Abstract: A method, computer program product, and computer system for exposing, by a user block layer of a computing device, a storage device as a block device to an application associated with an IO request. A Non-Volatile Memory Express (NVMe) protocol layer of the computing device may expose a NVMe storage device associated with the IO request to the user block layer. A NVMe-over-RDMA layer of the computing device may create a NVMe RDMA queue for the IO request to be processed.

Abstract: A method, computer program product, and computing system for associating a plurality of NVMe IO submission queues with an NVMe IO completion queue. An NVMe IO completion queue polling frequency may be defined for a plurality of threads configured to provide one or more IO requests to the plurality of NVMe IO submission queues. The NVMe IO completion queue may be polled based upon, at least in part, the NVMe IO completion queue polling frequency defined for the plurality of threads.

Abstract: A method, computer program product, and computer system for directing, by a computing device, an incoming Non-Volatile Memory express (NVMe) command to a kernel driver. The kernel driver may enqueue the incoming NVMe command until fetched by a user space. The NVMe command may be fetched from the kernel driver for processing. The NVMe command may be pushed to a user space block device of the user space.

Abstract: A method, computer program product, and computing system for receiving an input/output (IO) command for processing data within a storage system. An IO command-specific entry may be generated in a register based upon, at least in part, the IO command. An compare-and-swap operation may be performed on the IO command-specific entry to determine an IO command state associated with the IO command. The IO command may be processed based upon, at least in part, the IO command state associated with the IO command.

Abstract: A method, computer program product, and computing system for receiving an input/output (IO) command for processing data within a storage system. An IO command-specific entry may be generated in a register based upon, at least in part, the IO command. An compare-and-swap operation may be performed on the IO command-specific entry to determine an IO command state associated with the IO command. The IO command may be processed based upon, at least in part, the IO command state associated with the IO command.

Abstract: A method, computer program product, and computer system for using, by a computing device, free central processing unit (CPU) cycles for processing Non-Volatile Memory express Over Fiber (NVMeoF)/Transmission Control Protocol (TCP) sockets. Using the free CPU cycles for processing the NVMeoF/TCP sockets may include exposing a character device with a callback that iterates over the NVMeoF/TCP sockets for processing.

Abstract: A method, computer program product, and computing system for assigning a first set of interrupts for exclusive processing by a first set of central processing units (CPU) cores. A second set of interrupts may be assigned for processing by a second set of CPU cores. The first set of interrupts may be processed using the first set of CPU cores. The second set of interrupts may be converted to a set of polling operations, thus defining a set of converted polling operations. The set of converted polling operations may be processed using the second set of CPU cores.

Abstract: A method, computer program product, and computing system for assigning a first set of interrupts for exclusive processing by a first set of central processing units (CPU) cores. A second set of interrupts may be assigned for processing by a second set of CPU cores. The first set of interrupts may be processed using the first set of CPU cores. The second set of interrupts may be converted to a set of polling operations, thus defining a set of converted polling operations. The set of converted polling operations may be processed using the second set of CPU cores.

Abstract: A method, computer program product, and computing system for associating a plurality of NVMe IO submission queues with an NVMe IO completion queue. An NVMe IO completion queue polling frequency may be defined for a plurality of threads configured to provide one or more IO requests to the plurality of NVMe IO submission queues. The NVMe IO completion queue may be polled based upon, at least in part, the NVMe IO completion queue polling frequency defined for the plurality of threads.

Abstract: A method, computer program product, and computer system for directing, by a computing device, an incoming Non-Volatile Memory express (NVMe) command to a kernel driver. The kernel driver may enqueue the incoming NVMe command until fetched by a user space. The NVMe command may be fetched from the kernel driver for processing. The NVMe command may be pushed to a user space block device of the user space.

Abstract: A method, computer program product, and computer system for using, by a computing device, free central processing unit (CPU) cycles for processing Non-Volatile Memory express Over Fiber (NVMeoF)/Transmission Control Protocol (TCP) sockets. Using the free CPU cycles for processing the NVMeoF/TCP sockets may include exposing a character device with a callback that iterates over the NVMeoF/TCP sockets for processing.

Abstract: A method, computer program product, and computer system for exposing, by a user block layer of a computing device, a storage device as a block device to an application associated with an IO request. A Non-Volatile Memory Express (NVMe) protocol layer of the computing device may expose a NVMe storage device associated with the IO request to the user block layer. A NVMe-over-RDMA layer of the computing device may create a NVMe RDMA queue for the IO request to be processed.

Abstract: Example embodiments of the present invention relate and a method and an apparatus for double hashing. The method including receiving a hash signature, including a short hash handle, for a data block. The method then includes determining a bucket with which the hash signature should be associated and associating the hash signature with the bucket.

Abstract: A method, computer program product, and computer system for maintaining a federation of a plurality of appliances as a single subsystem, wherein maintaining the federation as the single subsystem may include maintaining a centralized discovery mechanism across the plurality of appliances, wherein a discovery service of the centralized discovery mechanism may return a list of all ports in the federation. Controller IDs for a predefined range of controller IDs may be allocated for a plurality of dynamic controllers per appliance of the plurality of appliances, wherein the controller IDs may be allocated as a response to a connect command from a host. An empty namespace list for the plurality of dynamic controllers on the plurality of appliances in the federation may be exposed. The host may receive a notification from at least one dynamic controller of the plurality of dynamic controllers on at least one appliance of the plurality of appliances in the federation.

Abstract: A method, computer program product, and computing system for receiving a plurality of input/output (IO) commands for a plurality of configuration objects of a storage system. A modification command for a configuration object of the plurality of configuration objects may be received. The configuration object may be suspended in response to receiving the modification command. One or more IO commands directed to the suspended configuration object from the plurality of IO commands may be processed before the configuration object is modified.

Abstract: A method, computer program product, and computer system for maintaining a federation of a plurality of appliances as a single subsystem, wherein maintaining the federation as the single subsystem may include maintaining a centralized discovery mechanism across the plurality of appliances, wherein a discovery service of the centralized discovery mechanism may return a list of all ports in the federation. Controller IDs for a predefined range of controller IDs may be allocated for a plurality of dynamic controllers per appliance of the plurality of appliances, wherein the controller IDs may be allocated as a response to a connect command from a host. An empty namespace list for the plurality of dynamic controllers on the plurality of appliances in the federation may be exposed. The host may receive a notification from at least one dynamic controller of the plurality of dynamic controllers on at least one appliance of the plurality of appliances in the federation.

Abstract: A method, computer program product, and computer system for receiving, by a computing device, a command, wherein the command may include one of a write command and a read command. A completion request for a first portion of the command may be placed in a first queue when the completion request is a first type of completion request. An interrupt operation for the completion request may be executed when the completion request is the first type of completion request. The completion request for a second portion of the command may be placed in a second queue when the completion request is a second type of completion request. A polling operation for the completion request may be executed when the completion request is the second type of completion request.

Abstract: A method is disclosed comprising: instantiating, on a first device, a plurality of first connection objects; generating, by the first device, a first set of connection parameters that is associated with the plurality of first connection objects; transmitting the first set of connection parameters from the first device to a second device; receiving from the second device a second set of connection parameters, the second set of connection parameters being associated with a plurality of second connection objects that are instantiated on the second device; updating, by the first device, each of the first connection objects based on the second set of connection parameters; and transmitting, from the first device to the second device, a confirmation that a plurality of communications channels is established.

Abstract: A method is provided for collecting trace data items generated by a plurality of trace points, the method comprising: allocating a ring buffer in a first memory, the ring buffer including a plurality of trace buffers; when any of the trace points is executed, storing a trace data item generated by the trace point in one of the plurality of trace buffers that is identified by a given value of a ring pointer; retrieving the trace data item from the trace buffer based on at least one of: (i) a first timestamp that is generated when the trace data item is stored in the trace buffer, and (ii) a second timestamp indicating a time when the ring pointer was assigned the given value; and storing the retrieved trace data item in a second memory device.

Abstract: A method, computer program product, and computing system for receiving a plurality of input/output (IO) commands for a plurality of configuration objects of a storage system. A modification command for a configuration object of the plurality of configuration objects may be received. The configuration object may be suspended in response to receiving the modification command. One or more IO commands directed to the suspended configuration object from the plurality of IO commands may be processed before the configuration object is modified.