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1. 发明授权

US09710535B2 Object storage system with local transaction logs, a distributed namespace, and optimized support for user directories 有权
公开(公告)号：US09710535B2
公开(公告)日：2017-07-18
申请号：US14820471
申请日：2015-08-06
申请人： Nexenta Systems, Inc.
发明人： Alexander Aizman , Caitlin Bestler , Robert E. Novak
IPC分类号： G06F17/30 , H04L9/32
CPC分类号： G06F17/30578 , G06F17/30159 , G06F17/30174 , G06F17/30215 , G06F17/30221 , H04L9/3239 , H04L2209/34
摘要： The present invention relates to object storage systems that support hierarchical directories within a namespace manifest stored as an object. The namespace manifest is stored as namespace manifest shards that are determined based on a partial key derived from the full name of the referenced version manifest in each directory entry. Each storage server maintains a local transaction log that keeps track of changes to the namespace manifest in response to put transactions. The namespace manifest can be updated after each put transaction is acknowledged, which minimizes the number of write operations required for a put transaction. Updates to the namespace manifest are batched, distributed, and processed concurrently and in parallel by the storage servers that store the corresponding shards. This reduces the latency that would otherwise exist in the object storage cluster as a result of a put transaction. Updates to namespace manifest shards optionally occur in a batch process using MapReduce techniques.

2. 发明申请

US20160205190A1 Parallel transparent restructuring of immutable content in a distributed object storage system 审中-公开
标题翻译：在分布式对象存储系统中并行透明地重组不可变内容
公开(公告)号：US20160205190A1
公开(公告)日：2016-07-14
申请号：US14998320
申请日：2015-12-24
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Alexander Aizman , Robert E. Novak
IPC分类号： H04L29/08 , H04L12/18 , H04L12/801 , G06F17/30
CPC分类号： H04L67/1097 , H04L12/1854 , H04L12/1877 , H04L47/15 , H04L67/10 , H04L67/1095 , H04L67/28 , H04L67/42 , H04L69/04
摘要： The present disclosure provides an innovative technique for parallel transparent restructuring of immutable content in a distributed object storage system. The content restructuring technique disclosed herein may be implemented with parallel operations by multiple storage servers in a live system. The restructuring is transparent in that the original CHIT may still be used to retrieve and validate the original content, such that a client requesting the original content need not be aware that the original content has been restructured. Furthermore, the restructuring is performed while maintaining support for pre-existing immutable metadata. Other embodiments, aspects and features are also disclosed. The content remains immutable from the perspective of the end user, but still may be advantageously restructured to optimize storage efficiency.
摘要翻译：本公开提供了一种用于在分布式对象存储系统中的不可变内容的并行透明重组的创新技术。本文公开的内容重组技术可以通过在实时系统中的多个存储服务器的并行操作来实现。重组是透明的，因为原始CHIT可能仍然用于检索和验证原始内容，使得请求原始内容的客户端不需要知道原始内容已经重组。而且，在维护对先前存在的不可变元数据的支持的同时进行重组。还公开了其它实施例，方面和特征。从最终用户的观点来看，内容是不可变的，但是仍然可以有利地进行重组以优化存储效率。

3. 发明授权

US10110676B2 Parallel transparent restructuring of immutable content in a distributed object storage system 有权
公开(公告)号：US10110676B2
公开(公告)日：2018-10-23
申请号：US14998320
申请日：2015-12-24
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Alexander Aizman , Robert E. Novak
IPC分类号： H04L29/08 , G06F17/30 , H04L12/18 , H04L12/801 , H04L29/06
摘要： The present disclosure provides an innovative technique for parallel transparent restructuring of immutable content in a distributed object storage system. The content restructuring technique disclosed herein may be implemented with parallel operations by multiple storage servers in a live system. The restructuring is transparent in that the original CHIT may still be used to retrieve and validate the original content, such that a client requesting the original content need not be aware that the original content has been restructured. Furthermore, the restructuring is performed while maintaining support for pre-existing immutable metadata. Other embodiments, aspects and features are also disclosed. The content remains immutable from the perspective of the end user, but still may be advantageously restructured to optimize storage efficiency.

4. 发明授权

US09923970B2 Multicast collaborative erasure encoding and distributed parity protection 有权
公开(公告)号：US09923970B2
公开(公告)日：2018-03-20
申请号：US14832075
申请日：2015-08-21
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Alexander Aizman , Robert E. Novak
IPC分类号： G06F15/16 , H04L29/08 , H04L12/18 , G06F11/10 , H04L29/06
CPC分类号： H04L67/1097 , G06F11/1076 , G06F2211/1028 , H04L12/18 , H04L12/1854 , H04L12/1877 , H04L67/1002 , H04L67/1095 , H04L69/164
摘要： The present disclosure provides methods and systems for multicast collaborative erasure encoding and methods and systems for distributed parity protection. One embodiment relates to a method of multicast collaborative erasure encoding of a chunk stored in a distributed object storage cluster. A roll-call request is multicast to every storage server in a negotiating group for the chunk. Roll-call inventory responses are generated and multicast by every storage server in the negotiating group. The roll-call inventory responses are collected by every storage server in the negotiating group from other storage servers in the negotiating group to form a set of roll-call inventory responses. A logical evaluation of the set of roll-call inventory responses may then be performed by every storage server in the negotiating group. Other embodiments, aspects and features are also disclosed.

5. 发明授权

US09385875B2 Scalable transport with cluster-consensus rendezvous 有权
标题翻译：具有集群一致会合的可扩展传输
公开(公告)号：US09385875B2
公开(公告)日：2016-07-05
申请号：US14095855
申请日：2013-12-03
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Robert E. Novak , Alexander Aizman
IPC分类号： G06F15/16 , H04L12/18 , H04L29/08 , G06F17/30 , H04L29/06 , H04L12/801 , G06F9/46
CPC分类号： H04L12/18 , G06F9/46 , G06F17/30 , H04L12/185 , H04L12/1854 , H04L12/1877 , H04L47/15 , H04L67/06 , H04L67/1097 , H04L69/164
摘要： Embodiments disclosed herein provide advantageous methods and systems that use multicast communications via unreliable datagrams sent on a protected traffic class. These methods and systems provide effectively reliable multicast delivery while avoiding the overhead associated with point-to-point protocols. Rather than an exponential scaling of point-to-point connections (with expensive setup and teardown of the connections), the traffic from one server is bounded by linear scaling of multicast groups. In addition, the multicast rendezvous disclosed herein creates an edge-managed flow control that accounts for the dynamic state of the storage servers in the cluster, without needing centralized control, management or maintenance of state. This traffic shaping avoids the loss of data due to congestion during sustained oversubscription. Other embodiments, aspects and features are also disclosed.
摘要翻译：本文公开的实施例提供了通过在受保护的业务类上发送的不可靠数据报使用多播通信的有利的方法和系统。这些方法和系统提供有效可靠的多播传递，同时避免与点对点协议相关的开销。点对点连接的指数缩放（连接昂贵的设置和拆卸）而不是一个服务器的流量受多播组线性缩放的约束。此外，本文公开的多播会合创建边缘管理的流量控制，其考虑群集中的存储服务器的动态状态，而不需要集中控制，管理或维护状态。这种流量整形避免了在持续超额认购期间由于拥塞而导致的数据丢失。还公开了其它实施例，方面和特征。

6. 发明授权

US09385874B2 Scalable transport with client-consensus rendezvous 有权
标题翻译：可扩展的运输与客户一致的会合
公开(公告)号：US09385874B2
公开(公告)日：2016-07-05
申请号：US14095848
申请日：2013-12-03
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Robert E. Novak , Alexander Aizman
IPC分类号： G06F15/16 , H04L12/18 , H04L29/08 , G06F17/30 , H04L29/06 , H04L12/801 , G06F9/46
CPC分类号： H04L12/18 , G06F9/46 , G06F17/30 , H04L12/185 , H04L12/1854 , H04L12/1877 , H04L47/15 , H04L67/06 , H04L67/1097 , H04L69/164
摘要： Embodiments disclosed herein provide advantageous methods and systems that use multicast communications via unreliable datagrams sent on a protected traffic class. These methods and systems provide effectively reliable multicast delivery while avoiding the overhead associated with point-to-point protocols. Rather than an exponential scaling of point-to-point connections (with expensive setup and teardown of the connections), the traffic from one server is bounded by linear scaling of multicast groups. In addition, the multicast rendezvous disclosed herein creates an edge-managed flow control that accounts for the dynamic state of the storage servers in the cluster, without needing centralized control, management or maintenance of state. This traffic shaping avoids the loss of data due to congestion during sustained oversubscription. Other embodiments, aspects and features are also disclosed.
摘要翻译：本文公开的实施例提供了通过在受保护的业务类上发送的不可靠数据报使用多播通信的有利的方法和系统。这些方法和系统提供有效可靠的多播传递，同时避免与点对点协议相关的开销。点对点连接的指数缩放（连接昂贵的设置和拆卸）而不是一个服务器的流量受多播组线性缩放的约束。此外，本文公开的多播会合创建边缘管理的流量控制，其考虑群集中的存储服务器的动态状态，而不需要集中控制，管理或维护状态。这种流量整形避免了在持续超额认购期间由于拥塞而导致的数据丢失。还公开了其它实施例，方面和特征。

7. 发明授权

US09338019B2 Scalable transport method for multicast replication 有权
标题翻译：用于组播复制的可扩展传输方法
公开(公告)号：US09338019B2
公开(公告)日：2016-05-10
申请号：US14095839
申请日：2013-12-03
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Robert E. Novak , Alexander Aizman
IPC分类号： H04L12/18 , H04L29/08 , G06F17/30 , H04L29/06 , H04L12/801 , G06F9/46
CPC分类号： H04L12/18 , G06F9/46 , G06F17/30 , H04L12/185 , H04L12/1854 , H04L12/1877 , H04L47/15 , H04L67/06 , H04L67/1097 , H04L69/164
摘要： Embodiments disclosed herein provide advantageous methods and systems that use multicast communications via unreliable datagrams sent on a protected traffic class. These methods and systems provide effectively reliable multicast delivery while avoiding the overhead associated with point-to-point protocols. Rather than an exponential scaling of point-to-point connections (with expensive setup and teardown of the connections), the traffic from one server is bounded by linear scaling of multicast groups. In addition, the multicast rendezvous disclosed herein creates an edge-managed flow control that accounts for the dynamic state of the storage servers in the cluster, without needing centralized control, management or maintenance of state. This traffic shaping avoids the loss of data due to congestion during sustained oversubscription. Other embodiments, aspects and features are also disclosed.
摘要翻译：本文公开的实施例提供了通过在受保护的业务类上发送的不可靠数据报使用多播通信的有利的方法和系统。这些方法和系统提供有效可靠的多播传递，同时避免与点对点协议相关的开销。点对点连接的指数缩放（连接昂贵的设置和拆卸）而不是一个服务器的流量受多播组线性缩放的约束。此外，本文公开的多播会合创建边缘管理的流量控制，其考虑群集中的存储服务器的动态状态，而不需要集中控制，管理或维护状态。这种流量整形避免了在持续超额认购期间由于拥塞而导致的数据丢失。还公开了其它实施例，方面和特征。

8. 发明授权

US10244053B2 Multicast collaborative erasure encoding and distributed parity protection 有权
公开(公告)号：US10244053B2
公开(公告)日：2019-03-26
申请号：US15884697
申请日：2018-01-31
申请人： NEXENTA SYSTEMS, INC.
发明人： Caitlin Bestler , Alexander Aizman , Robert E. Novak
IPC分类号： G06F15/16 , H04L29/08 , H04L12/18 , G06F11/10 , H04L29/06
摘要： The present disclosure provides methods and systems for multicast collaborative erasure encoding and methods and systems for distributed parity protection. One embodiment relates to a method of multicast collaborative erasure encoding of a chunk stored in a distributed object storage cluster. A roll-call request is multicast to every storage server in a negotiating group for the chunk. Roll-call inventory responses are generated and multicast by every storage server in the negotiating group. The roll-call inventory responses are collected by every storage server in the negotiating group from other storage servers in the negotiating group to form a set of roll-call inventory responses. A logical evaluation of the set of roll-call inventory responses may then be performed by every storage server in the negotiating group. Other embodiments, aspects and features are also disclosed.

9. 发明授权

US10185730B2 Methods and systems for key-value-tuple-encoded storage 有权
公开(公告)号：US10185730B2
公开(公告)日：2019-01-22
申请号：US14821693
申请日：2015-08-08
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Robert E. Novak , Alexander Aizman
IPC分类号： G06F17/30 , H04L9/32 , G06F3/06 , H04L29/06 , G06F12/14 , H04L29/08
摘要： The present disclosure provides systems and methods for Key-Value-Tuple-encoded (KVT-encoded) object storage. In accordance with an embodiment of the invention, chunks of objects, storing payload data or metadata, are persistently stored by servers using KVT-encoded storage. Furthermore, the KVT encoding may be applied to advantageously re-structure content within a distributed object storage cluster, especially for object storage systems that allow payload references to be cached extensively. For such systems, it is of considerable value to honor (use as valid) existing chunk references after the underlying content has been re-structured. Further, the KVT encoding taught herein is completely compatible with a fully-distributed object storage cluster. One embodiment relates to a storage server that includes a persistent storage module that provides a key-value application programming interface that encodes multiple key-value-tuple (KVT) entries for one chunk. Other embodiments, aspects and features are also disclosed.

10. 发明授权

US09767130B2 Methods and systems for key sharding of objects stored in distributed storage system 有权
公开(公告)号：US09767130B2
公开(公告)日：2017-09-19
申请号：US14821697
申请日：2015-08-08
申请人： Nexenta Systems, Inc.
发明人： Caitlin Bestler , Robert E. Novak , Alexander Aizman
IPC分类号： G06F17/30 , H04L9/32 , G06F3/06 , H04L29/06 , G06F12/14 , H04L29/08
CPC分类号： G06F17/3033 , G06F3/0619 , G06F3/0641 , G06F3/0665 , G06F3/0667 , G06F3/067 , G06F3/0689 , G06F11/00 , G06F12/1408 , G06F17/30159 , H04L9/3239 , H04L9/3242 , H04L63/062 , H04L63/0807 , H04L63/0853 , H04L63/0876 , H04L67/1097 , H04L2209/24
摘要： The present disclosure also provides systems and methods for sharding objects stored in a distributed storage system. In accordance with one embodiment disclosed herein, a key sharding technique is used. Key sharding is an advantageously efficient technique when dealing with an object containing a collection of key-value records. In accordance with an embodiment of the invention, referenced chunks identified by the key shards may each store a subset of the collection of the key-value records, and the key-value records in the subset have key hashes that have a range of matching bits in common. One embodiment disclosed herein provides a method of performing a delta edit of a named object stored in a distributed storage system in which a payload of the named object is stored in key shards. Other embodiments, aspects and features are also disclosed.

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