diff -Naur drbd-utils-9.0.0.orig/scripts/global_common.conf drbd-utils-9.0.0/scripts/global_common.conf
--- drbd-utils-9.0.0.orig/scripts/global_common.conf	2017-10-16 17:02:55.715528259 +0800
+++ drbd-utils-9.0.0/scripts/global_common.conf	2017-10-16 17:07:49.755636558 +0800
@@ -47,10 +47,10 @@
 	}
 
 	disk {
-		# size on-io-error fencing disk-barrier disk-flushes
+		# on-io-error disk-barrier disk-flushes
 		# disk-drain md-flushes resync-rate resync-after al-extents
-                # c-plan-ahead c-delay-target c-fill-target c-max-rate
-                # c-min-rate disk-timeout
+		# c-plan-ahead c-delay-target c-fill-target c-max-rate
+		# c-min-rate disk-timeout
 	}
 
 	net {
@@ -60,6 +60,6 @@
 		# after-sb-1pri after-sb-2pri always-asbp rr-conflict
 		# ping-timeout data-integrity-alg tcp-cork on-congestion
 		# congestion-fill congestion-extents csums-alg verify-alg
-		# use-rle
+		# use-rle fencing
 	}
 }