diff --git a/mxmount b/mxmount
index 3cb1b66..887a1e3 100755
--- a/mxmount
+++ b/mxmount
@@ -13,7 +13,7 @@ my $exports    = "/etc/exports";
 
 ########################################
 
-my $tag = "# DO NOT EDIT BELOW THIS LINE # created by /usr/bin/mxmount #";
+my $exportstag = "# DO NOT EDIT BELOW THIS LINE # created by /usr/bin/mxmount #";
 
 my $fullhostname;
 my $hostname;
@@ -31,7 +31,7 @@ $fullhostname = hostname();
     DEFAULT_MOUNT_OPTIONS  => '',
     DEFAULT_EXPORT_OPTIONS => '',
     DEFAULT_MOUNT_PREFIX   => '/',
-    
+
     SHORTHOST => $hostname,
     FULLHOST  => $fullhostname,
 
@@ -89,21 +89,21 @@ sub create_exports {
     foreach my $exp (@exports) {
         chomp($exp);
         next if($exp =~ /^\s*$/);
-        last if($exp eq $tag);
+        last if($exp eq $exportstag);
         print EXPORTS "$exp\n";
     }
 
-    print EXPORTS "\n$tag\n\n# auch du nicht, donald 8)\n\n";
+    print EXPORTS "\n$exportstag\n\n";
 
     foreach my $mp (@$allmp) {
         next if($mp->{noexport});
         @CMD = ($mp->{mountpoint}, $mp->{exportopts});
-        
+
         print join " ", "$exports: ", @CMD, "\n";
         print EXPORTS join " ", @CMD, "\n";
-        
+
     }
-    
+
     close EXPORTS;
 }
 
@@ -112,11 +112,11 @@ sub mount_all {
     my $allmp = $D{$hostname};
     my @CMD;
     foreach my $mp (sort { $a->{mountpoint} cmp $b->{mountpoint} } @$allmp) {
-        
+
         @CMD = ();
-        
+
         push @CMD, 'mount', "LABEL=$mp->{label}", $mp->{mountpoint};
-        
+
         if($mp->{fs}) {
             push @CMD, '-t', $mp->{fs};
         }
@@ -133,7 +133,7 @@ sub parse_data {
    my @lines = @_;
    my @invalid = ();
    my @data;
-   
+
    my $rest;
 
    foreach(@lines) {
@@ -145,7 +145,7 @@ sub parse_data {
        }
 
        my $D = {};
-       
+
        $D->{line} = $_;
 
        $D->{host}  = $data[0];
@@ -156,20 +156,23 @@ sub parse_data {
            $D->{noexport} = 1;
            $D->{label}    = $1;
        }
-       
+
        if($D->{label} =~ /(.*):(.*)/) {
            $D->{label}      = $1;
            $D->{mountpoint} = $2;
        } else {
-           if($D->{label} =~ /^X/) {
+           if($D->{label} =~ /^X/) {                  # X: decent controller based raid
                $D->{mountpoint} = 'X/' . $D->{label};
                $D->{label} = lc($D->{label});
-           } elsif($D->{label} =~ /^C/) {
+           } elsif($D->{label} =~ /^C/) {             # C: controller based raid, confidential
                $D->{mountpoint} = 'C/' . $D->{label};
                $D->{label} = lc($D->{label});
                if (!$data[3]) {
                    $D->{noexport} = 1;
                }
+           } elsif($D->{label} =~ /^M/) {             # M: decent software raid (mdadm)
+               $D->{mountpoint} = 'M/' . $D->{label};
+               $D->{label} = lc($D->{label});
            } elsif($D->{label} =~ /^data(.*)/) {
                $D->{mountpoint} = $1;
            } else {
@@ -189,11 +192,11 @@ sub parse_data {
        }
 
        $D->{exportopts} = $data[3] ? $data[3] : $V{DEFAULT_EXPORT_OPTIONS};
-       
+
        foreach(qw(host label mountpoint fs mountopts exportopts )) {
            $D->{$_} = expand_variables($D->{$_});
        }
-       
+
 
        push @{$D{$D->{host}}}, $D;
    }
@@ -202,11 +205,11 @@ sub parse_data {
 
 sub expand_variables {
     my $s = shift;
-    
+
     foreach my $k (keys %V) {
         $s =~ s/$k/$V{$k}/g;
     }
-    
+
     return $s;
 }
 
@@ -238,13 +241,13 @@ sub read_file {
   while(<F>) {
     chomp;
     next if(/^\s*#/ or /^\s*$/);
-  
+
     $cont=0;
-  
+
     s/#.*$//;  # remove comments..
-  
+
     $_ = $line . $_;
-  
+
     if(s/\\\s*$//) {
       # line continous in next line..
       $cont=1;
@@ -260,7 +263,7 @@ sub read_file {
       $line="";
     }
   }
-  
+
   close F;
   return @lines;
 }