公开(公告)号：US20140173198A1

公开(公告)日：2014-06-19

申请号：US14137084

申请日：2013-12-20

Applicant: NetApp, Inc.

Inventor： James Leong ,  Rajesh Sundaram ,  Douglas P. Doucette ,  Scott Schoenthal ,  Stephen H. Strange ,  Srinivasan Viswanathan

IPC: G06F3/06

CPC classification number: G06F3/0601 ,  G06F3/061 ,  G06F3/0611 ,  G06F3/0655 ,  G06F3/0659 ,  G06F3/0689 ,  G06F9/4881 ,  G06F11/2087

Abstract: A data access request to a file system is decomposed into a plurality of lower-level I/O tasks. A logical combination of physical storage components is represented as a hierarchical set of objects. A parent I/O task is generated from a first object in response to the data access request. A child I/O task is generated from a second object to implement a portion of the parent I/O task. The parent I/O task is suspended until the child I/O task completes. The child I/O task is executed in response to an occurrence of an event that a resource required by the child I/O task is available. The parent I/O task is resumed upon an event indicating completion of the child I/O task. Scheduling of any child I/O task is not conditional on execution of the parent I/O task, and a state diagram regulates the child I/O tasks.

Abstract translation: 对文件系统的数据访问请求被分解成多个较低级的I / O任务。 物理存储组件的逻辑组合被表示为一组分层对象。 响应于数据访问请求，从第一对象生成父I / O任务。 从第二个对象生成子I / O任务，以实现父I / O任务的一部分。 父I / O任务被暂停，直到子I / O任务完成。 响应于发生子I / O任务所需的资源可用的事件，执行子I / O任务。 在指示完成子I / O任务的事件后，将恢复父I / O任务。 任何子I / O任务的调度不是执行父I / O任务的条件，而状态图则规定了子I / O任务。

公开(公告)号：US20240201884A1

公开(公告)日：2024-06-20

申请号：US18588112

申请日：2024-02-27

Applicant: NetApp, Inc.

Inventor： Rohit Shankar SINGH ,  Douglas P. Doucette ,  Abhijeet Prakash Gole ,  Sushilkumar Gangadharan

IPC: G06F3/06

CPC classification number: G06F3/0644 ,  G06F3/0604 ,  G06F3/0659 ,  G06F3/0689

Abstract: The disclosed technology relates determining a first subset of a plurality drives having a first zone size and a second subset of the plurality of drives having a second zone size different from the first zone size, within a redundant array of independent disks (RAID) group. A prevailing zone size between the first zone size and the second zone size is determined. One or more logical zones within the determined first subset of the plurality of drives and the determined second subset of the plurality of drives for a received input-output operation is reserved based on the determined prevailing zone size. The received input-output operation is completed within the reserved one or more logical zones within the determined first subset of the plurality of drives and the determined second subset of the plurality of drives

公开(公告)号：US20230333740A1

公开(公告)日：2023-10-19

申请号：US18343149

申请日：2023-06-28

Applicant: NetApp, Inc.

Inventor： Rohit Shankar Singh ,  Douglas P. Doucette ,  Abhijeet Prakash Gole ,  Prathamesh Deshpande

IPC: G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/0631 ,  G06F3/0679

Abstract: The disclosed technology relates to managing input-output operation in a zoned storage system includes identifying a first physical zone and a second physical zone within a zoned namespace solid-state drive associated with a logical zone to perform a received write operation. Data to be written in the received write operation is temporarily staged in a zone random write area associated with the identified second physical zone. Based a storage threshold of the zone random write area, a determination is made regarding when to transfer temporarily staged data to be written area to the identified second physical zone. When the storage threshold of the zone random write area determined to have exceeded, temporarily staged data to be written is transferred to the identified second physical zone.

公开(公告)号：US20230325102A1

公开(公告)日：2023-10-12

申请号：US18332304

申请日：2023-06-09

Applicant: NetApp, Inc.

Inventor： ROHIT SHANKAR SINGH ,  Douglas P. Doucette ,  Abhijeet Prakash Gole ,  Sushikumar Gangadharan

IPC: G06F3/06

CPC classification number: G06F3/0644 ,  G06F3/0689 ,  G06F3/0659 ,  G06F3/0604

Abstract: The disclosed technology relates determining a first subset of a plurality drives having a first zone size and a second subset of the plurality of drives having a second zone size different from the first zone size, within a redundant array of independent disks (RAID) group. A prevailing zone size between the first zone size and the second zone size is determined. One or more logical zones within the determined first subset of the plurality of drives and the determined second subset of the plurality of drives for a received input-output operation is reserved based on the determined prevailing zone size. The received input-output operation is completed within the reserved one or more logical zones within the determined first subset of the plurality of drives and the determined second subset of the plurality of drives

公开(公告)号：US20210334025A1

公开(公告)日：2021-10-28

申请号：US16857919

申请日：2020-04-24

Applicant: NetApp, Inc.

Inventor： Rohit Shankar Singh ,  Douglas P. Doucette ,  Abhijeet Prakash Gole ,  Sushilkumar Gangadharan

IPC: G06F3/06

Abstract: The disclosed technology relates determining a first subset of a plurality drives having a first zone size and a second subset of the plurality of drives having a second zone size different from the first zone size, within a redundant array of independent disks (RAID) group. A prevailing zone size between the first zone size and the second zone size is determined. One or more logical zones within the determined first subset of the plurality of drives and the determined second subset of the plurality of drives for a received input-output operation is reserved based on the determined prevailing zone size. The received input-output operation is completed within the reserved one or more logical zones within the determined first subset of the plurality of drives and the determined second subset of the plurality of drives

公开(公告)号：US11860791B2

公开(公告)日：2024-01-02

申请号：US16857995

申请日：2020-04-24

Applicant: NetApp, Inc.

Inventor： Abhijeet Prakash Gole ,  Rohit Shankar Singh ,  Douglas P. Doucette ,  Ratnesh Gupta ,  Sourav Sen ,  Prathamesh Deshpande

IPC: G06F12/10

CPC classification number: G06F12/10 ,  G06F2212/657

Abstract: The disclosed technology relates to determining physical zone data within a zoned namespace solid state drive (SSD), associated with logical zone data included in a first received input-output operation based on a mapping data structure within a namespace of the zoned namespace SSD. A second input-output operation specific to the determined physical zone data is generated wherein the second input-output operation and the received input-output operation is of a same type. The generated second input-output operation is completed using the determined physical zone data within the zoned namespace SSD.

公开(公告)号：US11789611B2

公开(公告)日：2023-10-17

申请号：US16858019

申请日：2020-04-24

Applicant: NetApp, Inc.

Inventor： Rohit Shankar Singh ,  Douglas P. Doucette ,  Abhijeet Prakash Gole ,  Prathamesh Deshpande

IPC: G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/0631 ,  G06F3/0679

Abstract: The disclosed technology relates to managing input-output operation in a zoned storage system includes identifying a first physical zone and a second physical zone within a zoned namespace solid-state drive associated with a logical zone to perform a received write operation. Data to be written in the received write operation is temporarily staged in a zone random write area associated with the identified second physical zone. Based a storage threshold of the zone random write area, a determination is made regarding when to transfer temporarily staged data to be written area to the identified second physical zone. When the storage threshold of the zone random write area determined to have exceeded, temporarily staged data to be written is transferred to the identified second physical zone.

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.

公开(公告)号：US20210334006A1

公开(公告)日：2021-10-28

申请号：US16858019

申请日：2020-04-24

Applicant: NetApp, Inc.

Inventor： Rohit Shankar Singh ,  Douglas P. Doucette ,  Abhijeet Prakash Gole ,  Prathamesh Deshpande

IPC: G06F3/06

Abstract: The disclosed technology relates to managing input-output operation in a zoned storage system includes identifying a first physical zone and a second physical zone within a zoned namespace solid-state drive associated with a logical zone to perform a received write operation. Data to be written in the received write operation is temporarily staged in a zone random write area associated with the identified second physical zone. Based a storage threshold of the zone random write area, a determination is made regarding when to transfer temporarily staged data to be written area to the identified second physical zone. When the storage threshold of the zone random write area determined to have exceeded, temporarily staged data to be written is transferred to the identified second physical zone.

公开(公告)号：US20240045807A1

公开(公告)日：2024-02-08

申请号：US18380427

申请日：2023-10-16

Applicant: NetApp, Inc.

Inventor： Abhijeet Prakash Gole ,  Rohit Shankar Singh ,  Douglas P. Doucette ,  Ratnesh Gupta ,  Sourav Sen ,  Prathamesh Deshpande

IPC: G06F12/10

CPC classification number: G06F12/10 ,  G06F2212/657

Abstract: The disclosed technology relates to determining physical zone data within a zoned namespace solid state drive (SSD), associated with logical zone data included in a first received input-output operation based on a mapping data structure within a namespace of the zoned namespace SSD. A second input-output operation specific to the determined physical zone data is generated wherein the second input-output operation and the received input-output operation is of a same type. The generated second input-output operation is completed using the determined physical zone data within the zoned namespace SSD.