Procedures for Managing Partitions

GSP

The following procedure creates a Genesis Partition on an HP Superdome server.

As a result of this procedure, all existing partitions are destroyed and are replaced with a single, one-cell partition (the Genesis Partition).

You can revert to the previous partition configuration, if any existed before you created the Genesis Partition. For details see “Restoring a Complex Profile”.

1. Save all current partition configuration details, if any partitions are configured in the complex.

   Saving the current partition information provides you the details you would need to re-create all partitions as they currently exist.

   Use the parstatus command (or an equivalent parmgr procedure) to save configuration details about each partition.

   For each partition, use the parstatus -Vp# command to display detailed information. You can gather this information from any partition in the system.

2. Determine which cell will be configured as the Genesis Partition.

   The cell must be connected to an I/O chassis. The I/O chassis must have a core I/O card installed, and must have a bootable disk (or a DVD-ROM drive for install media, and a disk onto which HP-UX can be installed).

3. Ensure that all partitions within the complex are in a ready-for-reconfig state.

   If a partition is running HP-UX, you can shut down the partition to a ready-for-reconfig state by using the shutdown -R- H command.

   Or you can put the partition into a ready-for-reconfig state using the BCH interface's RECONFIGRESET command or using the GSP command menu's RR command.

4. Log in to the Superdome server's Guardian Service Processor (GSP).

   Log in as a user with Administrator privileges, which are required for creating a Genesis Partition.

5. Enter the GSP command menu.

   From the GSP main menu, enter CM to access the command menu.

6. Issue the CC command, select Genesis Complex Profile, and specify the cabinet and cell slot for the cell that will comprise the Genesis Partition.

7. Confirm that the Genesis Partition was successfully created.

   If the Genesis Partition is successfully created, the CC command reports that the "complex profile will be modified".

   When the Genesis Partition is created, it is in a boot-is-blocked state, so must be booted manually.

8. Issue the BO command to boot the Genesis Partition. This boots the partition to the Boot Console Handler (BCH) interface.

9. Configure the partition as appropriate and necessary.

GSP

The following procedure restores the prior complex configuration that existed before you made your last partition configuration change.

1. Ensure that all partitions within the complex are in a ready-for-reconfig state.

   You can put the partition into a ready-for-reconfig state by using the shutdown -R -H command, the BCH interface's RECONFIGRESET command, or using the GSP command menu's RR command.

2. Log in to the Superdome server's Guardian Service Processor (GSP).

   Log in as a user with Administrator privileges, which are required for restoring the previous complex profile configuration.

3. Enter the GSP command menu.

   From the GSP main menu, enter CM to access the command menu.

4. Issue the CC command, select Last Complex Profile, and confirm that you want to modify the complex profile configuration.

5. Confirm that the partition cell assignments are what you intended to establish.

   Use the GSP command menu's CP command to display the current complex profile configuration.

   If the partition cell assignments are not what you intended—that is, if you prefer the partition configuration you had before you restored the existing partition configuration—you can repeat this procedure to restore the configuration you had before beginning the procedure.

   One level of undo is provided by the GSP command menu's CC command.

   This allows you to undo your last partition change, and undo your undo.

6. Issue the BO command to boot any partitions you want to make active.

   After you use the CC command, all partitions still are in a boot-is-blocked state and thus are inactive partitions. You can use the GSP command menu's BO command to boot the partitions.

BCH

Use this procedure to determine the local partition number from the BCH interface.

1. Access the Boot Console Handler (BCH) interface for the partition, and access the BCH configuration menu.

   Enter CO from the BCH main menu to access the configuration menu. If you are at a BCH menu other than the main menu, enter MA to access the main menu.

2. From the BCH configuration menu, enter the PD command to list the local partition's name and partition number.

HP-UX Commands

The following procedure uses the parstatus HP-UX commands to determine the partition number of the local (current) partition.

1. Log in to HP-UX running on the partition.

2. Issue the parstatus -w command to list the partition number for the local partition.

   The parstatus -P command lists all partitions within the Superdome complex, including the local partition.

HP-UX Commands

The following procedure uses the parstatus, parcreate, and parmodify HP-UX commands to create a new partition on a Superdome server.

This procedure uses parstatus to find available (unassigned) cells, uses parcreate to create a partition using the cells, and uses parmodify to modify the partition's settings and configure it for general use.

One alternative to using the following five-step procedure is to replace steps 2-5 with a single parcreate command.

For example, the commands performed in steps 2-5 could be replaced with the following parcreate command line.

Note that in the above alternative, the -B option is specified, thus causing the partition to be booted immediately.

1. Plan your partition configuration by selecting which cells will comprise the new partition.

   Use the parstatus -AC command to list all unassigned (available) cells in your Superdome complex.

   You can select any of the cells listed to create the new partition; only the cells that are not "absent" are eligible to be assigned.

   Note that HP recommends only specific Superdome partition configurations.

   See “Procedure for Assigning Cells to Partitions” for details on the hardware requirements and related guidelines.

2. After confirming that cells you have chosen would form an HP-supported partition configuration, create a partition using the cells.

   Use the parcreate -c command to create a new partition using the cells you specify.

   Do not specify the -B option, which would immediately boot the newly created partition, thus making it active and preventing you from further modifying it.

   Note that, because you did not specify -B, the partition will be created but it will remain "inactive" until you explicitly boot it (using the GSP command menu's BO command).

   When you create a multiple-cell partition, you should specify the -c option multiple times (once for each cell) issuing a single command line.

   If the partition is successfully created, the parcreate command reports "Partition Created" and reports the partition number ("partition number is...").

   The parcreate command's -c option is as follows:

   -c cell:[cell_type]:[use_on_next_boot]:[failure_usage]

   This option specifies the cell ID (cell) to be assigned to the partition.

   • The only valid cell_type value is:

     base

     Base cell (the default).

   • The valid use_on_next_boot values for cells are:

     y

     Participate in reboot (the default).

     n

     Do not participate in reboot.

   • The only valid failure_usage value is:

     ri

     Reactivate with interleave (the default)

   For details, see the parcreate(1M) manpage or see “parcreate Command”.

3. Modify the partition configuration in order to set the partition name, core cell, core alternate cells, and boot paths.

   Use the parmodify command to modify the partition's configuration.

   If each modification takes place, parmodify reports "Command succeeded".

   You can specify each configuration option on a separate command line, or can combine all options into a single, longer command line.

   For details on the various options for modifying partition settings, see the parmodify(1M) manpage or see “parmodify Command”.

   See also the table of configuration tasks in “Introduction to Partition Tasks”.

4. Confirm the partition's configuration settings.

   Use the parstatus -Vp# command to list details about your newly created and configured partition.

   If any configuration details should be modified, use the parmodify command before booting the partition.

5. Boot your newly created partition.

   Use the GSP command menu's BO command to boot the partition.

Partition Manager

1. Determine which cell boards and I/O Chassis are to be a part of the partition you are creating.

   	NOTE: At least one cell in the partition must have an I/O chassis connected to it that has a core I/O board in I/O chassis slot 0. Without this, the Partition Manager will not let you create the partition.

2. Free up needed resources from other partitions (if necessary).

   If the partition you want to create will use resources that are currently allocated to other partitions, or hardware that has not yet been installed, you will need to make those resources available before continuing with this procedure. If you will be using cells or I/O chassis that are currently in use by another partition in the complex, see “Moving Cells to a Different Partition” and “Moving I/O to a Different Partition” for help on freeing up those resources.

3. Run the Partition Manager (parmgr).

   The Partition Manager can be run from:

   • an HP-UX command line

   • a Web browser

   • the System Administration Manager utility (SAM)

   .For details see “How to Start The Partition Manager”.

   	TIP: The Partition Manager can be started from the HP-UX command line with a special option (-t create) to go directly to the screen for creating a new partition. The parmgr(1M) manpage has complete details on parmgr options. /opt/parmgr/bin/parmgr -t create

4. Select Create Partition... from the Partition menu.

5. The Create Partition task wizard will, in seven stages, guide you through the process of creating the new partition:

   1. Naming (identifying) the partition.

   2. Selecting the cells for the partition.

   3. Setting the attributes for the cells you select in Stage 2.

   4. Setting which cells can be core cells and in which order they should be tried when the partition boots.

   5. Specifying whether or not to immediately (automatically) boot the partition after it is created.

   6. Verifying all of the settings for the partition before actually creating the partition.

   7. Create the partition.

   After completing each stage, use the Next > button to proceed to the next stage. Until you press the Finish button in Stage 7 you can use the < Back button to return to previous stages and change incorrect settings.

   As you traverse the stages here are some important things to remember:

   Stage 1: Name the Partition. Partition names have the following characteristics:

   • Can contain from 1 to 64 characters.

   • Valid characters are: A-Z, a-z, 0-9, hyphen (-), and space ( ).

   • Names do not have to be unique. They are labels to help you identify the partitions using terms meaningful to your operation. The operating system and the Partition Manager use partition numbers to uniquely identify partitions.

   Stage 2: Select Cells. Using the <--Add--- and -Remove-> buttons, adjust the two lists so that the Assign to the Partition list contains only the cells that you want to be part of the new partition.

   Stage 3: Set Cell Attributes. Specify each cell's “Failure Usage”.

   Cells can be included in a partition for several reasons, most notably:

   • Performance

   • Redundancy (High Availability)

   Cells can operate in two modes: normal mode and failure mode. In normal mode all of the processors and memory in a cell are operating normally, and participating in the partition's operations. However, if a processor or memory DIMM fails during the initialization of a cell (at boot time or power-on) the cell is placed in failure mode. For performance reasons, it is not always desirable to have cells in a partition with differing amounts of memory or processors; that is, it is sometimes better to have a cell not participate in a partition unless it is 100% functional.

   What you are configuring in this step is what happens when a cell in this partition is in failure mode. You can configure this for each cell in the partition. Your choices are:

   • Activate the cell (with whatever processors and memory are still working).

   • Do not activate the cell (unless all of its processors and all of its memory DIMMS are working).

   Stage 4: Select Core Cell Choices. The cell that is actually used to boot the system is known as the core cell.

   Any cell that is attached to an I/O chassis containing core I/O can qualify as the core cell. If the partition contains more than one such cell, you need to specify the order of preference for core cell; PDC (Processor Dependent Code) will (if possible) select the core cell on this basis during the boot process. The cell with the I/O chassis attached to it that contains your primary boot device is the one to designate as the first choice. The Partition Manager will select an appropriate default, and it is usually okay to accept what it offers.

   If you have alternate boot devices (attached to I/O chassis attached to other cells), you can specify the order in which they will be tried.

   Stage 5: Initial Boot Options. Specify whether or not you want to have the new partition automatically booted immediately after it is created.

   Stage 6: Verify the Partition Settings. At this point, the Partition Manager will show you a summary of the resources and settings that will define your new partition. If anything needs changing, use the < Back button (multiple times if necessary) to return to the appropriate screen to make the adjustment, or Cancel to abort the whole task and start over.

   Be sure to verify the information on each of the panels

   • General

   • Cells

   • CPUs / Memory

   • I/O Chassis

   • HA Checks

   to be sure that everything looks okay. If it does, proceed to the final stage of the partition definition process.

   Stage 7: Create the Partition. 

   Once you have verified that all of the settings are correct, carefully read the instructions on the final screen before clicking the Finish button to actually create your new partition.

   	CAUTION: This is your final chance to abort the operation. Once you click Finish, the partition will actually be created on your Superdome complex.

HP-UX Commands

The following procedure removes a partition using HP-UX commands.

1. List all partitions, and check the status for the partition you plan to remove.

   Use parstatus -P to list the status for all partitions.

   You can only delete the local partition and inactive remote partitions. If you are planning to remove a remote partition, check to see whether the partition is inactive.

2. If you plan to remove a remote partition that currently is active, then put the partition into a ready-for-reconfig state.

   If a partition is running HP-UX, you can shut down the partition to a ready-for-reconfig state by using the shutdown -R -H command.

   You also can put the partition into a ready-for-reconfig state using the BCH interface's RECONFIGRESET command or using the GSP command menu's RR command.

   See Chapter 5 for details on resetting partitions.

3. Save all current configuration details about the partition you plan to remove.

   Use the parstatus -V -p# command to display all current configuration information related to the partition you plan to remove.

   Save this information, as you can use it to manually recreate the partition if necessary.

4. Remove the partition.

   There are two possible ways to remove a partition: removing the local partition and removing an inactive remote partition.

   • To remove an inactive remote partition perform the following steps.

     1. Issue the parremove -p# command to remove the inactive remote partition.

        # parremove -p1

     2. Issue the parstatus -P command to confirm that the partition was removed.

        If the partition was removed, it no longer is listed in the parstatus command's output.

   • To remove the local partition (the partition on which you currently are issuing commands) perform the following steps.

     1. Shut down all applications and warn users. Follow the same procedures you would use if you were to reboot the partition.

     2. Issue the parremove -F -p# command, which initiates the complex profile revisions that will take place when the partition is removed.

        When using parremove to remove the local partition, you must specify both the -p# option (to specify the local partition number) and the -F option (to force-remove the local partition).

        Note that the local partition still remains active following the parremove command.

        However, the partition reconfiguration (its deletion) is pending and you should proceed with the next step as quickly as possible.

     3. Reboot the partition for reconfiguration (reboot-for-reconfig).

     Use the shutdown -R command.

     This shuts down the partition and reboots all cells so that the pending configuration changes occur and the partition is deleted.

     Note that the reboot -r and the shutdown -r commands will not properly perform the reconfiguration; specify the -R option.

     See Chapter 5 for more details on resetting partitions.

   After you complete this step, the partition has been deleted and the cells (and associated I/O chassis) that used to be assigned to the partition now are unassigned and are available for other use.

   Partition Manager

   1. Determine which partition you want to remove, and prepare it for removal.

      1. If necessary, shut down any applications that are running in the partition

      2. (optional) If necessary, shut down the operating system that is running in the partition. This is good practice, but parmgr will shut down HP-UX for you if you have not previously done this.

         	NOTE: If you will be running the Partition Manager in the partition that you are removing, you cannot shut down HP-UX or you will not be able to run the Partition Manager. Therefore, proceed directly to the next step.

   2. Run the Partition Manager (parmgr).

      The Partition Manager can be run from an HP-UX command line, from a Web browser, or from the HP-UX System Administration Manager (SAM). For details see “How to Start The Partition Manager”.

   3. On the left-hand side of the Partition Manager's primary display window, highlight the entry for the partition that you want to remove.

   4. From the Partition menu, select Delete Partition. Using the confirmation requestor that appears, verify that you are about to remove the correct partition.

      	NOTE: If HP-UX is still running on the partition that you are trying to remove, the Partition Manager will prompt you to shut it down before showing the confirmation box described above.

      Once you have confirmed that it is okay to remove the partition, the Partition Manager will do so and return you to the complex level screen. The resources formerly consumed by the partition you have just removed will be returned to the “available resources” pool.

BCH

This procedure checks and sets the local partition's name using the BCH menu's PD command, which is available from the BCH configuration menu.

1. Log in to the Guardian Service Processor (GSP) for the Superdome server where the partition resides.

2. Access the partition's console.

   From the GSP main menu, enter CO to access the console menu and select the partition.

   If necessary, type ^ecf (Control-e c f) to get write access for the console.

   Note that if the partition is booted to HP-UX, you should instead use the HP-UX command method of modifying the partition name.

3. Access the BCH interface's configuration menu.

   From the main menu, enter CO to access the configuration menu.

   If at another menu, enter MA to access the main menu, then CO.

4. At the BCH configuration menu, use the PD command to check and set the local partition's name.

   Enter PD to check the current name, or enter PD New Name to set the partition's name to the new name. No quotation marks are needed when specifying the new name.

HP-UX Commands

This procedure checks and sets the partition name for the local partition or for remote partitions using the parmodify command.

1. List the current partition states and names using the parstatus -P command.

   This shows all partitions, their current status (active or inactive) and their partition numbers and partition names.

2. Using the parmodify command, set the partition name for either the local partition or for a remote partition.

   If the partition is successfully renamed, parmodify reports that the "Command succeeded".

   If the partition name contains blank spaces then quotation marks must surround the name.

Partition Manager

1. Run the Partition Manager (parmgr).

   The Partition Manager can be run from:

   • an HP-UX command line

   • a Web browser

   • the System Administration Manager utility (SAM)

   For details see “How to Start The Partition Manager”.

2. On the left-hand side of the Partition Manager's primary display window, highlight the entry for the partition that you want to remove.

3. From the Partition menu, select Modify Partition.

   The Modify Partition window will be displayed. The General panel is the place to enter the new partition name.

4. In the Partition Name field of the General panel, enter the new name and click the Ok button.

   A confirmation window will be displayed, asking you to confirm the change to the partition. Though changing the name of a partition is fairly benign, other changes that you can make to a partition can have serious consequences to your complex. This is the reason for this confirmation request.

5. If you have only changed the name of the partition, it is safe to click the Ok button in the confirmation window to complete the name change.

   A final pop-up window (a confirmation message) will appear, letting you know that you have been successful in changing the name. Click on its Ok button to dismiss this window and return to the complex-level View (parmgr's main display).

BCH

This procedure modifies boot path variables using the BCH menu.

1. Access the Boot Console Handler (BCH) main menu for the partition.

2. Use the PA command to list current PRI, HAA, and ALT settings.

   Enter PA with no arguments to list all paths.

3. Specify PA with arguments to set the boot path you desire to modify. For example, PA PRI 4/0/1/0/0.6 sets the PRI boot path variable to 4/0/1/0/0.6.

HP-UX Commands

This procedure modifies a partition's boot path variables using the parmodify HP-UX command.

1. Issue the parstatus -Vp# command to list details, including boot paths, for the partition.

2. If the partition is local, or if it is an inactive remote partition, use the parmodify command to modify the desired boot path.

   Issue parmodify -p# -bpri to modify the PRI boot path.

   Use the parmodify -s option for the HAA path, and -t for the ALT path.

   See “parmodify Command” for details.

HP-UX Commands

This procedure adds cells to a partition using HP-UX commands.

1. Use the parstatus -AC command to list all available (unassigned) cells in the complex.

2. Select the eligible cell from the list, based on your previous planning.

3. Modify the partition.

   Use the parmodify -p# -a#... command to add the cell. If modifying a remote partition, you can specify the -B option as well.

   See “parmodify Command” for details on the options you must specify (-a#:base:use-on-next-boot:ri) when adding the cell.

4. Perform a reboot-for-reconfig on the modified partition, if needed.

   If you added the cell to an active (local or remote) partition, you must use the shutdown -R or reboot -R command to reboot the partition. You must perform this step to add the cell to the partition. If you added the cell to an inactive remote partition, and you did not specify -B, then use the GSP command menu's BO command to boot the partition.

Partition Manager

1. Through careful planning, determine which cell(s) you want to add to the partition.

2. Run the Partition Manager (parmgr).

   The Partition Manager can be run from:

   • an HP-UX command line

   • a Web browser

   • the System Administration Manager utility (SAM)

   For details see “How to Start The Partition Manager”.

3. On the left-hand-side of the Partition Manager's primary display window, highlight the entry for the partition that you want to add cells to. This will display (on the right-hand side of the window) a list of the cells and I/O chassis currently associated with the partition.

4. From the Partition View screen, select Modify Partition from the Partition menu. This will bring up a new window showing two lists:

   On the left

   On the left, a list of cells currently in the partition

   On the right

   On the right, a list of available cells (cells that can be added to the partition)

5. Highlight the available cells that you want to add to the partition (multiple cells can be selected by holding down the CTRL button while selecting the second and subsequent cells), then click the <--Add--- button between the two lists. When the list on the left-hand side contains all of the cells you want to include in the partition proceed to the next step.

6. Before clicking on the OK button, make any desired changes to the settings for the cells that are now to be a part of the partition:

   • Do you want to change which cell in the partition will be the primary core cell?

   • Do you want any of the new cells in the partition to be alternate core cells?

   • Do you want to change the failure usage for any of the cells in the partition?

   • Do you want to change which cells will be used by the partition the next time it is booted?

   All of these things can be set from the Modify Partition window before you proceed. For help in changing any of these items, see “Setting and Checking a Partition's Core Cell Choices”.

7. When you have completed any changes you want to make in the settings for the cells in this partition, click on the OK button to complete the partition modification.

   A confirmation window will confirm that you have successfully (almost) added the cells. See the next step for important information.

8. As soon as possible reboot the partition using the special reboot-for-reconfiguration option:

   	NOTE: Your changes will not take effect until you reboot the partition with the special reboot-for-reconfiguration option. It is not necessary (when adding a cell to a partition) to immediately reboot, but the complex profile will be locked, preventing further changes until this special reboot occurs. For more information on rebooting a partition for reconfiguration, see “Performing a Reboot-for-Reconfig for a Partition”.

HP-UX Commands

This procedure describes how to remove cells from a partition using HP-UX commands.

1. List the current partition assignments for all cells.

   Use the parstatus -C command to list all cells in the complex, and check the partition assignment for cell that you want to remove.

   Determine the partition number of the partition to which the cell is assigned.

2. List the current status for the partition.

   Use the parstatus -p# command to list the partition's status (active or inactive); specify the partition number for the cell's partition.

   The partition to which the cell is assigned must be inactive, or the cell must be assigned to the local cell.

3. Remove the cell from the partition to which it is assigned.

   If the cell is the last cell in the partition, you must instead use the parremove command to remove the partition. (See “parremove Command” for details.)

   To remove the cell from its partition, issue the parmodify command.

   • If removing from the local partition, specify the -B option.

     Specify parmodify -p# -d# -B and specify the partition number (-p#) and the cell ID for the cell to be deleted (-d#).

   • If removing from an inactive remote partition, you need not specify -B unless you want to reboot the partition immediately.

     Specify parmodify -p# -d# and specify the partition number (-p#) and the cell ID for the cell to be deleted (-d#).

     Specify -B when removing the remote partition's cell only if you want to reboot-for-reconfig the partition immediately after the cell is removed.

4. As necessary, perform a reboot-for-reconfiguration on the partition being modified.

   On the local partition, you must issue the shutdown -R command or the reboot -R command to reboot the partition and perform the partition reconfiguration (deleting the cell).

   On the remote partition, if you did not specify -B, then use the GSP command menu's BO command to boot the partition.

Partition Manager

1. Determine which cell(s) you want to remove from the partition.

2. Run the Partition Manager (parmgr).

   The Partition Manager can be run from:

   • an HP-UX command line

   • a Web browser

   • the System Administration Manager utility (SAM)

   For details see “How to Start The Partition Manager”.

3. From the left-hand-side of the Partition Manager's primary display window, highlight the entry for the partition that you want to remove cells from. This will open up the Partition View showing the cells and I/O chassis currently associated with the partition.

4. From the Partition View screen, select Modify Partition from the Partition menu. This will bring up a new window showing two lists:

   On the left

   On the left, a list of cells currently in the partition

   On the right

   On the right, a list of available cells (cells that can be added to the partition)

5. In the list of cells currently in the partition highlight the cells that you want to remove from the partition (multiple cells can be selected by holding down the CTRL button while selecting the second and subsequent cells), then click the --Remove--> button between the two lists. When the list on the left-hand side contains only the cells you want to remain in the partition proceed to the next step.

6. Before clicking on the OK button, make any desired changes to the settings for the remaining cells in the partition:

   • Do you want to change which cell in the partition will be the core cell?

   • Do you want to make any changes (for any of the remaining cells in the partition) as to which ones should be alternate core cells?

   • Do you want to change the failure usage for any of the cells remaining in the partition?

   • Do you want to change which cells will be used by the partition the next time it is booted?

   All of these things can be set from the Modify Partition window before you proceed. For help in changing any of these items, see “Setting and Checking a Partition's Core Cell Choices”.

7. When you have completed any changes you want to make in the settings for the cells in this partition, click on the OK button to complete the partition modification.

   	NOTE: If the cell(s) that you are attempting to remove are active cells in the local partition, you will be forced to immediately reboot the local partition using the special reboot-for-reconfiguration option. Do not click on the OK button unless you are sure it is okay to reboot the local partition now! If you are attempting to remove a cell that is an active cell in the local partition, a warning will be displayed to alert you.

8. Immediately reboot the partition using the reboot-for-reconfiguration option: issue the shutdown -R or reboot -R command.

BCH

This procedure uses the BCH interface to set the core cell and core alternate cell settings for a partition.

1. Access the BCH menu for the partition whose core cell choices you wish to set.

2. Access the BCH configuration menu for the partition.

   From the BCH main menu, enter CO to enter the configuration menu.

3. Issue the COC command to check current core cell preferences.

   Entering COC with no arguments lists all core cell preferences.

4. Issue the COC command, with arguments, to set or change core cell preferences.

   For example, COC 1 4 sets the first core alternate preference to be cell ID 4.

   Likewise, COC 0 2 sets the core cell preference to be 2.

5. If you have changed the setting for the core cell, and you want the cell you have specified to immediately become active as the core cell, reboot the partition: issue the BCH menu's REBOOT command.

   This step is optional. If you do not perform this step, the active core cell will change (if you've modified the setting) the next time the partition is rebooted.

HP-UX Commands

This procedure uses HP-UX commands to set the core cell and core alternate cell preferences for a partition.

1. Check the current core cell settings and core cell use.

   Use the parstatus -V -p# command to list detailed partition status, including the current active core cell, and the alternate core cell settings.

   The active (current) core cell is listed by parstatus as the "Core Cell".

   The core cell preferences are listed by parstatus as "Core Cell Alternates". The "Core Cell Alternate" settings that parstatus lists, if any, indicate the preferred core cell as "1" and the core alternates, if any, as "2" through "4".

2. Modify the partition's core cell settings.

   You can modify the local partition or any remote partition in the Superdome complex.

   Use the parmodify command: parmodify -p# -r# -r#...

   Specify the partition number (-p#) and the cell ID (-r#) for all cells you wish to designate as core cell preferences.

   The order in which you list the cells is the order in which the partition's core cell preferences are established; the first cell listed is the first preferred core cell (preference 1), and the subsequent cells are alternate core cells (preferences 2 through 4, if specified).

3. If you wish to immediately change the active core cell, boot or reboot the partition whose core cell choices you have changed.

   If you have modified the local partition, issue the reboot or shutdown command with the -r option to boot the partition with the new core cell preference serving as the active core cell. (You do not need to perform a reboot-for-reconfig of the partition.)

   If you have modified an inactive remote partition, use the GSP command menu's BO command to boot the remote partition; the designated core cell preferences will be used to select the active core cell.

Partition Manager

To modify the core cell settings for a partition using the Partition Manager:

1. Run the Partition Manager (parmgr).

   The Partition Manager can be run from:

   • an HP-UX command line

   • a Web browser

   • the System Administration Manager utility (SAM)

   For details see “How to Start The Partition Manager”.

2. On the left-hand side of the Partition Manager's primary display window, highlight the entry for the partition you want to modify.

   The right-hand side of the display will change to show the resources currently assigned to the partition.

3. From the Partition menu, select Modify Partition.

4. Adjust the core cell settings in the Modify Partition window:

   1. The Core Cell Choices panel shows all the cells that are attached to an I/O chassis with a core I/O cards in slot 0. If more than one cell is listed here, you can change the order in which they are tried when the partition boots.

   2. To adjust the order in which the cells are tried, select the entry for the cell that you want tried first. Then, choose 1st from the drop down menu labeled Core Cell Choice: and click the Modify button.

      If this cell was not already the first core cell choice, the list will be updated to reflect your change, and the other cells renumbered.

   3. Repeat the previous step for your 2nd and subsequent core cell choices. When the list reflects the order you want, click the OK button in the Modify Partition window to submit your changes.

BCH

You can list and set a cell's use-on-next-boot setting by using the BCH interface for the cell's partition.

Use the following procedure to modify the use-on-next-boot settings from BCH. Note that you cannot use the BCH interface to list or modify cell failure-usage settings. Instead use HP-UX commands or Partition Manager.

1. Log in to the Superdome complex's GSP, access the partition's console, and access the BCH main menu.

   From the partition console you access the partition's BCH interface. If the partition is not at the BCH interface you must either boot the partition or shut down HP-UX to return to the BCH interface.

2. Access the BCH configuration menu by entering CO from the BCH main menu.

   If you are at a BCH menu other than the main menu, enter MA to return to the BCH interface's main menu and then access the BCH configuration menu.

3. From the BCH configuration menu, use the CELLCONFIG command to list or set each cell's use-on-next-boot setting.

   To list the use-on-next-boot settings for all cells in the partition, issue the CELLCONFIG command with no arguments.

   To change the use-on-next-boot setting for a cell, issue the CELLCONFIG command: CELLCONFIG cell [ON|OFF]

   For example, CELLCONFIG 6 OFF sets the use-on-next-boot setting for cell 6 to OFF. This causes the cell to not be used (not rendezvous) in the partition the next time the partition boots.

4. Reboot the partition to use the cells' new use-on-next-boot settings.

   If you have changed any cell use-on-next-boot settings for the partition, you should reboot the partition in either of two ways.

   Do either of the following.

   • Use the BCH interface's RECONFIGRESET command to put the partition in a ready-for-reconfig state, then use the GSP command menu's BO command to boot the partition.

     If you have changed any cell from OFF ("n", do not use on next boot) to ON ("y", use the cell on next boot) then you must perform these two tasks; this resets and reconfigures the partition and boots it.

   • Use the BCH interface's REBOOT command to perform a reboot.

     If you have only changed cell configurations from ON to OFF perform a reboot. Any cells set to not be used will still be assigned to the partition but will not be used (will not rendezvous) in the partition.

HP-UX

You can use HP-UX commands to list and configure the use-on-next-boot and failure-usage settings for cells assigned to any partitions within the Superdome complex.

1. Log in to HP-UX running on the partition.

   You can log in to HP-UX on the partition either by directly connecting with telnet or rlogin, or by logging in to its complex's GSP and accessing the partition's console. Connecting through the GSP allows you to maintain partition console access after HP-UX has shut down.

2. From the HP-UX command line, use the parstatus command to list the use-on-next-boot and failure-usage attribute settings for cells in the Superdome complex.

   Use either parstatus -C or parstatus -V -c# to list the cell attribute settings. The following examples and text describe both these commands.

   You can list and modify any cell's settings from HP-UX running on any partition in the Superdome complex. These settings may be reported as follows.

   • A use-on-next-boot value of "yes" means the cell will be active as part of the partition the next time the partition boots.

     "Yes" is equivalent to a BCH cell configuration value of ON and "no" is equivalent to OFF.

   • A failure-usage setting of "activate" indicates that the cell is set to reactivate with interleave in the event of any failure during the cell's self test.

   Use the parstatus -C command to list the use-on-next-boot setting for all cells, which is shown in the "Use On Next Boot" column.

   To list a specific cell's failure-usage and use-on-next boot settings, issue the parstatus -V -c# command and specify the cell number.

3. To modify a cell's use-on-next-boot and failure-usage attribute settings, use the parmodify command and specify the cell's new settings.

   Specify both the -p (partition number) and -m (modify cell) options when using parmodify. The following example modifies cell 2 to not be used the next time its partition (partition number 0) boots.

   The parmodify command's -m option is as follows:

   -m cell:[cell_type]:[use_on_next_boot]:[failure_usage]

   This option specifies the cell ID (cell) whose settings are modified using the following arguments.

   • The only valid cell_type value is base (base cell).

   • The valid use_on_next_boot values for cells are:

     y

     Participate in reboot (the default).

     n

     Do not participate in reboot.

   • The only valid failure_usage value for cells is ri (reactivate and interleave).

   For details, see the parmodify(1M) manpage or see “parmodify Command”.

4. If you have modified a cell's attribute settings, for the settings to be used you must reboot the partition to which the cell is assigned.

   Rebooting the cell's partition allows the partition to use each cell's new attribute settings.

   If a cell's use-on-next-boot setting is changed from "n" (do not use) to "y" (use), you must perform a reboot-for-reconfig of the cell's partition by using the shutdown -R or reboot -R command.

   Otherwise, if the cell use-on-next-boot settings are only changed from "y" to "n" then you can perform a standard reboot using the shutdown -r or reboot -r command.

Partition Manager

To modify the attribute settings for a cell using the Partition Manager:

1. Run the Partition Manager (parmgr).

   The Partition Manager can be run from:

   • an HP-UX command line

   • a Web browser

   • the System Administration Manager utility (SAM)

   For details see “How to Start The Partition Manager”.

2. On the left-hand side of the Partition Manager's primary display window, highlight the entry for the partition you want to modify.

   The right-hand side of the display will change to show the resources currently assigned to the partition.

3. From the Partition menu, select Modify Partition.

   The Change Cell Attributes panel allows you to change the Use on Next Boot settings for the cells in the selected partition.

4. Adjust the cell attribute settings in the Modify Partition window:

   1. In the Change Cell Attributes panel of the Modify Partition window, a list of cells in the partition will be displayed, showing each cell's current settings for Use on Next Boot and “Failure Usage”.

   2. To change whether or not a cell will be used the next time the selected partition is booted, highlight the entry for the cell for which you want to modify the settings for and click the Modify Cell(s) ... button.

      The Modify Cell Attributes window will be displayed allowing you to modify the cell's Use on Next Boot setting.

   3. Using the drop down menu in the Modify Cell Attributes window, specify:

      • Whether or not you want the cell to be used the next time the partition is booted.

      After setting the Use on Next Boot attribute, click on the OK button in the Modify Cell Attributes window to complete the selection.

   4. Repeat the preceding step for all cells that you want to modify. When the list of cells reflects your desired settings, click on the OK button in the Modify Partition window to register your changes and return to the Partition Manager's primary display window.

      	NOTE: Your changes to the partition will not take effect until the next time the partition is rebooted.

Procedure

Use the following high-level procedure to move a cell to a different partition. You can perform these steps using either HP-UX commands or Partition Manager (parmgr).

1. Use the procedure “Removing Cells from a Partition” to remove the cell(s) that you want to move to the other partition.

   In this step you perform a reboot-for-reconfig of the partition that initially contains the desired cell(s). This returns the cells to the free cell list so that they are available in the next step.

2. Use the procedure “Adding Cells to a Partition” to add the cell(s) you made available in step 1 to the partition (that will be their new location).

   This step requires that you perform a reboot-for-reconfig of the partition to which the cells are being added. This reboot-for-reconfig makes the cells available for use in the new location.