X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=components%2F9990-misc-helpers.sh;h=c59e40e5523b7e1b02eb9d5c6be408b27b81b521;hb=822706beb66f72389dc5e9328b52f1a9c0da04fe;hp=fcd2b07c365e8d1f026f92833413ec136ca23ece;hpb=ec9bd07c900e13d606445518a87e0326902d5815;p=live-boot-grml.git

diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh
index fcd2b07..c59e40e 100755
--- a/components/9990-misc-helpers.sh
+++ b/components/9990-misc-helpers.sh
@@ -1292,15 +1292,17 @@ do_union ()
 			rw_opt="rw"
 			ro_opt="rr+wh"
 			noxino_opt="noxino"
-			;;
 
-		*)
-			rw_opt="rw"
-			ro_opt="ro"
+			unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
+			if [ -n "${unionro}" ]
+			then
+				for rofs in ${unionro}
+				do
+					unionmountopts="${unionmountopts}:${rofs}=${ro_opt}"
+				done
+			fi
 			;;
-	esac
 
-	case "${UNIONTYPE}" in
 		overlay)
 			# XXX: can multiple unionro be used? (overlay only handles two dirs, but perhaps they can be chained?)
 			# XXX: and can unionro be optional? i.e. can overlay skip lowerdir?
@@ -1312,21 +1314,18 @@ do_union ()
 				panic "overlay needs at least one lower filesystem (read-only branch)."
 			fi
 			unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}"
-			mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
-			;;
-
-		*)
-			unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
-			if [ -n "${unionro}" ]
-			then
-				for rofs in ${unionro}
-				do
-					unionmountopts="${unionmountopts}:${rofs}=${ro_opt}"
-				done
-			fi
+			# overlayfs requires:
+			# + a workdir to become mounted
+			# + workdir and upperdir to reside under the same mount
+			# + workdir and upperdir to be in separate directories
+			mkdir ${unionrw}/rw
+			mkdir ${unionrw}/work
+			unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}/rw,workdir=${unionrw}/work"
 			mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
 			;;
 	esac
+
+	mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
 }
 
 get_custom_mounts ()