Inventec P47 series, Руководство по обслуживанию

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K800G4 BMC Specification
9
7. System Event Log (SEL)
The BMC provides a centralized, non-volatile System Event Log, aka SEL. System Event Logs are special messages that are
sent by management controllers when they detect significant or critical system management events. This includes
messages for events such as temperature threshold exceeded’, ‘voltage threshold exceeded’, ‘power fault’, and etc.
7.1 Time Synchronization
Time stamping is a key part of event logging and tracking. SEL timestamp need to be set through BIOS or System
Management Software. There are 3 scenarios that BMC would synchronize its Real Time clock (RTC) with the host system:
a.
During system Power-on Self Test (POST), BIOS would wait BMC function ready (approximate 120 sec.), then send the
Set SEL Time command with the current system time to sync RTC timer.
b. In runtime, on every BMC reset, BMC will assert GPIO to generate SMI to BIOS, then BIOS would send the Set SEL
Time command with the current system time to sync RTC timer.
c. The BMC would automatically sync its RTC timer every 24 hours to maintain the tolerance within 3sec, via issue a SMI
to BIOS.
Those events generated before the timestamp be set would show “Pre-Init Time-Stamp”as its timestamp, BMC will log SEL
no matter the timestamp be set or not.
7.2 The Behavior when SEL is full.

Single Entry Delete
The
Delete SEL Entry
Command of IPMI is able to remove the individual records.

SEL Entry for SEL overflow
When SEL is about to fill, the last entry recorded would be a SEL entry stating the SEL has overflowed. This entry
gives the system an indication that subsequent SEL entries were lost.

SEL Circle Log
When SEL is full, the system will record an "overflow" message and the oldest log is instead of a new one. And then it
records an event for “SEL full”.

SEL Clear
When all events are captured by SMS tool, SMS tool is able to clear SEL entry. After all events are cleaned, SEL agent
will create a new event for this action.