公开(公告)号：EP1830272B1

公开(公告)日：2009-05-20

申请号：EP07011973.0

申请日：2002-03-12

Applicant: MICROSOFT CORPORATION

Inventor： Adya, Atul ,  Bolosky, William J. ,  Cermak, Gerald ,  Douceur, John R. ,  Theimer, Marvin M. ,  Wattenhofer, Robert P.

IPC: G06F11/20 ,  G06F17/30 ,  H04L29/06

CPC classification number: G06F17/30094 ,  G06F17/30171 ,  G06F17/30899 ,  G06F2201/825 ,  H04L63/0823 ,  H04L63/123 ,  Y10S707/956 ,  Y10S707/99931 ,  Y10S707/99938

公开(公告)号：EP1830272A2

公开(公告)日：2007-09-05

申请号：EP07011973.0

申请日：2002-03-12

Applicant: MICROSOFT CORPORATION

Inventor： Adya, Atul ,  Bolosky, William J. ,  Cermak, Gerald ,  Douceur, John R. ,  Theimer, Marvin M. ,  Wattenhofer, Robert P.

IPC: G06F11/20 ,  G06F17/30

CPC classification number: G06F17/30094 ,  G06F17/30171 ,  G06F17/30899 ,  G06F2201/825 ,  H04L63/0823 ,  H04L63/123 ,  Y10S707/956 ,  Y10S707/99931 ,  Y10S707/99938

Abstract: A serverless distributed file system manages the storage of files and directories using one or more directory groups. The directories may be managed using Byzantine-fault-tolerant groups, whereas files are managed without using Byzantine-fault-tolerant groups. Additionally, the file system may employ a hierarchical namespace to store files. Furthermore, the directory group may employ a plurality of locks to control access to objects (e.g., files and directories) in each directory.

Abstract translation: 无服务器分布式文件系统使用一个或多个目录组管理文件和目录的存储。 可以使用拜占庭容错组来管理目录，而不使用拜占庭容错组来管理文件。 此外，文件系统可以使用分层命名空间来存储文件。 此外，目录组可以使用多个锁来控制对每个目录中的对象（例如，文件和目录）的访问。

公开(公告)号：EP0563621A2

公开(公告)日：1993-10-06

申请号：EP93103643.8

申请日：1993-03-08

Applicant: International Business Machines Corporation

Inventor： Elko, David Arlen ,  Frey, Jeffrey Alan ,  Helffrich, Audrey Ann ,  Nick, Jeffrey Mark ,  Swanson, Michael Dustin

IPC: G06F11/00 ,  G06F12/08

CPC classification number: G06F12/0813 ,  G06F11/2007 ,  G06F11/22 ,  G06F11/2205 ,  G06F2201/825

Abstract: Apparatus and method insuring that data objects used to maintain state information for shared data at a local central processing complex (CPC) is coherent with respect to state information maintained at a structured external storage facility (SES) over a link is valid. An error detector is attached to the CPC side of the link for detecting errors on the link, and, when an error is detected, setting a error state pending (ESP) latch to indicate that the link has failed and that the shared data in the local data object may be invalid because a message invalidating the data may not have been received by the CPC. In data processing operations, the ESP latch is interrogated by a central processor in the CPC to determine the health of the message path to the SES facility. A local cache vector reflecting the validity of the shared data in the local cache may then be interrogated to determine if the shared data in the local cache is valid. If a healthy path has continuously existed and the vector indicates that the local cache data is valid, the integrity of the data can be relied on.

Abstract translation: 设备和方法做投保用于在本地中央处理复合体（CPC）以维持共享数据的状态信息的数据对象是相干的相对于保持在通过链路的结构化外部存储设施（SES）是有效的状态信息。 误差检测器被安装在连杆的CPC侧的链路上检测错误，并且，当检测到一个错误，设定未决（ESP）锁存器，以指示DASS死链路已失败的错误状态，并且没有在共享数据 由于一个消息中的数据无效可能尚未被中共接收本地数据对象可能是无效的。 在数据处理操作，所述ESP锁存器由在CPC中央处理器询问以确定矿消息路径到SES设施的健康。 反映了localcache共享数据的有效性的本地高速缓存矢量然后可被询问，以确定矿如果在高速缓存的共享数据是有效的本地。 如果一个健康路径已经持续存在和矢量指示DASS死localcache数据是有效的，则数据的完整性可以依靠。

公开(公告)号：EP0541381A2

公开(公告)日：1993-05-12

申请号：EP92310162.0

申请日：1992-11-05

Applicant: International Business Machines Corporation

Inventor： Mohan, Chandrasekaran ,  Narang, Inderpal S. ,  Teng, James Z.

IPC: G06F11/14

CPC classification number: G06F11/1471 ,  G06F2201/825 ,  G06F2201/87 ,  Y10S707/99938 ,  Y10S707/99953

Abstract: In a multi-system data sharing complex 10, 12, 13, a database system can write updated pages to a shared electronic store 16, for a fast write. Other database systems can obtain pages written to the shared store for further modification without the pages first being written to stable storage 14, 15. However, pages are eventually written to the stable storage in a castout process. Recovery of a database from failure of the shared store is bounded by determination of a recovery boundary which, when applied to the union of database system transaction logs, establishes a point in front of which are found log records of modifications to pages which were in the shared store when it failed. These log records are applied to page versions obtained from stable storage to recover from failure of the shared store.

Abstract translation: 在多系统数据共享复合体10,12,13中，数据库系统可以将更新的页面写入共享电子商店16，以进行快速写入。 其他数据库系统可以获得写入共享存储的页面，以便进一步修改，而无需首先将页面写入稳定存储器14,15。然而，页面最终将在转储过程中写入稳定存储器。 通过确定恢复边界来限制数据库的恢复，该恢复边界在应用于数据库系统事务日志的并集时建立一个点，在其前面找到对位于 共享存储失败时。 这些日志记录应用于从稳定存储获得的页面版本，以从共享存储的故障中恢复。

公开(公告)号：EP3232609A1

公开(公告)日：2017-10-18

申请号：EP15911889.2

申请日：2015-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： FENG, Rui ,  CHEN, Guang ,  LIU, Jun

IPC: H04L12/24

CPC classification number: G06F11/2023 ,  G06F11/16 ,  G06F11/203 ,  G06F2201/805 ,  G06F2201/825 ,  H04L67/1097

Abstract: The present invention provides a technique for processing a lock request. A first lock server is a takeover lock server of a second lock server. The first lock server enters a silent state after learning that a fault occurs in the second lock server, where a silent range is a resource for which the second lock server has assigned permission. The first lock server receives an acquire lock request that is originally sent to the second lock server, and the first lock server assigns lock permission for a corresponding resource according to the acquire lock request if the second lock server has not assigned resource for the resource. By means of this solution, an impact range of a fault occurring in a lock server can be reduced, and stability of a lock management system is improved.

Abstract translation: 本发明提供了一种用于处理锁定请求的技术。 第一锁定服务器是第二锁定服务器的接管锁定服务器。 第一锁服务器在获知第二锁服务器发生故障后，进入无声状态，其中无声范围为第二锁服务器已经分配权限的资源。 第一锁服务器接收最初发送给第二锁服务器的获取锁请求，如果第二锁服务器没有为该资源分配资源，则第一锁服务器根据获取的锁请求为相应资源分配锁权限。 通过该方案，可以减少锁服务器发生故障的影响范围，提高锁管理系统的稳定性。

公开(公告)号：EP2854034B1

公开(公告)日：2017-03-29

申请号：EP14186369.6

申请日：2014-09-25

Applicant: Samsung Electronics Co., Ltd

Inventor： Lee, Ju-Pyung

IPC: G06F11/20

CPC classification number: G06F3/065 ,  G06F3/0604 ,  G06F3/0659 ,  G06F3/0689 ,  G06F11/2087 ,  G06F2201/825

Abstract: A data mirroring control apparatus includes a command distributing unit configured to transmit a first write command to a plurality of mirroring storage devices, the first write command including an instruction for data requested by a host to be written; and a memory lock setting unit configured to set a memory lock on the data requested by the host to be written among data stored in a host memory and configured to release the memory lock on the data after the data with the memory lock is written to the plurality of mirroring storage devices.

Abstract translation: 数据镜像控制装置包括：命令分配单元，被配置为向多个镜像存储装置发送第一写入命令，所述第一写入命令包括由要被写入的主机请求的数据的指令; 以及存储器锁设置单元，被配置为对存储在主机存储器中的数据中的要写入的主机所请求的数据设置存储器锁定，并且被配置为在具有存储器锁定的数据被写入到数据之后释放对存储器锁的存储器锁定 多个镜像存储设备。

公开(公告)号：EP1341088B1

公开(公告)日：2009-10-21

申请号：EP03290307.2

申请日：2003-02-07

Applicant: Bull HN Information Systems Inc.

Inventor： Egolf, David A. ,  Hardesty, Eric W.

IPC: G06F11/14

CPC classification number: G06F11/1474 ,  G06F11/1441 ,  G06F2201/80 ,  G06F2201/825

Abstract: A data processing system participating in two-phase transaction processing operations which, when a system failure occurs while one or more transactions are in process, can successfully rebuild "in-doubt" states even when another system failure occurs during an attempt to effect the rebuild. The system includes a file management system having exclusive access to reserved locations in the memory for reading and writing meta-data therein and physical file access logic selectively coupling the memory and the database access application, the physical file access logic incorporating file protections which are controlled by the file management system; such that, in the event of a failure, the local state of the transaction can be faithfully rebuilt after restart by accessing the meta-data. Upon restart after a failure, the results of incomplete non-"in-doubt" transactions are removed, the files which have been updated by "in-doubt" transactions are locked and normal access to the affected database is then permitted.

公开(公告)号：EP1341088A3

公开(公告)日：2008-03-12

申请号：EP03290307.2

申请日：2003-02-07

Applicant: Bull HN Information Systems Inc.

Inventor： Egolf, David A. ,  Hardesty, Eric W.

IPC: G06F11/14

CPC classification number: G06F11/1474 ,  G06F11/1441 ,  G06F2201/80 ,  G06F2201/825

Abstract: A data processing system participating in two-phase transaction processing operations which, when a system failure occurs while one or more transactions are in process, can successfully rebuild "in-doubt" states even when another system failure occurs during an attempt to effect the rebuild. The system includes a file management system having exclusive access to reserved locations in the memory for reading and writing meta-data therein and physical file access logic selectively coupling the memory and the database access application, the physical file access logic incorporating file protections which are controlled by the file management system; such that, in the event of a failure, the local state of the transaction can be faithfully rebuilt after restart by accessing the meta-data. Upon restart after a failure, the results of incomplete non-"in-doubt" transactions are removed, the files which have been updated by "in-doubt" transactions are locked and normal access to the affected database is then permitted.

公开(公告)号：EP1341088A2

公开(公告)日：2003-09-03

申请号：EP03290307.2

申请日：2003-02-07

Applicant: Bull HN Information Systems Inc.

Inventor： Egolf, David A. ,  Hardesty, Eric W.

IPC: G06F11/14

CPC classification number: G06F11/1474 ,  G06F11/1441 ,  G06F2201/80 ,  G06F2201/825

Abstract: A data processing system participating in two-phase transaction processing operations which, when a system failure occurs while one or more transactions are in process, can successfully rebuild "in-doubt" states even when another system failure occurs during an attempt to effect the rebuild. The system includes a file management system having exclusive access to reserved locations in the memory for reading and writing meta-data therein and physical file access logic selectively coupling the memory and the database access application, the physical file access logic incorporating file protections which are controlled by the file management system; such that, in the event of a failure, the local state of the transaction can be faithfully rebuilt after restart by accessing the meta-data. Upon restart after a failure, the results of incomplete non-"in-doubt" transactions are removed, the files which have been updated by "in-doubt" transactions are locked and normal access to the affected database is then permitted.

Abstract translation: 参与两阶段事务处理操作的数据处理系统，当一个或多个事务正在进行时发生系统故障时，即使在尝试执行重建时发生另一个系统故障，也可以成功地重建“无疑”状态 。 该系统包括文件管理系统，其具有对存储器中用于读取和写入元数据的保留位置的独占访问，以及选择性地耦合存储器和数据库访问应用的物理文件访问逻辑，所述物理文件访问逻辑包含被控制的文件保护 由文件管理系统; 使得在发生故障的情况下，可以通过访问元数据来重新启动事务的本地状态。 失败后重新启动，不完整的“不确定”事务的结果将被删除，已被“无疑”事务更新的文件被锁定，然后允许对受影响的数据库进行正常访问。

公开(公告)号：EP1271316A1

公开(公告)日：2003-01-02

申请号：EP01115831.8

申请日：2001-06-28

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Frank, Claus-Andreas ,  Mohr, Guenther ,  Sommer, Gerhard ,  Tan, Hok-Tjhoen

IPC: G06F11/14

CPC classification number: G06F11/1466 ,  G06F2201/825 ,  Y10S707/99955

Abstract: Während der Sicherung von in einzelnen Dateien abgelegten Daten einer Datenbank ist aus Konsistenzgründen eine Veränderung der Daten in den einzelnen Dateien nicht zulässig. Aus diesem Grund werden die Dateien ab einem bestimmten Zeitpunkt während eines Sicherungslaufes für verändernde Zugriffe gesperrt. Erfindungsgemäß wird der Sicherungslauf in zwei Schritten durchgeführt. Im ersten Schritt werden die Dateien übertragen, ohne daß eine Veränderungssperre besteht. In einer Aufzeichnungsdatei werden alle Dateien vermerkt, die während des ersten Schrittes verändert werden. Diese Dateien werden in einem zweiten Schritt erneut übertragen. Nur während des zweiten Schrittes ist eine Veränderungssperre erforderlich. Leistung und Funktionsfähigkeit des auf die Datenbank zugreifenden Systems werden durch das erfindungsgemäße Verfahren nur geringfügig beeinträchtigt. Es ist davon auszugehen, daß die Anzahl der im zweiten Schritt zu übertragenden Dateien sehr viel kleiner ist als die Anzahl der im ersten Schritt zu übertragenden Dateien. Daher wird eine wesentlich verkürzte Veränderungssperre erreicht.

Abstract translation: 在第一个步骤中，将数据从工作介质到备份介质的反式mitted。 在要备份的数据的变化被允许在此步骤的工作介质，但在一个记录文件单独标记。 在第二步骤中，反式mitted到备份介质的数据被通过第一步骤的处理期间进行的数据的变化的补充。 在第二步骤期间，要被备份的数据不可更改是允许的。