Fix read-only persistence mode with overlayfs

[live-boot-grml.git] / components / 9990-misc-helpers.sh

diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh
index ee53b16..fba3d43 100755 (executable)
--- a/components/9990-misc-helpers.sh
+++ b/components/9990-misc-helpers.sh
@@ -1615,6 +1615,13 @@ activate_custom_mounts ()
                        mkdir -p ${cow_dir}
                        chown_ref "${source}" "${cow_dir}"
                        chmod_ref "${source}" "${cow_dir}"
+                       if [ "${UNIONTYPE}" = "overlay" ]
+                       then
+                               # When we use overlay we add the "/rw" postfix to our source when using it
+                               # as upper layer. Therefore we also have to add it here when using it as
+                               # the lower layer.
+                               source="${source}/rw"
+                       fi
                        do_union ${dest} ${cow_dir} ${source} ${rootfs_dest_backing}
                fi