METHODS AND SYSTEMS FOR PROVIDING A VIRTUALIZED NVMe OVER FABRIC SERVICE

PCIe devices installed in host computers communicating with service nodes can provide virtualized NVMe over fabric services. A workload on the host computer can submit an SQE on a NVMe SQ. The PCI device can read the SQE to obtain a command identifier, an OpCode, and a namespace identifier (NSID). T...

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Bibliographic Details
Main Authors Gai, Silvano, Cafiero, Luca, Kamisetty, Sarat, Galles, Michael Brian, Mazzola, Mario, Doddapaneni, Krishna
Format Patent
LanguageEnglish
Published 24.11.2022
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:PCIe devices installed in host computers communicating with service nodes can provide virtualized NVMe over fabric services. A workload on the host computer can submit an SQE on a NVMe SQ. The PCI device can read the SQE to obtain a command identifier, an OpCode, and a namespace identifier (NSID). The SQE can be used to produce a LTP packet that includes the opcode, the NSID, and a request identifier. The LTP packet can be sent to the service node, which may access a SAN in accordance with the opcode and NSID, and can respond to the LTP with a second LTP that includes the request identifier and a status indicator. The PCI device can use the status indicator and the request identifier to produce a CQE that is placed on a NVMe CQ associated with the SQ.
Bibliography:Application Number: US202117326284