${ifmac} fi if [ -n "$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 $iscsi_dev } for_each_host_dev_and_slaves_all is_softiscsi || return 255 return 0 } # called by dracut depends() { echo network rootfs-block } # called by dracut installkernel() { local _arch=$(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() { 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 $(/usr/bin/find /etc/iscsi) 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 cleanup 90 "$moddir/cleanup-iscsi.sh" inst "$moddir/iscsiroot.sh" "/sbin/iscsiroot" 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 }