HP-UX Virtual Partitions Administrator's Guide (includes A.03.05 and A.04.05)

CAUTION:
• If you reduce the ILM amount below that configured for all the virtual partitions in your
vPars database, one or more of the virtual partitions may not boot. Be sure that there is
enough CLM and ILM configured in the nPartition so that the sum of ILM and CLM memory
of all your virtual partitions does not exceed the ILM and CLM in the nPartition.
• New servers should be set with 100% ILM and 0% CLM. However, a firmware update or
even another systems administrator can change these values. You should check your NVRAM
configuration before configuring vPars. Also, if you need to set an equal amount of ILM
across all cells (see the HP-UX Virtual Partitions Release Notes for A.04.01), you should set
your NVRAM configuration to 100% ILM and 0% CLM, then perform the CLM calculations
and operations to get the equal amounts of ILM.
To check the existing ILM/CLM configuration, use parstatus. For example, to check the
ILM and CLM configuration in nPartition 2:
keira# parstatus -V -p 2
[Partition]
Partition Number : 2
Partition Name : Partition 2 - HPUX
Status : Active
IP Address:
Primary Boot Path : 12/0/3/1/0.0.0
Alternate Boot Path :
HA Alternate Boot Path :
PDC Revision : 3.66
IODCH Version : ffff
Cell Architecture : Itanium(R)-based
CPU Compatibility : BCF-640
CPU Speed : 1600 MHz
Core Cell : cab1,cell4
Core Cell Choice [0] : cab1,cell4
Total Good Memory Size : 40.0 GB
Total Interleave Memory: 1.0 GB
Total Requested CLM : 40.0 GB
Total Allocated CLM : 39.0 GB
The parstatus output shows the current configuration of 1 GB ILM and 39 GBs of CLM.
Assuming nPartition 2 consists of cells 12 and 14, to change values of ILM to 100% and CLM
to 0%, set the value of CLM to 0% (any memory not configured as CLM becomes ILM):
keira# parmodify -p 2 -m 12::::0% -m 14::::0%
keira# shutdown -R
After the nPartition is rebooted, the parstatus output should show all memory configured
as ILM:
keira# parstatus -V -p 2
[Partition]
Partition Number : 2
Partition Name : Partition 2 - HPUX
Status : Active
IP Address:
Primary Boot Path : 12/0/3/1/0.0.0
Alternate Boot Path :
Configuring CLM for an nPartition 269