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31. 发明申请

US20050065985A1 Organization of read-write snapshot copies in a data storage system 有权
标题翻译：在数据存储系统中组织读写快照副本
公开(公告)号：US20050065985A1
公开(公告)日：2005-03-24
申请号：US10668783
申请日：2003-09-23
申请人： Himabindu Tummala , Philippe Armangau
发明人： Himabindu Tummala , Philippe Armangau
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30067 , Y10S707/99953 , Y10S707/99955
摘要： A file system maintains a series of read-only snapshot copies of a production file system. A read-write snapshot copy is created based on a selected read-only snapshot copy by maintaining a set of save volume blocks of new data of the read-write snapshot copy. A block of new data is written to the read-write snapshot copy by allocating a save volume block and writing to the save volume block. A specified block is read from the read-write snapshot copy by checking whether there is a respective save volume block allocated to the specified block, and if so, reading from the respective save volume block, and if not, reading from the read-only snapshot copy upon which the read-write snapshot copy is based. The read-write snapshot copy can be refreshed with a specified read-only snapshot copy. The production file can be restored with a specified read-write snapshot copy.
摘要翻译：文件系统维护生产文件系统的一系列只读快照副本。通过维护读写快照副本的新数据的一组存储卷块，基于所选的只读快照副本创建读写快照副本。通过分配一个保存音量块并写入保存音量块，将新的数据块写入读写快照副本。通过检查是否存在分配给指定块的相应保存卷块，从读写快照副本中读取指定的块，如果是，请从相应的保存卷块读取，如果没有读取，则从只读读写快照副本所基于的快照副本。读写快照副本可以使用指定的只读快照副本进行刷新。可以使用指定的读写快照副本还原生产文件。

32. 发明授权

US06549992B1 Computer data storage backup with tape overflow control of disk caching of backup data stream 有权
标题翻译：计算机数据存储备份与磁带溢出控制磁盘缓存的备份数据流
公开(公告)号：US06549992B1
公开(公告)日：2003-04-15
申请号：US09453241
申请日：1999-12-02
申请人： Philippe Armangau , Scott R. Dunham
发明人： Philippe Armangau , Scott R. Dunham
IPC分类号： G06F1216
CPC分类号： G06F11/1456 , G06F2201/84 , Y10S707/99953 , Y10S707/99955
摘要： A data storage system is constructed to rapidly respond to a backup request by streaming backup data from primary storage to tape. It is desirable to permit the data to be removed from the primary storage at a faster rate than it can be written to tape. The backup data is buffered in a memory buffer, and when the memory buffer becomes substantially full, a portion of the backup data is buffered in disk storage. When the memory buffer becomes substantially empty, the portion of the backup data in the disk storage is written to tape. In a preferred embodiment, the memory buffer is in random access memory of a data mover computer that transfers the backup data from primary storage to a tape library unit. When the memory buffer becomes full, the data mover stores the overflow in a cached disk storage subsystem. When the memory buffer becomes empty, the data mover retrieves the overflow from the cached disk storage subsystem and transmits the overflow to the tape library unit. In this fashion, the sequence of data tracks as stored on the tape can be different from the sequence of data tracks as stored in the primary storage. To facilitate restoration of the primary storage with a backup version, the data tracks as stored in records on the tape are identified by a track number included in each record on the tape.
摘要翻译：构建数据存储系统以通过将备份数据从主存储流传输到磁带来快速响应备份请求。期望允许以比写入磁带的速度更快的速率从主存储器移除数据。备份数据被缓冲在内存缓冲区中，而当内存缓冲区基本已满时，备份数据的一部分被缓存在磁盘存储器中。当内存缓冲区基本为空时，磁盘存储器中备份数据的一部分被写入磁带。在优选实施例中，存储器缓冲器是数据移动器计算机的随机存取存储器，其将备份数据从主存储器传送到磁带库单元。当内存缓冲区已满时，数据移动器将溢出存储在缓存的磁盘存储子系统中。当内存缓冲区为空时，数据移动器从缓存的磁盘存储子系统检索溢出，并将溢出传输到磁带库单元。以这种方式，存储在磁带上的数据磁道序列可以不同于存储在主存储器中的数据磁道序列。为了便于使用备份版本恢复主存储，磁带上记录中存储的数据轨迹由磁带上每个记录中包含的磁道号标识。

33. 发明授权

US06434681B1 Snapshot copy facility for a data storage system permitting continued host read/write access 有权
标题翻译：用于数据存储系统的快照复制设备，允许继续主机读/写访问
公开(公告)号：US06434681B1
公开(公告)日：2002-08-13
申请号：US09452964
申请日：1999-12-02
申请人： Philippe Armangau
发明人： Philippe Armangau
IPC分类号： G06F1216
CPC分类号： G06F11/1466 , G06F2201/84
摘要： A snapshot copy of a production data set is maintained while a host may continue write access to the production data set. The data storage system responds to a host request to write to a storage location of the production data set by checking whether or not the storage-location has been modified since the time when the snapshot copy was created, and upon finding that the storage location of the production data set has not been modified, copying data from the storage location of the production data set to an allocated storage location of the snapshot copy, and after copying data from the storage location of the production data set to the allocated storage location of the snapshot copy, performing the write operation upon the storage location of the production data set. In the preferred implementation, the data storage system allocates to the snapshot copy a bit map to indicate storage locations in the production data set that have been modified, and a list of pointers to allocated storage locations for the snapshot copy. The snapshot copy facility is useful so that a host write operation upon a storage location being backed up need not be delayed until original data in the storage location is written to secondary storage. The snapshot copy facility is also useful for other applications such as transaction processing and debugging.
摘要翻译：当主机可以继续对生产数据集的写入访问时，维护生产数据集的快照副本。数据存储系统响应主机请求，以写入生产数据集的存储位置，通过检查存储位置自创建快照拷贝的时间是否已被修改，并且在发现存储位置生产数据集未被修改，将数据从生产数据集的存储位置复制到快照拷贝的分配的存储位置，并且在将数据从生产数据集的存储位置复制到分配的存储位置之后快照复制，在生产数据集的存储位置执行写入操作。在优选实施方式中，数据存储系统向快照副本分配位图以指示已经修改的生产数据集中的存储位置以及用于快照副本的分配的存储位置的指针列表。快照复制设施是有用的，因此在备份存储位置时的主机写入操作不需要延迟，直到存储位置中的原始数据被写入辅助存储器。快照复制功能对于其他应用程序（如事务处理和调试）也是有用的。

34. 发明授权

US09519590B1 Managing global caches in data storage systems 有权
标题翻译：管理数据存储系统中的全局缓存
公开(公告)号：US09519590B1
公开(公告)日：2016-12-13
申请号：US13533311
申请日：2012-06-26
申请人： Philippe Armangau , Christopher Seibel
发明人： Philippe Armangau , Christopher Seibel
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28 , G06F12/08 , G06F12/12
CPC分类号： G06F12/0866 , G06F12/0864 , G06F12/0871 , G06F12/122 , G06F12/123 , G06F17/30 , G06F2212/281 , G06F2212/463 , G06F2212/466 , H04L67/2842
摘要： A method is used in managing global caches in data storage systems. A cache entry of a global cache of a data storage system is accessed upon receiving a request to perform an I/O operation on a storage object. The cache entry is associated with the storage object. Accessing the cache entry includes holding a reference to the cache entry. A determination is made as to whether the I/O operation is associated with a sequential access. Based on the determination, releasing the reference to the cache entry is delayed.
摘要翻译：一种方法用于管理数据存储系统中的全局缓存。在接收到对存储对象执行I / O操作的请求时，访问数据存储系统的全局缓存的缓存条目。缓存条目与存储对象相关联。访问高速缓存条目包括保存对高速缓存条目的引用。确定I / O操作是否与顺序访问相关联。基于该确定，释放对高速缓存条目的引用被延迟。

35. 发明授权

US09135123B1 Managing global data caches for file system 有权
标题翻译：管理文件系统的全局数据缓存
公开(公告)号：US09135123B1
公开(公告)日：2015-09-15
申请号：US13339309
申请日：2011-12-28
申请人： Philippe Armangau , Jean-Pierre Bono , Sitaram Pawar , Christopher Seibel , Yubing Wang
发明人： Philippe Armangau , Jean-Pierre Bono , Sitaram Pawar , Christopher Seibel , Yubing Wang
IPC分类号： G06F13/14 , G06F11/14 , G06F17/30
CPC分类号： G06F11/1471 , G06F17/30132 , G06F17/30185
摘要： A method is used in managing global data caches for file systems. Space is allocated in a volatile memory of a data storage system to a global data cache that is configured to store a set of data objects for a plurality of different file systems. The set of data objects is accessed by the plurality of different file systems. Contents of a file of a file system are stored in a data object in the global data cache upon receiving a write I/O request for the file. A copy of the data object and information for the data object are stored in a persistent journal that is stored in a non-volatile memory of the data storage system. Contents of the file are updated on a storage device based on the data object stored in the global data cache and information stored in the persistent journal.
摘要翻译：一种方法用于管理文件系统的全局数据高速缓存。空间被分配在数据存储系统的易失性存储器中，被配置为存储多个不同文件系统的一组数据对象的全局数据高速缓存。该组数据对象被多个不同的文件系统访问。文件系统的文件的内容在接收到该文件的写入I / O请求时被存储在全局数据高速缓存中的数据对象中。数据对象的副本和数据对象的信息被存储在存储在数据存储系统的非易失性存储器中的持久期刊中。基于存储在全局数据高速缓存中的数据对象和存储在持久期刊中的信息，在存储设备上更新文件的内容。

36. 发明授权

US08972656B1 Managing accesses to active-active mapped logical volumes 有权
标题翻译：管理对主动 - 映射逻辑卷的访问
公开(公告)号：US08972656B1
公开(公告)日：2015-03-03
申请号：US13629835
申请日：2012-09-28
申请人： Philippe Armangau , Christopher Seibel , Jean-Pierre Bono , Dennis Thomas Duprey
发明人： Philippe Armangau , Christopher Seibel , Jean-Pierre Bono , Dennis Thomas Duprey
IPC分类号： G06F12/08 , G06F3/06
CPC分类号： G06F3/067 , G06F3/061 , G06F3/0613 , G06F3/0635 , G06F3/0665 , G06F3/0689
摘要： A method is used in managing accesses to active-active mapped logical volumes. A portion of a mapped logical volume associated with an I/O request is determined. Based on the determination, a set of storage processor paths for accessing the mapped logical volume is determined. The I/O request is sent using a storage processor path from the set of storage processor paths for accessing the mapped logical volume.
摘要翻译：一种方法用于管理对主动映射逻辑卷的访问。确定与I / O请求相关联的映射逻辑卷的一部分。基于该确定，确定用于访问映射的逻辑卷的一组存储处理器路径。使用存储处理器路径的存储处理器路径发送I / O请求，用于访问映射的逻辑卷。

37. 发明授权

US08943282B1 Managing snapshots in cache-based storage systems 有权
标题翻译：管理基于缓存的存储系统中的快照
公开(公告)号：US08943282B1
公开(公告)日：2015-01-27
申请号：US13433636
申请日：2012-03-29
申请人： Philippe Armangau , Jean-Pierre Bono , Sitaram Pawar , Christopher Seibel , Yubing Wang
发明人： Philippe Armangau , Jean-Pierre Bono , Sitaram Pawar , Christopher Seibel , Yubing Wang
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F17/30088
摘要： A method is used in managing snapshot in cache-based storage systems. A request to create a snapshot of a data object is received. A portion of the data object is cached in a global cache. The data object is associated with a mapping object. The mapping object manages access to the portion of the data object. A snapshot of the data object is created. A snapshot mapping object is associated with the snapshot of the data object. The snapshot mapping object includes a link to the mapping object. The snapshot mapping object is a version of the mapping object and shares the portion of the data object cached in the global cache.
摘要翻译：一种方法用于管理基于缓存的存储系统中的快照。接收到创建数据对象快照的请求。数据对象的一部分被缓存在全局高速缓存中。数据对象与映射对象相关联。映射对象管理对数据对象的部分的访问。创建数据对象的快照。快照映射对象与数据对象的快照相关联。快照映射对象包括指向映射对象的链接。快照映射对象是映射对象的一个版本，并共享缓存在全局缓存中的数据对象的部分。

38. 发明授权

US08799601B1 Techniques for managing deduplication based on recently written extents 有权
标题翻译：基于最近写入的范围来管理重复数据消除的技术
公开(公告)号：US08799601B1
公开(公告)日：2014-08-05
申请号：US13536375
申请日：2012-06-28
申请人： Xiangping Chen , Philippe Armangau
发明人： Xiangping Chen , Philippe Armangau
IPC分类号： G06F12/00 , G06F12/16
CPC分类号： G06F3/067 , G06F3/0608 , G06F3/0641
摘要： A technique is directed to managing deduplication of extents in a data storage apparatus having processing circuitry and memory which stores the extents (e.g., blocks). The technique involves constructing, by the processing circuitry, a recently written extent list which identifies recently written extents stored within the memory. The technique further involves referencing the recently written extent list to bypass (or skip over) extents identified by the recently written extent list when obtaining a candidate extent for possible deduplication. The technique further involves processing the candidate extent for possible deduplication. Here, by identifying frequently overwritten extents on the recently written extent list, the data storage apparatus is able to easily avoid cycles of deduplicating and subsequently splitting frequently overwritten extents.
摘要翻译：一种技术涉及在具有存储区段（例如，块）的处理电路和存储器的数据存储设备中管理盘区的重复数据删除。该技术涉及由处理电路构建最近写入的盘区列表，其识别存储在存储器内的最近写入的盘区。该技术还涉及参考最近写入的范围列表来绕过（或跳过）最近写入的盘区列表识别的盘区，以获得可能重复数据删除的候选盘区。该技术还涉及处理可能的重复数据删除的候选扩展。这里，通过在最近写入的盘区列表中识别频繁重写的盘区，数据存储装置能够容易地避免重复数据删除的循环，并随后分割经常重写的盘区。

39. 发明授权

US08204871B1 Extended file mapping cache for fast input-output 有权
标题翻译：扩展文件映射缓存，用于快速输入输出
公开(公告)号：US08204871B1
公开(公告)日：2012-06-19
申请号：US12892812
申请日：2010-09-28
申请人： Sitaram Pawar , Philippe Armangau , Yubing Wang , Christopher Seibel , Soumyadeep Sen
发明人： Sitaram Pawar , Philippe Armangau , Yubing Wang , Christopher Seibel , Soumyadeep Sen
IPC分类号： G06F17/30
CPC分类号： G06F17/30132
摘要： A file server has an extent cache of pointers to leaf-level indirect blocks containing file mapping metadata. The extent cache improves file access read and write performance by returning a mapping for the data blocks to be read or written without having to iterate through intermediate level indirect blocks of the file. In addition, the extent cache contains pointers to the leaf-level indirect blocks in the file system cache. Therefore, in most cases, the time spent looking up pointers in the extent cache is offset by a reduction in the time that would otherwise be spent in locating the leaf-level indirect blocks in the file system cache. In a preferred implementation, the extent cache has a first least recently used (LRU) list and cache entry allocation for production files, and a second LRU list and cache entry allocation for snapshot copies of the production files.
摘要翻译：文件服务器具有指向包含文件映射元数据的叶级别间接块的指针的扩展缓存。扩展缓存通过返回要读取或写入的数据块的映射，而不必遍历文件的中间级间接块来提高文件访问读写性能。此外，扩展缓存包含指向文件系统缓存中叶级间接块的指针。因此，在大多数情况下，在盘区高速缓存中查找指针所花费的时间被减少在文件系统高速缓存中定位叶级别间接块所花费的时间减少。在优选实现中，扩展缓存具有用于生产文件的第一最近最少使用的（LRU）列表和高速缓存条目分配，以及用于生产文件的快照副本的第二LRU列表和高速缓存条目分配。

40. 发明授权

US08095804B1 Storing deleted data in a file system snapshot 有权
标题翻译：将删除的数据存储在文件系统快照中
公开(公告)号：US08095804B1
公开(公告)日：2012-01-10
申请号：US11807133
申请日：2007-05-25
申请人： Philippe Armangau , Michael Kilian , Stephen J. Todd
发明人： Philippe Armangau , Michael Kilian , Stephen J. Todd
IPC分类号： G06F11/30 , G06F13/00 , G06F7/00 , H04L29/06 , H04L9/32 , H04L9/08 , G06F11/14 , G06F17/30 , G06F12/00
CPC分类号： G06F11/1435 , G06F17/30088
摘要： Aspects of the invention relate to creating a snapshot of a file system on an OAS system. A snapshot of a file system is an image of a file system at a particular point in time. A snapshot of a file system may be used to restore the file system to its state at the time of creation of the snapshot in, for example, situations where the file system has become corrupted.
摘要翻译：本发明的方面涉及在OAS系统上创建文件系统的快照。文件系统的快照是特定时间点的文件系统的映像。可以使用文件系统的快照来将文件系统恢复到在例如文件系统已经损坏的情况下创建快照时的状态。

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