X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=components%2F9990-misc-helpers.sh;h=2515ea1ea15988131e3aaa0f1e696966944be8a8;hb=e5904f5079fd4362c4dd63027075fce4b47c51c5;hp=4c8383dec75bd593e683fea104f46a3686151208;hpb=e74c8d150c05d266f87bf15b330999b19acec269;p=live-boot-grml.git

diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh
index 4c8383d..2515ea1 100755
--- a/components/9990-misc-helpers.sh
+++ b/components/9990-misc-helpers.sh
@@ -932,7 +932,17 @@ find_persistence_media ()
 	white_listed_devices="${2}"
 	ret=""
 
-	black_listed_devices="$(what_is_mounted_on /live/medium) $(what_is_mounted_on /live/findiso) $(what_is_mounted_on /live/fromiso)"
+	#
+	# The devices that are hosting the actual live rootfs should not be
+	# used for persistence storage since otherwise you might mount a
+	# parent directory on top of a sub-directory of the same filesystem
+	# in one union together.
+	#
+	black_listed_devices=""
+	for d in /live/rootfs/* /live/findiso /live/fromiso
+	do
+		black_listed_devices="${black_listed_devices} $(what_is_mounted_on d)"
+	done
 
 	for dev in $(storage_devices "${black_listed_devices}" "${white_listed_devices}")
 	do