Chapter 4 Setting Up Printers (Tasks)

This chapter describes how to set up a printer and make it accessible to systems on the network with Solaris Print Manager, which was previously available in the Solaris^TM Easy Access Server (SEAS) 3.0 release. This is a list of the step-by-step instructions in this chapter.

• "How to Start Solaris Print Manager"

• "How to Add a New Attached Printer With Solaris Print Manager"

• "How to Add Printer Access With Solaris Print Manager"

• "How to Set Up a .printers File"

• "How to Add a Network Printer Using Printer Vendor Supplied Tools"

• "How To Add A Network Printer Using LP Commands"

For overview information about printers, see Chapter 2, Print Management (Overview).

Setting Up Printing

The table below provides an overview of the tasks necessary to set up print servers (Add a Printer) and print clients (Add Access to the Printer). A local printer is one which is physically cabled to the print server; a network printer is physically attached to the network. Adding access to a printer, or adding remote access, is the process of giving print clients (all those machines which are not the server) access to the printer.

Setting Up Printing Task Map

Setting Up a Printer With Solaris Print Manager

The following table describes each printer attribute to help you determine the information needed to set up a printer with Solaris Print Manager.

Starting Solaris Print Manager

To use Solaris Print Manager to set up your printers, start Solaris Print Manager either by selecting Printer Administration from CDE Workspace menu or by starting it from the command line. See the following section for details.

How to Start Solaris Print Manager

1. Verify that the following prerequisites are met. To use Solaris Print Manager, you must:

   • Have a bit-mapped display monitor. Solaris Print Manager can be used only on a system with a console that is a bit-mapped screen, such as a standard display monitor that comes with a Sun workstation.

   • Be running an X Window System, such as the CDE environment, or be using the remote display feature on a system running an xhost environment.

   • Be logged in as superuser on the printer server to install an attached or network printer, or on the print client to add access to a printer.

   • Have the required access privileges for managing the NIS, NIS+, or NIS+ (xfn) database:

     • If your name service is NIS, you must have the root password for the NIS master.

     • If you name service is NIS+, you might need to do the following:

       1. Log in to the NIS+ master as superuser.

       2. Identify the group that owns the printers table:

          # niscat -o printers.org_dir.domain_name.com . . . Group : "admin.domain_name.com"

       3. If necessary, add the system that runs Solaris Print Manager to the NIS+ admin group authorized to update the printers.org_dir.<domain> file.

          # nisgrpadm -a admin.domain_name.com host_name

       4. Log in to the system that runs Solaris Print Manager as superuser. Depending on your NIS+ configuration, you might also need to run the /usr/bin/keylogin command. See keylogin(1) for more information.

     • If your name service is NIS+ (xfn), you might need to do the following:

       1. Log in to the NIS+ master as superuser.

       2. Identify the group that owns the federated naming table:

          # niscat -o fns.ctx_dir.domain_name.com . . . Group : "admin.domain_name.com"

       3. If necessary, add the system that runs Solaris Print Manager to the NIS+ admin group authorized to update the fns.ctx_dir.<domain> file.

          # nisgrpadm -a admin.domain_name.com host_name

       4. Log in to the system that runs Solaris Print Manager as superuser. Depending on your NIS+ configuration, you might also need to run the /usr/bin/keylogin command. See keylogin(1) for more information.

   • Have the SUNWppm package installed.

     # pkginfo | grep SUNWppm system SUNWppm Solaris Print Manager

2. Start Solaris Print Manager by selecting Printer Administration from the Tools option of the CDE Workspace menu. Or, select the Applications menu from the CDE front panel, and click the Printer Administration icon in the Application Manager's System_Admin window. You can also start Solaris Print Manager by using the following command.

   # /usr/sadm/admin/bin/printmgr &

   The Select Naming Service window overlays the Solaris Print Manager main window.

   If you want to use Solaris Print Manager from a remote system, set the DISPLAY environment variable, and then start Solaris Print Manager:

   # DISPLAY=hostname:display_number # export DISPLAY # /usr/sadm/admin/bin/printmgr &

   ---

   Note -

   If Solaris Print Manager fails to start from the CDE menu or from the command line, check the following:

   1. Superuser (root) might not have permission to connect to the Xserver process on the local or remote system. If this happens, type this command:

      $ xhost +hostname $ su (Enter root's password) # /usr/sadm/admin/bin/printmgr &

      Replace hostname with either the local or remote system name before restarting Solaris Print Manager.

   2. Verify the SUNWppm package is installed on the local or remote system.

      $ pkginfo | grep SUNWppm

   ---

3. Select the name service used in your network from the Select Naming Service window. Choices are: NIS+ (xfn), NIS+, NIS, or files.

4. Check that the domain name is correct.

   The Solaris Print Manager main menu is displayed after the name service is loaded successfully.

Setting Up a Print Server

When you install an attached printer and/or a network printer to a system, the printer is made accessible to the local system. The system on which you install the printer becomes the printer server.

The following sections describe how to use the new Solaris Print Manager to add an attached printer or a network printer on a printer server. The example that follows each Solaris Print Manager procedure describes how to add a printer with LP commands.

How to Add a New Attached Printer With Solaris Print Manager

1. Select the system which is to be the printer server.

2. Connect the printer to the printer server and turn on the power to the printer.

   Consult the printer vendor's installation documentation for information about the hardware switches and cabling requirements.

3. Start Solaris Print Manager on the printer server where you connected the printer.

   See "How to Start Solaris Print Manager" for instructions.

4. Select New Attached Printer from the Printer menu.

   The New Attached Printer window is displayed.

5. Fill in the window.

   If you need information to complete a field, click the Help button.

6. Click OK.

7. Verify that the printer has been installed by checking for the new printer entry in the Solaris Print Manager main window. Verify the printer can print requests by using the following command:

   $ lp -d printer-name filename

8. Exit Solaris Print Manager.

   Choose Exit from the Print Manager Menu.

Example--Adding a New Attached Printer With LP Commands

This example shows how to make a local PostScript printer available for printing on a print server. The commands in this example must be executed on the print server where the printer is connected. The following information is used as an example. The information you provide will vary:

• Printer name: luna

• Port device: /dev/term/b

• Printer type: PS

• File content type: postscript

  # chown lp /dev/term/b # chmod 600 /dev/term/b 1 # lpadmin -p luna -v /dev/term/b 2 # lpadmin -p luna -T PS 3 # lpadmin -p luna -I postscript 4 # cd /etc/lp/fd # for filter in *.fd;do > name=`basename $filter .fd` > lpfilter -f $name -F $filter > done 5 # accept luna destination "luna" now accepting requests # enable luna 6 printer "luna" now enabled # lpadmin -p luna -D "Room 1954 ps" 7 # lpstat -p luna 8 printer luna is idle. enabled since Jul 12 11:17 1999. available.

1. Gives lp ownership and sole access to a port device.

2. Defines the printer name and the port device the printer will use.

3. Sets the printer type of the printer.

4. Specifies the file content types to which the printer can print directly.

5. Adds print filters to the print server.

6. Accepts print requests for the printer and enables the printer.

7. Adds a description for the printer.

8. Verifies that the printer is ready.

Where to Go From Here

Use the following table to determine which tasks to complete next.

Setting Up a Print Client

A print client is a system that is not the server for the printer, yet has access to the printer. A print client uses the services of the print server to spool, schedule and filter the print jobs. Note that one system can be a print server for one printer and be a print client for another printer.

Access to a printer can be configured on a domain-wide basis or on a per-machine basis depending on whether you add the printer information to the name service database.

The following sections describe how to use the new Solaris Print Manager to add access to a printer on a print client. The example that follows this procedure describes how to add printer access with LP commands.

How to Add Printer Access With Solaris Print Manager

1. Start Solaris Print Manager on the system where you want to add access to a remote printer.

   See "How to Start Solaris Print Manager" for instructions.

2. Select Add Access to Printer from the Printer menu.

   The Add Access to Printer window is displayed.

3. Fill in the window.

   If you need information to complete a field, click the Help button.

4. Click OK.

5. Verify that access to the printer is added by checking for the new printer entry in the Solaris Print Manager main window. Verify the printer can print requests by using the following command:

   $ lp -d printer-name filename

6. Exit Solaris Print Manager.

   Choose Exit from the Print Manager Menu.

Example--Adding Printer Access With LP Commands

If you want to print to a remote printer, you must add access to the remote printer. This example shows how to configure access to a printer named luna, whose print server is saturn. The system saturn becomes a print client of the printer luna.

# lpadmin -p luna -s saturn 1
# lpadmin -p luna -D "Room 1954 ps" 2
# lpadmin -d luna 3
# lpstat -p luna 4
		printer luna is idle. enabled since Jul 12 11:17 1999. available.

1. Identifies the printer and the print server.

2. Adds a description for the printer.

3. Sets the printer as the system's default printer destination.

4. Verifies that the printer is ready.

Setting Up a .printers File

There is no need to set up a .printers file in your users' home directories if they don't need customized printer information. However, the .printers file enables users to establish their own custom printer aliases. You can use the _default alias to make a printer the default. You can also set up a special _all alias to define a list of printers affected when you cancel a print request or check the status of printers.

Keep in mind use of the .printers file by the LP print service is controlled by the name service switch (/etc/nsswitch.conf). The default configuration is that the print service checks a user's home directory to locate printer configuration information before its checks the other name services. This means you can tailor a user's printer configuration file to use custom printer information rather than the shared information in the name service.

See printers(4) for more information about the .printers file. See nsswitch.conf(4) for more information about the name service switch.

How to Set Up a .printers File

1. Log in to the user's system as superuser.

2. Start the file editor you want to use to create a .printers file in the user's home directory.

3. (Optional) Set up the _default alias to make a specific printer your default printer, using an entry similar to the one shown in the following example.

   _default printer_name

4. (Optional) Set up the _all alias to define the printers affected when you cancel a print request or check the status of printers, using an entry similar to the one shown in the next example.

   _all printer1,printer2,printer3

5. Save the file as .printers.

Adding a Network Printer

A network printer is a hardware device this is directly connect to the network. This means it can be accessed from a print server without actually connecting it the print server with a cable. It has its own system name and IP address. Even though a network printer is not connected to a print server, it is necessary to set up a print server for it. The print server provides queuing capabilities, filtering, and printing administration for the network printer.

Network printers might use one or more special protocols that require a vendor-supplied printing program. The procedures to set up the vendor-supplied printing program can vary. If the printer does not come with vendor supplied support, the Solaris network printer support can be used with most devices; it is strongly advised to use the print vendor supplied software when possible.

The vendor might supply an SVR4 printer interface script to replace the standard printer interface script. If so, their SVR4 interface script will call the vendor-supplied printing program to send the job to the printer. If not, you will need to modify the standard interface script to call the vendor-supplied printing program. You can do this by editing the per-printer copy of the standard interface script to call the vendor-supplied printing program.

The terms used in network printer configuration are:

• Print server: The machine which spools and schedules the jobs for a printer. This is the machine on which the printer is configured.

• Printer-host device: The printer-host device is the software and hardware supplied by a vendor which provides network printer support for a non-network capable printer. The combination of the printer-host device with one or more printers attached to it creates a network printer.

• Printer node: This is either the physical printer or the printer-host device. It is the physical printer when the network support resides in the physical printer. It is the printer-host device when an external box is used to provide the network interface. The printer node name is the machine name given with the IP address. This name is selected by the system administrator and has no default or vendor requirement. The printer nodename, as with all nodes, must be unique.

• Printer name: The name entered on the command line when using any of the printer commands. It is selected by the system administrator at the time of printer configuration. Any one physical printer can have several printer or queue names; each provides access to the printer.

• Destination or network printer access name: The internal name of the printer node port that is used by the printer sub-system to access the printer. It is the name of the printer node, or the name of the printer node with a printer vendor port designation. Any printer vendor port designation is explicitly defined in the printer vendor documentation. It is printer specific. In the case where the printer is a printer-host device and a printer, the port designation is documented in the printer-host device documentation. The format is:

  printer_node_name

  or

  printer_node_name:port_designation

• Protocol: the over-the-wire protocol used to communicate with the printer. The printer vendor documentation supplies the information regarding the protocol to select. The network printer support supplies both BSD Printer Protocol and raw TCP. Due to implementation variations, you might want to try both.

• Timeout, or retry interval: Timeout is a seed number representing the number of seconds to wait between attempting connections to the printer. This seed number is the smallest amount of time to wait between attempted connections, and increases with an increase in failed connections. After repeated failures to connect to the printer, a message is returned to the user requesting possible human intervention. Attempts to reconnect continue until successful or the job is cancelled by the job owner.

Printer Vendor Supplied Software for Network Printers

Network printers often have software support provided by the printer vendor. If your printer has printer vendor supplied software it is strongly advised that the printer vendor software be utilized. The software is designed to support the attributes of the printer and can take full advantage of the printer capabilities. Read the printer vendor documentation to install and configure the printer under an LP print system.

Sun Support for Network Printers

If the network printer vendor does not provide software support, the Sun supplied software is available. The software provides generic support for network printers and is not capable of providing full access to all possible printer attributes.

A general discussion of how to add a network printer is provided in Chapter 4, Setting Up Printers (Tasks). The following is a discussion of printer management using the Sun supplied software.

Invoking the Network Printer Support

The software support for network printers is called through the interface script. Configuring a network printer with the network interface script, netstandard, causes the network printer support module to be called. The command to configure the printer with the network support is:

lpadmin -p printer_name -m netstandard 

Selecting the Protocol

The print sub-system uses BSD print protocol and raw TCP to communicate with the printer. The printer vendor documentation will provide the information about which protocol to use. In general, we have found that the TCP protocol is more generic across printers.

The command to select the protocol is:

lpadmin -p printer_name -o protocol=bsd

or

lpadmin -p printer_name -o protocol=tcp

If the protocol selected is the BSD print protocol, you can further select the order of sending the control file to the printer. Some printers expect the control file, then the data file; others the reverse. See the printer vendor documentation for this information. The default is to send the control file first.

The command to select the ordering is:

lpadmin -p printer_name -o bsdctrl=first

or

lpadmin -p printer_name -o bsdctrl=last

Selecting the Printer Node Name

The system administrator selects the printer node name. This name must be unique, as with any node on the network. The printer node name is associated with the IP address of the printer.

Selecting the Destination (or Network Printer Access) Name

The print subsystem requires access information for the printer. This is the name that the subsystem uses when making the network connection to the printer. This name is supplied by the system administrator to the print sub-system through the lpadmin command. It becomes part of the printer configuration database. The printer access name is the name of the printer node, sometimes qualified by a port name. Port designation varies across printer vendors. You will find information about port designation in the documentation that is provided with the printer by the printer vendor. The format of printer access name is:

printer_node-name[:port_designation]

Example 1--Destination (or Network Printer Access Name) With Port Designation (Number)

A common port designation with TCP is 9100. If the printer node name is pn1, and the printer vendor defines the port as 9100, then the printer access name is: pn1:9100. To configure a printer in this case use:

lpadmin -p printer_name -o dest=pn1:9100

Example 2--Destination (or Network Printer Access Name) With Port Designation (Name)

When using the BSD protocol, the port designation might not be a number, but some name defined by the printer vendor, for example: xxx_parallel_1. If the printer node name is cardboard, then the printer access name is: cardboard:xxx_parallel_1. To configure a printer in this case use:

lpadmin -p printer_name -o dest=cardboard:xxx_parallel_1

Example 3--Destination (or Network Printer Access Name) With No Port Designation

If there is no port designation, and the printer node name is newspaper, the printer access name is the printer node name: newspaper. To configure a printer in this case use:

lpadmin -p printer_name -o dest=newspaper

Setting the Timeout Value

The timeout option is provided to allow for individual selection of the amount of time (in seconds) to wait between successive attempts to connect to the printer. Some printers have a long warm up time and a longer timeout value is advised. The default is 10 seconds.

The timeout value does not impact the success or failure of the print process. It is a seed value which the software uses as the initial timeout count; on repeated failures, this count is increased. A message is sent to the spooler when repeated attempts to connect to the printer fail. This alerts the user that intervention might be required. This could be anything from the printer being turned off, to out of paper. Should these messages be produced too often, for example when the printer is warming up, increasing the timeout value will eliminate spurious messages.

The system administrator can experiment to find the optimal timeout value. The command to set the timeout is:

lpadmin -p printer_name -o timeout=n

Managing Network Printer Access

Each network printer should have one and only one server that provides access to it. This enables the server to manage the access to the printer and keep jobs coherent.

The default device for the network printer is /dev/null. This is sufficient when there is only one queue for the printer. Should more queues be required, set the device to a file. This enables the print system to restrict access to the printer across queues. The following commands create a device file and configure it as the network printer device.

touch /path/filename
chmod 600 /path/filename
lpadmin -p printer_name -v /path/filename

The following is an example of creating a device file called devtreedown.

# touch /var/tmp/devtreedown
# chmod 600 /var/tmp/devtreedown
# lpadmin -p treedown -v /var/tmp/devtreedown

How to Add a Network Printer Using Printer Vendor Supplied Tools

1. Connect the printer to the network and turn on the power to the printer.

   Consult the printer vendor's installation documentation for information about the hardware switches and cabling requirements. Get an IP address and select a name for the printer node. This is equivalent to adding any node to the network.

2. Follow the printer vendor instructions to add the network printer to a SunOS system that has an SVR4 LP print spooler.

   Use the printer vendor instructions to configure the network printer. These will be specific to the vendor and printer.

3. Add client access to the new printer.

   Now that the printer has been added, create access to the printer for the clients. See "Setting Up a Print Client".

4. Optional tasks to complete.

   There are several optional tasks you might want to complete when setting up a network printer. See "Setting Up Printing Task Map" for pointers to the remaining tasks.

How To Add A Network Printer Using LP Commands

This describes the steps necessary to setup a network printer using the network printer support software. The use of this software is intended for those printers that do not come with vendor supplied software.

1. Connect the printer to the network and turn on the power to the printer.

   Consult the printer vendor's installation documentation for information about the hardware switches and cabling requirements. Get an IP address and select a name for the printer node. This is equivalent to adding any node to the network.

2. Collect the information required to configure a network printer.

   • Printer name

   • Printer server

   • Network printer access name

   • Protocol

   • Timeout

   See the terms described in "Adding a Network Printer" for more information.

3. Define the printer name, the device, the printer type and content type by using the lpadmin(1M) command.

   1. Define the printer name and the port device the printer will use.

      # lpadmin -p printer-name -v /dev/null

      The device to use is /dev/null.

   2. Identify the interface script the printer will use.

      # lpadmin -p printer-name -m netstandard

      The interface script that is supplied with the network printer support software is /usr/lib/lp/model/netstandard.

   3. Set the printer destination, protocol, and timeout values.

      # lpadmin -p printer-name -o dest=access-name:port -o protocol=protocol -o timeout=value

      -p printer-name	Specifies the network printer name.
      -o dest=access-name:port	Sets the printer destination to the network printer access name and a designated printer vendor port, if it is defined in the printer vendor documentation. See "Adding a Network Printer" for more information.
      -o protocol:protocol	Sets the over-the-wire protocol used to communicate with the printer. Both BSD and raw TCP are supported.
      -o timeout:value	Sets a retry timeout value that represents a number of seconds to wait between attempting connections to the printer. See "Adding a Network Printer" for more information.

   4. Specify the file content types of the printer and the printer type.

      # lpadmin -p printer-name -I content-type -T printer-type

4. Add filters to the print server by using the lpfilter(1M) command.

   # cd /etc/lp/fd # for filter in *.fd;do > name=`basename $filter .fd` > lpfilter -f $name -F $filter > done

5. Enable the printer to accept printer requests and to print the requests.

   # accept printer-name # enable printer-name

6. Verify the printer is correctly configured by using the lpstat(1M) command.

   # lpstat -p printer-name

7. Add client access to the new printer.

   Now that the printer has been added, create access to the printer for the clients. See "Setting Up a Print Client".

8. Optional tasks to complete.

   There are several optional tasks you might want to complete when setting up a printer. See "Setting Up Printing Task Map" for pointers to the remaining tasks.

The commands in this example must be executed on the print server. The following information is used as an example. The information you provide will vary.

• Printer name: luna1

• Server: saturn

• Network printer access name: nimquat:9100

• Protocol: tcp

• Timeout: 5

• Interface: /usr/lib/lp/model/netstandard

• Printer type: PS

• Content types: postscript

• Device: /dev/null

  # lpadmin -p luna1 -v /dev/null 1 # lpadmin -p luna1 -m netstandard 2 # lpadmin -p luna1 -o dest=nimquat:9100 -o protocol=tcp -o timeout=5 3 # lpadmin -p luna1 -I postscript -T PS 4 # cd /etc/lp/fd # for filter in *.fd;do > name=`basename $filter .fd` > lpfilter -f $name -F $filter > done 5 # accept luna1 destination "luna1" now accepting requests # enable luna1 6 printer "luna1" now enabled # lpadmin -p luna1 -D "Room 1954 ps" 7 # lpstat -p luna1 8 printer luna1 is idle. enabled since Jul 12 11:17 1999. available.

1. Defines printer name and sets the device to /dev/null.

2. Defines the interface script for network printers.

3. Sets the destination, protocol and timeout.

4. Specifies the file content types to which the printer can print directly, and the printer type.

5. Adds print filters to the print server.

6. Accepts print requests for the printer and enables the printer.

7. Adds a description for the printer.

8. Verifies that the printer is ready.

Converting Printer Configuration Information

This section explains how to convert the printer configuration information from systems running the SunOS 5.5.1 release and copy this information to print clients so they can access existing printers.

If you have only a few existing printers, it might be easier to add access to the printers by using Solaris Print Manager rather than convert the printer configuration information and distribute it to print clients. See Table 4-1 information on adding access to printers.

Converting Printer Configuration Information Task Map

The table below provides an overview of converting printer configuration information.

Converting Existing Printer Configuration Information

Existing printer configuration information will automatically be converted when installing or upgrading to the Solaris 8 release. This section explains how to convert the printer configuration information for a system running SunOS 5.5.1 release or a system running the SunOS 4.1 release to the /etc/printers.conf printer configuration file. You'll use one of two print administration commands to automate the conversion task:

• The conv_lp(1M) command enables you to convert information in the /etc/lp/printers directory on a SunOS 5.8 system to entries in the system's /etc/printers.conf file. See "How to Convert Printer Information For a System Running the SunOS 5.5.1 Release" for instructions.

• The conv_lpd(1M) command enables you to convert information in a /etc/printcap configuration file from a SunOS 4.1 system to entries in a /etc/printers.conf file. See "How to Convert Printer Information For a System Running the SunOS 4.1 Release" for instructions.

If you are not using a name service, you should create a master /etc/printers.conf file that includes the existing printers at your site. You can then copy the master file to all the print clients or by loading it into the NIS or NIS+ name service. This is a good way to initially enable all the new print clients access to the existing printers at your site.

If you are using the NIS or NIS+ name service to configure printer information, do not use a /etc/printers.conf file on your print clients. A print client uses the /etc/printers.conf file first to locate a printer; however, the /etc/printers.conf file might conflict with the printer information in the NIS or NIS+ maps and cause unexpected results. To avoid this problem, remove the /etc/printers.conf file on print clients when you want them to use NIS or NIS+ for printer information.

How to Convert Printer Information For a System Running the SunOS 5.5.1 Release

1. Log in as superuser on a system running the SunOS 5.8 release.

2. Convert the printer configuration information in the system's /etc/lp/printers directory to the /etc/printers.conf file.

   # /usr/lib/print/conv_lp

How to Convert Printer Information For a System Running the SunOS 4.1 Release

1. Copy the /etc/printcap file from a SunOS 4.1 system to a system running the SunOS 5.8 release.

2. Log in as superuser on the system running the SunOS 5.8 release to which you copied the /etc/printcap file.

3. Convert the printer configuration information in the /etc/printcap file to the /etc/printers.conf file.

   # /usr/lib/print/conv_lpd

How to Convert Printer Configuration Information in NIS+ (+xfn) to NIS+ Format

The following conversion script can only be run on a system running the Solaris 8 release.

1. Log in as superuser on the NIS+ master.

2. Copy the following conversion script to system and name it something like /tmp/convert.

   #!/bin/sh # # Copyright (C) 1999 by Sun Microsystems, Inc. # All Rights Reserved # PRINTER="" for LINE in `lpget -n xfn list | tr "\t " "^A^B"` ; do LINE=`echo ${LINE} | tr "^A^B" "\t " | sed -e 's/^ \t//g'` case "${LINE}" in *:) PRINTER=`echo ${LINE} | sed -e 's/://g'` ;; *=*) lpset -n nisplus -a "${LINE}" ${PRINTER} ;; esac done

   ---

   Note -

   If you cut and paste this script into a text file, change both ^A^B (caratA caratB) sequences to Control A Control B.

   ---

3. Make the script executable.

   # chmod 755 /tmp/convert

4. Run the conversion script.

   # /tmp/convert