disable_recordfail_lvm.patch

--- a/etc/grub.d/00_header	2014-07-18 18:06:43.409469512 +0200
+++ b/etc/grub.d/00_header	2014-07-18 18:02:34.733561337 +0200
@@ -101,23 +101,43 @@ function savedefault {
 }
 EOF
 
+boot_part_writeable() {
+    for abstraction in "$(grub-probe --target=abstraction "${grubdir}")";
+    do
+        case "$abstraction" in
+            diskfilter|lvm)
+                return 1
+                ;;
+        esac
+    done
+
+    case "$(grub-probe --target=fs "${grubdir}")" in
+        btrfs|cpiofs|newc|odc|romfs|squash4|tarfs|zfs)
+            return 1
+            ;;
+    esac
+
+    return 0
+}
+
 if [ "$quick_boot" = 1 ]; then
     cat <<EOF
 function recordfail {
   set recordfail=1
 EOF
-    FS="$(grub-probe --target=fs "${grubdir}")"
-    case "$FS" in
-      btrfs | cpiofs | newc | odc | romfs | squash4 | tarfs | zfs)
-	cat <<EOF
-  # GRUB lacks write support for $FS, so recordfail support is disabled.
+    if boot_part_writeable; then
+        cat <<EOF
+  if [ -n "\${have_grubenv}" ]; then
+    if [ -z "\${boot_once}" ]; then
+      save_env recordfail
+    fi
+  fi
 EOF
-	;;
-      *)
-	cat <<EOF
-  if [ -n "\${have_grubenv}" ]; then if [ -z "\${boot_once}" ]; then save_env recordfail; fi; fi
+    else
+        cat <<EOF
+  # GRUB lacks write support on the boot partition, so recordfail support is disabled.
 EOF
-    esac
+    fi
     cat <<EOF
 }
 EOF