System Management Guide: Operating System and Devices

Unconfiguring Async Adapters

This section provides steps for unconfiguring async adapters.

Before you can remove or replace an async adapter, you must unconfigure that adapter. Unconfiguring an async adapter involves the following tasks:

• Closing all applications that are using the adapter you are removing, replacing, or moving
• Ensuring that all devices connected to the adapter are identified and stopped
• Listing all slots that are currently in use or a slot that is occupied by a specific adapter
• Identifying the adapter's slot location
• Making parent and child devices unavailable
• Making the adapter unavailable

To perform these tasks, you must log in as root user.

For additional information, see PCI Hot Plug Management in the AIX 5L Version 5.1 System Management Concepts: Operating System and Devices.

Unconfiguring Async Adapters

Before you can replace or remove an async adapter, you must unconfigure the adapter and all the devices controlled by that adapter. To unconfigure the devices, you must terminate all the processes using those devices. Use the following steps:

1. Close all applications that are using the adapter you are unconfiguring.
2. Type lsslot-c pci to list all the hot plug slots in the system unit and display their characteristics.
3. Type lsdev -C -c tty to list all available tty devices and the current state of all the devices in the system unit. For additional information, see Removing a TTY in the AIX 5L Version 5.1 Asynchronous Communications Guide.
4. Type lsdev -C -c printer to list all printer and plotter devices connected to the adapter. For additional information, see Printers, Print Jobs, and Queues for System Administrators in the AIX 5L Version 5.1 Guide to Printers and Printing.
5. Use the rmdev command to make the adapter unavailable.

   Attention: Do not use the -d flag with the rmdev command for hot plug operations because this will cause your configuration to be removed.