diff --git a/include/pika_server.h b/include/pika_server.h
index d6c450fc5d..b5e5ae29b8 100644
--- a/include/pika_server.h
+++ b/include/pika_server.h
@@ -298,7 +298,7 @@ class PikaServer : public pstd::noncopyable {
   pstd::Status GetDumpMeta(const std::string& db_name, const uint32_t slot_id, std::vector<std::string>* files,
                            std::string* snapshot_uuid);
   void DBSync(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id);
-  void TryDBSync(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id, int32_t top);
+  void DoBgSaveSlot(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id, int32_t top);
   void DbSyncSendFile(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id);
   std::string DbSyncTaskIndex(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id);
 
diff --git a/src/pika_repl_server_conn.cc b/src/pika_repl_server_conn.cc
index a5929f9444..94c0a140bc 100644
--- a/src/pika_repl_server_conn.cc
+++ b/src/pika_repl_server_conn.cc
@@ -309,6 +309,7 @@ void PikaReplServerConn::HandleDBSyncRequest(void* arg) {
   if (!master_slot) {
     LOG(WARNING) << "Sync Master Slot: " << db_name << ":" << slot_id << ", NotFound";
     prior_success = false;
+    response.set_code(InnerMessage::kError);
   }
   if (prior_success) {
     if (!master_slot->CheckSlaveNodeExist(node.ip(), node.port())) {
@@ -348,11 +349,13 @@ void PikaReplServerConn::HandleDBSyncRequest(void* arg) {
     }
   }
 
-  g_pika_server->TryDBSync(node.ip(), node.port() + kPortShiftRSync, db_name, slot_id,
+  g_pika_server->DoBgSaveSlot(node.ip(), node.port() + kPortShiftRSync, db_name, slot_id,
                            static_cast<int32_t>(slave_boffset.filenum()));
   // Change slave node's state to kSlaveDbSync so that the binlog will perserved.
   // See details in SyncMasterSlot::BinlogCloudPurge.
-  master_slot->ActivateSlaveDbSync(node.ip(), node.port());
+  if (master_slot) {
+    master_slot->ActivateSlaveDbSync(node.ip(), node.port());
+  }
 
   std::string reply_str;
   if (!response.SerializeToString(&reply_str) || (conn->WriteResp(reply_str) != 0)) {
diff --git a/src/pika_server.cc b/src/pika_server.cc
index 6fa5d4919e..574ed2e5bb 100644
--- a/src/pika_server.cc
+++ b/src/pika_server.cc
@@ -934,15 +934,15 @@ pstd::Status PikaServer::GetDumpMeta(const std::string& db_name, const uint32_t
   return pstd::Status::OK();
 }
 
-void PikaServer::TryDBSync(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id, int32_t top) {
+void PikaServer::DoBgSaveSlot(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id, int32_t top) {
   std::shared_ptr<Slot> slot = GetDBSlotById(db_name, slot_id);
   if (!slot) {
-    LOG(WARNING) << "can not find Slot whose id is " << slot_id << " in db " << db_name << ", TryDBSync Failed";
+    LOG(WARNING) << "can not find Slot whose id is " << slot_id << " in db " << db_name << ", DoBgSaveSlot Failed";
     return;
   }
   std::shared_ptr<SyncMasterSlot> sync_slot = g_pika_rm->GetSyncMasterSlotByName(SlotInfo(db_name, slot_id));
   if (!sync_slot) {
-    LOG(WARNING) << "can not find Slot whose id is " << slot_id << " in db " << db_name << ", TryDBSync Failed";
+    LOG(WARNING) << "can not find Slot whose id is " << slot_id << " in db " << db_name << ", DoBgSaveSlot Failed";
     return;
   }
   BgSaveInfo bgsave_info = slot->bgsave_info();
@@ -953,8 +953,6 @@ void PikaServer::TryDBSync(const std::string& ip, int port, const std::string& d
     // Need Bgsave first
     slot->BgSaveSlot();
   }
-  // TODO: temporarily disable rsync server
-  // DBSync(ip, port, db_name, slot_id);
 }
 
 void PikaServer::DbSyncSendFile(const std::string& ip, int port, const std::string& db_name, uint32_t slot_id) {