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1. 发明授权

US08918378B1 Cloning using an extent-based architecture 有权
标题翻译：克隆使用基于范围的架构
公开(公告)号：US08918378B1
公开(公告)日：2014-12-23
申请号：US13223226
申请日：2011-08-31
申请人： Rickard E. Faith , Subramaniam Periyagaram , Sandeep Yadav , Ashish Prakash , Blake Lewis
发明人： Rickard E. Faith , Subramaniam Periyagaram , Sandeep Yadav , Ashish Prakash , Blake Lewis
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F3/0626 , G06F3/065 , G06F3/067
摘要： An extent-based storage architecture is implemented by a storage server. The storage server generates a new extent identifier for cloning a source extent identified by a source extent identifier and stored at a source data structure that includes a length value providing a length of the source extent, an offset value and a reference count value that provides a number of data containers that reference the source extent identifier. The storage server updates a data structure for a cloned version of the data container for storing the new extent identifier that points to the source extent identifier and includes an extent length value and offset value different from length value and the offset value of the source data structure.
摘要翻译：存储服务器实现基于范围的存储架构。存储服务器生成新的盘区标识符，用于克隆由源盘区标识符识别的源盘区，并存储在源数据结构中，源数据结构包括提供源盘区长度的长度值，偏移值和引用计数值，参考源盘区标识符的数据容器数。存储服务器更新用于存储指向源盘区标识符的新盘区标识符的数据容器的克隆版本的数据结构，并且包括与长度值不同的盘区长度值和偏移值以及源数据结构的偏移值。

2. 发明申请

US20080028011A1 SPACE ALLOCATION IN A WRITE ANYWHERE FILE SYSTEM 有权
标题翻译：写任意文件系统中的空间分配
公开(公告)号：US20080028011A1
公开(公告)日：2008-01-31
申请号：US11866957
申请日：2007-10-03
申请人： Douglas Doucette , Blake Lewis , John Edwards
发明人： Douglas Doucette , Blake Lewis , John Edwards
IPC分类号： G06F17/30
CPC分类号： G06F3/0605 , G06F3/0608 , G06F3/0631 , G06F3/0643 , G06F3/0644 , G06F3/0689 , G06F17/30067 , Y10S707/99943 , Y10S707/99952 , Y10S707/99953 , Y10S707/99956
摘要： A file system determines the relative vacancy of a collection of storage blocks, i.e., an “allocation area”. This is accomplished by recording an array of numbers, each of which describes the vacancy of a collection of storage blocks. The file system examines these numbers when attempting to record file blocks in relatively contiguous areas on a storage medium, such as a disk. When a request to write to disk occurs, the system determines the average vacancy of all of the allocation areas and queries the allocation areas for individual vacancy rates. The system preferably writes file blocks to the allocation areas that are above a threshold related to the average storage block vacancy of the file system.
摘要翻译：文件系统确定存储块集合的相对空位，即“分配区域”。这是通过记录一组数字来实现的，每个数组描述了一组存储块的空位。当尝试在诸如磁盘的存储介质上的相对连续的区域中记录文件块时，文件系统检查这些数字。当发出写入磁盘的请求时，系统确定所有分配区域的平均空缺，并查询各个空缺率的分配区域。系统优选地将文件块写入高于与文件系统的平均存储块空缺相关的阈值的分配区域。

3. 发明申请

US20070276878A1 System and method for providing continuous data protection 有权
标题翻译：提供连续数据保护的系统和方法
公开(公告)号：US20070276878A1
公开(公告)日：2007-11-29
申请号：US11413882
申请日：2006-04-28
申请人： Ling Zheng , Robert English , Stephen Manley , Blake Lewis
发明人： Ling Zheng , Robert English , Stephen Manley , Blake Lewis
IPC分类号： G06F17/30
CPC分类号： G06F11/1435 , G06F17/30085
摘要： A system and method provides continuous data protection using checkpoints in a write anywhere file system. During a consistency point of a write anywhere file system, freed blocks are identified and are appended to a delete log for retention. A consistency point log is updated with a new entry associated with the consistency point. If the file system needs to retrieve its state at a particular point in time, the stored blocks of the delete log may be recovered
摘要翻译：系统和方法使用写入任意文件系统中的检查点提供持续的数据保护。在写入任何文件系统的一致性点中，自由块被识别并附加到删除日志以进行保留。使用与一致性点相关联的新条目更新一致性点日志。如果文件系统需要在特定时间点检索其状态，则可以恢复存储的删除日志块

4. 发明授权

US06636879B1 Space allocation in a write anywhere file system 有权
标题翻译：空间分配在写任意文件系统
公开(公告)号：US06636879B1
公开(公告)日：2003-10-21
申请号：US09642065
申请日：2000-08-18
申请人： Douglas P. Doucette , Blake Lewis , John K. Edwards
发明人： Douglas P. Doucette , Blake Lewis , John K. Edwards
IPC分类号： G06F1730
CPC分类号： G06F3/0605 , G06F3/0608 , G06F3/0631 , G06F3/0643 , G06F3/0644 , G06F3/0689 , G06F17/30067 , Y10S707/99943 , Y10S707/99952 , Y10S707/99953 , Y10S707/99956
摘要： A method and system for improving data access of a reliable file system is provided. In a first aspect of the invention, the file system determines the relative vacancy of a collection of storage blocks, herein called an “allocation area”. This is accomplished by recording an array of binary numbers. Each binary number in the array describes the vacancy of a collection of storage blocks. The file system examines these binary numbers when attempting to record file blocks in relatively contiguous areas on a storage medium, such as a hard disk. When a request to write to disk occurs, the system determines the average vacancy of all the allocation areas and queries the allocation areas for individual vacancy rates such as sequentially. The system preferably writes file blocks to the allocation areas that are above a threshold related to the average storage block vacancy of the file system. If the file in the request to write is larger than the selected allocation area, the next allocation area above the threshold is preferably used to write the remaining blocks of the file.
摘要翻译：提供了一种用于改善可靠文件系统的数据访问的方法和系统。在本发明的第一方面，文件系统确定存储块集合的相对空位，这里称为“分配区域”。这是通过记录二进制数字的数组来实现的。阵列中的每个二进制数字描述了存储块集合的空位。当尝试在诸如硬盘的存储介质上的相对连续的区域中记录文件块时，文件系统检查这些二进制数。当写入磁盘的请求发生时，系统确定所有分配区域的平均空缺，并查询单个空缺率的分配区域，如顺序。系统优选地将文件块写入高于与文件系统的平均存储块空缺相关的阈值的分配区域。如果写入请求中的文件大于所选择的分配区域，则优选地使用高于阈值的下一个分配区域来写入文件的剩余块。

5. 发明授权

US10223375B2 Handling data extent size asymmetry during logical replication in a storage system 有权
公开(公告)号：US10223375B2
公开(公告)日：2019-03-05
申请号：US13237760
申请日：2011-09-20
申请人： Blake Lewis , John K. Edwards , Vijay Deshmukh , Kapil Kumar , Rajesh Desai
发明人： Blake Lewis , John K. Edwards , Vijay Deshmukh , Kapil Kumar , Rajesh Desai
IPC分类号： G06F17/30 , G06F3/06 , G06F11/20
摘要： A technique to name data is disclosed to allow preservation of storage efficiency over a link between a source and a destination in a replication relationship as well as in storage at the destination. The technique allows the source to send named data to the destination once and refer to it by name multiple times in the future, without having to resend the data. The technique also allows the transmission of data extents to be decoupled from the logical containers that refer to the data extents. Additionally, the technique allows a replication system to accommodate different extent sizes between replication source and destination while preserving storage efficiency.

6. 发明授权

US08600949B2 Deduplication in an extent-based architecture 有权
标题翻译：基于范围的架构中的重复数据删除
公开(公告)号：US08600949B2
公开(公告)日：2013-12-03
申请号：US13165631
申请日：2011-06-21
申请人： Subramaniam Periyagaram , Sandeep Yadav , Blake Lewis , Rickard E. Faith , Ashish Prakash , Ram Kesavan , Ananthan Subramanian
发明人： Subramaniam Periyagaram , Sandeep Yadav , Blake Lewis , Rickard E. Faith , Ashish Prakash , Ram Kesavan , Ananthan Subramanian
IPC分类号： G06F17/30
CPC分类号： G06F17/30156 , G06F3/0608 , G06F3/0641
摘要： A request is received to remove duplicate data. A log data container associated with a storage volume in a storage server is accessed. The log data container includes a plurality of entries. Each entry is identified by an extent identifier in a data structures stored in a volume associated with the storage server. For each entry in the log data container, a determination is made if the entry matches another entry in the log data container. If the entry matches another entry in the log data container, a determination is made of a donor extent and a recipient extent. If an external reference count associated with the recipient extent equals a first predetermined value, block sharing is performed for the donor extent and the recipient extent. A determination is made if the reference count of the donor extent equals a second predetermined value. If the reference count of the donor extent equals the second predetermined value, the donor extent is freed.
摘要翻译：收到请求以删除重复的数据。访问与存储服务器中的存储卷相关联的日志数据容器。日志数据容器包括多个条目。每个条目由存储在与存储服务器相关联的卷中的数据结构中的盘区标识符标识。对于日志数据容器中的每个条目，确定条目是否匹配日志数据容器中的另一个条目。如果条目与日志数据容器中的另一个条目匹配，则确定捐赠者范围和受众范围。如果与接收者范围相关联的外部参考计数等于第一预定值，则对捐赠者范围和接受者范围执行块共享。如果供体范围的参考计数等于第二预定值，则确定。如果供体范围的参考计数等于第二预定值，则供体范围被释放。

7. 发明授权

US08539008B2 Extent-based storage architecture 有权
标题翻译：基于范围的存储架构
公开(公告)号：US08539008B2
公开(公告)日：2013-09-17
申请号：US13098310
申请日：2011-04-29
申请人： Rickard E. Faith , Subramaniam Periyagaram , Sandeep Yadav , Ashish Prakash , Blake Lewis , Jeff Kimmel , Steve Daniel
发明人： Rickard E. Faith , Subramaniam Periyagaram , Sandeep Yadav , Ashish Prakash , Blake Lewis , Jeff Kimmel , Steve Daniel
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F3/064 , G06F3/061 , G06F3/0644 , G06F3/0689 , G06F17/30091 , G06F17/30203
摘要： An extent-based storage architecture is implemented by a storage server receiving a read request for an extent from a client, wherein the extent includes a group of contiguous blocks and the read request includes a file block number. The storage server retrieves an extent identifier from a first sorted data structure, wherein the storage server uses the received file block number to traverse the first sorted data structure to the extent identifier. The storage server retrieves a reference to the extent from a second sorted data structure, wherein the storage server uses the retrieved extent identifier to traverse the second sorted data structure to the reference, and wherein the second sorted data structure is global across a plurality of volumes. The storage server retrieves the extent from a storage device using the reference and returns the extent to the client.
摘要翻译：基于范围的存储架构由存储服务器实现，所述存储服务器从客户端接收对范围的读取请求，其中所述扩展区包括一组相邻块，并且所述读取请求包括文件块号。存储服务器从第一排序数据结构检索区段标识符，其中存储服务器使用接收到的文件块号来遍历第一排序数据结构到区段标识符。存储服务器从第二排序数据结构检索对范围的引用，其中存储服务器使用所检索的扩展名标识符遍历到引用的第二排序数据结构，并且其中第二排序数据结构在多个卷中是全局的。存储服务器使用引用从存储设备检索范围，并将该范围返回给客户端。

8. 发明申请

US20120278382A1 EXTENT-BASED STORAGE ARCHITECTURE 有权
标题翻译：基于EXTENT的存储架构
公开(公告)号：US20120278382A1
公开(公告)日：2012-11-01
申请号：US13098310
申请日：2011-04-29
申请人： Rickard E. Faith , Subramaniam Periyagaram , Sandeep Yadav , Ashish Prakash , Blake Lewis , Jeff Kimmel , Steve Daniel
发明人： Rickard E. Faith , Subramaniam Periyagaram , Sandeep Yadav , Ashish Prakash , Blake Lewis , Jeff Kimmel , Steve Daniel
IPC分类号： G06F15/16
CPC分类号： G06F3/064 , G06F3/061 , G06F3/0644 , G06F3/0689 , G06F17/30091 , G06F17/30203
摘要： An extent-based storage architecture is implemented by a storage server receiving a read request for an extent from a client, wherein the extent includes a group of contiguous blocks and the read request includes a file block number. The storage server retrieves an extent identifier from a first sorted data structure, wherein the storage server uses the received file block number to traverse the first sorted data structure to the extent identifier. The storage server retrieves a reference to the extent from a second sorted data structure, wherein the storage server uses the retrieved extent identifier to traverse the second sorted data structure to the reference, and wherein the second sorted data structure is global across a plurality of volumes. The storage server retrieves the extent from a storage device using the reference and returns the extent to the client.
摘要翻译：基于范围的存储架构由存储服务器实现，所述存储服务器从客户端接收对范围的读取请求，其中所述扩展区包括一组相邻块，并且所述读取请求包括文件块号。存储服务器从第一排序数据结构检索区段标识符，其中存储服务器使用接收到的文件块号来遍历第一排序数据结构到区段标识符。存储服务器从第二排序数据结构检索对范围的引用，其中存储服务器使用所检索的扩展名标识符遍历到引用的第二排序数据结构，并且其中第二排序数据结构在多个卷中是全局的。存储服务器使用引用从存储设备检索范围，并将该范围返回给客户端。

9. 发明申请

US20070245095A1 System and method for parallelized replay of an NVRAM log in a storage appliance 有权
公开(公告)号：US20070245095A1
公开(公告)日：2007-10-18
申请号：US11796687
申请日：2007-04-27
申请人： Steven Watanabe , John Edwards , Blake Lewis
发明人： Steven Watanabe , John Edwards , Blake Lewis
IPC分类号： G06F13/00
CPC分类号： G06F11/1471 , G06F11/1441
摘要： A system and method for enabling parallel replay of a backup memory log of client transaction request entries to a network storage appliance file system is provided. The backup memory is typically implemented as a non-volatile random access memory (NVRAM). An initiator establishes a swarm of messages with a plurality of transaction blocks pointing to logged request entries and related states associated therewith. The states represent the various phases of file system recovery and disk storage including a retrieval of disk information (data and meta-data), typically in the form of a LOAD, and a subsequent modify phase. The swarm is transferred to the file system for parallel disk information-retrieval in an interleaved process. Any transactions that cannot be performed due to a required prerequisite action (e.g. a prior file-create) are returned to the initiator for reloading once the prerequisite action has occurred.

10. 发明申请

US20050246401A1 Extension of write anywhere file system layout 有权
标题翻译：扩展写任意文件系统布局
公开(公告)号：US20050246401A1
公开(公告)日：2005-11-03
申请号：US10836817
申请日：2004-04-30
申请人： John Edwards , Blake Lewis , Robert English , Eric Hamilton , Peter Corbett
发明人： John Edwards , Blake Lewis , Robert English , Eric Hamilton , Peter Corbett
IPC分类号： G06F11/14 , G06F12/00 , G06F17/30
CPC分类号： G06F3/0689 , G06F3/0619 , G06F3/0665 , G06F17/30233
摘要： A file system layout apportions an underlying physical volume into one or more virtual volumes (vvols) of a storage system. The underlying physical volume is an aggregate comprising one or more groups of disks, such as RAID groups, of the storage system. The aggregate has its own physical volume block number (pvbn) space and maintains metadata, such as block allocation structures, within that pvbn space. Each vvol has its own virtual volume block number (vvbn) space and maintains metadata, such as block allocation structures, within that vvbn space. Notably, the block allocation structures of a vvol are sized to the vvol, and not to the underlying aggregate, to thereby allow operations that manage data served by the storage system (e.g., snapshot operations) to efficiently work over the vvols. The file system layout extends the file system layout of a conventional write anywhere file layout system implementation, yet maintains performance properties of the conventional implementation.
摘要翻译：文件系统布局将底层物理卷分配到存储系统的一个或多个虚拟卷（vvols）中。底层物理卷是包含存储系统的一组或多组磁盘（如RAID组）的聚合。聚合具有自己的物理卷块数（pvbn）空间，并在该pvbn空间内维护诸如块分配结构的元数据。每个vvol具有自己的虚拟卷块号（vvbn）空间，并在该vvbn空间内维护诸如块分配结构的元数据。值得注意的是，vvol的块分配结构的大小适合vvol而不是基础聚合，从而允许管理由存储系统服务的数据（例如，快照操作）的操作有效地在vvols上工作。文件系统布局扩展了常规写入任何文件布局系统实现的文件系统布局，但是保持了传统实现的性能特性。

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