公开(公告)号：US11868339B2

公开(公告)日：2024-01-09

申请号：US16946062

申请日：2020-06-04

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Rajkumar Kannan ,  Aruna Srinivasa Murthy

IPC: G06F16/23 ,  G06F16/182

CPC classification number: G06F16/2379 ,  G06F16/182

Abstract: Examples include a blockchain system associated with a distributed file system, Some examples include retrieval, from the blockchain system, a latest block corresponding to a block signature of a reference block that corresponds to a file stored in the distributed file system. The latest block includes information identifying at least one of a latest location of the file, a signature of metadata of the file, or a tag associated with the file.

公开(公告)号：US11734232B2

公开(公告)日：2023-08-22

申请号：US16509470

申请日：2019-07-11

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Priya Pappanaickenpalayam Muthuswamy ,  Rajkumar Kannan ,  Anoop Kumar Raveendran

IPC: G06F16/182 ,  G06F16/11 ,  G06F16/27

CPC classification number: G06F16/184 ,  G06F16/113 ,  G06F16/275

Abstract: Example implementations relate to identifying file system objects of a file system for generating an initial baseline of the file system. In an example, an inode table of the file system is retrieved. Modes included in the inode table correspond respectively to file system objects of the file system. Attributes, including an object identifier and a time attribute, are extracted from each of the inodes of the inode table. A compilation of the object identifiers from the extracted attributes are provided to a service that generates the initial baseline of the file system using the compilation.

公开(公告)号：US20180189301A1

公开(公告)日：2018-07-05

申请号：US15738111

申请日：2015-09-22

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Rajkumar Kannan ,  Ramesh Kannan Karuppusamy ,  Arun Vishnu Pathanipadath Karthikeyan

IPC: G06F17/30 ,  G06F21/62

CPC classification number: G06F16/125 ,  G06F16/113 ,  G06F16/116 ,  G06F16/181 ,  G06F21/6209

Abstract: Some examples described herein relate to managing appendable state of an immutable file. In an example, a request may be received to append an immutable file. A determination may be made whether the request is a first request to append immutable file. In response to determination that the request is the first request to append the immutable file, immutable file may be modified from an original state to an appendable state, wherein immutable file is appendable during the appendable state. A time period may be defined for immutable file to remain in the appendable state. A determination may be made whether immutable file is accessed during the time period. In response to determination that immutable file is not accessed during the time period, immutable file may be reverted from the appendable state to the original state upon expiration of the time period.

公开(公告)号：US20180137131A1

公开(公告)日：2018-05-17

申请号：US15577593

申请日：2015-06-03

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Ramesh Kannan Karuppusamy ,  Arun Vishnu Pathanipadath Karthikeyan ,  Rajkumar Kannan

IPC: G06F17/30

CPC classification number: G06F16/125 ,  G06F3/0605 ,  G06F3/0649 ,  G06F3/067 ,  G06F11/00 ,  G06F16/113 ,  G06F16/2365 ,  G06F21/604 ,  G06F21/64 ,  G06F2221/2137

Abstract: An example computing device includes a data storage device and a controller coupled to the data storage device. The data storage device includes a storage segment. The controller is to, in response to receiving a retention feature activation of the storage segment, compute a retention enabled time of the storage segment; in response to receiving a retention request associated with data in the storage segment, compute an absolute segment survival time based on the retention enabled time and compute a retention expiry time of the data based on the absolute segment survival time. The retention request is associated with a retention period. The controller is further to determine whether the retention period has lapsed based on the retention expiry time.

公开(公告)号：US20170220426A1

公开(公告)日：2017-08-03

申请号：US15305179

申请日：2014-10-07

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Arun Sankar ,  Jagadish Madhu ,  Ramesh Kannan K ,  Rajkumar Kannan

IPC: G06F11/14 ,  G06F11/10 ,  G06F17/30

CPC classification number: G06F11/1469 ,  G06F11/1004 ,  G06F11/1012 ,  G06F16/116 ,  G06F16/125 ,  G06F16/2365 ,  G06F2201/84

Abstract: To maintain files in a retained file system, a run-time error detection code (EDC) is generated for a retained file. The run-time EDC is generated on the basis of at least one of entire content and metadata of the retained file. Further, the run-time EDC is compared with a validation EDC associated with the retained file to identify a corruption of the retained file. The validation EDC is generated at an instance of placing the retained file in the retained FS. Furthermore, the validation EDC is based on at least one of entire content and metadata of the retained file. Based on the comparison, an original version of the retained file may is restored from a trusted backup system.

公开(公告)号：US20170052972A1

公开(公告)日：2017-02-23

申请号：US15307457

申请日：2014-07-22

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Ramesh Kannan Karuppusamy ,  Rajkumar Kannan

IPC: G06F17/30 ,  G06F11/10

CPC classification number: G06F16/152 ,  G06F11/1004 ,  G06F16/122 ,  G06F16/13 ,  G06F16/137

Abstract: Some examples describe a method for using location addressed storage as content addressed storage (CAS). A checksum of a file may be generated during transition of the file to a retained state. The generated checksum, which may represent a content address of the file, may be stored in a database. The database may be queried with the content address of the file to retrieve a location address of the file corresponding to the content address of the file. The location address of the file is used to provide access to the file in the file system.

Abstract translation: 一些例子描述了使用位置寻址存储作为内容寻址存储（CAS）的方法。 在将文件转换为保留状态期间，可能会生成文件的校验和。 生成的校验和可以表示文件的内容地址，可以存储在数据库中。 可以使用文件的内容地址查询数据库，以检索对应于文件的内容地址的文件的位置地址。 文件的位置地址用于提供对文件系统中文件的访问。