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You can remove cells from an nPartition by using any one
of the following procedures: Removing a cell from an nPartition involves unassigning
the cell from the nPartition to which it is assigned and, if necessary, performing
a reboot for reconfig of the nPartition.  |  |  |  |  | NOTE: Adding or removing cells from an nPartition will change
the amount of memory available to the nPartition, possibly significantly.
You should consider how the memory change may affect the amount of swap space
necessary for the nPartition and if needed adjust the swap space size. |  |  |  |  |
When not using remote administration features, you can
remove any cell from the local nPartition and can remove inactive cells from
remote nPartitions in the same server complex. However, at least one core-capable
cell must remain in each nPartition. The remote administration features supported by the Enhanced
nPartition Commands or Partition Manager Version 2.0 also enable you to remove
any cell from any nPartition in an HP Integrity server complex. Still, at
least one core-capable cell must remain in each nPartition. Reboot for Reconfig Guidelines for Removing Cells. In some situations, after removing cells from a modified
nPartition you must immediately perform a reboot for reconfig (HP-UX: shutdown
-R; Windows: shutdown /r; Linux: shutdown
-r time; OpenVMS: @SYS$SYSTEM:SHUTDOWN with
an automatic system reboot). Performing a required reboot for reconfig completes
cell assignment changes and unlocks the Complex Profile for the server. You must immediately perform a reboot for reconfig of an nPartition
when you have removed an active cell from the nPartition. You must immediately perform a reboot for reconfig of an nPartition
when you have removed a cell from an active nPartition and specified the -B option
to the parmodify command. You do not need to perform a reboot for reconfig of an nPartition
when you have removed an inactive cell from an nPartition and did not specify
the -B option to the parmodify command.
In the cases where you must immediately perform a reboot
for reconfig after removing a cell, not doing so will leave the Complex Profile
locked and thus will prevent any other changes to the server complex configuration.
In these cases, the reboot for reconfig is required to complete the cell assignment
changes and permit other changes to occur. Procedure 6-8 Removing Cells from an nPartition (nPartition Commands) From the command line, use the parmodify command
to remove cells from an nPartition. You also can use the parstatus command
to list current nPartition details such as cell assignments. Login to a system
with the nPartition commands installed. If using
remote administration features to modify an nPartition, you can login to any
system with Enhanced nPartition Commands installed. If removing an inactive cell from an nPartition, you can
use local management from any nPartition in the complex. For example, you
can login to HP-UX running on any nPartition in the same server complex. If removing an active cell from an nPartition and not using
remote administration features, you must login to the nPartition from which
the cell is to be removed. Issue the parstatus
-c#... command to list the current nPartition
assignments and status for each cell (-c# where # is
the cell number) that you plan to remove from its assigned nPartition. Specify each cell you plan to remove with a separate -c option.
For example, to list details on cells 0, 1, and 2, issue the parstatus
-c0 -c1 -c2 command. The cells must all be assigned to the same nPartition in
order to remove them using a single procedure. Otherwise, if the cells are
assigned to different nPartitions, you must perform this procedure separately
for each nPartition. Remove the cell
from the nPartition to which it is assigned by using the parmodify
-p# -d#... command. Specify the nPartition (-p# where # is
the nPartition number) and each cell (-d# where # is
the cell number) that you want to remove from the nPartition. If you are performing this task using the Enhanced nPartition
Commands to remotely administer a server, also specify the -u...
-h... options or the -g... -h... options as appropriate. If removing multiple cells from an nPartition, specify
each cell with a separate -d# option
on the same command line (such as: parmodify -p1 -d0 -d2... to
remove cells 0 and 2 from partition number 1). Slightly different procedures are required for removing
active cells and inactive cells. See the following information for details
(“Guidelines for Removing an Active Cell” and “Guidelines for Removing an Inactive Cell”). If at least one of the cells you plan to remove is currently
active, then follow the guidelines for removing active cells. Guidelines for Removing an Active Cell. Specify the -B option to parmodify when
removing an active cell from an nPartition if you want the nPartition to become
active following its reboot for reconfig. For example, the following command removes cell 4 from
partition 0 and the -B option ensures that the nPartition
will be active following its reboot for reconfig. # parmodify -p0 -d4 -B
Cell 4 is active.
Use shutdown -R to shutdown the system to ready for reconfig state.
Command succeeded.
# |
You must perform a reboot for reconfig after you issue
the parmodify command to remove active cell(s) from the
nPartition. (This is covered in the step that follows.) Guidelines for Removing an Inactive Cell. When removing an inactive cell from an nPartition you do
not need to specify the -B option to parmodify and
do not need to perform a reboot for reconfig of the nPartition to which the
cell is assigned. When you use parmodify to remove an
inactive cell, the cell is immediately unassigned from its nPartition. If you specify the -B option when removing
an inactive cell from an inactive nPartition, then the cell is immediately
removed and the modified nPartition is booted past its inactive shutdown for
reconfig state and becomes an active nPartition. For example, the following command removes cell 2 from
partition 0. Because cell 2 is inactive, it is immediately unassigned. # parmodify -p0 -d2
Command succeeded.
# |
As needed, perform
a reboot for reconfig of the nPartition being modified (HP-UX: shutdown
-R; Windows: shutdown /r; Linux: shutdown
-r time; OpenVMS: @SYS$SYSTEM:SHUTDOWN with
an automatic system reboot). You must perform a reboot
for reconfig if you have removed an active cell or have specified the -B option
when modifying an active nPartition. See “Reboot for Reconfig Guidelines for Removing Cells” for
details on when to perform a reboot for reconfig. This reboot for reconfig enables the cell removal to complete
and the Complex Profile to be unlocked. If you have removed an active cell and you did not specify
the -B option to parmodify, then the
nPartition will remain inactive in the shutdown for reconfig state after you
perform the reboot for reconfig. To make the inactive nPartition active, use
the BO (boot) command at the service processor Command
menu.
Procedure 6-9 Removing Cells from an nPartition (Partition Manager) You can remove cells from an nPartition by using Partition
Manager. When using Partition Manager Version 1.0, select an nPartition,
and use the Partition Modify Partition action, Add/Remove Cells tab. When using Partition Manager Version 2.0, select an nPartition,
and use the nPartition Modify nPartition action, Add/Remove Cells tab. Access Partition
Manager. For details on accessing Partition Manager
or other tools, see “Tools for Configuring nPartitions”. Select the nPartition
from which you want to remove cells. Specify for Partition
Manager to remove one or more cells from the nPartition. From
Partition Manager Version 1.0, use the Partition Modify Partition action and select
the Add/Remove Cells tab. To remove cells from the nPartition,
select the cells from the "Cells in the Partition" list and click the Remove button. From Partition Manager Version 2.0, use the nPartition Modify nPartition action and select the Add/Remove Cells tab.
To remove cells from the nPartition, click on the checkbox for the cells so
that no checkmark appears (the checkbox is empty). After specifying
that the cells be removed from the nPartition, click the OK button. Review all information
presented in the Notes and Warnings, the Summary
of Changes, and the HA Checks tabs. Either check
or leave unchecked the option for booting the nPartition after the reconfiguration
occurs. For Partition Manager Version 1.0, this option
is the Automatically boot partition... checkbox. For
Partition Manager Version 2.0, this option is the Boot nPartition
to system firmware... checkbox. If removing an active cell, leaving this option unchecked
(not selected) results in the nPartition being inactive after its reboot for
reconfig occurs. If removing a cell from an inactive nPartition, selecting
this option results in the nPartition becoming active after its reconfiguration
occurs. Either cancel
or proceed with the changes (the removal of cell). Click
the Cancel button to cancel the changes. To proceed with removing the cells, click the Finish button
or click the OK button. As needed, perform
a reboot for reconfig on the modified nPartition (HP-UX: shutdown
-R; Windows: shutdown /r; Linux: shutdown
-r time; OpenVMS: @SYS$SYSTEM:SHUTDOWN with
an automatic system reboot). If you have removed only inactive
cells from an nPartition, then you do not need to perform a reboot for reconfig
of the nPartition. If you have removed any active cells
from the nPartition, then you must perform a reboot for reconfig and will
have seen a detailed message about rebooting from Partition Manager. Issue the reboot for reconfig command. If you did not select the option for automatically booting
the nPartition to system firmware, then the nPartition is inactive (at the
shutdown for reconfig state) after the reboot for reconfig occurs. In this
situation, you can make the nPartition active by using the BO command
at the service processor Command Menu.
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