Defining partitions

Define partitions as follows:

1. On the Primary Task Selection panel, select Define, modify, or view configuration data and on the resulting panel the object Processors. HCD displays the Processor List of processors currently defined in the IODF.
2. On the Processor List:
   • for SMP processors, select the processor and the Work with partitions action from the context menu (or action code  p ).
   • for XMP processors, select the processor and the Work with channel subsystems . . (XMP) action from the context menu (or action code  s ) to display the Channel Subsystem List. From this list, select the appropriate channel subsystem and the Work with partitions action from the context menu (or action code  p ).

   HCD displays the Partition List showing the currently defined partitions for the designated processor.

   *----------------------------- Partition List -----------------------------*
   |   Goto  Backup  Query  Help                                              |
   | -----------------------------------------------------------------------  |
   |                                                               Row 1 of 2 |
   |                                                                          |
   | Select one or more partitions, then press Enter. To add, use F11.        |
   |                                                                          |
   | Processor ID  . . . . : PROC1     This is the main processor             |
   | Configuration mode  . : LPAR                                             |
   | Channel Subsystem ID  :                                                  |
   |                                                                          |
   | / Partition Name   Number Usage + Description                            |
   | _ PROD1            1      OS      First production partition             |
   | _ PROD2            2      OS      Second production partition            |
   | **************************** Bottom of data **************************** |
   *--------------------------------------------------------------------------*

3. Use F11=Add to add the partitions. The data-entry fields are shown in the following figure, with sample data:

   *----------------------- Add Partition -----------------------*
   |                                                             |
   |                                                             |
   |  Specify the following values.                              |
   |                                                             |
   |  Partition name . . . TEST3                                 |
   |  Partition number . . 5                                     |
   |  Partition usage  . . CF     +                              |
   |                                                             |
   |  Description  . . . . CF partition                          |
   |                                                             |
   *-------------------------------------------------------------*

   The partition usage field marks a partition to be used for coupling facility support or for operating system usage. The type of partition usage can be either: CF, OS, or CF/OS.

   Specify CF/OS if the partition usage will be determined at partition activation. You can then include this partition into the access list of all channel path types. At partition activation those definitions are ignored that are not valid for the actual usage.

4. Press the Enter key. HCD displays the updated Partition List, if you have not yet defined any channel paths.

   If you have already defined channel paths, HCD displays the Update CHPID Access and Candidate Lists panel, where you can include the partition in the access or candidate list of a channel path. For an explanation of access and candidate list, refer to Defining channel paths.

   After pressing the Enter key HCD displays the Update Device Candidate Lists panel, if the new partition is given access to a channel path that attaches devices with an explicit device candidate list. Use this panel to add the new partition to the device candidate list of the listed devices.

Defining reserved partitions

For XMP processors, HCD provides the capability to add or remove logical partitions via dynamic I/O configuration. In an IODF used to create your initial IOCDS for power-on reset (POR), you can define reserved partitions, which you plan to add dynamically at a later point in time. In the Add Partition dialog (see step 3 from the previous list), you specify an ‘*’ as the placeholder partition name for reserved partitions. Reserved partitions will appear with this ‘*’ at the end of the Partition List. Furthermore, you specify a partition number, a usage type and optionally a description.

Reserved partitions do not appear in the access or candidate lists of channel paths or devices.

To activate a partition dynamically, you need to change the ‘*’ name to a valid partition name and to define the appropriate partition configuration before building a new production IODF.