--no-ancient-blocks

parity/cli/mod.rs

@@ -132,6 +132,7 @@ usage! {
 			or |c: &Config| otry!(c.network).reserved_peers.clone().map(Some),
 		flag_reserved_only: bool = false,
 			or |c: &Config| otry!(c.network).reserved_only.clone(),
+		flag_no_ancient_blocks: bool = false, or |_| None,
 
 		// -- API and Console Options
 		// RPC
@@ -533,6 +534,7 @@ mod tests {
 			flag_node_key: None,
 			flag_reserved_peers: Some("./path_to_file".into()),
 			flag_reserved_only: false,
+			flag_no_ancient_blocks: false,
 
 			// -- API and Console Options
 			// RPC

parity/cli/usage.txt

@@ -95,6 +95,8 @@ Networking Options:
                            all - connect to any IP address.
                            (default: {flag_allow_ips})
   --max-pending-peers NUM  Allow up to NUM pending connections. (default: {flag_max_pending_peers})
+  --no-ancient-blocks      Disable downloading old blocks after snapshot restoration
+                           or warp sync. (default: {flag_no_ancient_blocks})
 
 API and Console Options:
   --no-jsonrpc             Disable the JSON-RPC API server. (default: {flag_no_jsonrpc})

parity/configuration.rs

@@ -250,6 +250,7 @@ impl Configuration {
 				custom_bootnodes: self.args.flag_bootnodes.is_some(),
 				no_periodic_snapshot: self.args.flag_no_periodic_snapshot,
 				check_seal: !self.args.flag_no_seal_check,
+				download_old_blocks: !self.args.flag_no_ancient_blocks,
 			};
 			Cmd::Run(run_cmd)
 		};
@@ -871,6 +872,7 @@ mod tests {
 			fat_db: Default::default(),
 			no_periodic_snapshot: false,
 			check_seal: true,
+			download_old_blocks: true,
 		}));
 	}
 

parity/run.rs

@@ -91,6 +91,7 @@ pub struct RunCmd {
 	pub custom_bootnodes: bool,
 	pub no_periodic_snapshot: bool,
 	pub check_seal: bool,
+	pub download_old_blocks: bool,
 }
 
 pub fn open_ui(dapps_conf: &dapps::Configuration, signer_conf: &signer::Configuration) -> Result<(), String> {
@@ -202,6 +203,7 @@ pub fn execute(cmd: RunCmd, logger: Arc<RotatingLogger>) -> Result<(), String> {
 	}
 	sync_config.fork_block = spec.fork_block();
 	sync_config.warp_sync = cmd.warp_sync;
+	sync_config.download_old_blocks = cmd.download_old_blocks;
 
 	// prepare account provider
 	let account_provider = Arc::new(try!(prepare_account_provider(&cmd.dirs, cmd.acc_conf)));