公开(公告)号：US08135763B1

公开(公告)日：2012-03-13

申请号：US11241054

申请日：2005-09-30

Applicant: James T. Compton ,  Surrendranath R. Doohkan ,  Stephen A. Fridella ,  Uday K. Gupta ,  Nikolay Popov ,  Stephen A. Rago

Inventor： James T. Compton ,  Surrendranath R. Doohkan ,  Stephen A. Fridella ,  Uday K. Gupta ,  Nikolay Popov ,  Stephen A. Rago

IPC: G06F17/30

CPC classification number: G06F17/30082 ,  G06F17/30091

Abstract: An improved policy enforcement architecture includes several components that improve the performance of policy enforcement in a hierarchical storage environment. A File System Query instruction permits a richer set of queries to be expressed by a policy engine, thereby permitting more complex policies to be implemented with ease. The File System result is generated at the file server, and only files of interest are forwarded to the policy engine. The file system query advantageously may be applied against a pre-generated index having one more characterizing attributes to further reduce the processing required to retrieve policy data. An Index Build instruction, added to a programming interface, allows a policy engine generate the characterizing indices in advance of use. Index maintenance techniques maintain consistency between the index and the file system to ensure that the policy can be enforced using accurate file information.

Abstract translation: 改进的策略实施体系结构包括几个可以在分层存储环境中提高策略执行性能的组件。 文件系统查询指令允许由策略引擎表达更丰富的查询集，从而允许更容易实现更复杂的策略。 文件系统结果是在文件服务器生成的，只有感兴趣的文件才转发给策略引擎。 文件系统查询有利地可以应用于具有一个更多特征属性的预先生成的索引，以进一步减少检索策略数据所需的处理。 添加到编程界面中的索引构建指令允许策略引擎在使用之前生成表征索引。 索引维护技术保持索引和文件系统之间的一致性，以确保可以使用准确的文件信息执行策略。

公开(公告)号：US07873619B1

公开(公告)日：2011-01-18

申请号：US12058981

申请日：2008-03-31

Applicant: Sorin Faibish ,  Peter Bixby ,  Uday K. Gupta ,  Walter A. O'Brien, III ,  Stephen A. Fridella

Inventor： Sorin Faibish ,  Peter Bixby ,  Uday K. Gupta ,  Walter A. O'Brien, III ,  Stephen A. Fridella

IPC: G06F17/30

CPC classification number: G06F17/30091 ,  G06F3/0685 ,  G06F3/0689

Abstract: A method is used in managing metadata. Data of an object is stored in a magnetic hard disk set in an object addressable data storage system. Metadata for the object is stored in an SSD set in the object addressable data storage system. The metadata includes information necessary for determining the location of the data of the object in the magnetic hard disk set.

Abstract translation: 一种方法用于管理元数据。 对象的数据被存储在设置在对象可寻址数据存储系统中的磁性硬盘中。 对象的元数据存储在目标可寻址数据存储系统中的SSD集中。 元数据包括确定磁性硬盘组中对象的数据位置所需的信息。

公开(公告)号：US07617216B2

公开(公告)日：2009-11-10

申请号：US11220780

申请日：2005-09-07

Applicant: Stephen A. Fridella ,  Xiaoye Jiang ,  Sorin Faibish ,  John Forecast

Inventor： Stephen A. Fridella ,  Xiaoye Jiang ,  Sorin Faibish ,  John Forecast

IPC: G06F17/30

CPC classification number: G06F17/30194 ,  G06F17/30082

Abstract: A file server system has a cluster of server computers that share access to a file system in shared storage. One of the server computers has primary responsibility for management of access to the file system. In order to reduce the possibility of primary server overload when a large number of the clients happen to concurrently access the same file system, most metadata processing operations are offloaded to secondary server computers. This also facilitates recovery from failure of a primary server computer since only a fraction of the ongoing metadata operations of a primary server computer is interrupted by a failure of the primary server computer. For example, a secondary data mover may truncate, delete, create, or rename a file in response to a client request.

Abstract translation: 文件服务器系统具有共享对共享存储器中的文件系统的访问的服务器计算机集群。 其中一台服务器计算机主要负责管理对文件系统的访问。 为了减少当大量客户端并发访问同一文件系统时主服务器过载的可能性，大多数元数据处理操作都被卸载到辅助服务器计算机。 这还有助于从主服务器计算机的故障恢复，因为主服务器计算机的正在进行的元数据操作的一小部分被主服务器计算机的故障中断。 例如，辅助数据移动器可以截断，删除，创建或重命名文件以响应客户端请求。

公开(公告)号：US07315926B2

公开(公告)日：2008-01-01

申请号：US10945654

申请日：2004-09-21

Applicant: Stephen A. Fridella ,  Xiaoye Jiang ,  Uday K. Gupta ,  Sorin Faibish

Inventor： Stephen A. Fridella ,  Xiaoye Jiang ,  Uday K. Gupta ,  Sorin Faibish

IPC: G06F13/00 ,  G06F12/00

CPC classification number: G06F3/0659 ,  G06F3/061 ,  G06F3/0614 ,  G06F3/0622 ,  G06F3/0637 ,  G06F3/0683 ,  G06F9/526 ,  G06F2209/523

Abstract: A protocol is provided for allocating file locking tasks between primary and secondary data mover computers in a network file server. When there is frequent read access and infrequent write access to a file, a primary data mover grants read locks to the entire file to secondary data movers, and the secondary data movers grant read locks to clients requesting read access. When write access to the file is needed, the read locks to the entire file are released and the read locks granted to the clients are released or expire or are demoted to non-conflicting byte range locks managed by the primary data mover. Concurrent read and write access to the same file is then managed by the primary data mover.

Abstract translation: 提供了一种协议，用于在网络文件服务器中的主要和次要数据移动计算机之间分配文件锁定任务。 当对文件进行频繁的读取访问和不频繁的写入访问时，主数据移动器将授予对整个文件的读取锁定到辅助数据移动器，次要数据移动器将向读取访问权限的客户端授予读取锁定。 当需要对文件进行写入访问时，释放对整个文件的读取锁定，授予客户端的读取锁定将被释放或过期或降级到由主数据移动器管理的非冲突字节范围锁定。 然后由主数据移动器管理对同一文件的并发读写访问。