MDEV-18438 Don't stream xtrabackup_info of extra-lsndir

extra/mariabackup/backup_copy.cc

@@ -1610,7 +1610,8 @@ bool backup_finish()
 		return(false);
 	}
 
-	if (!write_xtrabackup_info(mysql_connection, XTRABACKUP_INFO, opt_history != 0)) {
+	if (!write_xtrabackup_info(mysql_connection, XTRABACKUP_INFO,
+				    opt_history != 0, true)) {
 		return(false);
 	}
 

extra/mariabackup/backup_mysql.cc

@@ -1472,9 +1472,12 @@ PERCONA_SCHEMA.xtrabackup_history and writes a new history record to the
 table containing all the history info particular to the just completed
 backup. */
 bool
-write_xtrabackup_info(MYSQL *connection, const char * filename, bool history)
+write_xtrabackup_info(MYSQL *connection, const char * filename, bool history,
+                       bool stream)
 {
 
+	bool result = true;
+	FILE *fp = NULL;
 	char *uuid = NULL;
 	char *server_version = NULL;
 	char buf_start_time[100];
@@ -1500,7 +1503,8 @@ write_xtrabackup_info(MYSQL *connection, const char * filename, bool history)
 		|| xtrabackup_databases_exclude
 		);
 
-	backup_file_printf(filename,
+	char *buf = NULL;
+	int buf_len = asprintf(&buf,
 		"uuid = %s\n"
 		"name = %s\n"
 		"tool_name = %s\n"
@@ -1512,8 +1516,8 @@ write_xtrabackup_info(MYSQL *connection, const char * filename, bool history)
 		"end_time = %s\n"
 		"lock_time = %d\n"
 		"binlog_pos = %s\n"
-		"innodb_from_lsn = %llu\n"
-		"innodb_to_lsn = %llu\n"
+		"innodb_from_lsn = " LSN_PF "\n"
+		"innodb_to_lsn = " LSN_PF "\n"
 		"partial = %s\n"
 		"incremental = %s\n"
 		"format = %s\n"
@@ -1530,12 +1534,34 @@ write_xtrabackup_info(MYSQL *connection, const char * filename, bool history)
 		(int)history_lock_time, /* lock_time */
 		mysql_binlog_position ?
 			mysql_binlog_position : "", /* binlog_pos */
-		incremental_lsn, /* innodb_from_lsn */
-		metadata_to_lsn, /* innodb_to_lsn */
+		incremental_lsn,
+		/* innodb_from_lsn */
+		metadata_to_lsn,
+		/* innodb_to_lsn */
 		is_partial? "Y" : "N",
 		xtrabackup_incremental ? "Y" : "N", /* incremental */
 		xb_stream_name[xtrabackup_stream_fmt], /* format */
 		xtrabackup_compress ? "compressed" : "N"); /* compressed */
+	if (buf_len < 0) {
+		msg("Error: cannot generate xtrabackup_info");
+		result = false;
+		goto cleanup;
+	}
+
+	if (stream) {
+		backup_file_printf(filename, "%s", buf);
+	} else {
+		fp = fopen(filename, "w");
+		if (!fp) {
+			msg("Error: cannot open %s", filename);
+			result = false;
+			goto cleanup;
+		}
+		if (fwrite(buf, buf_len, 1, fp) < 1) {
+			result = false;
+			goto cleanup;
+		}
+	}
 
 	if (!history) {
 		goto cleanup;
@@ -1597,8 +1623,11 @@ cleanup:
 
 	free(uuid);
 	free(server_version);
+	free(buf);
+	if (fp)
+		fclose(fp);
 
-	return(true);
+	return(result);
 }
 
 extern const char *innodb_checksum_algorithm_names[];

extra/mariabackup/backup_mysql.h

@@ -68,7 +68,8 @@ bool
 write_binlog_info(MYSQL *connection);
 
 bool
-write_xtrabackup_info(MYSQL *connection, const char * filename, bool history);
+write_xtrabackup_info(MYSQL *connection, const char * filename, bool history,
+                       bool stream);
 
 bool
 write_backup_config_file();

extra/mariabackup/xtrabackup.cc

@@ -3984,7 +3984,7 @@ static bool xtrabackup_backup_low()
 		}
 		sprintf(filename, "%s/%s", xtrabackup_extra_lsndir,
 			XTRABACKUP_INFO);
-		if (!write_xtrabackup_info(mysql_connection, filename, false)) {
+		if (!write_xtrabackup_info(mysql_connection, filename, false, false)) {
 			msg("Error: failed to write info "
 			 "to '%s'.", filename);
 			return false;

mysql-test/suite/mariabackup/extra_lsndir_stream.result

@@ -0,0 +1,2 @@
+xtrabackup_checkpoints
+xtrabackup_info

mysql-test/suite/mariabackup/extra_lsndir_stream.test

@@ -0,0 +1,7 @@
+let $extra_lsndir=$MYSQLTEST_VARDIR/tmp/extra_lsndir;
+mkdir $extra_lsndir;
+--disable_result_log
+exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --backup --stream=xbstream --extra-lsndir=$extra_lsndir > /dev/null;
+--enable_result_log
+list_files $extra_lsndir;
+rmdir $extra_lsndir;

mysql-test/suite/mariabackup/mdev-18438.result

@@ -0,0 +1 @@
+stream.xb

mysql-test/suite/mariabackup/mdev-18438.test

@@ -0,0 +1,11 @@
+let $basedir=$MYSQLTEST_VARDIR/tmp/mdev-18438;
+mkdir $basedir;
+exec $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf --backup --extra-lsndir=$basedir/extra_lsndir --stream=xbstream > $basedir/stream.xb;
+mkdir $basedir/backup;
+rmdir $basedir/extra_lsndir;
+--disable_result_log
+exec $XBSTREAM -x -C $basedir/backup  < $basedir/stream.xb;
+--enable_result_log
+rmdir $basedir/backup;
+list_files $basedir;
+rmdir $basedir;