HP-UX Virtual Partitions Administrator Guide (includes A.05.08) (5900-1312, March 2011)

Examples
• To set the minimum number of CPUs to 2:
keira1# vparmodify -p keira2 -m cpu:::2
• To set the minimum number of CPUs to 2 and the maximum to 4:
keira1# vparmodify -p keira2 -m cpu:::2:4
CPU: Adding and Deleting by Total
The basic syntax for adding and deleting CPUs is:
-a|d|m cpu::num
where:
-a|d|m specifies adding, deleting, or modifying the total count of CPUs
num specifies the number of CPUs
NOTE: CPU deletion fails when deletion by total and by CLP are given in the same vparmodify
command.
In this situation, the CPU deletion by total fails with the error message “vPar does not own enough
Monitor-assigned CPUs to satisfy the request” although there are enough monitor-assigned CPUs.
Instead, issue separate vparmodify commands to delete by total and delete by CLP.
For example instead of issuing the following command:
# vparmodify -p vpar1 -d cell:3:cpu::2 -d cpu::1
Issue two separate commands to delete by CLP and then by total:
# vparmodify -p vpar1 -d cell:3:cpu::2
# vparmodify -p vpar1 -d cpu::1
NOTE: The virtual partition can be either up or down when using the cpu::num syntax.
When the virtual partition is active, CPUs that were added using the cpu::num syntax can be
deleted only by using either:
• cpu::num syntax (deletion by total), or
• cpu:hw_path syntax (deletion by hardware path)
Deletion by total (cpu::num) is recommended over deletion by hardware path (cpu:hw_path).
Total increases or decreases by num when using the -a or -d options and is set to num when
using the -m option.
vparcreate
With the vparcreate command, you would use the -a option and specify as num the number
of CPUs to allocate to the virtual partition.
If no cpu syntax is given on the vparcreate command line, the default value for total is 1.
Example
• To create the virtual partition keira2 with 3 CPUs, set num to 3:
keira1# vparcreate -p keira2 -a cpu::3 ...
vparmodify
With the vparmodify command, you can use the:
CPU: Adding and Deleting by Total 221