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：US20180024891A1

公开(公告)日：2018-01-25

申请号：US15722114

申请日：2017-10-02

Applicant: NetApp Inc.

Inventor： Stephen Wu ,  Prathamesh Deshpande ,  Manan Patel

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

CPC classification number: G06F11/1451 ,  G06F3/0604 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/0652 ,  G06F3/067 ,  G06F11/07 ,  G06F11/0727 ,  G06F11/0757 ,  G06F11/1438 ,  G06F11/1446 ,  G06F11/1464 ,  G06F11/1469 ,  G06F2201/84

Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.

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。