HP-UX vPars and Integrity VM V6.3 Administrator Guide

Now, we can use the vparmodify command again to delete 4 CPUs from the online vPar.
# vparmodify -p 1 -d cpu::4
vparmodify: A CPU OLAD operation has been initiated for this vPar.
Please check vparstatus output or syslog for completion status.
# vparstatus -p 1 -v
[Virtual Partition Details]
Number: 1
Name: vPar0001
RunState: UP
State: Active
…
[CPU OL* Details]
Operation : CPU change
CPU Count: 1
Status: PASS
…
As seen in the output, the vPar vPar0001 is running with one CPU.
13.17 Dynamic addition of I/O devices to vPar and Integrity VM guests
Starting with HP-UX vPars and Integrity VM V6.3, you can add I/O devices to running instances
of both vPar and Integrity VM guests. It is a functionality that is referred as Dynamic I/O.
NOTE: Dynamic I/O must not be confused with the Direct I/O functionality using which Ethernet
network adapters are directly presented to vPar and Integrity VM guests.
Dynamic I/O functionality is conceptually similar to online addition of I/O devices using olrad(1M)
on HP Integrity platforms with OLARD capability. Dynamic I/O, however, is available on all HP
Integrity platforms supported by HP-UX vPars and Integrity VM V6.3. All types of I/O devices
supported for usage within vPar and Integrity VM guests can be added dynamically.
13.17.1 Operational details
hpvmmodify(1M) or vparmodify(1M) may be used for dynamically adding I/O devices to running
instances of both vPar and Integrity VM guests; the -a option is used along with the appropriate
resource specification as given in hpvmresources(5). The resource specification may also include
the bus and slot where the new device must be placed. The -V option for hpvmstatus(1M) may be
used to display all used and reserved PCI I/O device slots for the specified vPar or Integrity VM
guest. This information may be used to select a free slot where an I/O device that is dynamically
added must be placed.
Ensure that when hpvmmodify(1M) or vparmodify(1M) is used to add a device:
• Only one -a operation may be specified at a time.
and
• No other resource modification operations is combined with the -a option.
When they are invoked to add a device dynamically both hpvmmodify(1M) and vparmodify(1M)
return immediately after initiating the operation. The actual operation proceeds to completion in
the background. The -V option to hpvmstatus(1M) may be used to display the status of the last
Dynamic I/O addition operation.
Dynamic I/O operations can be run only when the guest configuration is in stable state. It cannot
be run while
13.17 Dynamic addition of I/O devices to vPar and Integrity VM guests 247