公开(公告)号：US10853328B2

公开(公告)日：2020-12-01

申请号：US16015730

申请日：2018-06-22

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F17/00 ,  G06F16/182

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US11960453B2

公开(公告)日：2024-04-16

申请号：US18176028

申请日：2023-02-28

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F17/00 ,  G06F16/182

CPC classification number: G06F16/1827

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US11593318B2

公开(公告)日：2023-02-28

申请号：US17100896

申请日：2020-11-22

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F17/00 ,  G06F16/182

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US20230214363A1

公开(公告)日：2023-07-06

申请号：US18176028

申请日：2023-02-28

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F16/182

CPC classification number: G06F16/1827

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US20210073185A1

公开(公告)日：2021-03-11

申请号：US17100896

申请日：2020-11-22

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F16/182

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US20180300322A1

公开(公告)日：2018-10-18

申请号：US16015730

申请日：2018-06-22

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F17/30

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US20160217175A1

公开(公告)日：2016-07-28

申请号：US14840554

申请日：2015-08-31

Applicant: NETAPP, INC.

Inventor： Amber Palekar ,  Mardiros Z. Chakalian ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F17/30

CPC classification number: G06F16/1827

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

Abstract translation: 描述异步快照无效技术。 根据各种这样的技术，可以定义增强的文件句柄结构，其包括快照生成ID，该快照生成ID将包含奇异地标识在特定时间点执行的快照的值。 在一些实施例中，当在随后的时间点重新分配给该快照的快照ID时，可以将不同的快照生成ID分配给该后续快照。 对于核心缓存，不同的快照生成ID可以消除对于与共享相同快照ID的初始和后续快照相对应的相应文件信息集的不可接受的歧义。 因此，过时的文件信息集可以从内核缓存中异步清除，从而实现改进的性能。 实施例在本上下文中不受限制。