Add boolean and high level procedure comments

Anvil/Tools/Storage.pm

@@ -174,6 +174,7 @@ sub auto_grow_pv
 		# Get the raw backing disk. 
 		my $device_path  = "";
 		my $pv_partition = 0;
+		my $software_raid = 0;
 		if ($pv_name =~ /(\/dev\/nvme\d+n\d+)p(\d+)$/)
 		{
 			$device_path  = $1;
@@ -192,6 +193,16 @@ sub auto_grow_pv
 				pv_partition => $pv_partition, 
 			}});
 		}
+		elsif ($pv_name =~ /\/dev\/md(\d+)$/)
+		{
+			$device_path    = $1;
+			$software_raid  = 1;
+			$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { 
+				device_path    => $device_path,
+				software_raid  => $software_raid,
+				pv_partition   => $pv_partition, 
+			}});
+		}
 		else
 		{
 			# No device found for the PV.
@@ -244,6 +255,7 @@ sub auto_grow_pv
 							free_space     => $anvil->Convert->bytes_to_human_readable({'bytes' => $size}),
 							device_path    => $device_path,
 							pv_partition   => $pv_partition,
+							software_raid  => $software_raid,
 						}});
 						next;
 					}
@@ -254,10 +266,14 @@ sub auto_grow_pv
 							free_space     => $anvil->Convert->bytes_to_human_readable({'bytes' => $size}),
 							device_path    => $device_path,
 							pv_partition   => $pv_partition,
+							software_raid  => $software_raid,
 						}});
 						
 						### Backup the partition table.
 						#sfdisk --dump /dev/sda > partition_table_backup_sda
+
+						#### Detect software raid devices and handle accordingly
+						#
 						my $device_name        = ($device_path =~ /^\/dev\/(.*)$/)[0];
 						my $partition_backup   = "/tmp/".$device_name.".partition_table_backup";
 						my $shell_call         = $anvil->data->{path}{exe}{sfdisk}." --dump ".$device_path." > ".$partition_backup;