Print info about slaves found. Print --progress when waiting for new table to replicate to slaves.

bin/pt-online-schema-change

@@ -8031,8 +8031,22 @@ sub main {
          },
       );
       PTDEBUG && _d(scalar @$slaves, 'slaves found');
+      if ( scalar @$slaves ) {
+         print "Found " . scalar(@$slaves) . " slaves:\n";
+         foreach my $cxn ( @$slaves ) {
+            print "  " . $cxn->name() . "\n";
+         }
+      }
+      elsif ( ($o->get('recursion-method') || '') ne 'none') {
+         print "No slaves found.  See --recursion-method if host "
+               . $cxn->name() . " has slaves.\n";
+      }
+      else {
+         print "Ignoring all slaves because --recursion-method=none "
+            . "was specified\n";
+      }
 
-      if ( $o->get('check-slave-lag') ) {
+      if ( my $dsn = $o->get('check-slave-lag') ) {
          PTDEBUG && _d('Will use --check-slave-lag to check for slave lag');
          my $cxn = $make_cxn->(
             dsn_string => $o->get('check-slave-lag'),
@@ -8044,6 +8058,16 @@ sub main {
          PTDEBUG && _d('Will check slave lag on all slaves');
          $slave_lag_cxns = $slaves;
       }
+      if ( $slave_lag_cxns && scalar @$slave_lag_cxns ) {
+         print "Will check slave lag on:\n";
+         foreach my $cxn ( @$slave_lag_cxns ) {
+            print "  " . $cxn->name() . "\n";
+         }
+      }
+      else {
+         print "Not checking slave lag because no slaves were found "
+               . "and --check-slave-lag was not specified.\n";
+      }
 
       # #####################################################################
       # Check for replication filters.
@@ -8513,14 +8537,36 @@ sub main {
       }
    };
 
-   for my $slave (@$slaves) {
+   if ( $slaves && scalar @$slaves ) {
-      PTDEBUG && _d('Waiting until', $slave->name(),
+      foreach my $slave (@$slaves) {
-                     'replicates the table');
+         my ($pr, $pr_first_report);
-      sleep 0.5 while ! $tp->check_table(
+         if ( $o->get('progress') ) {
-                           dbh => $slave->dbh(),
+            $pr = new Progress(
-                           db  => $new_tbl->{db},
+               jobsize => scalar @$slaves,
-                           tbl => $new_tbl->{tbl}
+               spec    => $o->get('progress'),
-                      );
+               name    => "Waiting for " . $slave->name(),
+            );
+            $pr_first_report = sub {
+               print "Waiting forever for new table $new_tbl->{name} to replicate "
+                  . "to " . $slave->name() . "...\n";
+            };
+         }
+         $pr->start() if $pr;
+         my $has_table = 0;
+         while ( !$has_table ) {
+            $has_table = $tp->check_table(
+               dbh => $slave->dbh(),
+               db  => $new_tbl->{db},
+               tbl => $new_tbl->{tbl}
+            );
+            last if $has_table;
+            $pr->update(
+               sub { return 0; },
+               first_report => $pr_first_report,
+            ) if $pr;
+            sleep 1;
+         }
+      }
    }
 
    # --plugin hook

t/pt-online-schema-change/ansi_quotes.t

@@ -61,7 +61,7 @@ is(
    $exit_status,
    0,
    "--dry-run exit 0 (bug 1058285)"
-);
+) or diag($output);
 
 unlike(
    $output,

t/pt-online-schema-change/basics.t

@@ -13,6 +13,7 @@ use Test::More;
 use Time::HiRes qw(sleep);
 
 $ENV{PTTEST_FAKE_TS} = 1;
+$ENV{PERCONA_TOOLKIT_TEST_USE_DSN_NAMES} = 1;
 
 use PerconaTest;
 use Sandbox;

t/pt-online-schema-change/charset.t

@@ -56,10 +56,10 @@ $sb->load_file('master', "$sample/basic_no_fks.sql");
 my @create = split("\n\n", $output);
 
 like(
-   $create[1],
+   $create[1] || '',
    qr/DEFAULT CHARSET=utf8/,
    "Can alter charset of new table"
-);
+) or diag($output);
 
 # #############################################################################
 # Done.

t/pt-online-schema-change/samples/stats-execute-5.5.txt

@@ -1,3 +1,9 @@
+Found 2 slaves:
+  h=127.0.0.1,P=12346
+  h=127.0.0.1,P=12347
+Will check slave lag on:
+  h=127.0.0.1,P=12346
+  h=127.0.0.1,P=12347
 Operation, tries, wait:
   copy_rows, 10, 0.25
   create_triggers, 10, 1
@@ -14,6 +20,7 @@ TS Dropped triggers OK.
 Successfully altered `bug_1045317`.`bits`.
 Creating new table...
 Created new table bug_1045317._bits_new OK.
+Waiting forever for new table `bug_1045317`.`_bits_new` to replicate to h=127.0.0.1,P=12346...
 Altering new table...
 Altered `bug_1045317`.`_bits_new` OK.
 TS Creating triggers...