Installing and Managing HP-UX Virtual Partitions (A.02.01)

Monitor and Shell Commands
Adding and Removing CPU Resources
Chapter 5144
Example • If you have two bound CPUs and want to remove the bound CPU at
hardware path 41 (and do not want to add any unbound CPUs),
delete the hardware path 41, modify min to one, and modify total
number to one:
# vparmodify -p winona2 -d cpu:41 -m cpu:::1 -m cpu::1
NOTE: If you delete only hw_path and leave total as two and leave
min as two, you will still have two bound CPUs.
NOTE When executing any operations relating to bound CPUs (adding,
modifying, or deleting), the target virtual partition must be down.
Migrating an Unbound CPU
After min bound CPUs are assigned to a virtual partition, ( total - min )
CPUs are assigned to the partition as unbound CPUs. Therefore, to
migrate unbound CPUs, specify total such that ( total - min ) is the
number of unbound CPUs assigned to the target partition.
Examples • To create the partition winona2 with two bound CPUs and one
unbound CPU, set total to three and min to two:
# vparcreate -p winona2 -a cpu::3 -a cpu:::2
• To add an unbound CPUto an existingpartition, use the vparmodify
command to either modify the total number of CPUs (-m
cpu:: total ) or add to the total number of CPUs (-acpu:: total ).
For example, to add one unbound CPU to the partition winona2,
which already has three CPUs, two of which are bound, you can
either modify total to four:
winona1# vparmodify -p winona2 -m cpu::4
or add one to total :
winona1# vparmodify -p winona2 -a cpu::1
• To delete one unbound CPU from the partition winona2, which
already has four CPUs:
winona1# vparmodify -p winona2 -m cpu::3
or