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    FILE LOCATION FOR DISTRIBUTED DIRECTORY
    141.
    发明申请
    FILE LOCATION FOR DISTRIBUTED DIRECTORY 有权

    公开(公告)号：US20220107920A1

    公开(公告)日：2022-04-07

    申请号：US17552603

    申请日：2021-12-16

    Applicant: Pure Storage, Inc.

    Inventor： John Hayes ,  Robert Lee ,  Igor Ostrovsky ,  Peter Vajgel

    IPC: G06F16/182 ,  G06F16/18

    Abstract: A method for distribution of directories in a storage system is provided. The method includes distributing information, regarding location in the storage system of a plurality of files in a directory, to a plurality of owners in a plurality of storage nodes of the storage system, wherein ownership of differing subsets of the plurality of files of the directory is distributed among differing owners in differing storage nodes. The method includes receiving a request for location information in the storage system of a file of the plurality of files in the directory and determining, based on a file name of the file and an identity of the directory, which of the plurality of owners has ownership of the file and the location information for the file.

    Intelligently sizing high latency I/O requests in a storage environment
    142.
    发明授权
    Intelligently sizing high latency I/O requests in a storage environment 有权

    公开(公告)号：US11275509B1

    公开(公告)日：2022-03-15

    申请号：US16266734

    申请日：2019-02-04

    Applicant: PURE STORAGE, INC.

    Inventor： John Colgrove ,  Craig Harmer ,  John Hayes ,  Bo Hong ,  Ethan Miller ,  Feng Wang

    IPC: G06F13/14 ,  G06F3/06 ,  G06F11/07 ,  G06F11/10

    Abstract: A computer system comprising: a data storage medium comprising a plurality of storage devices configured to store data; and a data storage controller coupled to the data storage medium; wherein the data storage controller is configured to: receive read and write requests targeted to the data storage medium; schedule said read and write requests for processing by said plurality of storage devices; detect a given device of the plurality of devices is exhibiting an unscheduled behavior comprising variable performance by one or more of the plurality of storage devices, wherein the variable performance comprises at least one of a relatively high response latency or relatively low throughput; and schedule one or more reactive operations in response to detecting the occurrence of the unscheduled behavior, said one or more reactive operations being configured to cause the given device to enter a known state.

    Committed transactions in a storage system
    143.
    发明授权
    Committed transactions in a storage system 有权

    公开(公告)号：US11231956B2

    公开(公告)日：2022-01-25

    申请号：US16200310

    申请日：2018-11-26

    Applicant: PURE STORAGE, INC.

    Inventor： John Hayes ,  Brian Gold ,  Shantanu Gupta ,  Robert Lee ,  Hari Kannan

    IPC: G06F16/00 ,  G06F9/46 ,  G06F16/10 ,  G06F13/16 ,  G06F3/06 ,  G06F12/0868 ,  G06F12/0802

    Abstract: A method for a transactional commit in a storage unit is provided. The method includes receiving a logical record from a storage node into a transaction engine of a storage unit of the storage node and writing the logical record into a data structure of the transaction engine. The method includes writing, to a command queue of the transaction engine, an indication to perform an atomic update using the logical record and transferring each portion of the logical record from the data structure of the transaction engine to non-persistent memory of the storage unit as a committed transaction. A storage unit for a storage system is also provided.

    DATA REBUILD INDEPENDENT OF ERROR DETECTION
    144.
    发明申请
    DATA REBUILD INDEPENDENT OF ERROR DETECTION 有权

    公开(公告)号：US20210397525A1

    公开(公告)日：2021-12-23

    申请号：US17357191

    申请日：2021-06-24

    Applicant: Pure Storage, Inc.

    Inventor： John Hayes ,  John Colgrove ,  Robert Lee ,  Joshua Robinson ,  Rusty Sears

    IPC: G06F11/20 ,  G06F11/10

    Abstract: A method for proactively rebuilding user data in a plurality of storage nodes of a storage cluster in a single chassis is provided. The method includes distributing user data and metadata throughout the plurality of storage nodes such that the plurality of storage nodes can read the user data, using erasure coding, despite loss of two of the plurality of storage nodes. The method includes determining to rebuild the user data for one of the plurality of storage nodes in the absences of an error condition. The method includes rebuilding the user data for the one of the plurality of storage nodes. A plurality of storage nodes within a single chassis that can proactively rebuild the user data stored within the storage nodes is also provided.

    Copying data without accessing the data
    145.
    发明授权
    Copying data without accessing the data 有权

    公开(公告)号：US11099769B1

    公开(公告)日：2021-08-24

    申请号：US16788771

    申请日：2020-02-12

    Applicant: PURE STORAGE, INC.

    Inventor： John Colgrove ,  Ethan Miller ,  John Hayes ,  Cary Sandvig ,  Christopher Golden ,  Jianting Cao ,  Grigori Inozemtsev

    IPC: G06F3/06

    Abstract: A system and method for performing copy offload operations. When a copy offload operation from a first volume (pointing to a first medium) to a second volume (pointing to a second medium) is requested, the copy offload operation is performed without accessing the data being copied. A third medium is created, and the first medium is recorded as the underlying medium of the third medium. The first volume is re-pointed to the third medium. Also, a fourth medium is created, the second volume is re-pointed to the fourth medium, and the second medium is recorded as the underlying medium of the targeted range of the fourth medium. All other ranges of the fourth medium have the second medium as their underlying medium.

    PARALLEL UPDATE TO MAINTAIN COHERENCY
    149.
    发明申请
    PARALLEL UPDATE TO MAINTAIN COHERENCY 审中-公开

    公开(公告)号：US20200341646A1

    公开(公告)日：2020-10-29

    申请号：US16925874

    申请日：2020-07-10

    Applicant: PURE STORAGE, INC.

    Inventor： Brian Gold ,  John Hayes ,  Robert Lee

    IPC: G06F3/06 ,  G06F12/14 ,  G06F12/02

    Abstract: A method for updates in a storage system is provided. The method includes writing identifiers, associated with data to be stored, to storage units of the storage system and writing trim records indicative of identifiers that are allowed to not exist in the storage system to the storage units. The method includes determining whether stored data corresponding to records of identifiers is valid based on the records of the identifiers and the trim records.

    Deduplicating patterned data in a storage system
    150.
    发明授权
    Deduplicating patterned data in a storage system 有权

    公开(公告)号：US10783131B1

    公开(公告)日：2020-09-22

    申请号：US15861279

    申请日：2018-01-03

    Applicant: Pure Storage, Inc.

    Inventor： Marco Sanvido ,  Richard Hankins ,  John Hayes ,  Steve Hodgson ,  Feng Wang ,  Sergey Zhuravlev ,  Andrew Kleinerman

    IPC: G06F16/22 ,  G06F3/06

    Abstract: A system and method for efficiently storing data in a storage system. A data storage subsystem includes multiple data storage locations on multiple storage devices in addition to at least one mapping table. A data storage controller determines whether data to store in the storage subsystem has one or more patterns of data intermingled with non-pattern data within an allocated block. Rather than store the one or more pattern on the storage devices, the controller stores information in a header on the storage devices. The information includes at least an offset for the first instance of a pattern, a pattern length, and an identification of the pattern. The data may be reconstructed for a corresponding read request from the information stored in the header.

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