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1. 发明申请

US20050138085A1 Transactional file system 有权
公开(公告)号：US20050138085A1
公开(公告)日：2005-06-23
申请号：US11010820
申请日：2004-12-13
申请人： Surendra Verma , Thomas Miller , Robert Atkinson
发明人： Surendra Verma , Thomas Miller , Robert Atkinson
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30227 , Y10S707/959 , Y10S707/99931 , Y10S707/99932 , Y10S707/99937 , Y10S707/99938 , Y10S707/99942 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953
摘要： A transactional file system wherein multiple file system operations may be performed as part of a user-level transaction. An application specifies that the operations on a file, or the file system operations of a thread, should be handled as part of a transaction, and the application is given a file handle associated with a transaction context. For file system requests associated with a transaction context, a component within the file system manages the operations consistent with transactional behavior. The component, which may be a resource manager for distributed transactions, provides data isolation by providing multiple versions of a file by tracking copies of pages that have changed, such that transactional readers do not receive changes to a file made by transactional writers, until the transactional writer commits the transaction and the reader reopens the file. The component also handles namespace logging operations in a multiple-level log that facilitates logging and recovery. Page data is also logged separate from the main log, with a unique signature that enables the log to determine whether a page was fully flushed to disk prior to a system crash. Namespace isolation is provided until a transaction commits via isolation directories, whereby until committed, a transaction sees the effects of its own operations not the operations of other transactions. Transactions over a network are also facilitated via a redirector protocol.

2. 发明申请

US20050149525A1 Transactional file system 有权
标题翻译：事务文件系统
公开(公告)号：US20050149525A1
公开(公告)日：2005-07-07
申请号：US11057935
申请日：2005-02-14
申请人： Surendra Verma , Thomas Miller , Robert Atkinson
发明人： Surendra Verma , Thomas Miller , Robert Atkinson
IPC分类号： G06F12/00 , G06F17/30 , G06F7/00
CPC分类号： G06F17/30227 , Y10S707/959 , Y10S707/99931 , Y10S707/99932 , Y10S707/99937 , Y10S707/99938 , Y10S707/99942 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953
摘要： A transactional file system wherein multiple file system operations may be performed as part of a user-level transaction. An application specifies that the operations on a file, or the file system operations of a thread, should be handled as part of a transaction, and the application is given a file handle associated with a transaction context. For file system requests associated with a transaction context, a component within the file system manages the operations consistent with transactional behavior. The component, which may be a resource manager for distributed transactions, provides data isolation by providing multiple versions of a file by tracking copies of pages that have changed, such that transactional readers do not receive changes to a file made by transactional writers, until the transactional writer commits the transaction and the reader reopens the file. The component also handles namespace logging operations in a multiple-level log that facilitates logging and recovery. Page data is also logged separate from the main log, with a unique signature that enables the log to determine whether a page was fully flushed to disk prior to a system crash. Namespace isolation is provided until a transaction commits via isolation directories, whereby until committed, a transaction sees the effects of its own operations not the operations of other transactions. Transactions over a network are also facilitated via a redirector protocol.
摘要翻译：一种事务文件系统，其中可以执行多个文件系统操作作为用户级别事务的一部分。应用程序指定对文件的操作或线程的文件系统操作应作为事务的一部分进行处理，并向应用程序提供与事务上下文相关联的文件句柄。对于与事务上下文相关联的文件系统请求，文件系统中的组件管理与事务行为一致的操作。该组件可以是分布式事务的资源管理器，通过跟踪已更改的页面的副本，通过提供文件的多个版本来提供数据隔离，以便事务读取器不会接收到由事务编写者所做的文件的更改，直到事务作者提交交易，读者重新打开文件。该组件还处理多级日志中的命名空间日志记录操作，便于记录和恢复。页面数据也与主日志分开记录，使用唯一的签名，可以使日志在系统崩溃之前确定页面是否完全刷新到磁盘。提供命名空间隔离，直到事务通过隔离目录提交，从而直到被提交，事务才会看到其自身操作的影响，而不是其他事务的操作。通过重定向器协议也可以促进网络上的交易。

3. 发明申请

US20050120059A1 Transactional file system 有权
公开(公告)号：US20050120059A1
公开(公告)日：2005-06-02
申请号：US11009228
申请日：2004-12-10
申请人： Surendra Verma , Thomas Miller , Robert Atkinson
发明人： Surendra Verma , Thomas Miller , Robert Atkinson
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30227 , Y10S707/959 , Y10S707/99931 , Y10S707/99932 , Y10S707/99937 , Y10S707/99938 , Y10S707/99942 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953
摘要： A transactional file system wherein multiple file system operations may be performed as part of a user-level transaction. An application specifies that the operations on a file, or the file system operations of a thread, should be handled as part of a transaction, and the application is given a file handle associated with a transaction context. For file system requests associated with a transaction context, a component within the file system manages the operations consistent with transactional behavior. The component, which may be a resource manager for distributed transactions, provides data isolation by providing multiple versions of a file by tracking copies of pages that have changed, such that transactional readers do not receive changes to a file made by transactional writers, until the transactional writer commits the transaction and the reader reopens the file. The component also handles namespace logging operations in a multiple-level log that facilitates logging and recovery. Page data is also logged separate from the main log, with a unique signature that enables the log to determine whether a page was fully flushed to disk prior to a system crash. Namespace isolation is provided until a transaction commits via isolation directories, whereby until committed, a transaction sees the effects of its own operations not the operations of other transactions. Transactions over a network are also facilitated via a redirector protocol.

4. 发明申请

US20050120036A1 Transactional file system 有权
标题翻译：事务文件系统
公开(公告)号：US20050120036A1
公开(公告)日：2005-06-02
申请号：US11009662
申请日：2004-12-10
申请人： Surendra Verma , Thomas Miller , Robert Atkinson
发明人： Surendra Verma , Thomas Miller , Robert Atkinson
IPC分类号： G06F12/00 , G06F17/30 , G06F7/00
CPC分类号： G06F17/30227 , Y10S707/959 , Y10S707/99931 , Y10S707/99932 , Y10S707/99937 , Y10S707/99938 , Y10S707/99942 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953
摘要： A transactional file system wherein multiple file system operations may be performed as a transaction. An application specifies that file system-related operations should be handled in a transaction, and is given a file handle associated with a transaction context. For file system requests associated with a transaction context, a file system component manages operations consistent with transactional behavior. The component provides data isolation by providing multiple file versions, such that transactional readers do not receive changes until after the transaction commits and the reader reopens the file. The component handles namespace logging operations in a multiple-level log that facilitates logging and recovery. Page data is logged separate from the main log, with signatures establishing whether pages were fully flushed to disk. Namespace isolation via isolation directories, allows a transaction to see its operational effects but not effects of other uncommitted transactions. Transactions over a network are facilitated.
摘要翻译：一种事务文件系统，其中可以执行多个文件系统操作作为事务。一个应用程序指定文件系统相关的操作应该在事务中处理，并且被赋予与事务上下文关联的文件句柄。对于与事务上下文相关联的文件系统请求，文件系统组件管理与事务行为一致的操作。该组件通过提供多个文件版本来提供数据隔离，使得事务读取器在事务提交之后不会收到更改，并且读取器重新打开该文件。该组件处理多级日志中的命名空间日志记录操作，便于记录和恢复。页面数据与主日志分开记录，签名确定页面是否完全刷新到磁盘。通过隔离目录命名空间隔离，允许事务查看其操作效果，但不会影响其他未提交的事务。通过网络进行的交易是便利的。

5. 发明授权

US09229809B2 Nonvolatile media journaling of verified data sets 有权
标题翻译：验证数据集的非易失媒体日志记录
公开(公告)号：US09229809B2
公开(公告)日：2016-01-05
申请号：US13229736
申请日：2011-09-11
申请人： Darren Moss , Karan Mehra , Rajeev Nagar , Surendra Verma , Shiv Rajpal
发明人： Darren Moss , Karan Mehra , Rajeev Nagar , Surendra Verma , Shiv Rajpal
IPC分类号： G06F12/16 , G06F11/10 , G06F11/14 , G06F3/06
CPC分类号： G06F11/1076 , G06F3/0613 , G06F3/0646 , G06F11/1471
摘要： The storage of data sets in a storage set (e.g., data sets written to hard disk drives comprising a RAID array) may diminish the performance of the storage set through non-sequential writes, particularly if the storage devices promptly write data sets that are followed by sequentially following data sets. Additionally, storage sets may exhibit inconsistencies due to non-atomic writes of data sets and verifiers (e.g., checksums) and an intervening failure, such as an occurrence of the RAID write hole. Instead, data sets and verifiers may first be written to a stored on the nonvolatile media of a storage device before being committed to the storage set. Such writes may be sequentially written to the journal, irrespective of the locations of the data sets in the storage set; and recovery of a failure may simply involve re-committing the consistent records in the journal to correct incomplete writes to the storage set.
摘要翻译：将数据集存储在存储集中（例如，写入包含RAID阵列的硬盘驱动器的数据集）可能会通过非顺序写入来降低存储集的性能，特别是如果存储设备及时写入遵循的数据集通过顺序跟随数据集。此外，由于数据集和验证器（例如，校验和）的非原子写入以及诸如RAID写入孔的发生的中间故障，存储器组可能表现出不一致。相反，在提交到存储集之前，数据集和验证器可以首先被写入到存储设备的非易失性介质上。这样的写入可以顺序地写入日志，而不管存储集中的数据集的位置如何; 并且恢复故障可能只是简单地涉及在日志中重新提交一致的记录来纠正对存储集的不完整写入。

6. 发明授权

US09218135B2 Hierarchical allocation for file system storage device 有权
标题翻译：文件系统存储设备的分层分配
公开(公告)号：US09218135B2
公开(公告)日：2015-12-22
申请号：US12816419
申请日：2010-06-16
申请人： Thomas J. Miller , Jonathan M. Cargille , William R. Tipton , Surendra Verma
发明人： Thomas J. Miller , Jonathan M. Cargille , William R. Tipton , Surendra Verma
IPC分类号： G06F3/06
CPC分类号： G06F3/0631 , G06F3/0604 , G06F3/0613 , G06F3/0644 , G06F3/0676 , G06F3/0689 , G06F17/30221
摘要： Aspects of the subject matter described herein relate to storage allocation. In aspects, a hierarchical data structure is used to track allocation data for storage managed by a file system. The hierarchical data structure may have multiple levels with each level having data regarding a different granularity of storage. Portions of the hierarchical data structure may be locked independently of other portions of the hierarchical data structure. The hierarchical data structure may indicate that one or more portions of storage are for exclusive use by a directory. Extra space may be reserved in allocated space in anticipation of subsequent operations. Allocation requestors may obtain storage allocation from regions associated with different levels of the hierarchical data structure.
摘要翻译：本文描述的主题的方面涉及存储分配。在一些方面，分层数据结构用于跟踪由文件系统管理的存储的分配数据。分层数据结构可以具有多个级别，其中每个级别具有关于不同粒度的存储的数据。分层数据结构的部分可以独立于分层数据结构的其他部分被锁定。分级数据结构可以指示存储器的一个或多个部分被目录专用。可能在分配的空间中预留额外的空间，以期进行后续操作。分配请求者可以从与分级数据结构的不同级别相关联的区域获得存储分配。

7. 发明授权

US08510336B2 Transactional file system 有权
标题翻译：事务文件系统
公开(公告)号：US08510336B2
公开(公告)日：2013-08-13
申请号：US13181703
申请日：2011-07-13
申请人： Surendra Verma , Thomas J. Miller , Robert G. Atkinson
发明人： Surendra Verma , Thomas J. Miller , Robert G. Atkinson
IPC分类号： G06F17/30
CPC分类号： G06F17/30227 , Y10S707/959 , Y10S707/99931 , Y10S707/99932 , Y10S707/99937 , Y10S707/99938 , Y10S707/99942 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953
摘要： A transactional file system wherein multiple file system operations may be performed as a transaction. An application specifies that file system-related operations are to be handled as a transaction, and the application is given a file handle associated with a transaction context. For file system requests associated with a transaction context, a file system component manages operations consistent with transactional behavior. Logging and recovery are also facilitated by logging page data separate from the main log with a unique signature that enables the log to determine whether a page was fully flushed to disk prior to a system crash.
摘要翻译：一种事务文件系统，其中可以执行多个文件系统操作作为事务。应用程序指定文件系统相关操作将作为一个事务来处理，并且应用程序被赋予与事务上下文相关联的文件句柄。对于与事务上下文相关联的文件系统请求，文件系统组件管理与事务行为一致的操作。通过使用独特的签名将与主日志分开的页面数据记录在一起，从而使日志能够在系统崩溃之前确定页面是否完全刷新到磁盘，从而方便了日志记录和恢复。

8. 发明申请

US20130064052A1 EFFICIENT ACCESS TO STORAGE DEVICES WITH USAGE BITMAPS 有权
公开(公告)号：US20130064052A1
公开(公告)日：2013-03-14
申请号：US13230840
申请日：2011-09-12
申请人： Karan Mehra , Surendra Verma , John R. Dietrick
发明人： Karan Mehra , Surendra Verma , John R. Dietrick
IPC分类号： G11B20/12
CPC分类号： G11B20/1217 , G06F3/0611 , G06F3/0652 , G06F3/0673
摘要： Upon receiving a request to allocate a storage region, a storage device may initialize the contents of the storage device to default values (e.g., zero) in order to avoid problems arising from unknown data stored in the locations of the storage region (e.g., upon writing a data set to a location involved in a mirroring relationship, uninitialized data in the corresponding mirror location may result in a mismatch that jeopardizes the written data). However, initializing the storage device may be time-consuming and inefficient. Instead, a usage bitmap may be generated that, for respective location sets of the storage region, indicates whether values exist in the location. A read request may be fulfilled by examining the usage bitmap to determine whether values exist in the specified location, and if not, the default value may be returned without accessing the storage device. Other efficiencies may also be achieved using the usage bitmap.

9. 发明授权

US08037033B2 Log manager for aggregating data 有权
标题翻译：日志管理器用于聚合数据
公开(公告)号：US08037033B2
公开(公告)日：2011-10-11
申请号：US12235080
申请日：2008-09-22
申请人： Shi Cong , Karan Mehra , Darren G. Moss , William R. Tipton , Surendra Verma
发明人： Shi Cong , Karan Mehra , Darren G. Moss , William R. Tipton , Surendra Verma
IPC分类号： G06F17/30
CPC分类号： G06F3/0656 , G06F3/0611 , G06F3/0673
摘要： A processing device and a machine-implemented method may be provided for sequentially aggregating, or writing, data to a log included in a data store. The log may store multiple log entries. Each of the log entries may include an entry metadata portion, describing a respective log entry, and an entry payload data portion. The entry metadata portion may include a log sequence number, corresponding to a log entry at a particular position in the log. A library of log-related processes may be provided, along with an application program interface to permit a calling application program to call any of the log related processes. The log-related processes may be called during a boot mode, a user mode, and a kernel mode.
摘要翻译：可以提供处理装置和机器实现的方法，用于将数据顺序地聚合或写入数据存储中包括的日志。该日志可以存储多个日志条目。每个日志条目可以包括条目元数据部分，描述相应的日志条目和条目有效载荷数据部分。条目元数据部分可以包括对应于日志中特定位置处的日志条目的日志序列号。可以提供与日志相关的过程的库，以及应用程序接口，以允许调用应用程序调用任何日志相关进程。可以在引导模式，用户模式和内核模式期间调用日志相关进程。

10. 发明申请

US20090044204A1 Application programming interfaces for transacted file and registry operations 有权
标题翻译：用于事务文件和注册表操作的应用程序编程接口
公开(公告)号：US20090044204A1
公开(公告)日：2009-02-12
申请号：US11890921
申请日：2007-08-08
申请人： Dana Groff , Jonathan Cargille , Surendra Verma , Andrew Herron , Dragos Sambotin , Christian Allred , William R. Tipton , Karthik Thirumalai
发明人： Dana Groff , Jonathan Cargille , Surendra Verma , Andrew Herron , Dragos Sambotin , Christian Allred , William R. Tipton , Karthik Thirumalai
IPC分类号： G06F9/44
CPC分类号： G06F9/54 , G06F9/466
摘要： A set of application programming interfaces (“APIs”) is provided that enables an application to perform operations on multiple system resources as a single logical unit of work through a transaction. The application can then commit or roll back the entire group of changes as a single unit in a coordinated manner. The APIs expose functions and methods that take a reference to a transaction context, such as a handle, name, or pointer, as one of their parameters so that the application can manipulate the resource as a transacted operation. The transaction is bound to all created handles so that all operations on the resource using those handles are also transacted. In an illustrative example, the set of APIs are transacted name-based WIN32 APIs that take a transaction handle. The transacted APIs expose transacted operations to the application for durable system resources in the OS kernel, including the NTFS file system (New Technology File System) and registry.
摘要翻译：提供了一组应用程序编程接口（“API”），使得应用程序可以通过事务将多个系统资源作为单个逻辑工作单元执行操作。然后，应用程序可以以协调的方式将整个更改组作为单个单元进行提交或回滚。 API公开了将事务上下文（例如句柄，名称或指针）引用为其参数之一的函数和方法，以便应用程序可以将该资源作为事务处理操作。事务绑定到所有创建的句柄，以便使用这些句柄的资源上的所有操作也被处理。在一个说明性的例子中，这组API是处理基于名称的WIN32 API，它采取事务处理。事务处理的API将处理的操作暴露给OS应用程序中的持久系统资源，包括NTFS文件系统（新技术文件系统）和注册表。

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