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EP0476841A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Storage management across file systems

Assignee: International Business Machines Corp
•
Filing: 1991-08-20
•
Granted: —
•
Expires: 2011-08-20
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Abstract

Abstract The use of a first file system to assist in the storage management of a second file system having no remaining space to accommodate the storage of both management classes and management attributes is disclosed. A repository file space in one file system is used to accommodate the storage of some or all of the management classes or attributes for the files of the second file system. For each file in the second file system an empty file is created in the repository file space of the first file system. The creation of an empty file in the repository file space causes the management class to be selected for the file and stored in the catalogue of the first file system as would be done for any file in the first file system. A naming convention is used to link each file in the repository file space with its associated file in the second file system. The additional files in the first file system are left empty as no other information need be stored for storage management purposes. The manage-ment attributes of the files are then compared to the management criteria represented by the management classes stored in the catalogue of the first file system and the files are managed accordingly.

Inventors

  • 👤 Gregory John Tevis
  • 👤 Ellen Jean Waldo

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 14:20
CPC Classifications
G; G06; G06F; G06F16/00; G06F16/10; Y; Y10; Y10S; Y10S707/00; Y10S707/99951; Y10S707/99952; Y10S707/99953; Y10S707/99955

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 119 words
A data processing system including a host processor and a plurality of peripheral data storage arranged in a data storage hierarchy comprising : level 0 storage (14) including a first storage space thereon organized according to a first file system and a second storage space thereon organized according to a second file system, the first storage space including a catalogue of first management information for storage management of the files on the second storage space; level 1 storage (15); a host processor (10) coupled to the level 0 and 1 storage; and management means (24) coupled to the host processor for instructing the host processor to manage the files on the second storage space using the first management information.
Claim 2
Dependent Claim 28 words
A system as claimed in claim 1 wherein the second storage space includes a catalogue which has no available storage space for storage of the first management information.
Claim 3
Dependent Claim 34 words
A system as claimed in claim 1 or claim 2 wherein the first storage space includes a repository file space (27) having an empty file therein for each file on the second storage space.
Claim 4
Independent Claim 58 words
A system as claimed in any preceding claim wherein the first storage space includes a catalogue of second management information for storage management of the files on the first storage space and management means coupled to the host processor for instructing the host processor to manage the files on the first storage space using the second management information.
Claim 5
Independent Claim 28 words
A system as claimed in any preceding claim wherein the first file system is a shared file system and the second file system is a preallocated file system.
Claim 6
Independent Claim 123 words
A method for the storage management of data in a data storage hierarchy, the data storage hierarchy including level 0 storage having a first storage space thereon organized according to a first file system and a second storage space thereon organized according to a second file system, level 1 storage, and a host processor coupled to the level 0 and level 1 storage, the method comprising the steps of: creating an empty file in the first storage space for each file on the second storage space; assigning a management class to each file on the second storage space and storing such in a catalogue on the first storage space; and managing each file on the second storage space according to its management class.
Claim 7
Dependent Claim 49 words
A method as claimed in claim 6 further comprising the steps of: assigning a management class to each file on the first storage space and storing such in a catalogue in the first storage space; and managing each file on the first storage space according to its management class.

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