Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 87 insertions, 0 deletions

diff --git a/ctdb/config/events/legacy/70.iscsi.script b/ctdb/config/events/legacy/70.iscsi.script
new file mode 100755
index 0000000..e74651d
--- /dev/null
+++ b/ctdb/config/events/legacy/70.iscsi.script
@@ -0,0 +1,87 @@
+#!/bin/sh
+
+# CTDB event script for TGTD based iSCSI
+
+[ -n "$CTDB_BASE" ] || \
+	CTDB_BASE=$(d=$(dirname "$0") && cd -P "$d" && dirname "$PWD")
+
+. "${CTDB_BASE}/functions"
+
+# service_name is used by various functions
+# shellcheck disable=SC2034
+service_name="iscsi"
+
+load_script_options
+
+[ -z "$CTDB_START_ISCSI_SCRIPTS" ] && {
+	echo "No iscsi start script directory found"
+	exit 0
+}
+
+case "$1" in
+ipreallocated)
+	all_ips=$($CTDB -X ip | tail -n +2)
+
+	# Block the iSCSI port.  Only block for the address families
+	# we have configured.  This copes with, for example, ip6tables
+	# being unavailable on an IPv4-only system.
+	have_ipv4=false
+	have_ipv6=false
+	# x is intentionally ignored
+	# shellcheck disable=SC2034
+	while IFS='|' read x ip pnn x ; do
+	    case "$ip" in
+		*:*) have_ipv6=true ;;
+		*)   have_ipv4=true ;;
+		esac
+	done <<EOF
+$all_ips
+EOF
+	if $have_ipv4 ; then
+	    iptables -I INPUT 1 -p tcp --dport 3260 -j DROP
+	fi
+	if $have_ipv6 ; then
+	    ip6tables -I INPUT 1 -p tcp --dport 3260 -j DROP
+	fi
+
+	# Stop iSCSI daemon
+	killall -9 tgtd >/dev/null 2>/dev/null
+
+	pnn=$(ctdb_get_pnn)
+	[ -n "$pnn" ] || die "Failed to get node pnn"
+
+	# Start iSCSI daemon
+	tgtd >/dev/null 2>&1
+
+	# Run a script for each currently hosted public IP address
+	ips=$(echo "$all_ips" | awk -F'|' -v pnn="$pnn" '$3 == pnn {print $2}')
+	for ip in $ips ; do
+	    script="${CTDB_START_ISCSI_SCRIPTS}/${ip}.sh"
+	    if [ -x "$script" ] ; then
+		echo "Starting iSCSI service for public address ${ip}"
+		"$script"
+	    fi
+	done
+
+	# Unblock iSCSI port.  These can be unconditional (compared to
+	# blocking above), since errors are redirected.
+	while iptables -D INPUT -p tcp --dport 3260 -j DROP >/dev/null 2>&1 ; do
+	    :
+	done
+	while ip6tables -D INPUT -p tcp --dport 3260 -j DROP >/dev/null 2>&1 ; do
+	    :
+	done
+
+	;;
+
+shutdown)
+	# Shutdown iSCSI daemon when ctdb goes down
+	killall -9 tgtd >/dev/null 2>&1
+	;;
+
+monitor)
+	ctdb_check_tcp_ports 3260 || exit $?
+	;;
+esac
+
+exit 0