diff --git a/include/crucible/fs.h b/include/crucible/fs.h
index 3561681..9c843d8 100644
--- a/include/crucible/fs.h
+++ b/include/crucible/fs.h
@@ -206,6 +206,7 @@ namespace crucible {
 	ostream & operator<<(ostream &os, const btrfs_ioctl_search_key &key);
 	ostream & operator<<(ostream &os, const BtrfsIoctlSearchKey &key);
 
+	string btrfs_chunk_type_ntoa(uint64_t type);
 	string btrfs_search_type_ntoa(unsigned type);
 	string btrfs_search_objectid_ntoa(uint64_t objectid);
 	string btrfs_compress_type_ntoa(uint8_t type);
diff --git a/lib/fs.cc b/lib/fs.cc
index 8c8226c..dc20318 100644
--- a/lib/fs.cc
+++ b/lib/fs.cc
@@ -881,6 +881,26 @@ namespace crucible {
 		}
 	}
 
+	string
+	btrfs_chunk_type_ntoa(uint64_t type)
+	{
+		static const bits_ntoa_table table[] = {
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_DATA),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_METADATA),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_SYSTEM),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_DUP),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_RAID0),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_RAID1),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_RAID10),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_RAID1C3),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_RAID1C4),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_RAID5),
+			NTOA_TABLE_ENTRY_BITS(BTRFS_BLOCK_GROUP_RAID6),
+			NTOA_TABLE_ENTRY_END()
+		};
+		return bits_ntoa(type, table);
+	}
+
 	string
 	btrfs_search_type_ntoa(unsigned type)
 	{