-
公开(公告)号：US11226869B2
公开(公告)日：2022-01-18
申请号：US16852593
申请日：2020-04-20
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Ram Kesavan , Matthew Fontaine Curtis-Maury , Mark Smith
Abstract: Techniques are provided for implementing a persistent memory storage tier to manage persistent memory of a node. The persistent memory is managed by the persistent memory storage tier at a higher level within a storage operating system storage stack than a level at which a storage file system of the node is managed. The persistent memory storage tier intercepts an operation targeting the storage file system. The persistent memory storage tier retargets the operation from targeting the storage file system to targeting the persistent memory. The operation is transmitted to the persistent memory.
-
公开(公告)号：US11188266B2
公开(公告)日：2021-11-30
申请号：US16852580
申请日：2020-04-20
Applicant: NetApp Inc.
Inventor： Ram Kesavan , Matthew Fontaine Curtis-Maury , Abdul Basit , Vinay Devadas , Ananthan Subramanian
Abstract: Techniques are provided for implementing write ordering for persistent memory. A set of actions are identified for commitment to persistent memory of a node for executing an operation upon the persistent memory. An episode is created to comprise a first subset of actions of the set of actions that can be committed to the persistent memory in any order with respect to one another such that a consistent state of the persistent memory can be reconstructed in the event of a crash of the node during execution of the operation. The first subset of actions within the episode are committed to the persistent memory and further execution of the operation is blocked until the episode completes.
-
公开(公告)号：US20210326309A1
公开(公告)日：2021-10-21
申请号：US16852584
申请日：2020-04-20
Applicant: NetApp Inc.
Inventor： Rupa Natarajan , Ananthan Subramanian
Abstract: Techniques are provided for utilizing a log to free pages from persistent memory. A log is maintained to comprise a list of page block numbers of pages within persistent memory of a node to free. A page block number, of a page, within the log is identified for processing. A reference count, corresponding to a number of references to the page block number, is identified. In response to the reference count being greater than 1, the reference count is decremented and the page block number is removed from the log. In response to the reference count being 1, the page is freed from the persistent memory and the page block number is removed from the log.
-
公开(公告)号：US10983709B2
公开(公告)日：2021-04-20
申请号：US16777346
申请日：2020-01-30
Applicant: NetApp, Inc.
Inventor： Ram Kesavan , Ananthan Subramanian , Hiroshi Ishii , Abdul Basit , Joseph Brown , Rohit Singh
IPC: G06F3/06
Abstract: Methods, non-transitory computer readable media, and computing devices that execute a storage operation, without journaling the storage operation in a log, and withhold from a file system a list of freed inodes including an indication of an inode freed as a result of the execution of the storage operation. A consistency point operation is then initiated that retrieves storage operations logged as journal entries in the log and commits a result of each of the storage operations to data storage devices. A list of available inodes is updated based on the list of freed inodes, when the consistency point operation is determined to be complete. This technology reduces the number of storage operations that are required to be journaled to maintain consistency of a file system, thereby reducing the runtime resources required to facilitate the journaling and replay resource required to replay the storage operations following a recovery.
-
公开(公告)号：US10769024B2
公开(公告)日：2020-09-08
申请号：US14861310
申请日：2015-09-22
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Rimas Svarcas , Ram Kesavan , Srishylam Simharajan , John Frederick Destefano
Abstract: One or more techniques and/or systems are provided for incremental transfer with unused data block reclamation. For example, source volume of a source storage filer may have a physical replication relationship with a destination volume of a destination storage filer. Snapshots of a file system of the source volume may be used to identify new data blocks (e.g., data blocks allocated or reallocated to a new snapshot) and/or unused data blocks (e.g., data blocks of a deleted snapshot) used to incrementally update the destination volume so that the destination volume is a mirrored replication of the source volume. In this way, new data blocks may be updated and unused data blocks may be punched out (e.g., deallocated) of the destination volume during execution of an incremental update.
-
Patent Agency Ranking
公开(公告)号：US20200167084A1
公开(公告)日：2020-05-28
申请号：US16777346
申请日：2020-01-30
Applicant: NetApp, Inc.
Inventor： Ram Kesavan , Ananthan Subramanian , Hiroshi Ishii , Abdul Basit , Joseph Brown , Rohit Singh
IPC: G06F3/06
Abstract: Methods, non-transitory computer readable media, and computing devices that execute a storage operation, without journaling the storage operation in a log, and withhold from a file system a list of freed inodes including an indication of an inode freed as a result of the execution of the storage operation. A consistency point operation is then initiated that retrieves storage operations logged as journal entries in the log and commits a result of each of the storage operations to data storage devices. A list of available inodes is updated based on the list of freed inodes, when the consistency point operation is determined to be complete. This technology reduces the number of storage operations that are required to be journaled to maintain consistency of a file system, thereby reducing the runtime resources required to facilitate the journaling and replay resource required to replay the storage operations following a recovery.
-
公开(公告)号：US10552389B2
公开(公告)日：2020-02-04
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: G06F16/00 , G06F16/215 , G06F16/22 , G06F16/23
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：US10360099B2
公开(公告)日：2019-07-23
申请号：US15581531
申请日：2017-04-28
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Ganga Bhavani Kondapalli , Cheryl Marie Thompson , Kevin Daniel Varghese , Anil Paul Thoppil , Qinghua Zheng
IPC: G06F11/10 , G06F12/08 , G06F3/06 , G06F16/178
Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local 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. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.
-
公开(公告)号：US20190050416A1
公开(公告)日：2019-02-14
申请号：US16155645
申请日：2018-10-09
Applicant: NetApp, Inc.
Inventor： Ananthan Subramanian , Sandeep Yadav , Manish Katiyar
IPC: G06F17/30
Abstract: A file system layout apportions an underlying physical volume into one or more virtual volumes of a storage system. The virtual volumes having a file system and one or more files organized as buffer trees, the buffer trees utilizing indirect blocks to point to the data blocks. The indirect block at the level above the data blocks are grouped into compression groups that point to a set of physical volume block number (pvbn) block pointers.
-
公开(公告)号：US20180314725A1
公开(公告)日：2018-11-01
申请号：US15581531
申请日：2017-04-28
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Ganga Bhavani Kondapalli , Cheryl Marie Thompson , Kevin Daniel Varghese , Anil Paul Thoppil , Qinghua Zheng
CPC classification number: G06F11/1004 , G06F3/0619 , G06F12/08 , G06F16/178
Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local 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. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.
-
-
-
-
-
-
-
-
-
Search Results
167
records
(took 0.029 seconds)
