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1. 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

2. 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。

3. 发明申请

US20130073519A1 HANDLING DATA EXTENT SIZE ASYMMETRY DURING LOGICAL REPLICATION IN A STORAGE SYSTEM 审中-公开
标题翻译：在存储系统中的逻辑复制期间处理数据量大小不对称
公开(公告)号：US20130073519A1
公开(公告)日：2013-03-21
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
CPC分类号： G06F17/30215 , G06F3/0608 , G06F3/0641 , G06F3/067 , G06F11/2094 , G06F11/2097
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.
摘要翻译：公开了一种名称数据的技术，以允许通过复制关系中的源和目的地之间的链路以及在目的地的存储来保持存储效率。该技术允许源将命名数据发送到目的地一次，并在将来多次引用它，而不必重新发送数据。该技术还允许数据扩展区的传输与引用数据扩展区的逻辑容器进行解耦。此外，该技术允许复制系统适应复制源和目的地之间的不同扩展大小，同时保持存储效率。

4. 发明申请

US20100138394A1 MULTIPLE CONCURRENT ACTIVE FILE SYSTEMS 有权
标题翻译：多个并发活动文件系统
公开(公告)号：US20100138394A1
公开(公告)日：2010-06-03
申请号：US12698223
申请日：2010-02-02
申请人： David Hitz , John Edwards , Blake Lewis
发明人： David Hitz , John Edwards , Blake Lewis
IPC分类号： G06F17/00 , G06F12/16
CPC分类号： G06F17/30067 , G06F2201/84 , Y10S707/99931 , Y10S707/99938 , Y10S707/99952 , Y10S707/99953
摘要： A method and apparatus for operating a data storage system is disclosed. An original active file system holds incoming write transactions. Data is written at a selected time to blocks in a data storage device of the original active file system, the data written to blocks which do not hold old data of the data storage system. Pointers to data of the original active file system are written at the selected time to the data storage device, the pointers written to blocks which do not hold old data of the data storage system, the pointers and a previously saved data of the active file system forming a consistency point of the original active file system at the selected time. A new active file system is started using the consistency point of the original active file system at the selected time.
摘要翻译：公开了一种用于操作数据存储系统的方法和装置。原始活动文件系统保存传入的写入事务。在选定的时间写入数据以在原始活动文件系统的数据存储装置中阻塞数据，该数据被写入不保存数据存储系统的旧数据的块。原始活动文件系统的数据指针在选定的时间被写入数据存储装置，指针写入不保存数据存储系统的旧数据的块，指针和活动文件系统之前保存的数据在选定的时间形成原始活动文件系统的一致性点。在所选择的时间，使用原始活动文件系统的一致性点启动新的活动文件系统。

5. 发明授权

US07454445B2 Write allocation based on storage system map and snapshot 有权
标题翻译：基于存储系统映射和快照写入分配
公开(公告)号：US07454445B2
公开(公告)日：2008-11-18
申请号：US09932578
申请日：2001-08-17
申请人： Blake Lewis , John Edwards , Srinivasan Viswanathan
发明人： Blake Lewis , John Edwards , Srinivasan Viswanathan
IPC分类号： G06F12/00 , G06F7/00 , G06F15/16
CPC分类号： G06F11/14 , G06F11/1435 , G06F2201/84 , Y10S707/99931 , Y10S707/99956
摘要： The invention provides an improved method and apparatus for creating a snapshot of a file system. A “copy-on-write” mechanism is used. The snapshot uses the same blocks as the active file system until the active file system is modified. Whenever a modification occurs, the modified data is copied to a new block and the old data is saved. In this way, the snapshot only uses space where it differs from the active file system, and the amount of work required to create the snapshot is small. A record of which blocks are being used by the snapshot is included in the snapshot itself, allowing effectively instantaneous snapshot creation and deletion. A snapshot can also be deleted instantaneously simply by discarding its root inode.
摘要翻译：本发明提供了一种用于创建文件系统的快照的改进的方法和装置。使用“写时复制”机制。快照使用与活动文件系统相同的块，直到活动文件系统被修改为止。每当发生修改时，修改的数据将被复制到新的块，并保存旧的数据。以这种方式，快照只使用与活动文件系统不同的空间，创建快照所需的工作量很小。快照中使用哪些块的记录包含在快照本身中，可以有效地即时创建和删除快照。也可以通过丢弃其根节点来即时删除快照。

6. 发明授权

US06640233B1 Reserving file system blocks 失效
标题翻译：保留文件系统块
公开(公告)号：US06640233B1
公开(公告)日：2003-10-28
申请号：US09642063
申请日：2000-08-18
申请人： Blake Lewis , Kayuri Patel , Ray Chen
发明人： Blake Lewis , Kayuri Patel , Ray Chen
IPC分类号： G06F1200
CPC分类号： G06F3/0601 , G06F2003/0697 , Y10S707/99931 , Y10S707/99956
摘要： A system that manages a file system for a file server. A file operation is received that signals a reservation operation for a file having a file size. Preferably, the file system uses a write anywhere file system layout, the file operation that signals the reservation operation is a zero length write request, and the file operation that signals the reservation operation includes a parameter that specifies the file size. A number of blocks needed to be reserved to accommodate the file is computed. Preferably, computing the number of blocks needed to be reserved to accommodate the file includes determining a total number of direct and indirect blocks needed to accommodate the file size, and subtracting a total number of blocks already allocated for the file and a total number of cached unallocated blocks for the file from the total number of direct and indirect blocks needed to accommodate the file size. A number of unallocated blocks is reserved in the file system, with the number of reserved blocks equal to the number of blocks needed to be reserved to accommodate the file. Reserving the number of blocks preferably includes setting a flag in an inode for the file that indicates blocks have been reserved for the file, and incrementing a reserved block count in a file system information block by the number of blocks needed.
摘要翻译：管理文件服务器的文件系统的系统。接收到对具有文件大小的文件进行预约操作的文件操作。优选地，文件系统使用写入任何文件系统布局，用于指示预约操作的文件操作是零长度写请求，并且指示预留操作的文件操作包括指定文件大小的参数。计算需要保留的多个块以容纳该文件。优选地，计算需要被保留以容纳文件的块的数量包括确定容纳文件大小所需的直接和间接块的总数，以及减去已经为文件分配的块的总数和缓存的总数从文件大小所需的直接和间接块的总数中，文件的未分配块。在文件系统中保留了许多未分配的块，其中保留块的数量等于需要保留以容纳该文件的块的数量。保留块的数量优选地包括在文件的inode中设置一个标志，该标志指示块已被保留用于该文件，并且将文件系统信息块中的保留块计数递增所需的块数。

7. 发明授权

US08745338B1 Overwriting part of compressed data without decompressing on-disk compressed data 有权
标题翻译：在不压缩磁盘压缩数据的情况下覆盖部分压缩数据
公开(公告)号：US08745338B1
公开(公告)日：2014-06-03
申请号：US13099283
申请日：2011-05-02
申请人： Sandeep Yadav , Rickard E. Faith , Subramaniam Periyagaram , Blake Lewis , Ashish Prakash
发明人： Sandeep Yadav , Rickard E. Faith , Subramaniam Periyagaram , Blake Lewis , Ashish Prakash
IPC分类号： G06F3/044 , G06F17/30
CPC分类号： G06F3/064 , G06F3/061 , G06F3/0619 , G06F3/067 , G06F3/0689 , G06F17/30153 , G06F2211/1014 , G06F2212/401
摘要： Overwriting part of compressed data without decompressing on-disk compressed data is implemented by receiving a write request for a block of data in a compression group from a client, wherein the compression group comprises a group of data blocks that is compressed, wherein the block of data is uncompressed. The storage server partially overwrites the compression group, wherein the compression group remains compressed while the partial overwriting is performed. The storage server determines whether the partially overwritten compression group including the uncompressed block of data should be compressed. The storage server defers compression of the partially overwritten compression group if the partially overwritten compression group should not be compressed. The storage server compresses the partially overwritten compression group if the partially overwritten compression group should be compressed.
摘要翻译：通过接收来自客户机的压缩组中的数据块的写请求来实现不对压缩数据进行解压缩的部分压缩数据，其中压缩组包括被压缩的一组数据块，其中，数据未压缩。存储服务器部分地覆盖压缩组，其中在执行部分重写的同时，压缩组保持压缩。存储服务器确定是否应压缩包括未压缩数据块的部分覆盖压缩组。如果部分覆盖的压缩组不应被压缩，则存储服务器会延迟部分覆盖压缩组的压缩。如果部分覆盖的压缩组应该被压缩，存储服务器会压缩部分覆盖的压缩组。

8. 发明申请

US20120330903A1 DEDUPLICATION IN AN EXTENT-BASED ARCHITECTURE 有权
标题翻译：在基于结构的架构中的分类
公开(公告)号：US20120330903A1
公开(公告)日：2012-12-27
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： G06F7/00
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。

9. 发明授权

US07418465B1 File system block reservation manager 有权
标题翻译：文件系统块预约管理器
公开(公告)号：US07418465B1
公开(公告)日：2008-08-26
申请号：US10693326
申请日：2003-10-24
申请人： Blake Lewis , Kayuri Patel , Ray Chen
发明人： Blake Lewis , Kayuri Patel , Ray Chen
IPC分类号： G06F17/30 , G06F12/00 , G06F15/16
CPC分类号： G06F3/0601 , G06F2003/0697 , Y10S707/99931 , Y10S707/99956
摘要： A system that manages a file system for a file server. A file operation is received that signals a reservation operation for a file having a file size. Preferably, the file system uses a write anywhere file system layout, the file operation that signals the reservation operation is a zero length write request, and the file operation that signals the reservation operation includes a parameter that specifies the file size. A number of blocks needed to be reserved to accommodate the file is computed. Preferably, computing the number of blocks needed to be reserved to accommodate the file includes determining a total number of direct and indirect blocks needed to accommodate the file size, and subtracting a total number of blocks already allocated for the file and a total number of cached unallocated blocks for the file from the total number of direct and indirect blocks needed to accommodate the file size. A number of unallocated blocks is reserved in the file system, with the number of reserved blocks equal to the number of blocks needed to be reserved to accommodate the file. Reserving the number of blocks preferably includes setting a flag in an inode for the file that indicates blocks have been reserved for the file, and incrementing a reserved block count in a file system information block by the number of blocks needed.
摘要翻译：管理文件服务器的文件系统的系统。接收到对具有文件大小的文件进行预约操作的文件操作。优选地，文件系统使用写入任何文件系统布局，用于指示预约操作的文件操作是零长度写请求，并且指示预留操作的文件操作包括指定文件大小的参数。计算需要保留的多个块以容纳该文件。优选地，计算需要被保留以容纳文件的块的数量包括确定容纳文件大小所需的直接和间接块的总数，以及减去已经为文件分配的块的总数和缓存的总数从文件大小所需的直接和间接块的总数中，文件的未分配块。在文件系统中保留了许多未分配的块，其中保留块的数量等于需要保留以容纳该文件的块的数量。保留块的数量优选地包括在文件的inode中设置一个标志，该标志指示块已被保留用于该文件，并且将文件系统信息块中的保留块计数递增所需的块数。

10. 发明授权

US06857001B2 Multiple concurrent active file systems 失效
公开(公告)号：US06857001B2
公开(公告)日：2005-02-15
申请号：US10165188
申请日：2002-06-07
申请人： David Hitz , John Edwards , Blake Lewis
发明人： David Hitz , John Edwards , Blake Lewis
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30067 , G06F2201/84 , Y10S707/99931 , Y10S707/99938 , Y10S707/99952 , Y10S707/99953
摘要： Maintenance of plural active file systems, wherein each of the active file systems initially access data shared with another of the active file systems, and wherein changes made to each of the active file systems are not reflected in other active file systems. When a second active file system is created based on a first active file system, the first active file system and the second active file system initially share data. When changes are made to the first active file system, modified data is recorded in the first active file system in a location that is not shared with the second active file system. When changes are made to the second active file system, modified data is recorded in the second active file system in a location that is not shared with the first active file system. Also, creation of the plural active file systems.

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