Understanding Events; Description Of Data Fields For The Event Log - IBM Storwize V7000 Unified Series Problem Determination Manual

Understanding events

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Storwize V7000 Unified: Problem Determination Guide Version
When a significant change in status is detected, an event is logged in the event log.
Error data
Events are classified as either alerts or messages:
v An alert is logged when the event requires some action. Some alerts have an
associated error code that defines the service action that is required. The service
actions are automated through the fix procedures. If the alert does not have an
error code, the alert represents an unexpected change in state. This situation
must be investigated to see if it is expected or represents a failure. Investigate an
alert and resolve it as soon as it is reported.
v A message is logged when a change that is expected is reported, for instance, an
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Viewing the event log
You can view the event log by using the management GUI or the command-line
interface (CLI).
You can view the event log by using the Monitoring > Events options in the
management GUI. The event log contains many entries. You can, however, select
only the type of information that you need.
You can also view the event log by using the command-line interface (lseventlog).
See the "Command-line interface" topic for the command details.
Managing the event log
The event log has a limited size. After it is full, newer entries replace entries that
are no longer required.
To avoid having a repeated event that fills the event log, some records in the event
log refer to multiple occurrences of the same event. When event log entries are
coalesced in this way, the time stamp of the first occurrence and the last occurrence
of the problem is saved in the log entry. A count of the number of times that the
error condition has occurred is also saved in the log entry. Other data refers to the
last occurrence of the event.
Describing the fields in the event log
The event log includes fields with information that you can use to diagnose
problems.
Table 38 describes some of the fields that are available to assist you in diagnosing
problems.
Table 38. Description of data fields for the event log
Data field Description
Event ID This number precisely identifies why the event was logged.
Error code This number describes the service action that should be followed to
resolve an error condition. Not all events have error codes that are
associated with them. Many event IDs can have the same error code
because the service action is the same for all the events.
Sequence number A number that identifies the event.
Event count The number of events coalesced into this event log record.