REPURPOSABLE BUFFERS FOR TARGET PORT PROCESSING OF A DATA TRANSFER

摘要

A port processor to receive a read command in a target port. In response, use the target to process a data transfer that includes use of memory for the read transfer allocated by a storage array controller prior to receipt of the read command by the target port or while processing the data transfer and selectively mark such memory as repurposable. The port processor to receive a write command in the target port. In response to receipt of the write command, use the target to process a data transfer for the initiator associated with the write operation, wherein the process includes use of memory that the storage array controller pre-allocated or allocated based on receipt of the read command by the target port for the transfer to the storage array controller and marked as repurposable.

主权项

1. A method comprising:
receiving a read command in a target port, the read command being provided by an initiator and being associated with a read operation; in response to receiving the read command, using the target to process a data transfer for the initiator associated with the read operation, wherein the processing includes using memory for the read transfer allocated by a storage array controller prior to receipt of the read command by the target port or while processing the data transfer and selectively marking such memory as repurposable; receiving a write command in the target port, the write command being provided by an initiator and being associated with a write operation; and in response to receiving the write command, using the target to process a data transfer for the initiator associated with the write operation, wherein the processing includes using memory that the storage array controller pre-allocated or allocated based on receipt of the read command by the target port for the transfer to the storage array controller and marked as repurposable.