diff options
Diffstat (limited to 'modules.d/95iscsi/parse-iscsiroot.sh')
| -rwxr-xr-x | modules.d/95iscsi/parse-iscsiroot.sh | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/modules.d/95iscsi/parse-iscsiroot.sh b/modules.d/95iscsi/parse-iscsiroot.sh new file mode 100755 index 0000000..7574711 --- /dev/null +++ b/modules.d/95iscsi/parse-iscsiroot.sh @@ -0,0 +1,156 @@ +#!/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 -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" |