公开(公告)号：US20180314719A1

公开(公告)日：2018-11-01

申请号：US15581447

申请日：2017-04-28

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Sridevi Jantli ,  Anil Paul Thoppil ,  Cheryl Marie Thompson ,  Qinghua Zheng

IPC: G06F17/30

CPC classification number: G06F16/215 ,  G06F16/22 ,  G06F16/2379

Abstract: Techniques are provided for orphan object detection, invalid sequence number detection, and asynchronous object cleanup. A storage system may store data within one or more tiers of storage, such as a storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Orphan objects, within the remote object store, that are no longer used by the storage system may be detected and/or deleted. When an aggregate of volumes is deleted, corresponding objects, within the remote object store, may be identified and/or deleted. Invalid sequence numbers (e.g., lost or corrupt sequence numbers locally maintained in a metafile) assigned to objects within the remote object store may be identified, deleted, and/or fixed.

公开(公告)号：US20180074725A1

公开(公告)日：2018-03-15

申请号：US15814013

申请日：2017-11-15

Applicant: NETAPP, INC.

Inventor： Ananthan Subramanian ,  Cheryl Marie Thompson ,  Sunitha Sunil Sankar

IPC: G06F3/06 ,  G06F12/0804

CPC classification number: G06F3/0611 ,  G06F3/0647 ,  G06F3/0685 ,  G06F12/0804 ,  G06F2212/1024 ,  G06F2212/1032 ,  G06F2212/608

Abstract: Methods and systems for a networked system are provided. One method includes receiving a request by a processor to transfer a data block stored at a first storage tier to the second storage tier; using an object staging data structure to determine that an object is available for transferring the data block from the first storage tier to the second storage tier. The object staging data structure an indicator providing a status for the object and an object length and an offset value of a transfer log indicating where information regarding the data block is stored. The method further includes updating an address of the storage tier where the information regarding data block is stored at the transfer log; increasing the object length and the offset value at the object staging data structure; and creating the object at the second tier.

公开(公告)号：US09792043B2

公开(公告)日：2017-10-17

申请号：US14994924

申请日：2016-01-13

Applicant: NETAPP, INC.

Inventor： Ananthan Subramanian ,  Anil Paul Thoppil ,  Sunitha Sunil Sankar ,  Cheryl Marie Thompson

IPC: G06F3/06 ,  G06F12/02

CPC classification number: G06F3/0608 ,  G06F3/0619 ,  G06F3/0647 ,  G06F3/065 ,  G06F3/0652 ,  G06F3/0665 ,  G06F3/0667 ,  G06F3/067 ,  G06F3/0685 ,  G06F12/0253 ,  G06F12/0261

Abstract: Methods and systems for a networked storage environment are provided. One method includes scanning a first data structure by a processor executing instructions out of a memory for a storage operating system to determine whether any data chunk of a first object stored at a first storage tier is referenced by the storage operating; when the storage operating system references a certain number of data chunks, the processor using an object staging data structure to identify a second object that is in the process of being built with space for transferring the certain number of data chunks from the first object to the second object; and updating information regarding the second object at a transfer log with location information of the certain number of data chunks at the first storage tier.

公开(公告)号：US20170199675A1

公开(公告)日：2017-07-13

申请号：US14994924

申请日：2016-01-13

Applicant: NETAPP, INC.

Inventor： Ananthan Subramanian ,  Anil Paul Thoppil ,  Sunitha Sunil Sankar ,  Cheryl Marie Thompson

IPC: G06F3/06 ,  G06F12/02

CPC classification number: G06F3/0608 ,  G06F3/0619 ,  G06F3/0647 ,  G06F3/065 ,  G06F3/0652 ,  G06F3/0665 ,  G06F3/0667 ,  G06F3/067 ,  G06F3/0685 ,  G06F12/0253 ,  G06F12/0261

Abstract: Methods and systems for a networked storage environment are provided. One method includes scanning a first data structure by a processor executing instructions out of a memory for a storage operating system to determine whether any data chunk of a first object stored at a first storage tier is referenced by the storage operating; when the storage operating system references a certain number of data chunks, the processor using an object staging data structure to identify a second object that is in the process of being built with space for transferring the certain number of data chunks from the first object to the second object; and updating information regarding the second object at a transfer log with location information of the certain number of data chunks at the first storage tier.