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1. 发明申请

US20050044353A1 Method and apparatus for dynamically unloading file system filters 有权
标题翻译：动态卸载文件系统过滤器的方法和装置
公开(公告)号：US20050044353A1
公开(公告)日：2005-02-24
申请号：US10461078
申请日：2003-06-13
申请人： Ravisankar Pudipeddi , Neal Christiansen , Eileen Brown
发明人： Ravisankar Pudipeddi , Neal Christiansen , Eileen Brown
IPC分类号： G06F17/30 , H04L9/00
CPC分类号： G06F17/30067 , G06F9/44594
摘要： The invention provides a system and method for dynamically unloading file system filters in a stacked-call-back model where filters are stacked one on top of the other to form a filter stack. A filter manager keeps track of the progress of each I/O operation and calls each filter in turn with the filter returning after it has completed processing the given operation. The filter manager dynamically unloads a filter (or an instance of a filter) that is positioned at any position in the filter stack in a reasonable amount of time while I/O operations are actively being processed. The filter/filter instance can be unloaded with outstanding I/O operations on the filter either hosted by the filter or pended by other filters. I/O operations are canceled, completed or drained in order to unload the filter or filter instance. A filter may veto the unloading of the filter.
摘要翻译：本发明提供一种用于动态卸载堆叠回调模型中的文件系统过滤器的系统和方法，其中过滤器一个在另一个堆叠上以形成过滤器堆栈。过滤器管理器跟踪每个I / O操作的进度，并在过滤器完成处理给定操作之后依次调用每个过滤器。过滤器管理器在主动处理I / O操作时，在合理的时间量内动态地卸载位于过滤器堆栈中任何位置的过滤器（或过滤器的实例）。过滤器/过滤器实例可以在过滤器上托管或由其他过滤器挂起的过滤器上卸载未完成的I / O操作。为了卸载过滤器或过滤器实例，I / O操作被取消，完成或排出。过滤器可以否决过滤器的卸载。

2. 发明申请

US20060136460A1 Managed file system filter model and architecture 有权
公开(公告)号：US20060136460A1
公开(公告)日：2006-06-22
申请号：US11344258
申请日：2006-01-30
申请人： Ravisankar Pudipeddi , Eileen Brown , Neal Christiansen , Ravinder Thind , Brian Dewey , David Golds , Mark Zbikowski
发明人： Ravisankar Pudipeddi , Eileen Brown , Neal Christiansen , Ravinder Thind , Brian Dewey , David Golds , Mark Zbikowski
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F9/4411 , Y10S707/99931 , Y10S707/99933 , Y10S707/99934
摘要： A model in which filter drivers are managed to receive callbacks for I/O requests in which the filter drivers have registered an interest. Per-volume instances of filter drivers register with a filter manager for pre-callbacks (for I/O to the file system) and post-callbacks (for I/O from the file system), and identify which I/O requests (e.g., create, read, write) they are registering to receive callbacks. The filter manager orders the instances for callbacks. When an I/O request is received, the filter manager converts the I/O request to callback data and calls the interested filters in the callback order, whereby the filter instances can process the I/O data. As the request returns from the file system, filters desiring post callbacks are called in the reverse order. Efficient context management for the filters and other functions, such as non-reentrant file I/O, are also provided by the model.

3. 发明申请

US20070118559A1 File system filters and transactions 审中-公开
标题翻译：文件系统过滤器和事务
公开(公告)号：US20070118559A1
公开(公告)日：2007-05-24
申请号：US11282879
申请日：2005-11-18
申请人： Neal Christiansen , Ravinder Thind , Ravisankar Pudipeddi , Dana Groff , Jonathan Cargille
发明人： Neal Christiansen , Ravinder Thind , Ravisankar Pudipeddi , Dana Groff , Jonathan Cargille
IPC分类号： G06F17/00
CPC分类号： G06F16/1865
摘要： Aspects of the subject matter described herein relate to file system filters and transactions. In aspects, a filter may enlist to receive notification of events associated with a transaction. Afterwards, the filter may receive notification of a transaction event for which it has enlisted. In response to receiving notification of the transaction the filter may perform an action as appropriate. Aspects of the subject matter described herein may be applied to stacked and managed filters.
摘要翻译：本文描述的主题的方面涉及文件系统过滤器和事务。在方面中，过滤器可以招募以接收与事务相关联的事件的通知。之后，过滤器可以接收它已经登记的交易事件的通知。响应于接收到交易的通知，过滤器可以适当地执行动作。本文描述的主题的方面可以应用于堆叠和管理的滤波器。

4. 发明申请

US20060253655A1 Scalable rundown protection for object lifetime management 有权
公开(公告)号：US20060253655A1
公开(公告)日：2006-11-09
申请号：US11480799
申请日：2006-07-03
申请人： Ravisankar Pudipeddi , Neill Clift , Neal Christiansen
发明人： Ravisankar Pudipeddi , Neill Clift , Neal Christiansen
IPC分类号： G06F12/00 , G06F13/00
CPC分类号： G06F12/0261
摘要： Object rundown protection that scales with the number of processors in a shared-memory computer system is disclosed. Prior to object rundown, a cache-aware reference count data structure is used to prevent cache-pinging that would otherwise result from data sharing across processors in a multiprocessor computer system. In this data structure, a counter of positive references and negative dereferences, aligned on a particular cache line, is maintained for each processor. When an object is to be destroyed, a rundown wait process is begun, during which new references on the object are prohibited, and the total number of outstanding references is added to an on-stack global counter. Destruction is delayed until the global reference count is reduced to zero. In an implementation on non-uniform memory access multiprocessor machines, each processor's reference count is additionally allocated in a region of main memory that is physically close to that processor.

5. 发明授权

US06993603B2 Managed file system filter model and architecture 有权
标题翻译：管理文件系统过滤器模型和架构
公开(公告)号：US06993603B2
公开(公告)日：2006-01-31
申请号：US10315384
申请日：2002-12-09
申请人： Ravisankar Pudipeddi , Eileen C. Brown , Neal Christiansen , Ravinder Thind , Brian K. Dewey , David P. Golds , Mark J. Zbikowski
发明人： Ravisankar Pudipeddi , Eileen C. Brown , Neal Christiansen , Ravinder Thind , Brian K. Dewey , David P. Golds , Mark J. Zbikowski
IPC分类号： G06F3/00
CPC分类号： G06F9/4411 , Y10S707/99931 , Y10S707/99933 , Y10S707/99934
摘要： A model in which filter drivers are managed to receive callbacks for I/O requests in which the filter drivers have registered an interest. Per-volume instances of filter drivers register with a filter manager for pre-callbacks (for I/O to the file system) and post-callbacks (for I/O from the file system), and identify which I/O requests (e.g., create, read, write) they are registering to receive callbacks. The filter manager orders the instances for callbacks. When an I/O request is received, the filter manager converts the I/O request to callback data and calls the interested filters in the callback order, whereby the filter instances can process the I/O data. As the request returns from the file system, filters desiring post callbacks are called in the reverse order. Efficient context management for the filters and other functions, such as non-reentrant file I/O, are also provided by the model.
摘要翻译：管理过滤器驱动程序以接收过滤器驱动程序注册感兴趣的I / O请求的回调的模型。过滤器驱动程序的每卷实例向过滤器管理器注册预回调（对于文件系统的I / O）和后回调（对于文件系统中的I / O），并识别哪些I / O请求（例如，创建，读取，写入）他们正在注册以接收回调。过滤器管理器命令实例进行回调。当接收到I / O请求时，过滤器管理器将I / O请求转换为回调数据，并在回调顺序中调用感兴趣的过滤器，从而过滤器实例可以处理I / O数据。当请求从文件系统返回时，按照相反的顺序调用期望发回回调的过滤器。该模型还提供了过滤器和其他功能的高效上下文管理，如非可重入文件I / O。

6. 发明授权

US07779425B2 Managed file system filter model and architecture 有权
标题翻译：管理文件系统过滤器模型和架构
公开(公告)号：US07779425B2
公开(公告)日：2010-08-17
申请号：US11344258
申请日：2006-01-30
申请人： Ravisankar Pudipeddi , Eileen C. Brown , Neal Christiansen , Ravinder Thind , Brian K. Dewey , David P. Golds , Mark J. Zbikowski
发明人： Ravisankar Pudipeddi , Eileen C. Brown , Neal Christiansen , Ravinder Thind , Brian K. Dewey , David P. Golds , Mark J. Zbikowski
IPC分类号： G06F3/00 , G06F9/44
CPC分类号： G06F9/4411 , Y10S707/99931 , Y10S707/99933 , Y10S707/99934
摘要： A model in which filter drivers are managed to receive callbacks for I/O requests in which the filter drivers have registered an interest. Per-volume instances of filter drivers register with a filter manager for pre-callbacks (for I/O to the file system) and post-callbacks (for I/O from the file system), and identify which I/O requests (e.g., create, read, write) they are registering to receive callbacks. The filter manager orders the instances for callbacks. When an I/O request is received, the filter manager converts the I/O request to callback data and calls the interested filters in the callback order, whereby the filter instances can process the I/O data. As the request returns from the file system, filters desiring post callbacks are called in the reverse order. Efficient context management for the filters and other functions, such as non-reentrant file I/O, are also provided by the model.
摘要翻译：管理过滤器驱动程序以接收过滤器驱动程序注册感兴趣的I / O请求的回调的模型。过滤器驱动程序的每卷实例向过滤器管理器注册预回调（对于文件系统的I / O）和后回调（对于文件系统中的I / O），并识别哪些I / O请求（例如，创建，读取，写入）他们正在注册以接收回调。过滤器管理器命令实例进行回调。当接收到I / O请求时，过滤器管理器将I / O请求转换为回调数据，并在回调顺序中调用感兴趣的过滤器，从而过滤器实例可以处理I / O数据。当请求从文件系统返回时，按照相反的顺序调用期望发回回调的过滤器。该模型还提供了过滤器和其他功能的高效上下文管理，如非可重入文件I / O。

7. 发明申请

US20070061279A1 Dirty shutdown recovery of file system filters 有权
标题翻译：关闭文件系统过滤器的关闭恢复
公开(公告)号：US20070061279A1
公开(公告)日：2007-03-15
申请号：US11217986
申请日：2005-09-01
申请人： Neal Christiansen , Ravinder Thind , Ravisankar Pudipeddi , Sarosh Havewala
发明人： Neal Christiansen , Ravinder Thind , Ravisankar Pudipeddi , Sarosh Havewala
IPC分类号： G06F17/30
CPC分类号： G06F11/008 , Y10S707/99939 , Y10S707/99953
摘要： File system metadata regarding states of a file system affected by transactions is tracked consistently even in the face of dirty shutdowns which might cause rollbacks in transactions which have already been reflected in the metadata. In order to only request time- and resource-heavy rebuilding of metadata for metadata which may have been affected by rollbacks, reliability information is tracked regarding metadata items. When a metadata item is affected by a transaction which may not complete properly in the case of a problematic shutdown or other event, that metadata item's reliability information indicates that it may not be reliable in case of such a problematic (“dirty” or“abnormal”) event. In addition to flag information indicating unreliability, timestamp information tracking a time of the command which has made a metadata item unreliable is also maintained. This timestamp information can then be used, along with information regarding a period after which the transaction will no longer cause a problem in the case of a problematic event, in order to reset the reliability information to indicate that the metadata item is now reliable even in the face of a problematic event.
摘要翻译：即使遇到已经在元数据中反映的事务中可能导致回滚的脏关机，文档系统元数据也会一直被跟踪。为了仅对请求可能受到回滚影响的元数据的元数据进行时间和资源重型重建，可以跟踪关于元数据项的可靠性信息。当元数据项目受到可能无法在有问题的关闭或其他事件的情况下可能无法正常完成的事务的影响时，该元数据项的可靠性信息表明在出现这种问题（“肮脏”或“异常”）情况下可能不可靠 “）事件。除了指示不可靠性的标志信息之外，还保持跟踪使得使元数据项不可靠的命令的时间的时间戳信息。然后可以使用该时间戳信息以及关于事务不再在有问题的事件的情况下不再导致问题的时间段的信息，以便重置可靠性信息以指示元数据项目现在是可靠的，即使在面对一个有问题的事件。

8. 发明申请

US20060200635A1 Scalable rundown protection for object lifetime management 审中-公开
标题翻译：可扩展的防范对象生命周期管理
公开(公告)号：US20060200635A1
公开(公告)日：2006-09-07
申请号：US11402493
申请日：2006-04-11
申请人： Ravisankar Pudipeddi , Neill Clift , Neal Christiansen
发明人： Ravisankar Pudipeddi , Neill Clift , Neal Christiansen
IPC分类号： G06F12/00
CPC分类号： G06F12/0261
摘要： A system and method for object rundown protection that scales with the number of processors in a shared-memory computer system is disclosed. In an embodiment of the present invention, prior to object rundown, a cache-aware reference count data structure is used to prevent cache-pinging that would otherwise result from data sharing across processors in a multiprocessor computer system. In this data structure, a counter of positive references and negative dereferences, aligned on a particular cache line, is maintained for each processor. When an object is to be destroyed, a rundown wait process is begun, during which new references on the object are prohibited, and the total number of outstanding references is added to an on-stack global counter. Destruction is delayed until the global reference count is reduced to zero. In an embodiment of the invention suited to implementation on non-uniform memory access multiprocessor machines, each processor's reference count is additionally allocated in a region of main memory that is physically close to that processor.
摘要翻译：公开了一种与共享存储器计算机系统中的处理器数量相比较的对象破坏保护的系统和方法。在本发明的一个实施例中，在对象清除之前，使用高速缓存感知引用计数数据结构来防止否则将在多处理器计算机系统中的处理器之间的数据共享导致的高速缓存ping。在这种数据结构中，为每个处理器维护在特定高速缓存线上对齐的正引用和负解除引用的计数器。当一个对象被破坏时，开始一个等待时间的过程，在该过程中，禁止对对象的新引用，并将未完成引用的总数添加到堆栈中的全局计数器。破坏延迟，直到全局引用计数减少为零。在适于在非均匀存储器访问多处理器机器上实现的本发明的实施例中，每个处理器的引用计数额外分配在物理上靠近该处理器的主存储器的区域中。

9. 发明申请

US20070239720A1 VIRTUAL UNIVERSAL NAMING CONVENTION NAME SPACE OVER LOCAL FILE SYSTEM 有权
标题翻译：虚拟通用名称公约名称空间在本地文件系统
公开(公告)号：US20070239720A1
公开(公告)日：2007-10-11
申请号：US11279022
申请日：2006-04-07
申请人： Rohan Kumar , Neal Christiansen , Eileen Brown , Garret Buban
发明人： Rohan Kumar , Neal Christiansen , Eileen Brown , Garret Buban
IPC分类号： G06F17/30
CPC分类号： G06F17/30067
摘要： Systems and methods that create a virtual name space of Universal Naming Convention (UNC) over a local file system (e.g., drive letter based names), via employing a UNC provider and filter arrangement that changes a name in the file object to reparse it to a volume where the local file exists. A name in the file object is changed to a local name (e.g., morphed name); subsequently reparsed and forwarded to a Name Space Owner component (NSO). As such, a request can originate from a UNC stack and reparsed on the local stack. The name space is presented to an application in UNC format, while the underlying file write occur in the file system.
摘要翻译：通过本地文件系统（例如，基于驱动器号的名称）创建通用命名约定（UNC）的虚拟名称空间的系统和方法，通过使用UNC提供程序和过滤器布置来更改文件对象中的名称以将其重新分解为本地文件存在的卷。文件对象中的名称更改为本地名称（例如，变形名称）; 随后重新编译并转发给名称空间所有者组件（NSO）。因此，请求可以源自UNC堆栈，并在本地堆栈上重新生成。名称空间以UNC格式呈现给应用程序，而文件系统中发生底层文件写入。

10. 发明授权

US09778860B2 Re-TRIM of free space within VHDX 有权
公开(公告)号：US09778860B2
公开(公告)日：2017-10-03
申请号：US13612517
申请日：2012-09-12
申请人： Dustin Green , John Starks , Neal Christiansen , Chung Lang Dai
发明人： Dustin Green , John Starks , Neal Christiansen , Chung Lang Dai
IPC分类号： G06F17/30 , G06F3/06
CPC分类号： G06F3/0614 , G06F3/061 , G06F3/064 , G06F3/065 , G06F3/0679
摘要： An invention is disclosed for maintaining out-of-band metadata for data. In embodiments of the invention, an upper layer of a storage stack determines that the metadata of a lower layer of that storage stack may have become out of sync. In response, the upper layer may issue a series of commands to the lower layer based on the metadata. In other embodiments of the invention, an offload-copy operation on data may also transfer out-of-band metadata so that it is applied to the data at the destination.

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