diff -Nru drbd-utils-8.9.10/debian/changelog drbd-utils-8.9.10/debian/changelog
--- drbd-utils-8.9.10/debian/changelog	2017-05-12 08:05:39.000000000 -0400
+++ drbd-utils-8.9.10/debian/changelog	2018-05-25 11:17:50.000000000 -0400
@@ -1,3 +1,10 @@
+drbd-utils (8.9.10-2ubuntu1) cosmic; urgency=medium
+
+  * Fix creation of drbd symlinks with newer udev.
+    (LP: #1673255)
+
+ -- Dan Streetman <ddstreet@canonical.com>  Fri, 25 May 2018 11:17:50 -0400
+
 drbd-utils (8.9.10-2) unstable; urgency=medium
 
   * Fix the service enable/disable logic (broken since 8.9.8-1, closes:
diff -Nru drbd-utils-8.9.10/debian/patches/fix-nonsense-symlinks-due-to-udev-change-of-strin.patch drbd-utils-8.9.10/debian/patches/fix-nonsense-symlinks-due-to-udev-change-of-strin.patch
--- drbd-utils-8.9.10/debian/patches/fix-nonsense-symlinks-due-to-udev-change-of-strin.patch	1969-12-31 19:00:00.000000000 -0500
+++ drbd-utils-8.9.10/debian/patches/fix-nonsense-symlinks-due-to-udev-change-of-strin.patch	2018-05-25 11:17:50.000000000 -0400
@@ -0,0 +1,61 @@
+From: Lars Ellenberg <lars.ellenberg@linbit.com>
+Subject: [PATCH] v9: fix nonsense symlinks due to udev change of
+ string_escape=none -> replace
+Bug-Debian: https://bugs.debian.org/900065
+Bug-Ubuntu: https://launchpad.net/bugs/1673255
+Origin: upstream, https://github.com/LINBIT/drbd-utils/commit/05c0797248af6f4e3b5b04545fe068dba41e3d81
+--- a/scripts/drbd.rules.in
++++ b/scripts/drbd.rules.in
+@@ -6,7 +6,12 @@
+ IMPORT{program}="@sbindir@/drbdadm sh-udev minor-%m"
+ 
+ # Use symlink from the environment if available
+-ENV{SYMLINK}!="", SYMLINK="$env{SYMLINK}", GOTO="have_symlink"
++# some udev version thought it was a good idea to change a long established
++# default of string_escape=none to string_escape=replace :-/
++# therefore, recent enough drbdadm will no longer export space separated lists.
++ENV{SYMLINK_BY_DISK}!="", SYMLINK+="$env{SYMLINK_BY_DISK}"
++ENV{SYMLINK_BY_RES}!="", SYMLINK+="$env{SYMLINK_BY_RES}", GOTO="have_symlink"
++ENV{SYMLINK}!="", OPTIONS+="string_escape=none", SYMLINK="$env{SYMLINK}", GOTO="have_symlink"
+ 
+ # Legacy rules for older DRBD 8.3 & 8.4 when drbdadm sh-udev did not yet export SYMLINK
+ ENV{DISK}!="", SYMLINK+="drbd/by-disk/$env{DISK}"
+--- a/user/v9/drbdadm_main.c
++++ b/user/v9/drbdadm_main.c
+@@ -840,18 +840,31 @@
+ 	else
+ 		printf("DEVICE=drbd%u\n", vol->device_minor);
+ 
++	/* in case older udev rules are still in place,
++	 * but do not yet have the work-around for the
++	 * udev default change of "string_escape=none" -> "replace",
++	 * populate plain "SYMLINK" with just the "by-res" one. */
+ 	printf("SYMLINK=");
+ 	if (vol->implicit)
+-		printf("drbd/by-res/%s", res->name);
++		printf("drbd/by-res/%s\n", res->name);
+ 	else
+-		printf("drbd/by-res/%s/%u", res->name, vol->vnr);
++		printf("drbd/by-res/%s/%u\n", res->name, vol->vnr);
++
++	/* repeat, with _BY_RES */
++	printf("SYMLINK_BY_RES=");
++	if (vol->implicit)
++		printf("drbd/by-res/%s\n", res->name);
++	else
++		printf("drbd/by-res/%s/%u\n", res->name, vol->vnr);
++
++	/* and add the _BY_DISK one explicitly */
+ 	if (vol->disk) {
++		printf("SYMLINK_BY_DISK=");
+ 		if (!strncmp(vol->disk, "/dev/", 5))
+-			printf(" drbd/by-disk/%s", vol->disk + 5);
++			printf("drbd/by-disk/%s\n", vol->disk + 5);
+ 		else
+-			printf(" drbd/by-disk/%s", vol->disk);
++			printf("drbd/by-disk/%s\n", vol->disk);
+ 	}
+-	printf("\n");
+ 
+ 	return 0;
+ }
diff -Nru drbd-utils-8.9.10/debian/patches/series drbd-utils-8.9.10/debian/patches/series
--- drbd-utils-8.9.10/debian/patches/series	2017-05-12 07:43:00.000000000 -0400
+++ drbd-utils-8.9.10/debian/patches/series	2018-05-25 11:17:50.000000000 -0400
@@ -5,3 +5,4 @@
 initscript-remove-path.patch
 reproducible-build
 initscript-add-start-runlevels.patch
+fix-nonsense-symlinks-due-to-udev-change-of-strin.patch