--- /dev/null
+commit 64aeb1209c42c4897113af20e24b0a4dc3519add
+Author: Evgeni Golov <evgeni@grml.org>
+Date: Mon Mar 11 09:17:58 2013 +0100
+
+ Fixing condition for setting rootfs_dest_backing.
+
+ The fix for the opt_link check in d5ed942 broke the code as it inverted the
+ meaning. Previously it ran the code iff opt_link was empty, as [ -n ] is
+ true. In the case opt_link was not empty, the code evaluated to [ -n foo],
+ which is invalid syntax and thus false. This, however, was almost the expected
+ behaviour, as rootfs_dest_backing is needed for opt_union and (in read-only
+ mode) for opt_link.
+
+diff --git a/scripts/boot/9990-misc-helpers.sh b/scripts/boot/9990-misc-helpers.sh
+index cb3940b..fb7c644 100755
+--- a/scripts/boot/9990-misc-helpers.sh
++++ b/scripts/boot/9990-misc-helpers.sh
+@@ -1482,7 +1482,7 @@ activate_custom_mounts ()
+ # ignore the loop below and set rootfs_dest_backing=$dest
+ local rootfs_dest_backing
+ rootfs_dest_backing=""
+- if [ -n "${opt_link}" ]
++ if [ -n "${opt_link}" ] || [ -n "${opt_union}" ]
+ then
+ for d in /live/rootfs/*
+ do