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71. 发明授权

US07428751B2 Secure recovery in a serverless distributed file system 有权
标题翻译：在无服务器分布式文件系统中安全恢复
公开(公告)号：US07428751B2
公开(公告)日：2008-09-23
申请号：US10310440
申请日：2002-12-05
申请人： Miguel Oom Temudo de Castro , Atul Adya , John R. Douceur , William J. Bolosky
发明人： Miguel Oom Temudo de Castro , Atul Adya , John R. Douceur , William J. Bolosky
IPC分类号： H04L29/00 , G06F21/00
CPC分类号： H04L63/0435 , G06F17/30194 , G06F21/40 , G06F21/62 , G06F2221/2101 , H04L9/3236 , H04L9/3247 , H04L9/3255 , H04L63/0442 , H04L63/0823
摘要： Systems and methods for secure file writes after a catastrophic event are allowed over an unauthenticated channel in a serverless distributed file system if an authenticator accompanies the secure file writes. The authenticator can be a power-of-attorney certificate with time limitations, a vector of message authenticated code, or a single message authenticator with secured with a secret shared among members of the serverless distributed file system. The serverless distributed file system includes at least 3f+1 participating computer members, with f representing a number of faults tolerable by the system. The group requires at least one authenticator for file creation and file uploads. Any changes to files stored among the members can be made over an unauthenticated channel if the file changes are secured by the authenticator and the group is able to verify the authenticator.
摘要翻译：如果认证者伴随着安全文件写入，则在无故障分布式文件系统中，通过未经身份验证的通道允许灾难性事件之后的安全文件写入的系统和方法。验证器可以是具有时间限制的授权证书，消息认证代码的向量，或者具有在无服务器分布式文件系统的成员之间共享的秘密的单个消息认证器。无服务器分布式文件系统至少包括3f + 1个参与的计算机成员，其中f表示系统可容忍的许多故障。该组至少需要一个身份验证器用于文件创建和文件上传。如果文件更改由验证者保护，并且该组能够验证验证器，则可以通过未经身份验证的通道对存储在成员中的文件进行任何更改。

72. 发明授权

US07260626B2 Wire protocol for a media server system 有权
标题翻译：用于媒体服务器系统的线路协议
公开(公告)号：US07260626B2
公开(公告)日：2007-08-21
申请号：US11047008
申请日：2005-01-31
申请人： William J. Bolosky , Craig Dowell , Robert P. Fitzgerald , Steven P. Levi , Jan de Rie , Richard F. Rashid
发明人： William J. Bolosky , Craig Dowell , Robert P. Fitzgerald , Steven P. Levi , Jan de Rie , Richard F. Rashid
IPC分类号： G06F15/16
CPC分类号： H04L65/4084 , G06F19/00 , H04L29/06 , H04L29/06027 , H04L65/1069 , H04L65/4092 , H04L69/14
摘要： A wire protocol provides message formats for creating multiple network connections between a media server and a client. These multiple network connections may include a control link connection for passing control information and a data funnel connection for passing data of multiple media. The data funnel connection may be a multipoint-to-point connection that connects multiple data servers with the client. The protocol facilitates multiple requests being concurrently outstanding and asynchronous processing of requests. The protocol is designed to exist on top of a transport protocol layer.
摘要翻译：有线协议提供用于在媒体服务器和客户端之间创建多个网络连接的消息格式。这些多个网络连接可以包括用于传递控制信息的控制链路连接和用于传递多个媒体的数据的数据漏斗连接。数据渠道连接可以是将多个数据服务器与客户端连接的多点到点连接。该协议有助于多个请求同时处于未完成并且异步处理请求。该协议被设计为存在于传输协议层之上。

73. 发明授权

US07146424B2 File server system and method for scheduling data streams according to a distributed scheduling policy 失效
标题翻译：用于根据分布式调度策略调度数据流的文件服务器系统和方法
公开(公告)号：US07146424B2
公开(公告)日：2006-12-05
申请号：US10121813
申请日：2002-04-12
申请人： John R. Douceur , William J. Bolosky
发明人： John R. Douceur , William J. Bolosky
IPC分类号： G06F15/16
CPC分类号： H04N21/2326 , H04L29/06 , H04L67/10 , H04L67/32 , Y10S707/99937
摘要： A distributed file server system has multiple data servers connected to stream data files continuously over a network to multiple clients. Data files are distributed across the data servers so that data blocks of the data files are stored at each of the data servers. A scheduler is located at each of the data servers to manage distributed portions of a schedule. Each data server sees a different portion of the schedule, but no one data server sees the whole schedule. The scheduler facilitates service of requested data streams from its corresponding data server according to a schedule portion that is available to the data server. The scheduler determines whether to insert a new data stream into the current slot it presently owns in its schedule portion, or to wait for a subsequent slot in the schedule based on a thrifty policy.
摘要翻译：分布式文件服务器系统具有多个数据服务器连接，可通过网络将数据文件连续流式传输到多个客户端。数据文件分布在数据服务器上，使数据文件的数据块存储在每个数据服务器上。调度器位于每个数据服务器以管理日程表的分布式部分。每个数据服务器看到调度的不同部分，但没有一个数据服务器看到整个调度。调度器根据可用于数据服务器的调度部分便利来自其对应数据服务器的请求数据流的服务。调度器确定是否将新数据流插入其当前在其调度部分中拥有的当前时隙中，或者基于节俭策略等待该调度中的后续时隙。

74. 发明授权

US07043637B2 On-disk file format for a serverless distributed file system 失效
公开(公告)号：US07043637B2
公开(公告)日：2006-05-09
申请号：US09814259
申请日：2001-03-21
申请人： William J. Bolosky , Gerald Cermak , Atul Adya , John R. Douceur
发明人： William J. Bolosky , Gerald Cermak , Atul Adya , John R. Douceur
IPC分类号： G06F11/30
CPC分类号： G06F17/30097 , G06F19/00 , H04L9/0656 , H04L9/3239 , H04L9/3249 , H04L2209/20 , H04L2209/38 , H04L2209/60
摘要： A file format for a serverless distributed file system is composed of two parts: a primary data stream and a metadata stream. The data stream contains a file that is divided into multiple blocks. Each block is encrypted using a hash of the block as the encryption key. The metadata stream contains a header, a structure for indexing the encrypted blocks in the primary data stream, and some user information. The indexing structure defines leaf nodes for each of the blocks. Each leaf node consists of an access value used for decryption of the associated block and a verification value used to verify the encrypted block independently of other blocks. In one implementation, the access value is formed by hashing the file block and encrypting the resultant hash value using a randomly generated key. The key is then encrypted using the user's key as the encryption key. The verification value is formed by hashing the associated encrypted block using a one-way hash function. The file format supports verification of individual file blocks without knowledge of the randomly generated key or any user keys. To verify a block of the file, the file system traverses the tree to the appropriate leaf node associated with a target block to be verified. The file system hashes the target block and if the hash matches the access value contained in the leaf node, the block is authentic.

75. 发明授权

US06466987B2 Wire protocol for a media server system 有权
标题翻译：用于媒体服务器系统的线路协议
公开(公告)号：US06466987B2
公开(公告)日：2002-10-15
申请号：US09256017
申请日：1999-02-23
申请人： William J. Bolosky , Craig M Dowell , Robert P. Fitzgerald , Steven P Levi , Jan de Rie , Richard F. Rashid
发明人： William J. Bolosky , Craig M Dowell , Robert P. Fitzgerald , Steven P Levi , Jan de Rie , Richard F. Rashid
IPC分类号： G06F1300
CPC分类号： H04L29/06 , H04L29/06027 , H04L65/1069 , H04L69/14
摘要： A wire protocol provides message formats for creating multiple network connections between a media server and a client. These multiple network connections may include a control link connection for passing control information and a data funnel connection for passing data of multiple media. The data funnel connection may be a multipoint-to-point connection that connects multiple data servers with the client. The protocol facilitates multiple requests being concurrently outstanding and asynchronous processing of requests. The protocol is designed to exist on top of a transport protocol layer.
摘要翻译：有线协议提供用于在媒体服务器和客户端之间创建多个网络连接的消息格式。这些多个网络连接可以包括用于传递控制信息的控制链路连接和用于传递多个媒体的数据的数据漏斗连接。数据渠道连接可以是将多个数据服务器与客户端连接的多点到点连接。该协议有助于多个请求同时处于未完成并且异步处理请求。该协议被设计为存在于传输协议层之上。

76. 发明授权

US06339794B2 Wire protocol for a media server system 失效
公开(公告)号：US06339794B2
公开(公告)日：2002-01-15
申请号：US08569380
申请日：1995-12-08
申请人： William J. Bolosky , Craig M. Dowell , Robert P. Fitzgerald , Steven P. Levi , Jan de Rie , Richard F. Rashid
发明人： William J. Bolosky , Craig M. Dowell , Robert P. Fitzgerald , Steven P. Levi , Jan de Rie , Richard F. Rashid
IPC分类号： G06F15173
CPC分类号： H04L29/06 , H04L29/06027 , H04L65/1069 , H04L69/14
摘要： A wire protocol provides message formats for creating multiple network connections between a media server and a client. These multiple network connections may include a control link connection for passing control information and a data funnel connection for passing data of multiple media. The data funnel connection may be a multipoint-to-point connection that connects multiple data servers with the client. The protocol facilitates multiple requests being concurrently outstanding and asynchronous processing of requests. The protocol is designed to exist on top of a transport protocol layer.

77. 发明授权

US6118790A Audio server system for an unreliable network 失效
标题翻译：音频服务器系统为不可靠的网络
公开(公告)号：US6118790A
公开(公告)日：2000-09-12
申请号：US667095
申请日：1996-06-19
申请人： William J. Bolosky , Steven P. Levi , Mark D. VanAntwerp , Yoram Bernet
发明人： William J. Bolosky , Steven P. Levi , Mark D. VanAntwerp , Yoram Bernet
IPC分类号： H04L29/08 , H04L29/06 , H04N7/173 , H04J3/16
CPC分类号： H04L65/80 , H04L29/06 , H04N7/17336 , H04L29/06027
摘要： An audio server system is provided that sends audio sequences or mixed audio and still-picture sequences to subscribers at their request. To be used as an audio server system in the Internet environment, the audio server system must overcome the Internet's excessive loss of packets. The audio server system overcomes this problem by allowing for pre-specified packet sizes and pre-specified data rates. By allowing for pre-specified packet sizes, the audio server system can utilize an error correction scheme, such as parity encoding, so as to reduce the effects of the Internet's excessive loss of packets. Pre-specified data rates are provided by the audio server system so as to ensure that audio sequences or mixed audio sequences are not played faster than intended, which may lead to an increase in system data loss.
摘要翻译：提供了一种音频服务器系统，其在请求时向用户发送音频序列或混合音频和静态图像序列。为了在互联网环境中用作音频服务器系统，音频服务器系统必须克服互联网过多的数据包丢失。音频服务器系统通过允许预先指定的包大小和预先指定的数据速率克服了这个问题。通过允许预先指定的分组大小，音频服务器系统可以利用诸如奇偶编码的纠错方案，以便减少因特网过度丢失分组的影响。预先指定的数据速率由音频服务器系统提供，以确保音频序列或混合音频序列的播放速度比预期的要快，这可能导致系统数据丢失的增加。

78. 发明授权

US5991804A Continuous media file server for cold restriping following capacity change by repositioning data blocks in the multiple data servers 失效
标题翻译：连续媒体文件服务器通过重新定位多个数据服务器中的数据块，进行容量更改后的冷重新启动
公开(公告)号：US5991804A
公开(公告)日：1999-11-23
申请号：US879405
申请日：1997-06-20
申请人： William J. Bolosky , Dwayne R. Need , Siddhartha Debgupta
发明人： William J. Bolosky , Dwayne R. Need , Siddhartha Debgupta
IPC分类号： G06F11/20 , G06F13/00
CPC分类号： G06F11/2094 , G06F11/1096 , G06F11/2097
摘要： A continuous media file server has a controller connected to multiple data servers. Each data server supports at least one storage disk. Data files are distributed across the data servers so that data blocks of the data files are stored on each of the storage disks according to a present striping layout. The file server employs declustered mirroring techniques in which data is redundantly copied and stored on other disks and servers to guard against component failure. In the event that the storage capacity of the media file server is changed (i.e., by adding or removing one or more storage disks), the continuous media file server is restriped in a three-phase process. During the first phase, the controller determines a new striping layout of the data files across the storage disks which accounts for the capacity change. The controller then creates an ordered work list describing the data block moves that a corresponding data server needs to make to convert from the present striping layout to the new striping layout. The controller distributes the list to the data servers. The order of the latter two phases depends on whether disks are being added or removed. In one of the two final phases, the data servers reorganize the redundancy data for the new disk configuration. In the other of the two final phases, the data servers execute their respective work lists and communicate with one another to move the data blocks to the appropriate disks in conformance with the new striping layout.
摘要翻译：连续的媒体文件服务器具有连接到多个数据服务器的控制器。每个数据服务器至少支持一个存储磁盘。数据文件分布在数据服务器上，使得数据文件的数据块根据当前的条带布局存储在每个存储盘上。文件服务器采用分层镜像技术，其中数据被冗余复制并存储在其他磁盘和服务器上，以防止组件故障。在媒体文件服务器的存储容量改变（即，通过添加或移除一个或多个存储盘）的情况下，连续媒体文件服务器被重新分配在三相处理中。在第一阶段，控制器确定跨存储磁盘的数据文件的新的条带布局，这些数据文件考虑了容量的变化。然后，控制器创建一个有序的工作列表，描述相应的数据服务器需要进行的数据块移动，以从当前的条带布局转换为新的条带布局。控制器将列表分发到数据服务器。后两个阶段的顺序取决于是否添加或删除磁盘。在两个最后阶段之一中，数据服务器重新组织新磁盘配置的冗余数据。在两个最后阶段的另一个阶段，数据服务器执行其各自的工作列表并相互通信，以便根据新的条带布局将数据块移动到相应的磁盘。

79. 发明授权

US5903563A Method and system for combining data from multiple servers into a single continuous data stream using a switch 失效
标题翻译：使用交换机将来自多个服务器的数据组合成单个连续数据流的方法和系统
公开(公告)号：US5903563A
公开(公告)日：1999-05-11
申请号：US700740
申请日：1996-08-15
申请人： Richard F. Rashid , William J. Bolosky , Robert P. Fitzgerald
发明人： Richard F. Rashid , William J. Bolosky , Robert P. Fitzgerald
IPC分类号： H04Q3/00 , H04L12/70 , H04L12/801 , H04L12/911 , H04L12/931 , H04N7/173 , H04Q11/04 , H04L12/50
CPC分类号： H04L49/3009 , H04L49/20 , H04L49/255 , H04L49/3081 , H04L49/309 , H04N21/21 , H04N21/23 , H04N7/17318 , H04N7/17336 , H04Q11/0478 , H04L2012/5638 , H04L2012/5664 , H04L2012/5674 , H04L2012/5679 , H04L49/254 , H04L49/30
摘要： An ATM switch is used to combine blocks of data from multiple data servers into a single continuous data stream. The ATM switch is especially well adapted for use in a video-on-demand environment. Blocks of data may be striped across the data servers so that they are output from respective data servers in sequence. Transmission of data from the data servers to the ATM switch is scheduled so that the blocks of data are output in sequence without undue delay between the transmission of blocks of data from the servers. Synchronizing tokens are provided to the data servers to specify that they are to output data of a given sequence and to direct the sequence to a given virtual channel. As a result, the system of this invention appears to output single continuous data streams from the output ports of the ATM switch.
摘要翻译： ATM交换机用于将来自多个数据服务器的数据块组合成单个连续的数据流。 ATM交换机特别适用于视频点播环境。数据块可以跨数据服务器分条，从而依次从相应的数据服务器输出数据。调度从数据服务器到ATM交换机的数据传输，使数据块按顺序输出，而不会在从服务器发送数据块之间造成不必要的延迟。同步令牌被提供给数据服务器以指定它们要输出给定序列的数据并将序列引导到给定的虚拟通道。结果，本发明的系统似乎从ATM交换机的输出端口输出单个连续的数据流。

80. 发明授权

US5583868A Method and system for combining data from multiple servers into a single continuous data stream using a switch 失效
公开(公告)号：US5583868A
公开(公告)日：1996-12-10
申请号：US280190
申请日：1994-07-25
申请人： Richard F. Rashid , William J. Bolosky , Robert P. Fitzgerald
发明人： Richard F. Rashid , William J. Bolosky , Robert P. Fitzgerald
IPC分类号： H04Q3/00 , H04L12/70 , H04L12/801 , H04L12/911 , H04L12/931 , H04N7/173 , H04Q11/04 , H04L12/56
CPC分类号： H04L49/3009 , H04L49/20 , H04L49/255 , H04L49/3081 , H04L49/309 , H04N21/21 , H04N21/23 , H04N7/17318 , H04N7/17336 , H04Q11/0478 , H04L2012/5638 , H04L2012/5664 , H04L2012/5674 , H04L2012/5679 , H04L49/254 , H04L49/30
摘要： An ATM switch is used to combine blocks of data from multiple data servers into a single continuous data stream. The ATM switch is especially well adapted for use in a video-on-demand environment. Blocks of data may be striped across the data servers so that they are output from respective data servers in sequence. Transmission of data from the data servers to the ATM switch is scheduled so that the blocks of data are output in sequence without undue delay between the transmission of blocks of data from the servers. Synchronizing tokens are provided to the data servers to specify that they are to output data of a given sequence and to direct the sequence to a given virtual channel. As a result, the system of this invention appears to output single continuous data streams from the output ports of the ATM switch.

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