Intel Corporation

Sk Hynix Nand Product Solutions Corp.

James R Harris

Benjamin Walker

Ziye Yang

Gang Cao

Changpeng Liu

Sanjeev N Trika

Xiaodong Liu

Piotr Wysocki

Kapil Karkra

David E Cohen

Jonathan M Hughes

Jackson Ellis

Qihua Dai

Gregory Tucker

Anil Vasudevan

Steven C Miller

Yadong Li

Eric Dahlen

Cunming Liang

Kiran A Patil

Danny Yigang Zhou

Bishwajit Dutta

Chong Han

Mark W Wunderlich

John W Carroll

Vishal Verma

Tomasz Zawadzki

Cunyin Chang

Mateusz Kozlowski

Artur Paszkiewicz

Sudheer Mogilappagari

A method is described. The method includes constructing a bitmap having a first dimension organized into bins of logical block addresses (LBA bins) and a second dimension organized into bins of physical block addresses (PBA bins). Coordinates of the bitmap indicate whether respective physical blocks of non volatile memory within one or more SSDs that fall within a particular PBA bin are being mapped to by an LBA that falls within a particular one of the LBA bins. The method includes using the bitmap during a rebuild of an LBA bin of an LBA/PBA table to avoid reading meta data for physical blocks that are not mapped to by an LBA that falls within the LBA bin.

Fast LBA/PBA table rebuild by skipping read of metadata of LBA bin that is not mapped

An apparatus is described. The apparatus includes a network interface having a system interface, a media access interface and circuitry to construct a block of null values for a logical block address (LBA) in response to a remote storage system having informed the network interface that the LBA was un-mappable.

Network interface with intelligence to build null blocks for un-mappable logical block addresses

Systems and methods for a controller including controller memory and logic are presented herein. The logic is configured to control access to a persistent storage media and, in response to one or more commands, determine an intermediate parity value based on a first parity calculation by sending a uni-directional command to the persistent storage media. The logic is further configured to store, in the controller memory, the intermediate parity value, and determine a final parity value based on the intermediate parity value and a second parity calculation.

ON-SSD erasure coding with uni-directional commands

The disclosure concerns at least one processor that can execute a polling group to poll for storage transactions associated with a first group of one or more particular queue identifiers. The disclosure concerns at least one processor is configured to: execute a second polling group on a second processor, wherein the second polling group is to poll for storage transactions for a second group of one or more particular queue identifiers that are different than the one or more particular queue identifiers of the first group, wherein the second group of one or more particular queue identifiers are associated with one or more queues that can be accessed using the second polling group and not the first polling group.

Storage transactions with predictable latency

An embodiment of an electronic apparatus may include one or more substrates, and logic coupled to the one or more substrates, the logic to maintain a respective lookup table for each of two or more persistent storage devices in a persistent memory outside of the two or more persistent storage devices with a first indirection granularity that is smaller than a second indirection granularity of each of the two or more persistent storage devices, buffer write requests to the two or more persistent storage devices in the persistent memory in accordance with the respective lookup tables, and perform a sequential write from the persistent memory to a particular device of the two or more persistent storage devices when a portion of the buffer that corresponds to the particular device has an amount of data to write that corresponds to the second indirection granularity. Other embodiments are disclosed and claimed.

Controller and persistent memory shared between multiple storage devices

Systems and methods for a controller including controller memory and logic are presented herein. The logic is configured to control access to a persistent storage media and, in response to one or more commands, the logic determines an intermediate parity value based on a first parity calculation, and using the intermediate parity value determines a final parity value based on the intermediate parity value and a second parity calculation. Determining the intermediate parity value includes sending a uni-directional command to read an old data value from an address indicated in the uni-directional command, perform an exclusive-or operation on the old data value and a new data value indicated in the uni-directional command to determine the intermediate parity value and store, in the persistent storage media, the intermediate parity value at a location associated to an index indicated in the uni-directional command.

On-SSD erasure coding with uni-directional commands

Examples herein relate to polling for input/output transactions of a network interface or a storage device, or any peripheral device. Some examples monitor clock cycles spent checking for a presence of input/output (I/O) events and processing I/O events and monitor clock cycles spent checking for presence of I/O events without completing an I/O event. Central processing unit (CPU) core utilization can be based on clock cycles spent checking for a presence of I/O events and processing I/O events and clock cycles spent checking for presence of I/O events without completion of an I/O event. For example, if core utilization is below a threshold, frequency of the core can be reduced for performing polling of I/O events. If core utilization is at or above the threshold, frequency of the core can be increased used to performing polling of I/O events.

Adaptive processor resource utilization

A computer program product, system, and method to manage access to storage resources from multiple applications. A plurality of virtual controllers is generated in a host memory space. Each virtual controller includes at least one virtual namespace that maps to a physical namespace in a physical controller. Applications are assigned to the virtual controllers. For each application of the applications assigned one of the virtual controllers, a virtual submission queue is generated to communicate with the virtual controller assigned to the application. An Input/Output (I/O) request to a target virtual namespace in one of the virtual submission queues is added to a physical submission queue for the physical controller having the physical namespace for which the target virtual namespace was generated.

Computer program product, system, and method to manage access to storage resources from multiple applications

Embodiments of the present disclosure relate to an electronic apparatus that includes a metadata generator, to generate an extents table (ET) that lists one or more extents pages (EPs), where an EP is a fixed size, and where the one or more EPs store one or more extents. An extent includes an allocation indication for a cluster in a memory device, where a number of the extents corresponds to a number of clusters of the memory device, where a subset number of the extents is stored in one of the one or more EPs, and where the subset number is based on the fixed size of the EP. The electronic apparatus further includes a metadata updater, to modify the allocation indication in the extent stored in the one of the one or more EPs, based on a corresponding change in an allocation of the cluster in the memory device.

Efficient metadata storage for a non-volatile storage device

Disclosed herein are systems and methods for isolating input/output computing resources. In some embodiments, a host device may include logic to identify a Process Address Space Identifier (PASID) for a process or container of the host device and logic to associate the PASID with an individual queue pair of a hardware device of the host device, wherein the queue pair includes two complementary queues and wherein the queue pair is owned by the process or container upon association with the PASID. Other embodiments may be disclosed and/or claimed.

Systems and methods for isolating input/output computing resources

Technologies for prioritized execution of storage commands by a data storage device include determining a priority of storage commands issued by a host and adding the storage commands to a queue of the data storage device based on the determined priority of the storage command. For example, the storage command issued by the host may be divided into sub-commands and added to a storage sub-command queue of the data storage device based on the determined priority of the storage command. The priority of the storage commands may be determined based on any suitable criteria including, for example, the host storage command queue storing the storage command, metadata associated with the storage command, the type or size of the storage command, and/or other aspects of the storage command, the host, and/or the data storage device.

Technologies for prioritizing execution of storage commands

Growing community of inventors

Chandler, AZ, United States of America

James R Harris