X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=components%2F9990-misc-helpers.sh;h=a97615bb6ddc5f128eeafa0be2d10e8e121dc1f5;hb=6f465ddc145fb527215865ed042875d231d8dcfd;hp=995187314d7fe94e8ffe5dc0033122295f97baf9;hpb=6bc8a6645a6310e8089f5521b7c62b25925abe78;p=live-boot-grml.git

diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh
index 9951873..a97615b 100755
--- a/components/9990-misc-helpers.sh
+++ b/components/9990-misc-helpers.sh
@@ -420,13 +420,19 @@ is_supported_fs ()
 		return 1
 	fi
 
+	# get_fstype might report "unknown" or "swap", ignore it as no such kernel module exists
+	if [ "${fstype}" = "unknown" ] || [ "${fstype}" = "swap" ]
+	then
+		return 1
+	fi
+
 	# Try to look if it is already supported by the kernel
 	if grep -q ${fstype} /proc/filesystems
 	then
 		return 0
 	else
 		# Then try to add support for it the gentle way using the initramfs capabilities
-		modprobe ${fstype}
+		modprobe -q -b ${fstype}
 		if grep -q ${fstype} /proc/filesystems
 		then
 			return 0
@@ -1292,23 +1298,8 @@ do_union ()
 			rw_opt="rw"
 			ro_opt="rr+wh"
 			noxino_opt="noxino"
-			;;
-
-		unionfs-fuse)
-			rw_opt="RW"
-			ro_opt="RO"
-			;;
 
-		*)
-			rw_opt="rw"
-			ro_opt="ro"
-			;;
-	esac
-
-	case "${UNIONTYPE}" in
-		unionfs-fuse)
-			unionmountopts="-o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid"
-			unionmountopts="${unionmountopts} ${unionrw}=${rw_opt}"
+			unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
 			if [ -n "${unionro}" ]
 			then
 				for rofs in ${unionro}
@@ -1316,38 +1307,29 @@ do_union ()
 					unionmountopts="${unionmountopts}:${rofs}=${ro_opt}"
 				done
 			fi
-			( sysctl -w fs.file-max=391524 ; ulimit -HSn 16384
-			unionfs-fuse ${unionmountopts} "${unionmountpoint}" ) && \
-			( mkdir -p /run/sendsigs.omit.d
-			pidof unionfs-fuse >> /run/sendsigs.omit.d/unionfs-fuse || true )
 			;;
 
-		overlayfs)
-			# XXX: can multiple unionro be used? (overlayfs only handles two dirs, but perhaps they can be chained?)
-			# XXX: and can unionro be optional? i.e. can overlayfs skip lowerdir?
+		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?
 			if echo ${unionro} | grep -q " "
 			then
-				panic "Multiple lower filesystems are currently not supported with overlayfs (unionro = ${unionro})."
+				panic "Multiple lower filesystems are currently not supported with overlay (unionro = ${unionro})."
 			elif [ -z "${unionro}"	]
 			then
-				panic "Overlayfs needs at least one lower filesystem (read-only branch)."
+				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
-			mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
+			# 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"
 			;;
 	esac
+
+	mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
 }
 
 get_custom_mounts ()
@@ -1415,7 +1397,7 @@ get_custom_mounts ()
 					union|bind)
 						;;
 					*)
-						log_warning_msg "Skipping custom mount with unkown option: ${opt}"
+						log_warning_msg "Skipping custom mount with unknown option: ${opt}"
 						continue 2
 						;;
 				esac