1 files changed, 13 insertions, 0 deletions
diff --git a/utils.h b/utils.h
index 871cbd8c..12923de8 100644
--- a/utils.h
+++ b/utils.h
@@ -30,6 +30,19 @@
 		(BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF		\
 		| BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA)
 
+/*
+ * Avoid multi-device features (RAID56) and mixed block groups
+ */
+#define BTRFS_CONVERT_ALLOWED_FEATURES				\
+	(BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF			\
+	| BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL			\
+	| BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO			\
+	| BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2			\
+	| BTRFS_FEATURE_INCOMPAT_BIG_METADATA			\
+	| BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF			\
+	| BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA		\
+	| BTRFS_FEATURE_INCOMPAT_NO_HOLES)
+
 #define BTRFS_FEATURE_LIST_ALL		(1ULL << 63)
 
 #define BTRFS_SCAN_MOUNTED	(1ULL << 0)