公开(公告)号：US10778246B2

公开(公告)日：2020-09-15

申请号：US16667758

申请日：2019-10-29

Applicant: International Business Machines Corporation

Inventor： M Corneliu Constantinescu ,  Gero Friedrich Wolf Schmidt ,  Wayne A. Sawdon

IPC: H03M7/30 ,  G16B30/10 ,  G06F16/11

Abstract: A computer-implemented method according to one embodiment includes dividing data into a plurality of partitions, creating a plurality of groups of different data types within each of the plurality of partitions, independently compressing, within each of the plurality of partitions, each of the plurality of groups of different data types to create a plurality of independently compressed partitions, and validating each of the plurality of independently compressed partitions to create a plurality of validated independently compressed partitions.

公开(公告)号：US10649955B2

公开(公告)日：2020-05-12

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: G06F16/13 ,  G06F16/188 ,  G06F16/17

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：US10235374B2

公开(公告)日：2019-03-19

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

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：US20180373745A1

公开(公告)日：2018-12-27

申请号：US15633599

申请日：2017-06-26

Applicant: International Business Machines Corporation

Inventor： Deepavali M. Bhagwat ,  Nilesh P. Bhosale ,  Joseph W. Dain ,  James Hewitt ,  Wayne A. Sawdon

IPC: G06F17/30

Abstract: In one embodiment, a method includes receiving, at a centralized index operating in a cloud environment via a messaging bus, first events spawned by a first processor managing an object store accessible via the cloud environment. The method also includes receiving, at the centralized index, second events spawned by a second processor managing an archival store accessible via the cloud environment. Also, the method includes normalizing metadata in the first and second events. Moreover, the method includes indexing and storing the metadata in the centralized index. The object store and the archival store operate in different object subsystems of the cloud environment. Other systems, methods, and computer program products are described for managing import, export, and copy of data within a public tiered object storage environment in accordance with more embodiments.

公开(公告)号：US10049121B2

公开(公告)日：2018-08-14

申请号：US14672936

申请日：2015-03-30

Applicant: International Business Machines Corporation

Inventor： Stefan Bender ,  Nils Haustein ,  Dominic Mueller-Wicke ,  Wayne A. Sawdon ,  James P. Smith

IPC: G06F17/30 ,  G06F11/14

Abstract: In an approach to backup and restore one or more clone file trees, one or more processors generate a clone management table. One or more processors record a clone management information in the clone management table about each clone file. To backup a clone file, one or more processors update the clone management information, and store one or more data blocks that are in the clone file trees. To restore a clone file, one or more processors analyze a clone management information and restore one or more data blocks in the clone file. To restore a clone file parent, one or more processors analyze a clone management information and restore one or more data blocks in the clone file parent. To restore a clone file tree, one or more processors analyze a clone management information and restore one or more data blocks in the clone file tree.

公开(公告)号：US20170177602A1

公开(公告)日：2017-06-22

申请号：US14970636

申请日：2015-12-16

Applicant: International Business Machines Corporation

Inventor： M. Corneliu Constantinescu ,  Leo Shyh-Wei Luan ,  Wayne A. Sawdon ,  Frank B. Schmuck

IPC: G06F17/30 ,  H03M7/30

CPC classification number: H03M7/3077

Abstract: The embodiments described herein relate to managing compressed data to optimize file compression. A compression is performed on a first set of data to create a first set of compressed data partitions in a compression group. A partition table is constructed, and partition entries for the first data block are added to the table in conjunction with the first set. A current size of the compression group is assessed. In response to a compression ratio being greater than a target compression ratio and internal fragmentation of the compression group being smaller than a threshold, the compression group is dynamically completed. The dynamic completion decides a size for the compression group. The partition table is added to the compression group by assigning space within the first compression group for the table. The compression group is written to persistent storage.

公开(公告)号：US20130086135A1

公开(公告)日：2013-04-04

申请号：US13685593

申请日：2012-11-26

Applicant: International Business Machines Corporation

Inventor： Marc A. Kaplan ,  Wayne A. Sawdon

IPC: G06F17/30

CPC classification number: G06F17/3007 ,  G06F17/30129 ,  G06F17/30165

Abstract: Managing a shared file system comprising a directory and files stored on a multiple storage devices shared by plural processing nodes, is provided. A plurality of parallel directory traversal records are partitioned into a plurality of ranges to allow for the records in each range to be written independently in parallel by plural processing nodes during parallel directory traversal. Parallel operations are performed comprising parallel directory traversal of all directory paths and files in the shared file system.

Abstract translation: 提供了一种共享文件系统，包括目录和存储在多个处理节点共享的多个存储设备上的文件。 多个并行目录遍历记录被分割成多个范围，以允许在并行目录遍历期间由多个处理节点独立地并行写入每个范围中的记录。 执行并行操作，包括并行目录遍历共享文件系统中的所有目录路径和文件。

公开(公告)号：US11113245B2

公开(公告)日：2021-09-07

申请号：US16047322

申请日：2018-07-27

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

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

IPC: G06F16/17 ,  G06F16/174

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.

公开(公告)号：US10915498B2

公开(公告)日：2021-02-09

申请号：US15475012

申请日：2017-03-30

Applicant: International Business Machines Corporation

Inventor： Deepavali M. Bhagwat ,  Marc A. Kaplan ,  Sven Oehme ,  Wayne A. Sawdon

IPC: G06F16/11 ,  G06F16/13

Abstract: A computer-implemented method according to one embodiment includes identifying an event associated with a high speed storage tier of a data storage system, determining a policy rule that is triggered in response to the event, and implementing one or more data management actions associated with the high speed storage tier according to the policy rule.

公开(公告)号：US10803018B2

公开(公告)日：2020-10-13

申请号：US14970592

申请日：2015-12-16

Applicant: International Business Machines Corporation

Inventor： M. Corneliu Constantinescu ,  Leo Shyh-Wei Luan ,  Wayne A. Sawdon ,  Frank B. Schmuck

IPC: G06F16/174

Abstract: The embodiments described herein relate to managing compressed data to optimize file compression. A first compression is performed on a first set of data to create first compressed data. The first compressed data is stored in one or more blocks of a first compression group. A size of free space of a last block of the first compression group is discovered and calculated. A second compression is performed on a second set of data to create second compressed data. At least a portion of the second compressed data is supplied to the first compression group for padding into the last block in response to determining that the size of the free space is sufficient. An unpadded portion of the second compressed data is stored in one or more blocks of a second compression group.