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308 lines
11 KiB
308 lines
11 KiB
#!/bin/sh |
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# |
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# This implementation is incomplete: Discovery mode is not implemented and |
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# the argument handling doesn't follow currently agreed formats. This is mainly |
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# because rfc4173 does not say anything about iscsi_initiator but open-iscsi's |
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# iscsistart needs this. |
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# |
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type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh |
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type parse_iscsi_root > /dev/null 2>&1 || . /lib/net-lib.sh |
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type write_fs_tab > /dev/null 2>&1 || . /lib/fs-lib.sh |
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PATH=/usr/sbin:/usr/bin:/sbin:/bin |
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# Huh? Empty $1? |
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[ -z "$1" ] && exit 1 |
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# Huh? Empty $2? |
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[ -z "$2" ] && exit 1 |
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# Huh? Empty $3? This isn't really necessary, since NEWROOT isn't |
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# used here. But let's be consistent |
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[ -z "$3" ] && exit 1 |
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# root is in the form root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname> |
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netif="$1" |
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iroot="$2" |
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# If it's not iscsi we don't continue |
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[ "${iroot%%:*}" = "iscsi" ] || exit 1 |
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iroot=${iroot#iscsi} |
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iroot=${iroot#:} |
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# XXX modprobe crc32c should go in the cmdline parser, but I haven't yet |
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# figured out a way how to check whether this is built-in or not |
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modprobe crc32c 2> /dev/null |
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# start iscsiuio if needed |
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if [ -z "${DRACUT_SYSTEMD}" ] \ |
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&& ([ -e /sys/module/bnx2i ] || [ -e /sys/module/qedi ]) \ |
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&& ! [ -e /tmp/iscsiuio-started ]; then |
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iscsiuio |
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> /tmp/iscsiuio-started |
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fi |
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handle_firmware() { |
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local ifaces retry |
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# Depending on the 'ql4xdisablesysfsboot' qla4xxx |
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# will be autostarting sessions without presenting |
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# them via the firmware interface. |
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# In these cases 'iscsiadm -m fw' will fail, but |
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# the iSCSI sessions will still be present. |
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if ! iscsiadm -m fw; then |
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warn "iscsiadm: Could not get list of targets from firmware." |
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else |
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ifaces=$( |
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set -- /sys/firmware/ibft/ethernet* |
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echo $# |
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) |
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retry=$(cat /tmp/session-retry) |
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if [ $retry -lt $ifaces ]; then |
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retry=$((retry + 1)) |
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echo $retry > /tmp/session-retry |
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return 1 |
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else |
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rm /tmp/session-retry |
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fi |
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if ! iscsiadm -m fw -l; then |
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warn "iscsiadm: Log-in to iscsi target failed" |
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else |
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need_shutdown |
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fi |
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fi |
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[ -d /sys/class/iscsi_session ] || return 1 |
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echo 'started' > "/tmp/iscsistarted-iscsi:" |
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echo 'started' > "/tmp/iscsistarted-firmware" |
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return 0 |
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} |
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handle_netroot() { |
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local iscsi_initiator iscsi_target_name iscsi_target_ip iscsi_target_port |
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local iscsi_target_group iscsi_protocol iscsirw iscsi_lun |
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local iscsi_username iscsi_password |
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local iscsi_in_username iscsi_in_password |
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local iscsi_iface_name iscsi_netdev_name |
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local iscsi_param param |
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local p found |
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local login_retry_max_seen= |
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# override conf settings by command line options |
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arg=$(getarg rd.iscsi.initiator -d iscsi_initiator=) |
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[ -n "$arg" ] && iscsi_initiator=$arg |
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arg=$(getarg rd.iscsi.target.group -d iscsi_target_group=) |
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[ -n "$arg" ] && iscsi_target_group=$arg |
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arg=$(getarg rd.iscsi.username -d iscsi_username=) |
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[ -n "$arg" ] && iscsi_username=$arg |
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arg=$(getarg rd.iscsi.password -d iscsi_password) |
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[ -n "$arg" ] && iscsi_password=$arg |
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arg=$(getarg rd.iscsi.in.username -d iscsi_in_username=) |
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[ -n "$arg" ] && iscsi_in_username=$arg |
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arg=$(getarg rd.iscsi.in.password -d iscsi_in_password=) |
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[ -n "$arg" ] && iscsi_in_password=$arg |
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for p in $(getargs rd.iscsi.param -d iscsi_param); do |
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[ "${p%=*}" = node.session.initial_login_retry_max ] \ |
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&& login_retry_max_seen=yes |
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iscsi_param="$iscsi_param $p" |
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done |
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# this sets iscsi_target_name and possibly overwrites most |
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# parameters read from the command line above |
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parse_iscsi_root "$1" || return 1 |
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# Bail out early, if there is no route to the destination |
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if is_ip "$iscsi_target_ip" && [ "$netif" != "timeout" ] && ! all_ifaces_setup && getargbool 1 rd.iscsi.testroute; then |
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ip route get "$iscsi_target_ip" > /dev/null 2>&1 || return 0 |
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fi |
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#limit iscsistart login retries |
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if [ "$login_retry_max_seen" != yes ]; then |
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retries=$(getargnum 3 0 10000 rd.iscsi.login_retry_max) |
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if [ $retries -gt 0 ]; then |
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iscsi_param="${iscsi_param% } node.session.initial_login_retry_max=$retries" |
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fi |
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fi |
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# XXX is this needed? |
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getarg ro && iscsirw=ro |
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getarg rw && iscsirw=rw |
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fsopts=${fsopts:+$fsopts,}${iscsirw} |
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if [ -z "$iscsi_initiator" ] && [ -f /sys/firmware/ibft/initiator/initiator-name ] && ! [ -f /tmp/iscsi_set_initiator ]; then |
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iscsi_initiator=$(while read line || [ -n "$line" ]; do echo $line; done < /sys/firmware/ibft/initiator/initiator-name) |
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echo "InitiatorName=$iscsi_initiator" > /run/initiatorname.iscsi |
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rm -f /etc/iscsi/initiatorname.iscsi |
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mkdir -p /etc/iscsi |
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ln -fs /run/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi |
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> /tmp/iscsi_set_initiator |
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if [ -n "$DRACUT_SYSTEMD" ]; then |
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systemctl try-restart iscsid |
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# FIXME: iscsid is not yet ready, when the service is :-/ |
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sleep 1 |
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fi |
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fi |
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if [ -z "$iscsi_initiator" ]; then |
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[ -f /run/initiatorname.iscsi ] && . /run/initiatorname.iscsi |
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[ -f /etc/initiatorname.iscsi ] && . /etc/initiatorname.iscsi |
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[ -f /etc/iscsi/initiatorname.iscsi ] && . /etc/iscsi/initiatorname.iscsi |
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iscsi_initiator=$InitiatorName |
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fi |
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if [ -z "$iscsi_initiator" ]; then |
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iscsi_initiator=$(iscsi-iname) |
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echo "InitiatorName=$iscsi_initiator" > /run/initiatorname.iscsi |
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rm -f /etc/iscsi/initiatorname.iscsi |
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mkdir -p /etc/iscsi |
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ln -fs /run/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi |
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> /tmp/iscsi_set_initiator |
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if [ -n "$DRACUT_SYSTEMD" ]; then |
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systemctl try-restart iscsid |
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# FIXME: iscsid is not yet ready, when the service is :-/ |
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sleep 1 |
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fi |
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fi |
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if [ -z "$iscsi_target_port" ]; then |
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iscsi_target_port=3260 |
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fi |
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if [ -z "$iscsi_target_group" ]; then |
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iscsi_target_group=1 |
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fi |
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if [ -z "$iscsi_lun" ]; then |
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iscsi_lun=0 |
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fi |
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echo "InitiatorName=$iscsi_initiator" > /run/initiatorname.iscsi |
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ln -fs /run/initiatorname.iscsi /dev/.initiatorname.iscsi |
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if ! [ -e /etc/iscsi/initiatorname.iscsi ]; then |
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mkdir -p /etc/iscsi |
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ln -fs /run/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi |
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if [ -n "$DRACUT_SYSTEMD" ]; then |
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systemctl try-restart iscsid |
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# FIXME: iscsid is not yet ready, when the service is :-/ |
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sleep 1 |
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fi |
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fi |
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if [ -z "$DRACUT_SYSTEMD" ]; then |
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iscsid |
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sleep 2 |
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fi |
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# FIXME $iscsi_protocol?? |
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if [ "$root" = "dhcp" ] || [ "$netroot" = "dhcp" ]; then |
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# if root is not specified try to mount the whole iSCSI LUN |
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printf 'SYMLINK=="disk/by-path/*-iscsi-*-%s", SYMLINK+="root"\n' "$iscsi_lun" >> /etc/udev/rules.d/99-iscsi-root.rules |
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udevadm control --reload |
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write_fs_tab /dev/root |
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wait_for_dev -n /dev/root |
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# install mount script |
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[ -z "$DRACUT_SYSTEMD" ] \ |
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&& echo "iscsi_lun=$iscsi_lun . /bin/mount-lun.sh " > $hookdir/mount/01-$$-iscsi.sh |
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fi |
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if strglobin $iscsi_target_ip '*:*:*' && ! strglobin $iscsi_target_ip '['; then |
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iscsi_target_ip="[$iscsi_target_ip]" |
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fi |
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targets=$(iscsiadm -m discovery -t st -p $iscsi_target_ip:${iscsi_target_port:+$iscsi_target_port} | sed 's/^.*iqn/iqn/') |
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[ -z "$targets" ] && echo "Target discovery to $iscsi_target_ip:${iscsi_target_port:+$iscsi_target_port} failed with status $?" && exit 1 |
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found= |
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for target in $targets; do |
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if [ "$target" = "$iscsi_target_name" ]; then |
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if [ -n "$iscsi_iface_name" ]; then |
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iscsiadm -m iface -I $iscsi_iface_name --op=new |
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EXTRA=" ${iscsi_netdev_name:+--name=iface.net_ifacename --value=$iscsi_netdev_name} " |
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EXTRA="$EXTRA ${iscsi_initiator:+--name=iface.initiatorname --value=$iscsi_initiator} " |
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fi |
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[ -n "$iscsi_param" ] && for param in $iscsi_param; do EXTRA="$EXTRA --name=${param%=*} --value=${param#*=}"; done |
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CMD="iscsiadm -m node -T $target \ |
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${iscsi_iface_name:+-I $iscsi_iface_name} \ |
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-p $iscsi_target_ip${iscsi_target_port:+:$iscsi_target_port}" |
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__op="--op=update \ |
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--name=node.startup --value=onboot \ |
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${iscsi_username:+ --name=node.session.auth.username --value=$iscsi_username} \ |
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${iscsi_password:+ --name=node.session.auth.password --value=$iscsi_password} \ |
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${iscsi_in_username:+--name=node.session.auth.username_in --value=$iscsi_in_username} \ |
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${iscsi_in_password:+--name=node.session.auth.password_in --value=$iscsi_in_password} \ |
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$EXTRA \ |
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$NULL" |
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$CMD $__op |
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if [ "$netif" != "timeout" ]; then |
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$CMD --login |
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fi |
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found=yes |
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break |
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fi |
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done |
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if [ "$netif" = "timeout" ]; then |
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iscsiadm -m node -L onboot || : |
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elif [ "$found" != yes ]; then |
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warn "iSCSI target \"$iscsi_target_name\" not found on portal $iscsi_target_ip:$iscsi_target_port" |
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return 1 |
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fi |
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> $hookdir/initqueue/work |
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netroot_enc=$(str_replace "$1" '/' '\2f') |
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echo 'started' > "/tmp/iscsistarted-iscsi:${netroot_enc}" |
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return 0 |
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} |
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ret=0 |
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if [ "$netif" != "timeout" ] && getargbool 0 rd.iscsi.waitnet; then |
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all_ifaces_setup || exit 0 |
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fi |
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if [ "$netif" = "timeout" ] && all_ifaces_setup; then |
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# s.th. went wrong and the timeout script hits |
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# restart |
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systemctl restart iscsid |
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# damn iscsid is not ready after unit says it's ready |
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sleep 2 |
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fi |
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if getargbool 0 rd.iscsi.firmware -d -y iscsi_firmware; then |
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if [ "$netif" = "timeout" ] || [ "$netif" = "online" ] || [ "$netif" = "dummy" ]; then |
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[ -f /tmp/session-retry ] || echo 1 > /tmp/session-retry |
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handle_firmware |
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ret=$? |
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fi |
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fi |
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if ! [ "$netif" = "online" ]; then |
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# loop over all netroot parameter |
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if nroot=$(getarg netroot) && [ "$nroot" != "dhcp" ]; then |
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for nroot in $(getargs netroot); do |
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[ "${nroot%%:*}" = "iscsi" ] || continue |
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nroot="${nroot##iscsi:}" |
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if [ -n "$nroot" ]; then |
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handle_netroot "$nroot" |
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ret=$(($ret + $?)) |
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fi |
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done |
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else |
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if [ -n "$iroot" ]; then |
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handle_netroot "$iroot" |
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ret=$? |
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fi |
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fi |
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fi |
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need_shutdown |
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# now we have a root filesystem somewhere in /dev/sd* |
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# let the normal block handler handle root= |
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exit $ret
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