Use dynamic switch directly from "server_need_restart" for better control of when to do it.

Remove #!force-restart and #!fresh-datadir

mysql-test/mysql-test-run.pl

@@ -2066,21 +2066,15 @@ sub run_testcase_check_skip_test($)
   return 0;
 }
 
+
 sub dynamic_binlog_format_switch {
-  my ($tinfo)= @_;
-  # Dynamically switch binlog format started MySQL servers
-  foreach my $mysqld ( mysqlds() )
-  {
-    # Skip servers that are restarted between each test
-    next if $mysqld->option('#!force-restart');
+  my ($tinfo, $mysqld)= @_;
 
   my $sql= "include/set_binlog_format_".$tinfo->{binlog_format_switch}.".sql";
   my $args;
   mtr_init_args(\$args);
   mtr_add_arg($args, "--defaults-file=%s", $path_config_file);
   mtr_add_arg($args, "--defaults-group-suffix=%s", $mysqld->after('mysqld'));
-    mtr_verbose("Dynamically switching binlog format to:",
-		$tinfo->{binlog_format_switch});
   my $res= My::SafeProcess->run
     (
      name          => "switch binlog format ".$mysqld->name(),
@@ -2093,7 +2087,6 @@ sub dynamic_binlog_format_switch {
   {
     mtr_error("Failed to switch binlog format");
   }
-  }
 }
 
 sub do_before_run_mysqltest($)
@@ -2287,11 +2280,6 @@ sub run_testcase ($) {
 
   do_before_run_mysqltest($tinfo);
 
-  if (defined $tinfo->{binlog_format_switch} )
-  {
-    dynamic_binlog_format_switch($tinfo)
-  }
-
   if ( $opt_check_testcases )
   {
     run_check_testcase_all($tinfo, "before")
@@ -2779,11 +2767,6 @@ sub server_need_restart {
     return 0;
   }
 
-  if ( $server->option('#!force-restart') ) {
-    mtr_verbose("Restart: forced in configuration");
-    return 1;
-  }
-
   if ( $tinfo->{'force_restart'} ) {
     mtr_verbose("Restart: forced in .opt file");
     return 1;
@@ -2820,6 +2803,10 @@ sub server_need_restart {
     }
   }
 
+  my $is_mysqld=  grep ($server eq $_, mysqlds());
+  if ($is_mysqld)
+  {
+
     # Check that running process was started with same options
     # as the current test requires
     my $extra_opt= get_extra_opt($server, $tinfo);
@@ -2827,6 +2814,8 @@ sub server_need_restart {
     if (defined $started_opts and $extra_opt and
 	! mtr_same_opts($started_opts, $extra_opt) )
     {
+      # TODO Use a list  to find all options that can be set dynamically
+
       # Check if diff is binlog format only
       # and the next test has $binlog_format_switch set
       my @diff_opts= mtr_diff_opts($started_opts, $extra_opt);
@@ -2837,16 +2826,17 @@ sub server_need_restart {
       {
 	mtr_verbose("Using dynamic switch of binlog format from ",
 		    $diff_opts[0],"to", $diff_opts[1]);
+	dynamic_binlog_format_switch($tinfo, $server);
       }
       else
       {
-
 	mtr_verbose("Restart: running with different options '" .
 		    join(" ", @{$extra_opt}) . "' != '" .
 		    join(" ", @{$server->{'started_opts'}}) . "'" );
 	return 1;
       }
     }
+  }
 
   # Default, no restart
   return 0;
@@ -2985,12 +2975,6 @@ sub start_servers($) {
     # Don't delete anything if starting dirty
     if (!$opt_start_dirty)
     {
-      # Remove old datadir before starting process
-      if ($mysqld->option('#!fresh-datadir') and -d $datadir) {
-	mtr_debug("Removing old datadir: '$datadir'");
-	rmdir($datadir);
-      }
-
       my @options= ('log-bin', 'relay-log');
 
       foreach my $option_name ( @options )  {

mysql-test/suite/rpl/rpl_1slave_base.cnf

@@ -16,12 +16,6 @@ log-bin=                 master-bin
 # starting the mysqld
 #!use-slave-opt
 
-# Force restart between each test case
-#!force-restart
-
-# Always install a fresh datadir before starting process
-#!fresh-datadir
-
 log-bin=                    slave-bin
 relay-log=                  slave-relay-bin