Using the Event Monitoring Service (November 1999)

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physical extent LVM divides
each physical disk into addressed
units called physical extents.
physical volume A disk that has
been initialized by LVM.
polling The process by which a
monitor obtains the most recent
status of a resource. The method is
defined by the monitor when it is
created.
polling interval Determines the
maximum amount of elapsed time
before the monitor knows about a
change in resource status.
protocol The method used to send
notification messages. The options
through EMS include: opcmsg,
SNMP, TCP, UDP, syslog, console,
textlog and email.
PVG (physical volume group)
A grouping of physical devices
(host adapters, busses, controllers,
or disks), that allow LVM to
manage redundant links or
mirrored disks and access the
redundant hardware when the
primary hardware fails.
PV links A method of LVM
configuration that allows you to
provide redundant SCSI interfaces
and buses to disk arrays, thereby
protecting against single points of
failure in SCSI cards and cables.
Q-R
registrar Software that provides
the link between clients (resource
status consumers) and resource
monitors (resource status
providers). The central part of the
resource monitor framework which
uses the resource dictionary to act
as an intermediary between client
systems and resource monitors.
resource Any entity that a
monitor application developer
names. Examples include a
network interface, CPU statistics,
a MIB object, and a network
service.
resource class A group of EMS
resources organized into a
filesystem type structure.
Examples include system
resources and cluster resources.
See resource instance.