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Subject: Info on State vs Status in the DMTF CIM Schema
- From: "Andrea Westerinen" <andreaw@cisco.com>
- To: <wsdm@lists.oasis-open.org>
- Date: Tue, 20 Jan 2004 09:41:45 -0800
Title: Message
DMTF's schema distinguishes between status and
state. I have included both properties and their enums
here.
EnabledState, Default =
5
0 =
"Unknown", 1
= "Other", 2 = "Enabled",
3 =
"Disabled", 4 = "Shutting
Down", 5 = "Not
Applicable",
6 = "Enabled but
Offline", 7 = "In
Test", 8 =
"Deferred",
9
= "Quiesce", 10 = "Starting", 11 + up = "Reserved"
"EnabledState is an integer enumeration that indicates the
enabled/disabled states of an element. It can also indicate the transitions between these requested states. For example, shutting down (value = 4) and starting
(value=10) are transient states between enabled
and disabled. The following text briefly
summarizes the various enabled/disabled states:
- Enabled (2) indicates that the
element is/could be executing commands,
will process any queued
commands, and queues new requests.
- Disabled (3) indicates that the element will not execute commands and
will drop any new
requests.
- Shutting Down (4) indicates that the element is in the process of going to a Disabled
state.
- Not
Applicable (5) indicates the element doesn't support being enabled/disabled.
- Enabled but Offline (6) indicates that the element may be completing
commands, and will drop
any new requests.
- Test
(7) indicates that the element is in a test state.
- Deferred (8) indicates that the element may be completing commands,
but will queue any new
requests.
- Quiesce (9) indicates that the element is enabled but in a restricted mode.
The element's behavior is
similar to the Enabled state, but it only
processes a
restricted set of
commands. All other requests are
queued.
- Starting (10) indicates that the element is in the process of going to an
Enabled state. New
requests are queued."
OperationalStatus - An array
0 = "Unknown", 1="Other", 2="OK", 3="Degraded",
4="Stressed", 5="Predictive
Failure", 6="Error",
7="Non-Recoverable
Error", 8="Starting", 9="Stopping",
10="Stopped", 11="In
Service", 12="No Contact",
13="Lost
Communication", 14="Aborted", 15="Dormant",
16="Supporting Entity in Error", 17="Completed",
18="Power Mode"
"Indicates the current status(es) of the element. Various
health and operational statuses are defined. Many of the enumeration's values
are self- explanatory. However, a few are not and are described in more detail.
- \"Stressed\" indicates that the element is
functioning, but needs attention.
Examples of \"Stressed\" states are
overload, overheated, etc.
- \"Predictive
Failure\" indicates that an element is functioning nominally but
predicting a failure in the near
future.
- \"In Service\"
describes an element being configured, maintained, cleaned,
or otherwise administered.
- \"No Contact\"
indicates that the monitoring system has knowledge of this element,
but has never been able to
establish communications with it.
- \"Lost
Communication\" indicates that the ManagedSystemElement is known to
exist and has been contacted
successfully in the past, but is currently
unreachable.
- \"Stopped\" and
\"Aborted\" are similar, although the former
implies a clean and
orderly stop, while the latter
implies an abrupt stop where the element's state
and configuration may need to be updated.
- \"Dormant\"
indicates that the element is inactive or quiesced.
- \"Supporting
Entity in Error\" describes that this element may
be \"OK\" but that
another element, on which it is
dependent, is in error. An example is a network
service or endpoint that cannot function due to lower layer networking problems.
- \"Completed\"
indicates the element has completed its operation. This value
should be combined with either OK,
Error, or Degraded so that a client can tell
if the complete operation passed (Completed with OK), and failure (Completed with Error).
Completed with Degraded would
imply the operation finished, but did not
complete
OK or report an error.
- \"Power Mode\"
indicates the element has additional power model
information
contained in the
AssociatedPowerManagementService association.
Andrea
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