--- a/check_drbd.pl	Thu Aug 25 16:50:49 2011 +0200
+++ b/check_drbd.pl	Fri Aug 08 13:34:57 2014 +0200
@@ -62,16 +62,21 @@
 
     open( FH, $file )
       or print "$NAME CRITICAL: $file $!\n" and exit $ERRORS{CRITICAL};
+    my $r;
     while (<FH>) {
         chomp;
-/^.*(?<line>(?<resource>\d+):\s+cs:(?<connection_state>\S+)\s+(?:st|ro):(?<roles>\S+)\s+(?:ds|ld):(?<disk_states>\S+))/
-          or next;
-        $drbd{ $+{resource} } = {
-            line             => $+{line},
-            connection_state => $+{connection_state},
-            roles            => $+{roles},
-            disk_states      => $+{disk_states}
-        };
+        if (/^.*(?<line>(?<resource>\d+):\s+cs:(?<connection_state>\S+)\s+(?:st|ro):(?<roles>\S+)\s+(?:ds|ld):(?<disk_states>\S+))/) {
+            $r = $+{resource};
+            $drbd{$r} = {
+                line             => $+{line},
+                connection_state => $+{connection_state},
+                roles            => $+{roles},
+                disk_states      => $+{disk_states}
+            };
+        } elsif (defined $r and /oos:(?<out_of_sync>\d+)/) {
+            $drbd{$r}->{out_of_sync} = $+{out_of_sync};
+            $drbd{$r}->{line} .= " oos: $+{out_of_sync}";
+        }
     }
     close(FH);
 
@@ -89,6 +94,9 @@
           if ( $dev->{disk_states} ne "UpToDate/UpToDate" )
           and ( $dev->{disk_states} ne "Consistent" );
 
+        $dev->{state} = "CRITICAL", next
+          if ( $dev->{out_of_sync} != 0 );
+
         $dev->{state} = "WARNING", next
           if $dev->{connection_state} ne "Connected";