parspec.5 (2012 03)

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parspec(5)

For OA Based Partition Management Systems

parspec(5)

NAME

parspec - description of partition speciﬁcation

DESCRIPTION

Platforms that have Onboard Administrator (OA) based partition management support partition

speciﬁcations or

parspecs.A

parspec is a collection of data that deﬁnes the conﬁguration of a speciﬁc

nPartition, including the virtual partitions in the nPartition if the customer has deﬁned any virtual parti-

tions.

You may use the

parspec functionality to do the following:

• Save nPartition and virtual partition conﬁgurations.

• Modify conﬁgurations.

• Create partitions.

The following are the key features of

parspecs

• Every

parspec deﬁnes only one nPartition.

• Multiple nPartitions must be described in multiple

parspecs.

• A nPartition can be created from a speciﬁed

parspec.

• Every nPartition that exists has a

parspec associated with it (referred to as a current parspec),

and there can be only one current

parspec for a given nPartition.

• Any

parspec not associated with an existing nPartition is an alternate

parspec.

• Every

parspec has a unique name (scope of uniqueness in a complex).

•

Parspecs can be managed through the partition commands.

• The vPar database resides within a

parspec.

•

Parspecs are stored on the OA.

nPartition Commands and parspec

Parspecs are handled with the following nPartition commands and options.

• When creating a new nPartition using an existing alternate

parspec, use: parcreate -Z

parspec_name.

• An alternate

parspec can be created using: parcreate -C parspec_name.

• The

parspec of the current partition (both nPartition and any virtual partitions deﬁned in it) can be

saved via: parmodify -c parspec_name.

• The

parstatus -z command lists all parspecs or those of speciﬁed nPartitions. The

par-

status -Z shows the content of the speciﬁed parspec.

•

Parspecs are removed with the parremove -Z command.

Refer to these manpages for more information. See EXAMPLES below for sample usages.

Current Parspec Restrictions

Since current

parspecs maintain the conﬁguration information of existing nPartitions, they cannot be

modiﬁed using the options intended for use on alternate parspecs. For example, the -Z option of the

parmodify command cannot be used on a current parspec.

Note that

parspecs are only supported for systems with Onboard Administrator (OA) based partition

management.

Parspec Change Policy

Though the concept of "parspecs" itself is a new feature, the ability for a partition controller to modify

conﬁgurations without user intervention is not new. With this in mind, it is worthwhile to mention more

about the parspec change policy.

The "parspec change policy" is an attribute of an nPartition which the user can enable or disable. By

default, it is enabled. The parspec change policy determines whether the OA can automatically modify a

parspec in order to successfully perform a partition operation (such as activating an nPartition). In some

scenarios, it is possible that the system cannot meet the customer requested resource or attribute

speciﬁcations in the parspec for an nPartition or virtual partition. This could be due to non-existent

resources or degraded resources, or other restrictions in hardware architecture. Under these cir-

cumstances, the partition conﬁguration in the parspec may need to be modiﬁed to make forward progress.

HP-UX 11i Version 3: March 2012 − 1 − Hewlett-Packard Company 1

Summary of content (4 pages)

PAGE 1
parspec(5) For OA Based Partition Management Systems parspec(5) NAME parspec - description of partition specification DESCRIPTION Platforms that have Onboard Administrator (OA) based partition management support partition specifications or parspecs. A parspec is a collection of data that defines the configuration of a specific nPartition, including the virtual partitions in the nPartition if the customer has defined any virtual partitions.
PAGE 2
parspec(5) For OA Based Partition Management Systems parspec(5) The parspec change policy attribute of the nPartition gives the customer the ability to choose the behavior in these cases. If the parspec change policy is enabled (default), the affected partition operation is continued with available or modified resources or attributes after making the required changes in the parspec.
PAGE 3
parspec(5) For OA Based Partition Management Systems parspec(5) parcreate -Z Alt_Config Switch to an alternate configuration. Note that the current configuration maintained in a parspec is not removed when the nPartition is removed. The first command will display the name of the current parspec for nPartition 1. parstatus -p 1 -z poweroff partition 1 parremove -p 1 parcreate -Z Alt_Config ERRORS OA syslog contains additional description of errors encountered during partition operations.
PAGE 4
(Notes) A (Notes) pA 4 Hewlett-Packard Company −1− HP-UX 11i Version 3: March 2012