Method and system for submission queue acceleration

A system comprising:

• a submission queue accelerator interposed between a client and a storage controller, wherein the submission queue accelerator is configured to:
• receive an input/output (I/O) request, wherein the I/O request comprises a command, wherein the I/O request is associated with a virtual submission queue (vSQ), wherein the vSQ appears to the client as a set of memory locations in memory operatively connected to a storage controller,
• obtain a virtual server queue identifier (vSQ ID) associated with vSQ,
• identify a server submission queue (sSQ) based on the vSQ and a vSQ-to-sSQ mapping,
• generate a submission queue entry comprising the command and the vSQ ID, and
• send the submission queue entry in a sSQ store command to the storage controller;
• and
• the storage controller configured to:
• receive the sSQ store command, and
• store the submission queue entry in the sSQ, wherein the sSQ is one a plurality of sSQs located in the memory.

A method for writing data to server submission queues in a storage controller, comprising:

• receiving an input/output (I/O) request, wherein the I/O request comprises a command and a priority class, wherein the I/O request is associated with a virtual submission queue (vSQ), and wherein the vSQ appears to the client as a set of memory locations in memory operatively connected to a storage controller;
• obtaining a virtual server queue identifier (vSQ ID) associated with vSQ;
• obtaining the priority class from the I/O request;
• identifying a server submission queue (sSQ) based on the priority class and a priority class-to-sSQ mapping;
• generating a submission queue entry comprising the command, the priority class, and the vSQ ID;
• and
• sending the submission queue entry to the storage controller, wherein the sSQ is located in the memory, wherein the storage controller is configured to place the submission queue entry in the sSQ.