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21. 发明授权

US07991971B2 State management for transactional backup consistency 有权
标题翻译：事务备份一致性的状态管理
公开(公告)号：US07991971B2
公开(公告)日：2011-08-02
申请号：US11515557
申请日：2006-09-05
申请人： Dana D. Groff , James E. Johnson , Jonathan M. Cargille , Norbert P. Kusters , Ran Kalach , Surendra Verma
发明人： Dana D. Groff , James E. Johnson , Jonathan M. Cargille , Norbert P. Kusters , Ran Kalach , Surendra Verma
IPC分类号： G06F13/00
CPC分类号： G06F11/1474 , G06F11/1471 , G06F2201/82
摘要： Aspects of the subject matter described herein relate to transactions. In aspects, a consistency requester such as a shadow copy service requests to have a consistent view of a set of resources. In response, transactions that are in a problematic state are allowed to exit the problematic state while new and existing transactions that are not in the problematic state are allowed to perform any work except work that takes them into the problematic state. After no transactions are in the problematic state, a consistent view of the set of resources is available. This view may be used by the consistency requester as desired. Afterwards, the consistency requester may indicate that a consistent view is no longer needed. Transactions are then allowed to enter the problematic state. Transactions may also be allowed to enter the problematic state if a timeout elapses.
摘要翻译：本文描述的主题的方面涉及交易。在一些方面，诸如卷影副本服务的一致性请求者请求具有一组资源的一致视图。作为回应，处于有问题状态的事务被允许退出有问题的状态，而不能处于问题状态的新的和现有的事务被允许执行任何工作，除了使它们进入有问题的状态的工作。在没有交易处于问题状态之后，可以使用一组资源的一致视图。该视图可以由所需的一致性请求者使用。之后，一致性请求者可能表示不再需要一致的视图。然后允许交易进入有问题的状态。如果超时，也可允许交易进入问题状态。

22. 发明申请

US20130219125A1 CACHE EMPLOYING MULTIPLE PAGE REPLACEMENT ALGORITHMS 审中-公开
标题翻译： CACHE使用多页替换算法
公开(公告)号：US20130219125A1
公开(公告)日：2013-08-22
申请号：US13401104
申请日：2012-02-21
申请人： Norbert P. Kusters , Andrea D'Amato , Vinod R. Shankar
发明人： Norbert P. Kusters , Andrea D'Amato , Vinod R. Shankar
IPC分类号： G06F12/12
CPC分类号： G06F12/123 , G06F12/0871 , G06F12/127 , G06F2212/1016 , G06F2212/1048 , G06F2212/152 , G06F2212/282 , G06F2212/284 , G06F2212/311 , G06F2212/463
摘要： The present invention extends to methods, systems, and computer program products for implementing a cache using multiple page replacement algorithms. An exemplary cache can include two logical portions where the first portion implements the least recently used (LRU) algorithm and the second portion implements the least recently used two (LRU2) algorithm to perform page replacement within the respective portion. By implementing multiple algorithms, a more efficient cache can be implemented where the pages most likely to be accessed again are retained in the cache. Multiple page replacement algorithms can be used in any cache including an operating system cache for caching pages accessed via buffered I/O, as well as a cache for caching pages accessed via unbuffered I/O such as accesses to virtual disks made by virtual machines.
摘要翻译：本发明扩展到用于使用多页替换算法实现高速缓存的方法，系统和计算机程序产品。示例性高速缓存可以包括两个逻辑部分，其中第一部分实现最近最少使用（LRU）算法，并且第二部分实现最近最少使用的两个（LRU2）算法来在相应部分内执行页面替换。通过实施多种算法，可以实现更有效的缓存，其中最有可能被重新访问的页面保留在高速缓存中。可以在任何缓存中使用多页替换算法，包括用于缓存通过缓冲I / O访问的页面的操作系统缓存，以及用于缓存通过无缓冲I / O访问的页面的缓存，例如对由虚拟机进行的虚拟磁盘的访问。

23. 发明授权

US06665786B2 Dynamic disk partition management 有权
标题翻译：动态磁盘分区管理
公开(公告)号：US06665786B2
公开(公告)日：2003-12-16
申请号：US09157881
申请日：1998-09-21
申请人： Lonny D McMichael , Norbert P. Kusters , Peter W. Wieland
发明人： Lonny D McMichael , Norbert P. Kusters , Peter W. Wieland
IPC分类号： G06F1200
CPC分类号： G06F3/0601 , G06F2003/0697 , Y10S707/99953 , Y10S707/99954
摘要： A partition manager enables the dynamic creation, reconfiguration, and deletion of logical volumes as non-removable storage devices are connected, reconfigured, or disconnected in a computer system by assigning partitions on a connected device to volume managers which create the logical volumes, and by removing the assignment when the device is disconnected or reconfigured. The partition manager receives notification from the operating system of the arrival of new volume managers in a system. When new partitions are created on a non-removable storage device in the system by a device driver, the partition manager intercepts the partitions before they can be registered with the operating system. The partition manager queries each volume manager, in order of their arrival in the system, as to whether the volume manager handles a particular new partition and assigns control of the partition to the appropriate volume manager. The partition manager associates the partition with the appropriate volume manager in an in-memory partition manager database. The partition manager also removes a partition from the control of the associated volume manager and disassociates the partition from the volume manager when the partition is inaccessible.
摘要翻译：分区管理器可以通过在连接的设备上将分区分配给创建逻辑卷的卷管理器，并通过创建逻辑卷的卷管理器来实现逻辑卷的动态创建，重新配置和删除，因为不可移动存储设备在计算机系统中连接，重新配置或断开连接当设备断开连接或重新配置时，删除分配。分区管理器从操作系统接收新卷管理器到达系统的通知。当由设备驱动程序在系统中的不可移动存储设备上创建新分区时，分区管理器会在分区注册到操作系统之前拦截分区。分区管理器按顺序查询每个卷管理器，以了解卷管理器是否处理特定的新分区，并将分区的控制分配给相应的卷管理器。分区管理器将分区与内存中分区管理器数据库中的相应卷管理器相关联。分区管理器还从关联的卷管理器的控制中删除分区，并在分区无法访问时将分区与卷管理器分离。

24. 发明授权

US08386434B2 Optimizing defragmentation operations in a differential snapshotter 有权
标题翻译：优化差分快照器中的碎片整理操作
公开(公告)号：US08386434B2
公开(公告)日：2013-02-26
申请号：US12646640
申请日：2009-12-23
申请人： Norbert P. Kusters , Benjamin A. Leis , Mark J. Zbikowski
发明人： Norbert P. Kusters , Benjamin A. Leis , Mark J. Zbikowski
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F3/065 , G06F3/061 , G06F3/0617 , G06F3/067 , G06F2201/84 , Y10S707/99943
摘要： A method for establishing and maintaining a differential snapshot of a set of files stored on a volume is disclosed. The invention achieves processing time and disk space optimizations by avoiding copy-on-write operations for logically insignificant moves of blocks, such as the block rearrangements characteristic of defragmentation utilities. A file system enhancement enabling the passing of a block copy command from the file system to lower-level drivers, is used to inform the snapshotter that a block move operation is not logically meaningful. When the logically insignificant move is of a block whose data forms part of the data captured in the snapshot virtual volume, and when the move is to a block location that is functioning as logical free space, the snapshotter can simply modify its block bitmap and update translation table entries without needing to perform a copy-on-write.
摘要翻译：公开了一种用于建立和维护存储在卷上的一组文件的差分快照的方法。本发明通过避免在块的逻辑上不重要的移动（例如，碎片整理实用程序的特征的块重排）来避免写入时的写入操作来实现处理时间和磁盘空间优化。使用能够将块复制命令从文件系统传递到较低级别驱动程序的文件系统增强功能用于通知快照器块移动操作在逻辑上无意义。当逻辑上不显着的移动是一个块，其数据构成快照虚拟卷中捕获的数据的一部分，并且当移动到作为逻辑可用空间的块位置时，快照器可以简单地修改其块位图并更新转换表条目，而不需要执行写时复制。

25. 发明授权

US07383466B2 Method and system of previewing a volume revert operation 有权
标题翻译：预览卷还原操作的方法和系统
公开(公告)号：US07383466B2
公开(公告)日：2008-06-03
申请号：US11032732
申请日：2005-01-10
申请人： Norbert P. Kusters , Behnam Fathi , Dragos C. Sambotin
发明人： Norbert P. Kusters , Behnam Fathi , Dragos C. Sambotin
IPC分类号： G06F11/00
CPC分类号： G06F11/1415 , G06F11/1435 , G06F2201/84 , Y10S707/99953
摘要： Described is a revert preview mechanism, which gives the user a chance to temporarily remount a storage volume with the contents of a shadow copy, and then evaluate the computer system as if reverted, including allowing full I/O read and write operations to the storage volume. A temporary storage location is provided to cache data writes. Read requests are read back from the temporary storage location if the corresponding volume location has been written, or are read back from the shadow copy of the volume if not written since the revert preview operation began. In the case of a revert preview of the boot volume, an API is used to specify a correct shadow copy instance of the system registry hive, which needs to be loaded following reboot, but before the shadow copy driver is loaded. Use of the API loads the correct instance on the next reboot.
摘要翻译：描述了一种恢复预览机制，其给予用户临时用卷影副本的内容重新安装存储卷的机会，然后评估计算机系统如同还原，包括允许对存储器进行完整的I / O读取和写入操作卷。提供临时存储位置来缓存数据写入。如果相应的卷位置已被写入，读请求将从临时存储位置读取，或者从还原预览操作开始以来未写入的卷的卷影副本中读取。在启动卷的恢复预览的情况下，API用于指定系统注册表配置单元的正确卷影副本实例，该实例需要重新启动后才能加载，但在加载卷影副本驱动程序之前。使用API会在下次重新启动时加载正确的实例。

26. 发明授权

US06647473B1 Kernel-based crash-consistency coordinator 有权
标题翻译：基于内核的崩溃一致性协调器
公开(公告)号：US06647473B1
公开(公告)日：2003-11-11
申请号：US09505344
申请日：2000-02-16
申请人： David P. Golds , Norbert P. Kusters , Brian D. Andrew , Daniel E. Lovinger , Supriya Wickrematillake
发明人： David P. Golds , Norbert P. Kusters , Brian D. Andrew , Daniel E. Lovinger , Supriya Wickrematillake
IPC分类号： G06F1300
CPC分类号： G06F9/445 , Y10S707/99953 , Y10S707/99955
摘要： A snapshot system capable of capturing snapshots of multiple volumes wherein the snapshots are coordinated. A snapshot manager determines which volumes are to be involved in a snapshot operation, and issues a message to the file system for each volume involved, each message including information sufficient to identify the volumes involved in the snapshot operation. Each file system passes its respective message down to a coordinator mechanism. The coordinator mechanism coordinates the state of each of the volumes, such as by holding writes thereto, to put each volume into a quiescent state, and then enables the snapshot to be captured. When the snapshots are captured, a snapshot set will include snapshots that are coordinated across the multiple volumes. The coordinator mechanism releases any writes being held for the volumes involved.
摘要翻译：快照系统，能够捕获多个卷的快照，其中快照协调。快照管理器确定在快照操作中涉及哪些卷，并且为每个涉及的卷发送文件系统的消息，每个消息包括足以识别快照操作中涉及的卷的信息。每个文件系统将其各自的消息传递给协调器机制。协调器机制通过保持每个卷的状态来协调每个卷的状态，例如通过持有写入来将每个卷置于静止状态，然后使快照被捕获。捕获快照时，快照集将包括跨多个卷协调的快照。协调器机制释放为所涉及的卷保留的任何写入。

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