--- /dev/null
+--- percona-server-5.6.20-68.0/scripts/mysqldumpslow.sh~ 2014-08-29 10:58:05.000000000 +0300
++++ percona-server-5.6.20-68.0/scripts/mysqldumpslow.sh 2014-09-06 20:50:22.000000000 +0300
+@@ -51,8 +51,33 @@
+
+ $opt{'help'} and usage();
+
++# find config file for first defined cluster
++sub get_defaults_file {
++ my $clusters_file = '/etc/mysql/clusters.conf';
++ return unless -f $clusters_file;
++
++ open(my $fh , "< $clusters_file") or return;
++ while (<$fh>) {
++ my ($config, $clusterdir) = m{^([^#]+)\s*=\s*(.+)$};
++ next unless $config;
++
++ if ($config !~ m{/}) {
++ my $f = "/etc/mysql/$config";
++ return $f if -f $f;
++
++ my $f = "$clusterdir/$config";
++ return $f if -f $f;
++ }
++ return $config;
++ }
++ close($fh) or die $!;
++ return undef;
++}
++
+ unless (@ARGV) {
+- my $defaults = `my_print_defaults mysqld`;
++ my $defaults_file = get_defaults_file;
++ my $defaults_arg = "-c $defaults_file" if $defaults_file;
++ my $defaults = `my_print_defaults $defaults_arg mysqld`;
+ my $basedir = ($defaults =~ m/--basedir=(.*)/)[0]
+ or die "Can't determine basedir from 'my_print_defaults mysqld' output: $defaults";
+ warn "basedir=$basedir\n" if $opt{v};
+@@ -61,7 +86,7 @@
+ my $slowlog = ($defaults =~ m/--slow-query-log-file=(.*)/)[0];
+ if (!$datadir or $opt{i}) {
+ # determine the datadir from the instances section of /etc/my.cnf, if any
+- my $instances = `my_print_defaults instances`;
++ my $instances = `my_print_defaults $defaults_arg instances`;
+ die "Can't determine datadir from 'my_print_defaults mysqld' output: $defaults"
+ unless $instances;
+ my @instances = ($instances =~ m/^--(\w+)-/mg);