CBRB: Object Receive Begin

Contributors

During normal system operations, content blocks are continuously transferred between different nodes as data is accessed, replicated and retained. When transfer of a content block from one node to another is initiated, this message is issued by the destination entity.

Code Field Description

CNID

Connection Identifier

The unique identifier of the node-to-node session/connection.

CBID

Content Block Identifier

The unique identifier of the content block being transferred.

CTDR

Transfer Direction

Indicates if the CBID transfer was push-initiated or pull-initiated:

PUSH: The transfer operation was requested by the sending entity.

PULL: The transfer operation was requested by the receiving entity.

CTSR

Source Entity

The node ID of the source (sender) of the CBID transfer.

CTDS

Destination Entity

The node ID of the destination (receiver) of the CBID transfer.

CTSS

Start Sequence Count

Indicates the first sequence count requested. If successful, the transfer begins from this sequence count.

CTES

Expected End Sequence Count

Indicates the last sequence count requested. If successful, the transfer is considered complete when this sequence count has been received.

RSLT

Transfer Start Status

Status at the time the transfer was started:

SUCS: Transfer started successfully.

This audit message means a node-to-node data transfer operation was initiated on a single piece of content, as identified by its Content Block Identifier. The operation requests data from "Start Sequence Count" to "Expected End Sequence Count". Sending and receiving nodes are identified by their node IDs. This information can be used to track system data flow, and when combined with storage audit messages, to verify replica counts.