公开(公告)号：WO2004097630A2

公开(公告)日：2004-11-11

申请号：PCT/GB2004001358

申请日：2004-03-31

Applicant: IBM ,  IBM UK ,  ANANTHANARAYANAN RAJAGOPAL ,  EVERHART CRAIG ,  JUJJURI VENKATESWARARAO ,  REES ROBERT

Inventor： ANANTHANARAYANAN RAJAGOPAL ,  EVERHART CRAIG ,  JUJJURI VENKATESWARARAO ,  REES ROBERT

IPC: G06F9/46 ,  G06F9/40

CPC classification number: G06F9/526 ,  G06F2209/522 ,  Y10S707/99938 ,  Y10S707/99944

Abstract: Access to objects of a computing environment is managed. Access to an object of the computing environment is prohibited via one cached entity corresponding to the object, while access to the object is allowed via another cached entity. The cached entities are concurrently maintained for a period of time, but the one cached entity is in a shadow state. In one example, the cached entities are session locks and the object is a file system object.

Abstract translation: 管理对计算环境对象的访问。 通过与对象相对应的一个缓存实体禁止访问计算环境的对象，同时通过另一个缓存实体允许访问对象。 缓存的实体同时维护一段时间，但是一个缓存的实体处于阴影状态。 在一个示例中，缓存的实体是会话锁，对象是文件系统对象。

公开(公告)号：JP2009059374A

公开(公告)日：2009-03-19

申请号：JP2008242286

申请日：2008-09-22

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： ANANTHANARAYANAN RAJAGOPAL ,  BECKER-SZENDY RALPH A ,  REES ROBERT M ,  BURNS RANDAL C ,  LONG DARRELL D E ,  JUJJURI VENKATESWARARAO ,  WOLFE DAVID M ,  YOUNG JASON C

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/10 ,  G06F13/10

CPC classification number: G06F3/0613 ,  G06F3/0643 ,  G06F3/0656 ,  G06F3/067 ,  G06F12/10

Abstract: PROBLEM TO BE SOLVED: To provide various copy-on-write execution forms in computing environment. SOLUTION: These execution forms include: the use of a reading mapping table to execute a first virtual block-physical block mapping to be used to read blocks of data in the file to be copied-on-write from a physical storage device for correction; and the use of different write mapping tables to execute a second virtual block-physical block mapping to be used to write the block having corrected file data into the physical storage device. Here, the copy-on-write operation of block of data is achieved by using single write operation. In another embodiment, distributed copy-on-write operation of a file in client-server environment is presented. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：在计算环境中提供各种写时复制执行形式。 解决方案：这些执行形式包括：使用读取映射表来执行第一虚拟块 - 物理块映射，以用于从物理存储设备读写要复制的文件中的数据块 纠正 以及使用不同的写入映射表来执行用于将具有校正的文件数据的块写入物理存储设备的第二虚拟块 - 物理块映射。 这里，通过使用单个写入操作来实现数据块的写时复制操作。 在另一个实施例中，呈现了客户机 - 服务器环境中的文件的分布式写时拷贝操作。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2004326801A

公开(公告)日：2004-11-18

申请号：JP2004129471

申请日：2004-04-26

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： ANANTHANARAYANAN RAJAGOPAL ,  BECKER-SZENDY RALPH A ,  REES ROBERT M ,  BURNS RANDAL C ,  LONG DARRELL D E ,  JUJJURI VENKATESWARARAO ,  WOLFE DAVID M ,  YOUNG JASON C

IPC: G06F3/06 ,  G06F12/00 ,  G06F12/10

CPC classification number: G06F3/0613 ,  G06F3/0643 ,  G06F3/0656 ,  G06F3/067 ,  G06F12/10

Abstract: PROBLEM TO BE SOLVED: To present various copy on writing embodiments in a computing environment. SOLUTION: In this system, a certain copy on writing embodiment includes using a reading mapping table in order to execute first virtual block-physical block mapping to be used to read a data block of the file that is subjected to copy on writing from a physical storage device for correction and using a different writing mapping table in order to execute second virtual block-physical block mapping to be used to write a block with corrected file data to the physical storage device. In this case, copy on writing for the data block is accomplished by using a single writing operation. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：在计算环境中呈现写入实施例的各种副本。 解决方案：在该系统中，写入实施例的某个副本包括使用读取映射表来执行第一虚拟块 - 物理块映射以用于读取写入时复制的文件的数据块 从用于校正的物理存储设备和使用不同的写入映射表，以便执行第二虚拟块 - 物理块映射以用于将具有校正的文件数据的块写入物理存储设备。 在这种情况下，通过使用单个写入操作来完成数据块的写入复制。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004326800A

公开(公告)日：2004-11-18

申请号：JP2004129396

申请日：2004-04-26

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： YOUNG JASON C ,  ANANTHANARAYANAN RAJAGOPAL ,  BURNS RANDAL C ,  LONG DARRELL D E ,  REES ROBERT M ,  BECKER-SZENDY RALPH A ,  SEEGER JAMES J ,  WOLFE DAVID M

IPC: G06F12/00 ,  G06F17/30

CPC classification number: G06F17/30067 ,  Y10S707/959 ,  Y10S707/99953 ,  Y10S707/99955

Abstract: PROBLEM TO BE SOLVED: To provide a system and a method for managing logical versions of a file system made through a near-instantaneous copy process. SOLUTION: Each logical version of the file system, including a primary version, is assigned a unique epoch number or other identifying value, and each file system object is assigned two epoch numbers that define a space of logical versions for which the object exists. A list of all valid epoch numbers are maintained in a version table. The near-instantaneous creation of a logical version of the file system requires inserting a unique epoch number entry in the version table and the next epoch number to the new logical version. An original state of the system is preserved through the use of a copy-on-write procedure for file system objects that are reference by that logical version of file system. Accordingly, new logical versions of file systems are maintained and original states of previous states of the logical versions of file systems are preserved. COPYRIGHT: (C)2005,JPO&NCIPI

公开(公告)号：GB2492870A

公开(公告)日：2013-01-16

申请号：GB201210249

申请日：2011-04-08

Applicant: IBM

Inventor： SARKAR PRASENJIT ,  PANDEY PRASHANT ,  PUCHA HIMABINDU ,  SHAH MANSI AJIT ,  TEWARI RENU ,  GUPTA KARAN ,  ANANTHANARAYANAN RAJAGOPAL

IPC: G06F3/06 ,  G06F17/30

Abstract: Embodiments of the invention relate to optimizing a file system for different types of applications in a compute cluster using dynamic block size granularity. An exemplary embodiment includes reserving a predetermined number of storage allocation regions for each node in a cluster, wherein each storage allocation region comprises a set of contiguous data blocks on a single storage disk of locally attached storage; using a contiguous set of data blocks on a single storage disk of locally attached storage as a file systems block allocation granularity for striping data to be stored in the file system for a compute operation in the cluster; and using a single data block of a shared storage subsystem as the file systems block allocation granularity for striping data to be stored in the file system for a data access operation in the cluster.

公开(公告)号：AT496332T

公开(公告)日：2011-02-15

申请号：AT04724639

申请日：2004-03-31

Applicant: IBM

Inventor： ANANTHANARAYANAN RAJAGOPAL ,  EVERHART CRAIG ,  JUJJURI VENKATESWARARAO ,  REES ROBERT

IPC: G06F9/46 ,  G06F12/08 ,  G06F12/12

Abstract: Access to objects of a computing environment is managed. Access to an object of the computing environment is prohibited via one cached entity corresponding to the object, while access to the object is allowed via another cached entity. The cached entities are concurrently maintained for a period of time, but the one cached entity is in a shadow state. In one example, the cached entities are session locks and the object is a file system object.

公开(公告)号：SG143036A1

公开(公告)日：2008-06-27

申请号：SG2004018016

申请日：2004-03-30

Applicant: IBM

Inventor： YOUNG JASON C ,  ANANTHANARAYANAN RAJAGOPAL ,  BURNS RANDAL C ,  LONG DARRELL D E ,  REES ROBERT M ,  BECKER-SZENDY RALPH A ,  SEEGER JAMES J

IPC: G06F17/30 ,  G06F12/00

Abstract: Managing Filesystem Versions A system and method for managing logical versions of a fdesystem made through a near-instantaneous copy process is provided. Each logical version of the filesystem, including the primary version, is assigned a unique epoch number or other identifying value, and each filesystem object is assigned two epoch numbers that define the space of logical versions for which the object exists. A list of all valid epoch numbers are maintained in a version table. The near-instantaneous creation of a logical version of the filesystem requires inserting a unique epoch number entry in the version table (106) and the next epoch number to the new logical version. An original state of the system is preserved through the use of a copy-on-write procedure for filesystem objects that are reference by that logical filesystem version (120). Accordingly, filesystem versions are maintained and original states of previous states of the logical filesystem versions are preserved.

公开(公告)号：DE112011101317T5

公开(公告)日：2013-01-31

申请号：DE112011101317

申请日：2011-04-08

Applicant: IBM

Inventor： TEWARI RENU ,  ANANTHANARAYANAN RAJAGOPAL ,  SARKAR PRASENJIT ,  PANDEY PRASHANT ,  PUCHA HIMABINDU ,  SHAH MANSI AJIT ,  GUPTA KARAN

IPC: G06F3/06 ,  G06F17/30

Abstract: Ausführungsformen der Erfindung beziehen sich auf das Optimieren eines Dateisystems für unterschiedliche Typen von Anwendungen in einem Datenverarbeitungs-Cluster unter Verwendung von dynamischer Blockgrößen-Granularität. Eine beispielhafte Ausführungsform aufweist Reservieren einer vordefinierten Anzahl von Speicherzuordnungsbereichen für jeden Knoten in einem Cluster, wobei jeder Speicherzuordnungsbereich einen Satz an zusammenhängenden Datenblöcken auf einer einzelnen Speicherplatte eines lokal angeschlossenen Speichers aufweist; Verwenden eines zusammenhängenden Satzes von Datenblöcken auf einer einzelnen Speicherplatte eines lokal angeschlossenen Speichers als Blockzuordnungs-Granularität zum Stripen von Daten, die für eine Datenverarbeitungsoperation in dem Cluster in dem Dateisystem gespeichert werden sollen; und Verwenden eines einzelnen Datenblockes eines gemeinsam genutzten Speichersystems als Blockzuordnungs-Granularität zum Stripen von Daten, die für eine Datenzugriffsoperation in dem Cluster in dem Dateisystem gespeichert werden sollen.

公开(公告)号：DE602004031101D1

公开(公告)日：2011-03-03

申请号：DE602004031101

申请日：2004-03-31

Applicant: IBM

Inventor： ANANTHANARAYANAN RAJAGOPAL ,  EVERHART CRAIG ,  JUJJURI VENKATESWARARAO ,  REES ROBERT

IPC: G06F9/46 ,  G06F12/08 ,  G06F12/12

公开(公告)号：SG143951A1

公开(公告)日：2008-07-29

申请号：SG2004023149

申请日：2004-04-23

Applicant: IBM

Inventor： ANANTHANARAYANAN RAJAGOPAL ,  BECKER-SZENDY RALPH A ,  REES ROBERT M ,  BURNS RANDAL C ,  LONG DARRELL D E ,  VENKATESWARARAO JUJJURI ,  WOLFE DAVID M

IPC: G06F3/06 ,  G06F12/00 ,  G06F12/10

Abstract: METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR IMPLEMENTING COPY-ON-WRITE OF A FILE Various copy-on-write implementations for a computing environment are disclosed. One copy-on-write implementation includes employing a read mapping table (900) to map virtual blocks ( 1-4) to physical blocks (A, D, G and L) for use in reading a block of data of a file to be copy-on-written from physical storage for modification; and employing a different, write mapping table (910) to map virtual blocks (1-4) to physical blocks (W, X, Y and Z) for use in writing a modified block of the file data to physical storage, wherein copy-on-write of the block of data is achieved using a single write operation.