Fix read-only persistence mode with overlayfs

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

diff --git a/components/9990-overlay.sh b/components/9990-overlay.sh
index 9282276..d1b9cef 100755 (executable)
--- a/components/9990-overlay.sh
+++ b/components/9990-overlay.sh
@@ -117,6 +117,8 @@ setup_unionfs ()
                                log_begin_msg "Mounting \"${image}\" on \"${mpoint}\" via \"${backdev}\""
                                mount -t "${fstype}" -o ro,noatime "${backdev}" "${mpoint}" || panic "Can not mount ${backdev} (${image}) on ${mpoint}"
                                log_end_msg
+                       else
+                               log_warning_msg "Could not find image '${image}'. Most likely it is listed in a .module file, perhaps by mistake."
                        fi
                done
        else
@@ -272,7 +274,7 @@ setup_unionfs ()
                        panic "only one RO file system supported with exposedroot: ${rootfslist}"
                fi
 
-               mount --bind ${rootfs} ${rootmnt} || \
+               mount -o bind ${rootfs} ${rootmnt} || \
                        panic "bind mount of ${rootfs} failed"
 
                if [ -z "${SKIP_UNION_MOUNTS}" ]
@@ -355,8 +357,8 @@ setup_unionfs ()
                done
        fi
 
-        # ensure that a potentially stray tmpfs gets removed
-        # otherways, initramfs-tools is unable to remove /live
-        # and fails to boot
-        umount /live/overlay > /dev/null 2>&1 || true
+       # ensure that a potentially stray tmpfs gets removed
+       # otherways, initramfs-tools is unable to remove /live
+       # and fails to boot
+       umount /live/overlay > /dev/null 2>&1 || true
 }