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公开(公告)号：US20200310697A1
公开(公告)日：2020-10-01
申请号：US16365956
申请日：2019-03-27
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Kumaran Nagappan , Sriram Venketaraman , Szu-Wen Kuo , Yong Eun Cho
IPC: G06F3/06
Abstract: Techniques are provided for compacting indirect blocks. For example, an object is represented as a structure comprising data blocks within which data of the object is stored and indirect blocks comprising block numbers of where the data blocks are located in storage. Block numbers within a set of indirect blocks are compacted into a compacted indirect block comprising a base block number, a count of additional block numbers after the base block number in the compacted indirect block, and a pattern of the block numbers in the compacted indirect block. The compacted indirect block is stored into memory for processing access operations to the object. Storing compacted indirect blocks into memory allows for more block numbers to be stored within memory. This improves the processing of access operations because reading the block numbers from memory is faster than loading the block numbers from disk.
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公开(公告)号：US20200159705A1
公开(公告)日：2020-05-21
申请号：US16751766
申请日：2020-01-24
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Sridevi Jantli , Anil Paul Thoppil , Cheryl Marie Thompson , Qinghua Zheng
IPC: G06F16/215 , G06F16/23 , G06F16/22
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.
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公开(公告)号：US20200089422A1
公开(公告)日：2020-03-19
申请号：US16690887
申请日：2019-11-21
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Sriram Venketaraman , Ravikanth Dronamraju , Mohit Gupta
Abstract: Techniques are provided for providing a storage abstraction layer for a composite aggregate architecture. A storage abstraction layer is utilized as an indirection layer between a file system and a storage environment. The storage abstraction layer obtains characteristic of a plurality of storage providers that provide access to heterogeneous types of storage of the storage environment (e.g., solid state storage, high availability storage, object storage, hard disk drive storage, etc.). The storage abstraction layer generates storage bins to manage storage of each storage provider. The storage abstraction layer generates a storage aggregate from the heterogeneous types of storage as a single storage container. The storage aggregate is exposed to the file system as the single storage container that abstracts away from the file system the management and physical storage details of data of the storage aggregate.
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公开(公告)号：US20180275907A1
公开(公告)日：2018-09-27
申请号：US15467293
申请日：2017-03-23
Applicant: NetApp Inc.
Inventor： Ananthan Subramanian , Sriram Venketaraman , Ravikanth Dronamraju , Mohit Gupta
CPC classification number: G06F3/0643 , G06F3/061 , G06F3/0653 , G06F3/067 , G06F3/0683 , G06F3/0685 , G06F12/0253 , G06F12/1408 , G06F16/148 , G06F2212/402
Abstract: Techniques are provided for providing a storage abstraction layer for a composite aggregate architecture. A storage abstraction layer is utilized as an indirection layer between a file system and a storage environment. The storage abstraction layer obtains characteristic of a plurality of storage providers that provide access to heterogeneous types of storage of the storage environment (e.g., solid state storage, high availability storage, object storage, hard disk drive storage, etc.). The storage abstraction layer generates storage bins to manage storage of each storage provider. The storage abstraction layer generates a storage aggregate from the heterogeneous types of storage as a single storage container. The storage aggregate is exposed to the file system as the single storage container that abstracts away from the file system the management and physical storage details of data of the storage aggregate.
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公开(公告)号：US09811259B2
公开(公告)日：2017-11-07
申请号：US14953144
申请日：2015-11-27
Applicant: NetApp, Inc.
Inventor： Manish Katiyar , Ananthan Subramanian , Ravikanth Dronamraju
IPC: G06F3/06
CPC classification number: G06F3/0604 , G06F3/0619 , G06F3/064 , G06F3/0643 , G06F3/065 , G06F3/0689
Abstract: Conventional storage filers utilize a data reading process that requires client read request messages to be suspended in the operating system while the data is retrieved from the physical storage system. Then, once the operating system retrieves the data from the physical storage system, the operating system must restart the suspended read message in order to forward the retrieved data to the client. Accordingly, the inventors have developed a system and method that allows the physical storage system's server to send the data directly to the client rather than routing back through the operating system.
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Patent Agency Ranking
86.发明申请公开(公告)号：US20170286238A1
公开(公告)日：2017-10-05
申请号：US15087401
申请日：2016-03-31
Applicant: NetApp, Inc.
Inventor： Ram Kesavan , Ananthan Subramanian , Aziz Gulbeden , Christian Compton , Jawahar Tadipatri , Bipin Tomar , Joseph Allen Brown, JR.
CPC classification number: G06F11/1662 , G06F11/1666 , G06F11/20 , G06F12/0802 , G06F17/3012 , G06F17/30194 , G06F2212/1032 , G06F2212/2024
Abstract: A method, non-transitory computer readable medium, and device that assists with caching filesystem metadata to a partner non-volatile random-access memory (NVRAM) includes caching metadata related to an incoming data modifying operation generated by a client computing device to at least one storage controller device in a cluster. A service interruption event that makes a data block present in the storage device of a hosting storage node inaccessible to the client computing device is determined for during the caching. The requested metadata block from the at least one NVRAM is retrieved when the service interruption event is determined. The cache is warmed using the retrieved metadata block from the at least one NVRAM.
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公开(公告)号：US09715348B2
公开(公告)日：2017-07-25
申请号：US14848482
申请日：2015-09-09
Applicant: NetApp, Inc.
Inventor： Subramaniam Periyagaram , Ananthan Subramanian , Manish Katiyar
CPC classification number: G06F3/0619 , G06F3/0608 , G06F3/0614 , G06F3/0641 , G06F3/065 , G06F3/067 , G06F3/0683 , G06F17/30088 , G06F17/30153
Abstract: Presented herein are mass data storage systems, file system protocols, non-transitory machine readable devices, and methods for storing data blocks in data file systems. Methods for compressing snapshot data in a data file system are disclosed which include: loading a snapshot file with one or more data blocks, the snapshot representing a state of the data file system at a point in time; determining if at least one of the snapshot data blocks is less than a predetermined byte value; responsive to a snapshot data block having a size that is less than the predetermined byte value, identifying a packed block configured to store data chunks from plural distinct snapshots and having available sufficient storage space to store the snapshot data block; and adding to the packed block the snapshot data block and lost-write context information corresponding to the snapshot data block.
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公开(公告)号：US09043614B2
公开(公告)日：2015-05-26
申请号：US14033071
申请日：2013-09-20
Applicant: NetApp, Inc.
Inventor： Ananthan Subramanian
CPC classification number: G06F21/6218 , G06F21/62 , G06F2221/2107
Abstract: A network storage server implements a method to discard sensitive data from a Persistent Point-In-Time Image (PPI). The server first efficiently identifies a dataset containing the sensitive data from a plurality of datasets managed by the PPI. Each of the plurality of datasets is read-only and encrypted with a first encryption key. The server then decrypts each of the plurality of datasets, except the dataset containing the sensitive data, with the first encryption key. The decrypted datasets are re-encrypted with a second encryption key, and copied to a storage structure. Afterward, the first encryption key is shredded.
Abstract translation: 网络存储服务器实现从持续时间点映像（PPI）中丢弃敏感数据的方法。 服务器首先从PPI管理的多个数据集中有效地识别包含敏感数据的数据集。 多个数据集中的每个数据集是只读的并用第一加密密钥加密。 服务器然后使用第一加密密钥对包含敏感数据的数据集之外的多个数据集中的每一个进行解密。 解密的数据集用第二加密密钥重新加密，并复制到存储结构。 之后，第一个加密密钥被打碎。
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公开(公告)号：US12210429B2
公开(公告)日：2025-01-28
申请号：US18229107
申请日：2023-08-01
Applicant: NETAPP, INC.
Inventor： Asif Imtiyaz Pathan , Parag Sarfare , Ananthan Subramanian , Szu-Wen Kuo , Santhosh Selvaraj , Nikhil Mattankot
Abstract: Failover methods and systems for a networked storage environment are provided. In one aspect, a read request associated with a first storage object is received, during a replay of entries of a log stored in a non-volatile memory of a second storage node for a failover operation initiated in response to a failure at a first storage node. The second storage node operates as a partner node of the first storage node. The read request is processed using a filtering data structure that is generated from the log prior to the replay and identifies each log entry. The read request is processed when the log does not have an entry associated with the read request, and when the filtering data structure includes an entry associated with the read request, the requested data is located at the non-volatile memory.
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公开(公告)号：US12210422B2
公开(公告)日：2025-01-28
申请号：US18459265
申请日：2023-08-31
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.
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