diff --git a/thin-provisioning/emitter.h b/thin-provisioning/emitter.h
index 58658a9..bb944da 100644
--- a/thin-provisioning/emitter.h
+++ b/thin-provisioning/emitter.h
@@ -49,6 +49,8 @@ namespace thin_provisioning {
 		virtual void begin_superblock(std::string const &uuid,
 					      uint64_t time,
 					      uint64_t trans_id,
+					      boost::optional<uint32_t> flags,
+					      boost::optional<uint32_t> version,
 					      uint32_t data_block_size,
 					      uint64_t nr_data_blocks,
 					      boost::optional<uint64_t> metadata_snap) = 0;
diff --git a/thin-provisioning/human_readable_format.cc b/thin-provisioning/human_readable_format.cc
index 3cfc188..6c53b3c 100644
--- a/thin-provisioning/human_readable_format.cc
+++ b/thin-provisioning/human_readable_format.cc
@@ -43,12 +43,16 @@ namespace {
 		void begin_superblock(string const &uuid,
 				      uint64_t time,
 				      uint64_t trans_id,
+				      boost::optional<uint32_t> flags,
+				      boost::optional<uint32_t> version,
 				      uint32_t data_block_size,
 				      uint64_t nr_data_blocks,
 				      boost::optional<uint64_t> metadata_snap) {
 			out_ << "begin superblock: \"" << uuid << "\""
 			     << ", " << time
 			     << ", " << trans_id
+			     << ", " << (flags ? *flags : 0)
+			     << ", " << (version ? *version : 1)
 			     << ", " << data_block_size
 			     << ", " << nr_data_blocks;
 			if (metadata_snap)
diff --git a/thin-provisioning/metadata_dumper.cc b/thin-provisioning/metadata_dumper.cc
index 0c0fbe4..5006fc0 100644
--- a/thin-provisioning/metadata_dumper.cc
+++ b/thin-provisioning/metadata_dumper.cc
@@ -228,6 +228,8 @@ thin_provisioning::metadata_dump(metadata::ptr md, emitter::ptr e, bool repair)
 
 	e->begin_superblock("", md->sb_.time_,
 			    md->sb_.trans_id_,
+			    md->sb_.flags_,
+			    md->sb_.version_,
 			    md->sb_.data_block_size_,
 			    nr_data_blocks,
 			    boost::optional<block_address>());
diff --git a/thin-provisioning/restore_emitter.cc b/thin-provisioning/restore_emitter.cc
index fd83f56..2fab704 100644
--- a/thin-provisioning/restore_emitter.cc
+++ b/thin-provisioning/restore_emitter.cc
@@ -44,6 +44,8 @@ namespace {
 		virtual void begin_superblock(std::string const &uuid,
 					      uint64_t time,
 					      uint64_t trans_id,
+					      boost::optional<uint32_t> flags,
+					      boost::optional<uint32_t> version,
 					      uint32_t data_block_size,
 					      uint64_t nr_data_blocks,
 					      boost::optional<uint64_t> metadata_snap) {
@@ -54,6 +56,8 @@ namespace {
 			memcpy(&sb.uuid_, uuid.c_str(), std::min(sizeof(sb.uuid_), uuid.length()));
 			sb.time_ = time;
 			sb.trans_id_ = trans_id;
+			sb.flags_ = flags ? *flags : 0;
+			sb.version_ = version ? *version : 1;
 			sb.data_block_size_ = data_block_size;
 			sb.metadata_snap_ = metadata_snap ? *metadata_snap : 0;
 			md_->data_sm_->extend(nr_data_blocks);
diff --git a/thin-provisioning/xml_format.cc b/thin-provisioning/xml_format.cc
index 333204f..efbfd3f 100644
--- a/thin-provisioning/xml_format.cc
+++ b/thin-provisioning/xml_format.cc
@@ -50,6 +50,8 @@ namespace {
 		void begin_superblock(string const &uuid,
 				      uint64_t time,
 				      uint64_t trans_id,
+				      boost::optional<uint32_t> flags,
+				      boost::optional<uint32_t> version,
 				      uint32_t data_block_size,
 				      uint64_t nr_data_blocks,
 				      boost::optional<uint64_t> metadata_snap) {
@@ -57,6 +59,8 @@ namespace {
 			out_ << "<superblock uuid=\"" << uuid << "\""
 			     << " time=\"" << time << "\""
 			     << " transaction=\"" << trans_id << "\""
+			     << " flags=\"" << (flags ? *flags : 0) << "\""
+			     << " version=\"" << (version ? *version : 1) << "\""
 			     << " data_block_size=\"" << data_block_size << "\""
 			     << " nr_data_blocks=\"" << nr_data_blocks;
 
@@ -140,6 +144,8 @@ namespace {
 		e->begin_superblock(get_attr<string>(attr, "uuid"),
 				    get_attr<uint64_t>(attr, "time"),
 				    get_attr<uint64_t>(attr, "transaction"),
+				    get_opt_attr<uint32_t>(attr, "flags"),
+				    get_opt_attr<uint32_t>(attr, "version"),
 				    get_attr<uint32_t>(attr, "data_block_size"),
 				    get_attr<uint64_t>(attr, "nr_data_blocks"),
 				    get_opt_attr<uint64_t>(attr, "metadata_snap"));