HP-UX Virtual Partitions Administrator's Guide (includes A.05.02)

Chapter 9
nPartition Operations
Reconfiguring the nPartition
305
Reconfiguring the nPartition
You must perform a Reboot-for-Reconfig (RFR) on an nPartition in the following circumstances:
• whenever you add cells to the nPartition
• whenever you need to allow an inactive cell to join the nPartition (such as after changing a cell
use-on-next-boot value from “n” to “y”).
• whenever you remove active cells from the nPartition
When the nPartition reboots from an RFR, variables are written by the HPUX kernel in nPar mode. Some of
these variables contain the most recent information about the cells.
The vpar Monitor reads these variables when it boots. If an RFR of the nPartition has not been performed,
the vpar Monitor does not receive the most recent information about the cells, and an error will occur.
For information on performing a Reboot-for-Reconfig, see “Rebooting and Reconfiguring Conceptual Points” on
page 304 as well as “Reconfiguring an nPartition (Integrity)” on page 305 for Integrity systems, and
“Reconfiguring an nPartition (PA-RISC)” on page 306 for PA-RISC systems.
Reconfiguring an nPartition (Integrity)
NOTE On an Integrity server, the OS kernel in nPars mode needs to write the new CPU mapping
data to certain EFI variables; in order for this to occur properly, a complete reboot in nPars
mode is required after the parmodify operation has taken affect.
From nPars mode:
1. Perform the changes as you would in a non-vPars environment. For example, if we want to add cell 6 to
partition 0:
keira# parmodify -p0 -a 6:base:y:ri
In order to activate any cell that has been newly added,reboot the partition with the -R option.
Command succeeded.
2. Perform a Reboot-for-Reconfig (RFR) from a virtual partition. For example,
keira# shutdown -R
Do not put the nPartition into vPars mode; you will need to perform an additional reboot into nPars mode.
3. Allow the system to reboot into nPars mode. Once this is successful, the OS kernel automatically will
write the correct CPU mapping data to EFI. Now you can reboot the nPartition back into vPars mode and
reboot the Monitor.
keira# vparenv -m vPars
keira# shutdown -r
...
fs0:\EFI\HPUX> boot vpmon
...