Cleanup: Remove unnecessary InnoDB log writes

storage/innobase/handler/ha_innodb.cc

@@ -12729,7 +12729,6 @@ ha_innobase::create(
 	bool		file_per_table,
 	trx_t*		trx)
 {
-	int		error;
 	char		norm_name[FN_REFLEN];	/* {database}/{tablename} */
 	char		remote_path[FN_REFLEN];	/* Absolute path of table */
 
@@ -12746,14 +12745,19 @@ ha_innobase::create(
 				     remote_path,
 				     file_per_table, trx);
 
-	if ((error = info.initialize())
-	    || (error = info.prepare_create_table(name, !trx))) {
+	{
+		int error = info.initialize();
+		if (!error) {
+			error = info.prepare_create_table(name, !trx);
+		}
+		if (error) {
 			if (trx) {
 				trx_rollback_for_mysql(trx);
 				row_mysql_unlock_data_dictionary(trx);
 			}
 			DBUG_RETURN(error);
 		}
+	}
 
 	const bool own_trx = !trx;
 
@@ -12767,7 +12771,7 @@ ha_innobase::create(
 		DBUG_ASSERT(trx_state_eq(trx, TRX_STATE_NOT_STARTED));
 	}
 
-	if ((error = info.create_table(own_trx))) {
+	if (int error = info.create_table(own_trx)) {
 		/* Drop the being-created table before rollback,
 		so that rollback can possibly rename back a table
 		that could have been renamed before the failed creation. */
@@ -12792,16 +12796,9 @@ ha_innobase::create(
 		trx->free();
 	}
 
-	/* Flush the log to reduce probability that the .frm files and
-	the InnoDB data dictionary get out-of-sync if the user runs
-	with innodb_flush_log_at_trx_commit = 0 */
-	log_buffer_flush_to_disk();
-
 	ut_ad(!srv_read_only_mode);
 
-	error = info.create_table_update_dict();
-
-	DBUG_RETURN(error);
+	DBUG_RETURN(info.create_table_update_dict());
 }
 
 /** Create a new table to an InnoDB database.
@@ -13132,11 +13129,6 @@ inline int ha_innobase::delete_table(const char* name, enum_sql_command sqlcom)
 	}
 
 	ut_ad(!srv_read_only_mode);
-	/* Flush the log to reduce probability that the .frm files and
-	the InnoDB data dictionary get out-of-sync if the user runs
-	with innodb_flush_log_at_trx_commit = 0 */
-
-	log_buffer_flush_to_disk();
 
 	innobase_commit_low(trx);
 
@@ -13232,12 +13224,6 @@ innobase_drop_database(
 
 	my_free(namebuf);
 
-	/* Flush the log to reduce probability that the .frm files and
-	the InnoDB data dictionary get out-of-sync if the user runs
-	with innodb_flush_log_at_trx_commit = 0 */
-
-	log_buffer_flush_to_disk();
-
 	innobase_commit_low(trx);
 
 	trx->free();
@@ -13330,12 +13316,6 @@ inline dberr_t innobase_rename_table(trx_t *trx, const char *from,
 		row_mysql_unlock_data_dictionary(trx);
 	}
 
-	/* Flush the log to reduce probability that the .frm
-	files and the InnoDB data dictionary get out-of-sync
-	if the user runs with innodb_flush_log_at_trx_commit = 0 */
-
-	log_buffer_flush_to_disk();
-
 	DBUG_RETURN(error);
 }
 

storage/innobase/log/log0log.cc

@@ -1133,10 +1133,8 @@ ATTRIBUTE_COLD void logs_empty_and_mark_files_at_shutdown()
 
 	if (srv_fast_shutdown == 2 || !srv_was_started) {
 		if (!srv_read_only_mode && srv_was_started) {
-			ib::info() << "MySQL has requested a very fast"
-				" shutdown without flushing the InnoDB buffer"
-				" pool to data files. At the next mysqld"
-				" startup InnoDB will do a crash recovery!";
+			ib::info() << "Executing innodb_fast_shutdown=2."
+				" Next startup will execute crash recovery!";
 
 			/* In this fastest shutdown we do not flush the
 			buffer pool:
@@ -1144,10 +1142,7 @@ ATTRIBUTE_COLD void logs_empty_and_mark_files_at_shutdown()
 			it is essentially a 'crash' of the InnoDB server.
 			Make sure that the log is all flushed to disk, so
 			that we can recover all committed transactions in
-			a crash recovery. We must not write the lsn stamps
-			to the data files, since at a startup InnoDB deduces
-			from the stamps if the previous shutdown was clean. */
-
+			a crash recovery. */
 			log_buffer_flush_to_disk();
 		}
 

storage/innobase/srv/srv0start.cc

@@ -1509,11 +1509,7 @@ dberr_t srv_start(bool create_new_db)
 				fil_system.sys_space->size_in_header
 					= uint32_t(size);
 				mtr.commit();
-				/* Immediately write the log record about
-				increased tablespace size to disk, so that it
-				is durable even if mysqld would crash
-				quickly */
-				log_buffer_flush_to_disk();
+				log_write_up_to(mtr.commit_lsn(), true);
 			}
 		}