Setting nPartition Core Cell Choices

You can set the core cell choices for an nPartition by using any one of the following procedures:

The core cell choice settings for an nPartition are optional preferences that establish which cells in the nPartition are preferred to be selected as the core cell for the nPartition.




	NOTE: You do not need to specify core cell choices for a valid core cell to be chosen. By default on four-cell and HP Superdome servers, system firmware selects the lowest numbered eligible cell to be the active core cell for the nPartition. By default on two-cell servers, cell 1 is selected as the core cell.

Procedure 6-20 Setting Core Cell Choices (BCH Menu)

From the BCH Menu, use the Configuration menu, COC command to configure core cell choices for the nPartition. The BCH Menu is available only on HP 9000 systems.

Access the BCH Main Menu for the nPartition whose core cell choices you want to configure.
Login to the service processor (MP or GSP) and enter CO to access the Console list. Select the nPartition console. When accessing the console, confirm that you are at the BCH Main Menu (the Main Menu: Enter command or menu> prompt). If at a BCH menu other than the Main Menu, then enter MA to return to the BCH Main Menu.
Enter CO to access the BCH Configuration Menu.
Enter the COC command to list or set the core cell choices for the local nPartition.
Entering COC with no arguments lists all core cell choice preferences.
The COC command syntax is:
COC choice cell
where choice is 0-3 (with 0 being the highest-priority choice) and where cell is the cell ID.
For example, COC 0 2 sets the most preferred core cell choice to be cell ID 2. Likewise, COC 1 4 sets the next (second-highest priority) core preference to be cell ID 4.
Use the HELP COC command for other details about the COC command.
Exit the console and service processor interfaces if finished using them.
To exit the BCH environment type ^B (Control-B); this exits the nPartition console and returns to the service processor Main Menu. To exit the service processor, type X at the Main Menu.

Procedure 6-21 Setting Core Cell Choices (EFI Shell)

From the EFI Shell environment, use the rootcell command to set core cell choices for the local nPartition. The EFI Shell is available only on HP Integrity systems.

Access the EFI Shell environment for the nPartition whose core cell choices you want to configure.
Login to the service processor (MP or GSP) and enter CO to access the Console list. Select the nPartition console.
When accessing the console, confirm that you are at the EFI Boot Manager menu (the main EFI menu). If at another EFI menu, select the Exit option from the sub-menus until you return to the screen with the EFI Boot Manager heading.
From the EFI Boot Manager menu, select the EFI Shell menu option to access the EFI Shell environment.
At the EFI Shell interface enter the rootcell command to list or set the core cell choices for the local nPartition.
Enter the rootcell command with no arguments to display the current core cell choice list.
Enter the rootcell clear command to clear the list of preferred core cells.
Enter rootcell c0 c1... to specify up to four choices, with c0 being the highest-priority choice and c0-c3 being the cell numbers.
Exit the console and service processor interfaces if finished using them.
To exit the EFI environment type ^B (Control-B); this exits the nPartition console and returns to the service processor Main Menu. To exit the service processor, type X at the Main Menu.

Procedure 6-22 Setting Core Cell Choices (nPartition Commands)

From the command line, use the parmodify command to configure the core cell choices for an nPartition. You also can use the parstatus -V -p# command to list the core cell choices for an nPartition (-p# where # is the nPartition number).




	NOTE: You can remotely perform this task using remote administration options supported by the Enhanced nPartition Commands or Partition Manager Version 2.0. Remote administration is supported by the Partition Manager ToolsSwitch Complexes action and by the nPartition command `-u... -h...` options or `-g... -h...` options. For details see “Tools for Configuring nPartitions”.

Login to a system with the nPartition commands installed.
If using remote administration features to set core cell choices, you can login to any system with Enhanced nPartition Commands installed.

Issue the parstatus -V -p# command to list the current core cell choices and core cell use for an nPartition.

The parstatus -V -p# command list detailed status for the specified nPartition (-p# where # is the nPartition number).

The nPartition status includes the current active core cell ("Core Cell"), and any core cell choice settings.

The core cell choice preferences are listed by parstatus as the "Core Cell Alternate" settings with "1" being the highest priority and "2" through "4" as the lower priority core cell choices.

# parstatus -V -p0
[Partition]
Partition Number       : 0 
Partition Name         : jules00
Status                 : active 
IP address             : 0.0.0.0
Primary Boot Path      : 0/0/2/0/0.13.0
Alternate Boot Path    : 0/0/2/0/0.0.0
HA Alternate Boot Path : 0/0/2/0/0.14.0
PDC Revision           : 6.0
IODCH Version          : 23664
CPU Speed              : 552 MHz
Core Cell              : cab0,cell0
Core Cell Alternate [1]: cab0,cell0
Core Cell Alternate [2]: cab0,cell2

....

                                 Core Connected  Par
Hardware Location   Usage        IO   To         Num
=================== ============ ==== ========== ===
cab0,bay0,chassis1  active       yes  cab0,cell0 0
cab0,bay1,chassis3  active       yes  cab0,cell2 0

#

Modify the nPartition core cell choices using the parmodify -p# -r#... command.
You can modify the core cell choices for the local nPartition or any remote nPartition in the server complex.
Use the following command: parmodify -p# -r# -r#...
Specify the nPartition number (-p#) and the cell ID (-r#) for all cells you wish to designate as core cell choices.
# parmodify -p0 -r2 -r0 Command succeeded. #
The order in which you list the cells is the order in which the nPartition core cell choices are established; the first cell listed is the first preferred core cell (choice 1), and the subsequent cells are lower-priority core cell choices (choices 2 through 4, if specified).

Procedure 6-23 Setting Core Cell Choices (Partition Manager)

You can set core cell choices by using Partition Manager.

When using Partition Manager Version 1.0, select the nPartition to configure, select the PartitionModify Partition action, and use the Core Cell Choices tab.

When using Partition Manager Version 2.0, select the nPartition to configure, select the nPartitionModify nPartition action, select the Set Cell Options tab, and use the Core Cell Choice column to set priorities.

Access Partition Manager.
For details on accessing Partition Manager or other tools, see “Tools for Configuring nPartitions”.
Select the nPartition whose core cell choices you want to configure.
Initiate the nPartition modify action.
If using Partition Manager Version 1.0, the PartitionModify Partition action.
If using Partition Manager Version 2.0, select the nPartitionModify nPartition action.
Access the Partition Manager area for setting core cell choices and then make any changes to the core choices for the nPartition.
From Partition Manager Version 1.0, select the Core Cell Choices tab. Highlight the cell whose core cell choice you want to configure, select the desired choice priority (1st, 2nd, none, etc.) from the Core Cell Choice pop-up list, and click the Modify button to modify the priority.
From Partition Manager Version 2.0, select Set Cell Options tab, and use the Core Cell Choice column to set priorities.
After changing attribute values for all the cells you plan to modify, click the OK button.
Review all information presented in the Notes and Warnings, the Summary of Changes, and the HA Checks tabs.
Either cancel or proceed with changing the core cell choices.
Click the Cancel button to cancel the changes.
To proceed with the core cell changes, click the Finish button or click the OK button.
Exit Partition Manager.
From Partition Manager Version 1.0, select the FileExit action.
From Partition Manager Version 2.0, select Log off parmgr or exit the Web browser when finished.

Setting nPartition Core Cell Choices

Technical documentation

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