Technical data

Virtual Partitions (vPars) Management on nPartitions
Dynamic vPars and Static vPars
HP System Partitions Guide: Administration for nPartitions, rev 5.1 461
Dynamic vPars and Static vPars
Each Virtual Partition has a static/dynamic attribute that determines
whether resource changes can be made to the vPar.
A static vPar cannot have any modifications made to its resource
profile. This means that the Virtual Partition’s processor, memory, and
I/O characteristics and assignments cannot be changed, even if the vPar
is not running (in a “Down” state).
A dynamic vPar can have its resource profile changed through the use
of the vparmodify command.
To toggle between the static and dynamic vPar attribute settings, use
the vparmodify command’s -S option:
vparmodify -p vpname -S static
vparmodify -p vpname -S dynamic
You also can toggle this attribute between dynamic and static in a
single command. For example, the following command sets the vPar
named “Shad” to be dynamic, then modifies its total number of CPUs,
then sets the vPar to be static.
# vparmodify -p Shad -S dynamic -m cpu::3 -S static
See the vparmodify (1M) manpage for details.
Note that some resource changes require that the vPar not only be
dynamic but also be in a “Down” state.
For example, changing I/O attributes or adding and removing processors
may be possible while a dynamic vPar is running, but changing memory
or I/O assignments requires a vPar to be both dynamic and down.
To check vPar static/dynamic attribute settings, use vparstatus.
# vparstatus
[Virtual Partition]
Boot
Virtual Partition Name State Attributes Kernel Path Opts
============================== ===== ========== ========================= =====
Shad Down Dyn,Manl /stand/vmunix
Mesh Up Stat,Manl /stand/vmunix boot
[Virtual Partition Resource Summary]
CPU Num Memory (MB)