From c426dc773fe654aed309375e20e398e9299ca34e Mon Sep 17 00:00:00 2001
From: Thomas Blume <Thomas.Blume@suse.com>
Date: Mon, 19 Oct 2015 09:14:53 +0200
Subject: Replace iscsistart with iscsiadm
References: FATE#319024

iscsistart allows for a single connection only, and offers no means
or terminating or re-establishing another one.
So replace iscsistart with iscsiadm to allow several connection for
multipath booting and also to ease maintenance in case of error.

Signed-off-by: Thomas Blume <thomas.blume@suse.com>
---
 modules.d/95iscsi/iscsiroot.sh       | 48 ++++++++++++++++++++++++------------
 modules.d/95iscsi/module-setup.sh    | 19 ++++++++++++--
 modules.d/95iscsi/parse-iscsiroot.sh |  2 +-
 3 files changed, 50 insertions(+), 19 deletions(-)

Index: dracut-044/modules.d/95iscsi/iscsiroot.sh
===================================================================
--- dracut-044.orig/modules.d/95iscsi/iscsiroot.sh	2016-04-18 17:43:51.198589298 +0200
+++ dracut-044/modules.d/95iscsi/iscsiroot.sh	2016-04-18 17:53:11.962323970 +0200
@@ -43,17 +43,13 @@ fi
 
 handle_firmware()
 {
-    if ! iscsistart -f; then
-        warn "iscistart: Could not get list of targets from firmware."
+    if ! iscsiadm -m fw; then
+        warn "iscsiadm: Could not get list of targets from firmware."
         return 1
     fi
 
-    for p in $(getargs rd.iscsi.param -d iscsi_param); do
-	iscsi_param="$iscsi_param --param $p"
-    done
-
-    if ! iscsistart -b $iscsi_param; then
-        warn "'iscsistart -b $iscsi_param' failed with return code $?"
+    if ! iscsiadm -m fw -l; then
+        warn "iscsiadm: Log-in to iscsi target failed"
     fi
 
     echo 'started' > "/tmp/iscsistarted-iscsi:"
@@ -77,7 +73,7 @@ handle_netroot()
     # override conf settings by command line options
     arg=$(getarg rd.iscsi.initiator -d iscsi_initiator=)
     [ -n "$arg" ] && iscsi_initiator=$arg
-    arg=$(getarg rd.iscsi.target.name -d iscsi_target_name=)
+    arg=$(getargs rd.iscsi.target.name -d iscsi_target_name=)
     [ -n "$arg" ] && iscsi_target_name=$arg
     arg=$(getarg rd.iscsi.target.ip -d iscsi_target_ip)
     [ -n "$arg" ] && iscsi_target_ip=$arg
@@ -94,7 +90,7 @@ handle_netroot()
     arg=$(getarg rd.iscsi.in.password -d iscsi_in_password=)
     [ -n "$arg" ] && iscsi_in_password=$arg
     for p in $(getargs rd.iscsi.param -d iscsi_param); do
-	iscsi_param="$iscsi_param --param $p"
+	iscsi_param="$iscsi_param $p"
     done
 
     parse_iscsi_root "$1" || return 1
@@ -182,45 +178,37 @@ handle_netroot()
             echo "iscsi_lun=$iscsi_lun . /bin/mount-lun.sh " > $hookdir/mount/01-$$-iscsi.sh
     fi
 
-    if [ -n "$DRACUT_SYSTEMD" ] && command -v systemd-run >/dev/null 2>&1; then
-        netroot_enc=$(systemd-escape "iscsistart_${1}")
-        status=$(systemctl is-active "$netroot_enc" 2>/dev/null)
-        is_active=$?
-        if [ $is_active -ne 0 ]; then
-            if [ "$status" != "activating" ] && ! systemctl is-failed "$netroot_enc" >/dev/null 2>&1; then
-                systemd-run --no-block --service-type=oneshot --remain-after-exit --quiet \
-                            --description="Login iSCSI Target $iscsi_target_name" \
-                            --unit="$netroot_enc" -- \
-                            $(command -v iscsistart) \
-                            -i "$iscsi_initiator" -t "$iscsi_target_name"        \
-                            -g "$iscsi_target_group" -a "$iscsi_target_ip"      \
-                            -p "$iscsi_target_port" \
-                            ${iscsi_username:+-u "$iscsi_username"} \
-                            ${iscsi_password:+-w "$iscsi_password"} \
-                            ${iscsi_in_username:+-U "$iscsi_in_username"} \
-                            ${iscsi_in_password:+-W "$iscsi_in_password"} \
-	                    ${iscsi_iface_name:+--param "iface.iscsi_ifacename=$iscsi_iface_name"} \
-	                    ${iscsi_netdev_name:+--param "iface.net_ifacename=$iscsi_netdev_name"} \
-                            ${iscsi_param} >/dev/null 2>&1 \
-	            && { > $hookdir/initqueue/work ; }
+    ### ToDo: Upstream calls systemd-run - Shall we, do we have to port this?
+
+    if iscsiadm -m node; then
+        targets=$(iscsiadm -m node | sed 's/^.*iqn/iqn/')
+    else
+        targets=$(iscsiadm -m discovery -t st -p $iscsi_target_ip:${iscsi_target_port:+$iscsi_target_port} | sed 's/^.*iqn/iqn/')
+        [ -z "$targets" ] && echo "Target discovery to $iscsi_target_ip:${iscsi_target_port:+$iscsi_target_port} failed with status $?" && exit 1
+    fi
+
+    for target in $iscsi_target_name; do
+        if [[ "$targets" =~ "$target" ]]; then
+            if [ -n "$iscsi_iface_name" ]; then
+                $(iscsiadm -m iface -I $iscsi_iface_name --op=new)
+                [ -n "$iscsi_initiator" ] && $(iscsiadm -m iface -I $iscsi_iface_name --op=update --name=iface.initiatorname --value=$iscsi_initiator)
+                [ -n "$iscsi_netdev_name" ] && $(iscsiadm -m iface -I $iscsi_iface_name --op=update --name=iface.net_ifacename --value=$iscsi_netdev_name)
+                COMMAND="iscsiadm -m node -T $target -p $iscsi_target_ip${iscsi_target_port:+:$iscsi_target_port} -I $iscsi_iface_name --op=update"
             else
-                systemctl --no-block restart "$netroot_enc" >/dev/null 2>&1 \
-	            && { > $hookdir/initqueue/work ; }
+                COMMAND="iscsiadm -m node -T $target -p $iscsi_target_ip${iscsi_target_port:+:$iscsi_target_port} --op=update"
             fi
+            $($COMMAND --name=node.startup --value=onboot)
+            [ -n "$iscsi_username" ] && $($COMMAND --name=node.session.auth.username --value=$iscsi_username)
+            [ -n "$iscsi_password" ] && $($COMMAND --name=node.session.auth.password --value=$iscsi_password)
+            [ -n "$iscsi_in_username" ] && $($COMMAND --name=node.session.auth.username_in --value=$iscsi_in_username)
+            [ -n "$iscsi_in_password" ] && $($COMMAND --name=node.session.auth.password_in --value=$iscsi_in_password)
+            [ -n "$iscsi_param" ] && $($COMMAND --name=${iscsi_param%=*} --value=${iscsi_param#*=}
         fi
-    else
-        iscsistart -i "$iscsi_initiator" -t "$iscsi_target_name"        \
-                   -g "$iscsi_target_group" -a "$iscsi_target_ip"      \
-                   -p "$iscsi_target_port" \
-                   ${iscsi_username:+-u "$iscsi_username"} \
-                   ${iscsi_password:+-w "$iscsi_password"} \
-                   ${iscsi_in_username:+-U "$iscsi_in_username"} \
-                   ${iscsi_in_password:+-W "$iscsi_in_password"} \
-	           ${iscsi_iface_name:+--param "iface.iscsi_ifacename=$iscsi_iface_name"} \
-	           ${iscsi_netdev_name:+--param "iface.net_ifacename=$iscsi_netdev_name"} \
-                   ${iscsi_param} \
-	    && { > $hookdir/initqueue/work ; }
-    fi
+    done
+
+    iscsiadm -m node -L onboot || :
+    > $hookdir/initqueue/work
+
     netroot_enc=$(str_replace "$1" '/' '\2f')
     echo 'started' > "/tmp/iscsistarted-iscsi:${netroot_enc}"
     return 0
Index: dracut-044/modules.d/95iscsi/module-setup.sh
===================================================================
--- dracut-044.orig/modules.d/95iscsi/module-setup.sh	2016-04-18 17:43:51.198589298 +0200
+++ dracut-044/modules.d/95iscsi/module-setup.sh	2016-04-18 17:53:11.962323970 +0200
@@ -4,7 +4,7 @@
 check() {
     local _rootdev
     # If our prerequisites are not met, fail anyways.
-    require_binaries iscsistart hostname iscsi-iname || return 1
+    require_binaries hostname iscsi-iname iscsiadm iscsid || return 1
 
     # If hostonly was requested, fail the check if we are not actually
     # booting from root.
@@ -211,9 +211,22 @@ cmdline() {
 
 # called by dracut
 install() {
-    inst_multiple umount iscsistart hostname iscsi-iname
     inst_multiple -o iscsiuio
     inst_libdir_file 'libgcc_s.so*'
+    inst_multiple umount hostname iscsi-iname iscsiadm iscsid
+
+    ln -sf $systemdsystemunitdir/iscsid.socket $systemdsystemunitdir/sockets.target.wants/iscsid.socket
+    ln -sf $systemdsystemunitdir/iscsiuio.socket $systemdsystemunitdir/sockets.target.wants/iscsiuio.socket
+
+    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
+
+    [[ -d /etc/iscsi ]] && inst_dir $(/usr/bin/find /etc/iscsi)
 
     # Detect iBFT and perform mandatory steps
     if [[ $hostonly_cmdline == "yes" ]] ; then
@@ -221,6 +234,8 @@ install() {
         [[ $_iscsiconf ]] && printf "%s\n" "$_iscsiconf" >> "${initdir}/etc/cmdline.d/95iscsi.conf"
     fi
 
+    echo 'rd.neednet=1' >> "${initdir}/etc/cmdline.d/95iscsi.conf"
+
     inst_hook cmdline 90 "$moddir/parse-iscsiroot.sh"
     inst_hook cleanup 90 "$moddir/cleanup-iscsi.sh"
     inst "$moddir/iscsiroot.sh" "/sbin/iscsiroot"