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Method for divisionally managing files on a user basis, and a storage system thereof

A technology for storage system and user management, which is applied in the field of file system and can solve problems such as difficult file access

Active Publication Date: 2014-06-25
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

LTFS has difficulty managing access to files on tape on a user-by-user basis

Method used

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  • Method for divisionally managing files on a user basis, and a storage system thereof
  • Method for divisionally managing files on a user basis, and a storage system thereof
  • Method for divisionally managing files on a user basis, and a storage system thereof

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Embodiment Construction

[0056] An embodiment of the invention (practical example) will be described with respect to how multiple users save files in a tape library and save content in two partitions of a tape. In a practical example, management of index partitions based on "user" distinction will be mainly described.

[0057] LTFS, which is a state-of-the-art file system for tape drives, is configured to manage files by allocating, as an index, attribute information on a plurality of files of a user to one tape . According to the present invention, a mechanism for managing one user with one index is introduced into the file system. File attributes for multiple users are differentiated and contained in an index partition of one tape media. Save the data of the file in the data partition. The essence of the technology is that one medium holds multiple file system instances. According to the invention, by assigning an index to each user, the file system appears to allow each user to exclusively occu...

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PUM

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Abstract

The invention provides a method for a plurality of users to write at least one file to a medium in such a manner that the file is divisionally managed in a system environment in which an input / output control is performed on a storage system includes saving, in the medium as metadata, a user identifier (ID) for identifying a user and file attribute information about the file managed by a user associated with the user ID, and writing, as data, the file managed by the user to the medium as indicated by the file attribute information. In other embodiments, a writing program product, a reading program product, and a system are presented that allow a plurality of users to write at least one file to a medium in such a manner that the file is divisionally managed in a system environment.

Description

technical field [0001] The present invention relates to a method for separately managing files in a medium based on users in a file system that handles data in the medium as files. Specifically, the present invention relates to a method of separately managing metadata held in a medium managed by a file system, a program thereof, and a storage system thereof on a user basis. Background technique [0002] A file system is intended to control reading from and writing to a tape cartridge (media) mounted in a tape storage device (tape drive). Linear Tape File System (LTFS) is a file system for tape drives that use tape media as removable media. [0003] LTFS is the file system responsible for the control of the tape library. With LTFS, applications do not have to be aware of the library, and tape devices can be used more easily than traditionally. Use cases where tape devices are used as storage in cloud systems are possible due to the inherently high capacity and low cost of ...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F3/0644G06F3/0686G06F3/0605G06F3/0611G06F3/0643G06F3/0682G06F16/1774G06F16/13G06F16/18G06F3/0622
Inventor 渡边辉江长谷川彻板垣浩三间慎介芦田贵
Owner IBM CORP
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