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    Methods and Systems for Processing Write Requests in a Storage System
    2.
    发明公开
    Methods and Systems for Processing Write Requests in a Storage System 审中-公开

    公开(公告)号：US20230161500A1

    公开(公告)日：2023-05-25

    申请号：US17456012

    申请日：2021-11-22

    Applicant: NETAPP, INC.

    Inventor： Douglas P. Doucette ,  Sushilkumar Gangadharan ,  Rohit Singh

    IPC: G06F3/06 ,  G06F12/02

    CPC classification number: G06F3/0659 ,  G06F3/0613 ,  G06F3/0688 ,  G06F12/0238 ,  G06F2212/1016

    Abstract: Methods and systems for a storage environment are provided, including generating a plurality of child (or tetris) write requests to write data for a write request using a plurality of subdivisions of a plurality of logical zones defined for a plurality of zoned solid state drives (ZNS SSDs) of a RAID array, each LZone mapped to one or more logical RAID zone (RZone) of the ZNS SSDs having a plurality of physical zones across a plurality of independent media units of each ZNS SSD; assigning a sequence number to each child (or tetris) write request corresponding to each subdivision, the sequence number indicating an order in which the child (or tetris) write requests are to be processed; and selecting, based on the assigned sequence number, one or more subdivisions for sequentially writing data to one or more RZones of the plurality of ZNS SSDs.

    Methods for improving journal performance in storage networks and devices thereof
    3.
    发明授权
    Methods for improving journal performance in storage networks and devices thereof 有权

    公开(公告)号：US10552057B2

    公开(公告)日：2020-02-04

    申请号：US15167924

    申请日：2016-05-27

    Applicant: NetApp, Inc.

    Inventor： Ram Kesavan ,  Ananthan Subramanian ,  Hiroshi Ishii ,  Abdul Basit ,  Joseph Brown, Jr. ,  Rohit Singh

    IPC: G06F3/06

    Abstract: A method, non-transitory computer readable medium and storage server computing device that determines when a generated storage operation corresponds with one of a set of predefined storage operations. The storage operation is executed and a result of the execution of the storage operation is withheld from a file system, when the determining indicates that the storage operation corresponds with one of the set of predefined storage operations. A determination is made when a consistency point operation has completed. The result of the execution of the storage operation is presented to the file system, when the determining indicates that a consistency point operation has completed. This technology reduces the number of storage operations that are required to be journaled to maintain consistency of a file system, thereby reducing the runtime resources required to facilitate the journaling and replay resource required to replay the storage operations in a journal following a recovery.

    RESOURCE RESERVATION FOR STORAGE SYSTEM METADATA UPDATES
    4.
    发明申请
    RESOURCE RESERVATION FOR STORAGE SYSTEM METADATA UPDATES 有权
    存储系统资源保存更新

    公开(公告)号：US20160110121A1

    公开(公告)日：2016-04-21

    申请号：US14518157

    申请日：2014-10-20

    Applicant: NetApp, Inc.

    Inventor： Rohit Singh ,  Jungsook Yang ,  Rajesh Khandelwal ,  Jayalakshmi Pattabiraman

    IPC: G06F3/06

    CPC classification number: G06F3/0613 ,  G06F3/064 ,  G06F3/0683 ,  G06F9/5016 ,  G06F12/023 ,  G06F12/0246 ,  G06F12/0253 ,  G06F12/0261 ,  G06F12/0276 ,  G06F17/30138

    Abstract: It is determined that a first set of one or more blocks associated with a file system are to be freed. Each of the first set of blocks is associated with a block identifier. In response to a determination that the first set of blocks is to be freed, it is determined that a first log has been allocated an insufficient number of data blocks to store the block identifiers that are associated with the first set of blocks. In response to a determination that the first log has been allocated an insufficient number of data blocks, one or more data blocks are allocated to the first log. It is indicated that one or more block identifiers are to be removed from the first log and added to a second log. It is indicated that metadata associated with a second set of one or more blocks is to be updated.

    Abstract translation: 确定与文件系统相关联的一个或多个块的第一组将被释放。 第一组块中的每一个与块标识符相关联。 响应于第一组块要被释放的确定，确定已经为第一日志分配了不足数量的数据块来存储与第一组块相关联的块标识符。 响应于第一个日志被分配了不足数量的数据块的确定，一个或多个数据块被分配给第一个日志。 表示一个或多个块标识符将从第一个日志中删除并添加到第二个日志中。 指示与一个或多个块的第二组相关联的元数据被更新。

    Methods for managing storage operations for multiple hosts coupled to dual-port solid-state disks and devices thereof
    5.
    发明授权
    Methods for managing storage operations for multiple hosts coupled to dual-port solid-state disks and devices thereof 有权

    公开(公告)号：US11640356B2

    公开(公告)日：2023-05-02

    申请号：US17831529

    申请日：2022-06-03

    Applicant: NetApp, Inc.

    Inventor： Abhijeet Gole ,  Rohit Singh

    IPC: G06F12/02 ,  G06F12/0868 ,  G06F12/0811 ,  G06F12/0873

    Abstract: Methods, non-transitory machine readable media, and computing devices that manage storage operations directed to dual-port solid state disks (SSDs) coupled to multiple hosts are disclosed. With this technology, context metadata comprising a checksum is retrieved based on a first physical address mapped, in a cached zoned namespace (ZNS) mapping table, to a logical address. The logical address is extracted from a request to read a portion of a file. A determination is made when the checksum is valid based on a comparison to identification information extracted from the request and associated with the file portion. At least the first physical address is replaced in the cached ZNS mapping table with a second physical address retrieved from an on-disk ZNS mapping table, when the determination indicates the checksum is invalid. The file portion retrieved from a dual-port SSD using the second physical address is returned to service the request.

    Methods and systems for processing write requests in a storage system
    10.
    发明授权
    Methods and systems for processing write requests in a storage system 有权

    公开(公告)号：US11803329B2

    公开(公告)日：2023-10-31

    申请号：US17456012

    申请日：2021-11-22

    Applicant: NETAPP, INC.

    Inventor： Douglas P. Doucette ,  Sushilkumar Gangadharan ,  Rohit Singh

    IPC: G06F3/06 ,  G06F12/02

    CPC classification number: G06F3/0659 ,  G06F3/0613 ,  G06F3/0688 ,  G06F12/0238 ,  G06F2212/1016

    Abstract: Methods and systems for a storage environment are provided, including generating a plurality of child (or tetris) write requests to write data for a write request using a plurality of subdivisions of a plurality of logical zones defined for a plurality of zoned solid state drives (ZNS SSDs) of a RAID array, each LZone mapped to one or more logical RAID zone (RZone) of the ZNS SSDs having a plurality of physical zones across a plurality of independent media units of each ZNS SSD; assigning a sequence number to each child (or tetris) write request corresponding to each subdivision, the sequence number indicating an order in which the child (or tetris) write requests are to be processed; and selecting, based on the assigned sequence number, one or more subdivisions for sequentially writing data to one or more RZones of the plurality of ZNS SSDs.

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