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1. 发明授权

US08504524B1 Reclaiming space from a file system 有权
公开(公告)号：US08504524B1
公开(公告)日：2013-08-06
申请号：US12702824
申请日：2010-02-09
申请人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Raghavan Sowrirajan
发明人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Raghavan Sowrirajan
IPC分类号： G06F17/00 , G06F7/00
CPC分类号： G06F17/30088 , G06F17/30067
摘要： Technologies are provided for reclaiming a file system coupled to a block device. In these technologies, a dummy file is created. The dummy file is expanded to fill a volume in the block device. A mapping of the dummy file to locations in the volume is retrieved. When the mapping of the dummy file to the locations in the volume is retrieved, corresponding space in the volume is reclaimed. This space may include the locations in the volume corresponding to the mapping of the dummy file. When this space in the volume is reclaimed, the dummy file is deleted.

2. 发明授权

US08799429B1 Boot acceleration by consolidating client-specific boot data in a data storage system 有权
标题翻译：通过在数据存储系统中整合客户端特定的引导数据来启动加速
公开(公告)号：US08799429B1
公开(公告)日：2014-08-05
申请号：US12435602
申请日：2009-05-05
申请人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Narayanaswami Ganapathy , Raghavan Sowrirajan
发明人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Narayanaswami Ganapathy , Raghavan Sowrirajan
IPC分类号： G06F15/177 , G06F9/00 , G06F9/44 , H04L29/08
CPC分类号： G06F9/4416 , H04L29/0854 , H04L29/08549 , H04L29/08729 , H04L67/1097 , H04L67/34
摘要： Technologies are described herein for accelerating the boot process of client computers by consolidating client-specific boot data in a data storage system. Boot statistics are collected for a number of client computers booting from virtual storage volumes provided by the data storage system. The boot statistics are analyzed to identify client-specific boot data stored on each of the virtual storage volumes, and the client-specific boot data is consolidated and copied into contiguous regions of a single, consolidated boot volume in the data storage system. Requests for read operations from the client computers for the client-specific boot data are then redirected to the consolidated boot volume, increasing boot performance for the client computers.
摘要翻译：本文描述了技术，用于通过在数据存储系统中整合客户端特定的引导数据来加速客户端计算机的引导过程。针对由数据存储系统提供的虚拟存储卷引导的多个客户端计算机收集引导统计信息。分析引导统计信息以识别存储在每个虚拟存储卷上的客户端特定的引导数据，并且将客户端特定的引导数据合并并复制到数据存储系统中的单个合并引导卷的连续区域中。然后将客户端计算机的针对特定于客户端的引导数据的读取操作的请求重定向到统一引导卷，从而提高客户端计算机的引导性能。

3. 发明授权

US08639878B1 Providing redundancy in a storage system 有权
标题翻译：在存储系统中提供冗余
公开(公告)号：US08639878B1
公开(公告)日：2014-01-28
申请号：US13204070
申请日：2011-08-05
申请人： Paresh Chatterjee , Ajit Narayanan , Narayanan Balakrishnan , Vijayarankan Muthirisavenugopal
发明人： Paresh Chatterjee , Ajit Narayanan , Narayanan Balakrishnan , Vijayarankan Muthirisavenugopal
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F11/2069 , G06F11/1096
摘要： A system, method, apparatus, and computer-readable medium are described for providing redundancy in a storage system. According to one method, maps are generated and stored that define stripe patterns for storing data on the storage nodes of a storage cluster. The maps are defined such that when a new storage node is added to the cluster, no movement of data occurs between two storage nodes that existed in the cluster prior to the addition of the new storage node during re-striping, and such that the data stored on each storage node is mirrored on another storage node. Storage nodes may also be designated as an owner or a peer for each storage zone. Input/output operations received at an owner node are fielded directly and mirrored to the peer node, while input/output operations received at a peer node are redirected to the owner node for processing.
摘要翻译：描述了用于在存储系统中提供冗余的系统，方法，装置和计算机可读介质。根据一种方法，生成和存储映射，其定义用于在存储集群的存储节点上存储数据的条带模式。定义这些映射，使得当将新的存储节点添加到集群时，在重新分段期间在添加新的存储节点之前不存在存在于集群中的两个存储节点之间的数据移动，并且使得数据存储在每个存储节点上的镜像在另一个存储节点上镜像。存储节点也可以被指定为每个存储区的所有者或对等体。在所有者节点处接收到的输入/输出操作被直接映射并且镜像到对等节点，而在对等节点处接收到的输入/输出操作被重定向到所有者节点进行处理。

4. 发明授权

US08117158B1 Method, system, apparatus, and computer-readable medium for taking and managing snapshots of a storage volume 有权
公开(公告)号：US08117158B1
公开(公告)日：2012-02-14
申请号：US12042710
申请日：2008-03-05
申请人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Srikumar Subramanian , Ajit Narayanan
发明人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Srikumar Subramanian , Ajit Narayanan
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F11/1451 , G06F2201/84 , Y10S707/99955
摘要： A method, system, apparatus, and computer-readable medium are provided for taking snapshots of a storage volume. According to aspects of one method, each snapshot is represented as a unique sequence number. Every fresh write access to a volume in a new snapshot lifetime is allocated a new section in the disk, called a provision, which is labeled with the sequence number. Read-modify-write operations are performed on a sub-provision level at the granularity of a chunk. Because each provision contains chunks with valid data and chunks with invalid data, a bitmap is utilized to identify the valid and invalid chunks with each provision. Provisions corresponding to different snapshots are arranged in a linked list. Branches from the linked list can be created for storing writable snapshots. Provisions may also be deleted and rolled back by manipulating the contents of the linked lists.

5. 发明授权

US07953929B1 Expanding the storage capacity of a virtualized data storage system 有权
标题翻译：扩展虚拟化数据存储系统的存储容量
公开(公告)号：US07953929B1
公开(公告)日：2011-05-31
申请号：US12721900
申请日：2010-03-11
申请人： Paresh Chatterjee , Narayanan Balakrishnan , Ajit Narayanan , Vijayarankan Muthirisavenugopal
发明人： Paresh Chatterjee , Narayanan Balakrishnan , Ajit Narayanan , Vijayarankan Muthirisavenugopal
IPC分类号： G06F12/00 , G06F11/00 , G06F17/30 , G06F15/167 , G06F15/177
CPC分类号： G06F3/0647 , G06F3/0607 , G06F3/0617 , G06F3/067 , Y10S707/99955
摘要： A system, method, apparatus, and computer-readable medium are provided for expanding the data storage capacity of a virtualized storage system, such as a storage cluster. According to one method, maps are generated and stored that define a stripe pattern for storing data on the storage nodes of a storage cluster. The stripe pattern for each map is defined such that when a storage node is added to a cluster and the data is re-striped according to the new map, only the data that will subsequently reside in the new storage node is moved to the new storage cluster during re-striping. The stripe pattern may be further defined so that during re-striping no movement of data occurs between two storage nodes that existed in the cluster prior to the addition of the new storage node. The stripe pattern may be further defined such that during re-striping an equal amount of data is moved from each of the storage nodes that existed in the cluster prior to the addition of the new storage node to the new storage node.
摘要翻译：提供了一种系统，方法，装置和计算机可读介质，用于扩展诸如存储集群之类的虚拟存储系统的数据存储容量。根据一种方法，生成和存储映射，其定义用于在存储集群的存储节点上存储数据的条带模式。定义每个地图的条纹图案，使得当将存储节点添加到群集并且根据新地图重新条带数据时，仅将随后驻留在新存储节点中的数据被移动到新存储集群在重新条纹期间。可以进一步限定条纹图案，使得在重新条纹化期间，在添加新存储节点之前，不存在存在于集群中的两个存储节点之间的数据移动。可以进一步限定条纹图案，使得在重新条纹化期间，在将新存储节点添加到新存储节点之前，等量的数据从簇中存在的每个存储节点移动。

6. 发明授权

US07373366B1 Method, system, apparatus, and computer-readable medium for taking and managing snapshots of a storage volume 有权
标题翻译：用于采集和管理存储卷的快照的方法，系统，设备和计算机可读介质
公开(公告)号：US07373366B1
公开(公告)日：2008-05-13
申请号：US11255146
申请日：2005-10-20
申请人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Srikumar Subramanian , Ajit Narayanan
发明人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Srikumar Subramanian , Ajit Narayanan
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F11/1451 , G06F2201/84 , Y10S707/99955
摘要： A method, system, apparatus, and computer-readable medium are provided for taking snapshots of a storage volume. According to aspects of one method, each snapshot is represented as a unique sequence number. Every fresh write access to a volume in a new snapshot lifetime is allocated a new section in the disk, called a provision, which is labeled with the sequence number. Read-modify-write operations are performed on a sub-provision level at the granularity of a chunk. Because each provision contains chunks with valid data and chunks with invalid data, a bitmap is utilized to identify the valid and invalid chunks with each provision. Provisions corresponding to different snapshots are arranged in a linked list. Branches from the linked list can be created for storing writable snapshots. Provisions may also be deleted and rolled back by manipulating the contents of the linked lists.
摘要翻译：提供了一种用于拍摄存储卷的快照的方法，系统，装置和计算机可读介质。根据一个方法的方面，每个快照被表示为唯一的序列号。在新的快照生命周期中，对每个新卷的读取访问将在磁盘中分配一个新的部分，称为配置，标记为序列号。读取 - 修改 - 写入操作是在子级别上以块的粒度执行的。由于每个条款包含有有效数据的块和无效数据的块，因此利用位图来识别每个条款的有效和无效的块。对应于不同快照的规定被排列在链表中。链接分支可以创建用于存储可写快照。也可以通过操纵链表的内容来删除和回滚条款。

7. 发明授权

US09183219B1 Data migration between multiple tiers in a storage system using policy based ILM for QOS 有权
公开(公告)号：US09183219B1
公开(公告)日：2015-11-10
申请号：US13449478
申请日：2012-04-18
申请人： Vijayarankan Muthirisavenugopal , Sharon Enoch , Jomy Maliakal , Paresh Chatterjee , Udita Chatterjee
发明人： Vijayarankan Muthirisavenugopal , Sharon Enoch , Jomy Maliakal , Paresh Chatterjee
IPC分类号： G06F12/08 , G06F3/0484 , G06F17/30 , G06F11/30
CPC分类号： G06F11/3048 , G06F11/3024 , G06F11/3034 , G06F11/3058 , G06F11/3409 , G06F17/30221 , G06F17/30233
摘要： Technologies are described for implementing a default migration mechanism in a storage system containing multiple tiers of storage with each tier having different cost and performance parameters. Data that is accessed more frequently can be migrated toward higher performance storage tiers while data that is accessed less frequently can be migrated towards lower performance storage tiers. Default migration behavior can be overridden by user-specified values for tier age residency policy, demotion policy, tier occupancy of volumes, and tier assignment. Data migration can be paused by the user and resumed by the user.

8. 发明授权

US07996608B1 Providing redundancy in a storage system 有权
标题翻译：在存储系统中提供冗余
公开(公告)号：US07996608B1
公开(公告)日：2011-08-09
申请号：US11551291
申请日：2006-10-20
申请人： Paresh Chatterjee , Ajit Narayanan , Narayanan Balakrishnan , Vijayarankan Muthirisavenugopal
发明人： Paresh Chatterjee , Ajit Narayanan , Narayanan Balakrishnan , Vijayarankan Muthirisavenugopal
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F11/2069 , G06F11/1096
摘要： A system, method, apparatus, and computer-readable medium are described for providing redundancy in a storage system. According to one method, maps are generated and stored that define stripe patterns for storing data on the storage nodes of a storage cluster. The maps are defined such that when a new storage node is added to the cluster, no movement of data occurs between two storage nodes that existed in the cluster prior to the addition of the new storage node during re-striping, and such that the data stored on each storage node is mirrored on another storage node. Storage nodes may also be designated as an owner or a peer for each storage zone. Input/output operations received at an owner node are fielded directly and mirrored to the peer node, while input/output operations received at a peer node are redirected to the owner node for processing.
摘要翻译：描述了用于在存储系统中提供冗余的系统，方法，装置和计算机可读介质。根据一种方法，生成和存储映射，其定义用于在存储集群的存储节点上存储数据的条带模式。定义这些映射，使得当将新的存储节点添加到集群时，在重新分段期间在添加新的存储节点之前不存在存在于集群中的两个存储节点之间的数据移动，并且使得数据存储在每个存储节点上的镜像在另一个存储节点上镜像。存储节点也可以被指定为每个存储区的所有者或对等体。在所有者节点处接收到的输入/输出操作被直接映射并且镜像到对等节点，而在对等节点处接收到的输入/输出操作被重定向到所有者节点进行处理。

9. 发明授权

US07809892B1 Asynchronous data replication 有权
标题翻译：异步数据复制
公开(公告)号：US07809892B1
公开(公告)日：2010-10-05
申请号：US11695854
申请日：2007-04-03
申请人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Suresh Grandhi , Anandh Mahalingam
发明人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Suresh Grandhi , Anandh Mahalingam
IPC分类号： G06F12/08
CPC分类号： G06F12/0804 , G06F11/2028 , G06F11/2038 , G06F11/2097
摘要： Technologies are provided herein for asynchronous data replication. A primary server maintains and exposes a storage volume for use by storage clients. The primary server receives write operations directed toward the storage volume and performs the writes on the storage volume. The primary server also creates buckets containing each of the write operations. The buckets are opened at a first point in time and closed at a second point in time that may be selected based upon the contents of the buckets, a predefined time period, or based upon an indication from an application program. The buckets are transmitted to a second server computer asynchronously. When each bucket is received completely by the second server, its contents are written to a storage volume maintained by the second computer. The buckets may be created from pages of a write-back cache utilizing a zero buffer copy mechanism.
摘要翻译：本文提供了用于异步数据复制的技术。主服务器维护并公开存储卷以供存储客户端使用。主服务器接收针对存储卷的写操作，并对存储卷执行写操作。主服务器还创建包含每个写入操作的桶。桶在第一时间点打开，并在第二时间点关闭，可以基于桶的内容，预定时间段或基于来自应用程序的指示来选择。桶被异步传输到第二台服务器计算机。当每个桶由第二服务器完全接收时，其内容被写入由第二计算机维护的存储卷。可以使用零缓冲器复制机制从回写缓存的页面创建存储桶。

10. 发明授权

US08260744B1 Method, system, apparatus, and computer-readable medium for taking and managing snapshots of a storage volume 有权
标题翻译：用于采集和管理存储卷的快照的方法，系统，设备和计算机可读介质
公开(公告)号：US08260744B1
公开(公告)日：2012-09-04
申请号：US12042705
申请日：2008-03-05
申请人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Srikumar Subramanian , Ajit Narayanan
发明人： Paresh Chatterjee , Vijayarankan Muthirisavenugopal , Srikumar Subramanian , Ajit Narayanan
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F11/1451 , G06F2201/84 , Y10S707/99955
摘要： A method, system, apparatus, and computer-readable medium are provided for taking snapshots of a storage volume. According to aspects of one method, each snapshot is represented as a unique sequence number. Every fresh write access to a volume in a new snapshot lifetime is allocated a new section in the disk, called a provision, which is labeled with the sequence number. Read-modify-write operations are performed on a sub-provision level at the granularity of a chunk. Because each provision contains chunks with valid data and chunks with invalid data, a bitmap is utilized to identify the valid and invalid chunks with each provision. Provisions corresponding to different snapshots are arranged in a linked list. Branches from the linked list can be created for storing writable snapshots. Provisions may also be deleted and rolled back by manipulating the contents of the linked lists.
摘要翻译：提供了一种用于拍摄存储卷的快照的方法，系统，装置和计算机可读介质。根据一个方法的方面，每个快照被表示为唯一的序列号。在新的快照生命周期中，对每个新卷的读取访问将在磁盘中分配一个新的部分，称为配置，标记为序列号。读取 - 修改 - 写入操作是在子级别上以块的粒度执行的。由于每个条款包含有有效数据的块和无效数据的块，因此利用位图来识别每个条款的有效和无效的块。对应于不同快照的规定被排列在链表中。链接分支可以创建用于存储可写快照。也可以通过操纵链表的内容来删除和回滚条款。

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