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EDIT :: parse-iscsiroot.sh

#!/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 --all -b -q qla4xxx cxgb3i cxgb4i bnx2i 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 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' ]" > $hookdir/initqueue/finished/iscsi_started.sh done # Done, all good! rootok=1 # Shut up init error check [ -z "$root" ] && root="iscsi"

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