System Event Log (Sel); Servicing Events; Sel Entry Deletion; Sel Erasure - Intel X38ML - Server Board Motherboard Technical Manual

Intel® Server Board X38ML

5.11 System Event Log (SEL)

The BMC implements the system event log as specified in the Intelligent Platform Management
Interface Specification, Version 2.0. The SEL is accessible regardless of the system power state
via the BMC's in-band and out-of-band interfaces.
The BMC allocates 65,536 bytes (64 KB) of non-volatile storage space to store system events.
Each record is padded with a four-byte timestamp that indicates when the record was created,
making each SEL record 20 bytes in size. The SEL timestamps might not be in order. The BMC
can store up to 3,276 SEL records at a time. An attempt to add records beyond the maximum
number results in a failure and the out-of-space completion code is returned.
5.11.1

Servicing Events

Events can be received while the SEL is being cleared. The BMC implements an event
message queue to avoid the loss of messages. The BMC can queue up to three messages
before messages are overwritten.
The BMC recognizes duplicate event messages by comparing sequence numbers and the
message source. See the IPMI 2.0 specification. Duplicate event messages are discarded
(filtered) by the BMC after they are read from the event message queue. This means the queue
can contain duplicate messages.
5.11.2

SEL Entry Deletion

The BMC does not support individual SEL entry deletion. The SEL may only be cleared as a
whole.
5.11.3

SEL Erasure

SEL erasure is a background process. After initiating erasure with the Clear SEL command,
additional Clear SEL commands must be executed to get the erasure status and determine
when the SEL erasure is completed. This may take several seconds. SEL events that arrive
during the erasure process are queued until the erasure is complete and then committed to the
SEL.

5.12 Sensor Data Record (SDR) Repository

The BMC implements the sensor data record (SDR) repository as specified in the Intelligent
Platform Management Interface Specification, Version 2.0. The SDR is accessible through the
BMC's in-band and out-of-band interfaces regardless of the system power state The BMC
allocates 65,536 bytes (64 KB) of non-volatile storage space for the SDR.
Only modal SDR updates are supported, as described in the IPMI 2.0 specification. The SDR
may not be modified unless the BMC is in SDR update mode.
5.12.1

SDR Repository Erasure

SDR repository erasure is a background process. After initiating erasure with the Clear SDR
Repository command, additional Clear SDR Repository commands must be executed to get
erasure status and determine when the SDR repository erasure is done. This may take several
Revision 1.3
Intel order number E15331-006
Platform Management
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