HP Instant Capacity User's Guide for Version 9.x

running iCAP software, the unreachable partition may be
assumed to be using all cores on cells configured for that
partition. Because of this, cells in partitions from which
usage rights have been acquired should be rebooted or
made inactive within 12 hours. If this is not done, the
partition can begin to consume temporary capacity. If
temporary capacity is not available, the complex might no
longer be in compliance with the iCAP contract. Cells can
be made inactive by removing them from the partition,
shutting down the partition from within the OS by using
shutdown -R -H, or with the MP RR command.
If, at the time of rights seizure, all member partitions are
unreachable, the rights seizure is deferred and must be
viewed as a limited and immediate loan of usage rights
from the specified partition to the group. This loan of seized
usage rights expires in 10 days. Upon expiration, usage
rights are automatically restored to the member partitions
from which they were seized. The expiration date for a
rights seizure operation effectively terminates the period
during which the core usage rights are available to other
group members for purposes of disaster recovery. If none
of the member partitions are reachable by the expiration
date for a particular member, the usage rights are
automatically restored (reassigned) to the member partition
(or complex, in the case of unassigned seized rights) from
which they were seized. However, if the seized usage rights
have been redeployed to other members and are not
released at expiration time, the group might go out of
compliance, or temporary capacity might be used to
maintain compliance.
If any partition of the inaccessible member from which
rights seizures were deferred reconnects to the group
before the expiration date, then the seized core usage rights
(for all partitions) are finalized as a loan from the member
to the group, the expiration date is no longer relevant, and
the usage rights can thereafter be manipulated with normal
icapmodify operations.
While rights seizure operations can be performed in a
virtual partition environment, the rights seizure always
operates on, and affects, the entire nPartition. This means:
• Rights seizure can be performed only if all the virtual
partitions for an nPartition are down.
• For a given nPartition, you can specify any of the
virtual partition host names as the target of a rights
seizure operation or as the target of a usage rights
restore operation.
• Because rights seizure leaves only a minimum of core
usage rights with the nPartition, is it likely that the
remaining number of core usage rights is not sufficient
to satisfy the number of cores assigned to each virtual
partition in the nPartition. This means that the virtual
partitions likely cannot be booted (due to
noncompliance) once the original failure is corrected.
156