diff -Nru partman-auto-134ubuntu1.1/debian/changelog partman-auto-134ubuntu1.2/debian/changelog
--- partman-auto-134ubuntu1.1/debian/changelog	2016-09-06 11:57:44.000000000 -0600
+++ partman-auto-134ubuntu1.2/debian/changelog	2018-02-16 12:19:09.000000000 -0700
@@ -1,3 +1,14 @@
+partman-auto (134ubuntu1.2) UNRELEASED; urgency=medium
+
+  * lib/recipe.sh: For recipes that define the minimum swap partition
+    as a factor of memory size, cap the min at 2G. Modern servers often
+    have 10s of GB of memory, and it's unreasonable to steal that much
+    disk space by default on systems that are unlikely to hibernate.
+    It can even lead to install failures as memory sizes approach disk
+    size. (LP: #1351267)
+
+ -- dann frazier <dann.frazier@canonical.com>  Fri, 16 Feb 2018 12:19:09 -0700
+
 partman-auto (134ubuntu1.1) xenial; urgency=medium
 
   * lib/auto-shared.sh: list Software RAID devices on NVMe disks. Thanks to
diff -Nru partman-auto-134ubuntu1.1/lib/recipes.sh partman-auto-134ubuntu1.2/lib/recipes.sh
--- partman-auto-134ubuntu1.1/lib/recipes.sh	2016-09-06 11:56:23.000000000 -0600
+++ partman-auto-134ubuntu1.2/lib/recipes.sh	2018-02-16 12:14:55.000000000 -0700
@@ -86,6 +86,11 @@
 				ram_percent="${1#*+}"
 				ram_percent="${ram_percent%?}"
 				min=$((${1%%+*} + $ram * $ram_percent / 100))
+				if [ "$4" = "linux-swap" ] && [ $min -gt 2000 ]; then
+					# Constrain min swap on large mem systems.
+					# See LP: #1351267.
+					min=2000
+				fi
 			elif expr "$1" : '[0-9][0-9]*%$' >/dev/null; then
 				min=$(($ram * ${1%?} / 100))
 			else # error