HP-UX Virtual Partitions Administrator Guide (includes A.05.07) (5900-1229, September 2010)

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Configuring CLM for an nPartition
ILM memory can be re-configured to be CLM using the parmodify command. Then, you can
assign existing available CLM to a virtual partition.
For complete information on CLM and configuring cells and nPartitions, see the nPartition’s
Guide.
parmodify syntax
The syntax for the parmodify command is
parmodify -pnPar_num -mcell:[type]:[use]:[fail][:clm]
where
nPar_num
is the nPartition number
cell is the cell to be modified. this can be either the global format (cell_number) or
hardware format (cabinet/slot)
type is the cell type. base is the only valid value and is the default.
use is the use-on-next-boot value. this is either a y or n. The default is y. Use y if the
cell is to be an active member of the nPartition or n if the cell is to be an inactive
member
fail is the cell failure usage. the only valid value is ri (reactivate with interleave) and
is the default
clm
is the amount of memory that will be configured as cell local memory for the cell.
this value can either be an absolute (the default) or percentage value. The absolute
value is a number, which represents the amount of memory in gigabytes; the
percentage value is any number followed by the character %.
Example
• To configure 1 GB of memory as CLM on cell 6 of nPartition 0, the command is
# parmodify -p0 -m 6::::1
For the parmodify change to take effect, you need to reboot the nPartition. This can be
done by MON> reboot.
Configuring CLM Notes
IMPORTANT: The HP-UX operating system does not support a 100% CLM configuration in an
nPartition. Some memory must be configured as ILM to support HP-UX (whether in a vPars
environment or not).
• It is possible that a server’s NVRAM (non-volatile RAM) values for ILM and CLM can change
due to a firmware update or a previous systems administrator. Verify the NVRAM values.
• Any memory that is not configured as CLM remains ILM.
• You need to be sure to leave enough ILM memory for your virtual partitions to boot, as
specified in your vPars database. Also, on PA-RISC not all memory can be configured as
CLM in an nPartition. You need to allow ILM memory for the vPars Monitor to boot and
for all the OS kernels to boot; excluding the first granule, a portion of which is used by the
vPars Monitor, there must be at least one entire granule that exists below the 2 GB limit for
each virtual partition. These granules below the 2 GB limit are used by the kernel of each
virtual partition.
276 nPartition Operations