公开(公告)号：US20180189319A1

公开(公告)日：2018-07-05

申请号：US15397663

申请日：2017-01-03

Applicant: International Business Machines Corporation

Inventor： Deepavali M. Bhagwat ,  Marc Eshel ,  Dean Hildebrand ,  Manoj P. Naik ,  Wayne A. Sawdon ,  Frank B. Schmuck ,  Renu Tewari

IPC: G06F17/30

Abstract: One embodiment provides a method for storage management in a hierarchical file system. The method includes tracking directories for sub-file systems of the hierarchical set of file systems and maintaining a corresponding directory in a top-file system and a number of symbolic pointers in the corresponding directory which each point from the corresponding directory to a sub-file system where any portion of the tracked directory resides. If available space in a first sub-file system is below a threshold, the system identifies a second sub-file system with available space above the threshold, wherein the first sub-file system contains a first portion of the directory. If a second portion of the directory does not exist in the second sub-file system, the system creates the second portion of the directory in the second sub-file system and creates a link from the first portion of the directory to the second portion of the directory.

公开(公告)号：US20180189310A1

公开(公告)日：2018-07-05

申请号：US15397644

申请日：2017-01-03

Applicant: International Business Machines Corporation

Inventor： Deepavali M. Bhagwat ,  Marc Eshel ,  Dean Hildebrand ,  Manoj P. Naik ,  Wayne A. Sawdon ,  Frank B. Schmuck ,  Renu Tewari

IPC: G06F17/30

CPC classification number: G06F16/122 ,  G06F16/185

Abstract: One embodiment provides a method for storage management in a hierarchical file system. The method includes tracking directories for sub-file systems of the hierarchical set of file systems and maintaining a directory while providing the directory is capable of residing in more than one sub-file system within the hierarchical file system. If available space in a first sub-file system is below a threshold, the system identifies a second sub-file system with available space above the threshold, wherein the first sub-file system contains a first portion of the directory. If a second portion of the directory exists in the second sub-file system, the system creates or expands a file in the second portion of the directory, otherwise the system first creates the second portion of the directory in the second sub-file system and then creates a link from the first portion of the directory to the second portion of the directory.

公开(公告)号：US20180189304A1

公开(公告)日：2018-07-05

申请号：US15397620

申请日：2017-01-03

Applicant: International Business Machines Corporation

Inventor： Deepavali M. Bhagwat ,  Marc Eshel ,  Dean Hildebrand ,  Wayne A. Sawdon ,  Frank B. Schmuck

IPC: G06F17/30

CPC classification number: G06F16/13 ,  G06F16/1727 ,  G06F16/188

Abstract: One embodiment provides a method for storage management in an aggregated file system. The method includes tracking inode numbers for sub-file systems of the aggregated file system. A request for a unique range of inode numbers in the aggregated file system is received. The unique range of inode numbers is provided to one or more sub-file systems of the aggregated file system while providing that each sub-file system of the aggregated file system has a required range of inode numbers and that no two sub-file systems have overlapping inode numbers.

公开(公告)号：US20180189124A1

公开(公告)日：2018-07-05

申请号：US15397601

申请日：2017-01-03

Applicant: International Business Machines Corporation

Inventor： Deepavali M. Bhagwat ,  Marc Eshel ,  Dean Hildebrand ,  Manoj P. Naik ,  Wayne A. Sawdon ,  Frank B. Schmuck ,  Renu Tewari

IPC: G06F11/07 ,  G06F17/30

CPC classification number: G06F11/0793 ,  G06F16/10 ,  G06F16/188

Abstract: One embodiment provides a method for file system namespace rebuilding. The method includes creating attribute data structures for a top-file system and sub-file system hierarchy system. The attribute data structures including hierarchy relationship information. The attribute data structures are stored in the sub-file systems. The top-file system namespace is rebuilt by extracting the hierarchy relationship information from an extended attribute of the attribute data structures in each stub of each sub-file system to build a table. The top-file system hierarchy is built one level at a time starting with the root directory having a parent of NULL.

公开(公告)号：US09824233B2

公开(公告)日：2017-11-21

申请号：US14943948

申请日：2015-11-17

Applicant: International Business Machines Corporation

Inventor： Marc A. Kaplan ,  Wayne A. Sawdon

IPC: G06F21/00 ,  G06F21/62 ,  H04L9/32

CPC classification number: G06F21/6218 ,  G06F21/335 ,  H04L9/3213 ,  H04L9/3242 ,  H04L2209/20

Abstract: A method for secure portable operating system interface (POSIX) directory traversing for opening and accessing files by inode number. The method includes receiving, by a process executed by a processor, a request for a ticket for traversing a file system. The process generates a secure key for a unique handle object based on the request for the ticket. An authentication code is generated for the ticket using a numeric file identifier and the secure key. In response to reading a directory with POSIX x and r permissions according to directory permission bits or an access control list (ACL), the ticket is returned including ticket information including the numeric file identifier, generation information and the authentication code. In response to a request to open a directory, the ticket information is validated based on the secure key. A directory is opened for reading using the validated ticket information and the unique handle.

公开(公告)号：US09766988B2

公开(公告)日：2017-09-19

申请号：US15093822

申请日：2016-04-08

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Wayne A. Sawdon ,  Frank B. Schmuck

IPC: G06F7/00 ,  G06F17/00 ,  G06F11/14 ,  G06F17/30

CPC classification number: G06F11/1469 ,  G06F11/1448 ,  G06F11/1451 ,  G06F11/1456 ,  G06F17/30008 ,  G06F17/3015 ,  G06F17/30233 ,  G06F2201/815

Abstract: A technique for restoring file systems by applying full and incremental backups together while streaming them from multiple devices provides a faster system restore from a full backup where incremental backups must also be applied. A first storage device streams the full backup while at least one second storage device streams at least one incremental backup. As files are detected in the incremental backup, they are written instead of the corresponding file in the full backup. Incremental backups can be pre-merged to reduce their number to one less than a number of storage devices available to stream the backups, so that the full backup can be streamed along with the pre-merged incremental backup(s) to restore the file system.

公开(公告)号：US20170262461A1

公开(公告)日：2017-09-14

申请号：US15064305

申请日：2016-03-08

Applicant: International Business Machines Corporation

Inventor： Elli Androulaki ,  Robert Basham ,  Nikola Knezevic ,  Martin Petermann ,  Harold J. Roberson, II ,  Wayne A. Sawdon ,  Alessandro Sorniotti

IPC: G06F17/30

CPC classification number: G06F17/30106 ,  G06F17/30094 ,  G06F17/30587

Abstract: A key-value store for storing and retrieving user files based on key-value pairs, hereafter referred to as KVPs. For each user of the key-value store, each file of a set of files of said each user is stored as one or more pairs of KVPs. Each of said one or more pairs comprises a KVP of a first type and a KVP of a second type. The KVP of the first type comprises at least a part of contents of said each file, whereas the KVP of the second type comprises metadata (and possibly attributes) of said each file. Each KVP of the second type links to one or more KVPs of the first type. Further provided are related method and computer program products.

公开(公告)号：US20160246799A1

公开(公告)日：2016-08-25

申请号：US14627385

申请日：2015-02-20

Applicant: International Business Machines Corporation

Inventor： M. Corneliu Constantinescu ,  Marc A. Kaplan ,  Leo Luan ,  Sven Oehme ,  Wayne A. Sawdon ,  Frank B. Schmuck

IPC: G06F17/30

CPC classification number: G06F17/30156

Abstract: Embodiments relate to policy-based, multi-scheme data reduction for a computer memory. An aspect includes receiving a plurality of policy rules by a policy engine of the computer memory, wherein a first policy rule specifies applying a first data reduction scheme to data in the computer memory based on the data matching first characteristics, wherein a second policy rule specifies applying a second data reduction scheme to data in the computer memory based on the data matching second characteristics, wherein the first data reduction scheme is different from the second data reduction scheme. Another aspect includes determining, by the policy engine, that first data in the computer memory matches the first characteristics, and that second data in the computer memory matches the second characteristics. Yet another aspect includes applying the first data reduction scheme to the first data, and applying the second data reduction scheme to the second data.

Abstract translation: 实施例涉及用于计算机存储器的基于策略的多方案数据简化。 一方面包括由计算机存储器的策略引擎接收多个策略规则，其中第一策略规则指定基于匹配第一特征的数据将第一数据缩减方案应用于计算机存储器中的数据，其中第二策略规则指定 基于所述数据匹配第二特性对所述计算机存储器中的数据应用第二数据简化方案，其中所述第一数据简化方案与所述第二数据简化方案不同。 另一方面包括由策略引擎确定计算机存储器中的第一数据与第一特性匹配，并且计算机存储器中的第二数据与第二特性匹配。 另一方面包括将第一数据简化方案应用于第一数据，以及将第二数据简化方案应用于第二数据。

公开(公告)号：US20150379032A1

公开(公告)日：2015-12-31

申请号：US14316098

申请日：2014-06-26

Applicant: International Business Machines Corporation

Inventor： Marc A. Kaplan ,  Wayne A. Sawdon

IPC: G06F17/30

CPC classification number: G06F17/30097 ,  G06F9/465

Abstract: Embodiments relate to scheduling operations to perform on objects. A method for scheduling operations to perform on objects is provided. The method identifies a plurality of operations to perform on a plurality of objects each having at least one attribute. At least one of the operations has scheduling dependency on another operation. The method generates a numeric value for each of the objects from the attribute of the object. The method schedules the operations to perform on the objects based on the numeric values of the objects and the scheduling dependency.

Abstract translation: 实施例涉及对对象执行的调度操作。 提供了一种用于调度对对象进行操作的方法。 该方法识别在多个对象上执行的多个操作，每个对象具有至少一个属性。 至少有一个操作具有对另一个操作的调度依赖。 该方法根据对象的属性为每个对象生成一个数值。 该方法基于对象的数值和调度依赖性来调度对对象执行的操作。