Method and system for using file systems for content management

• US 6,826,582 B1
• Filed: 09/28/2001
• Issued: 11/30/2004
• Est. Priority Date: 09/28/2001
• Status: Expired due to Term

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: EMC Corporation (Dell Technologies Inc.)
• Inventors: Clark, Roy, Ericsson, George, Chatterjee, Sanjoy
• Primary Examiner(s): Kindred, Alford
• Assistant Examiner(s): Wong, Leslie
• Application Number:
  US09/969,295
• Time in Patent Office: 1,159 Days
• Field of Search: 707/10, 707/102, 707/104.1, 707/205, 707/310, 707/203, 709/223, 709/209, 709/213, 711/209
• US Class Current: 1/1
• CPC Class Codes: G06F 16/10 File systems; File servers
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99956 File allocation

Abstract

A file system and method serves to create and manage content. The file system includes at least one directory having at least one file containing data, but about which at least one file has no information. A repository of metadata provides information about the data in the files. Phantom files are created which are designated by names and associated attributes, point to data in base files, without specifying a path name to the base files.

Claims

1. A file system for a network attached storage arrangement, for creating and managing content, comprising:

said file system being independent of an operating system residing on a computer;

a plurality of directories having base files containing data about which information is not known;

a repository of metadata separate from data in the base files, and containing identifying information about the data in the base files; and

phantom files comprising files containing collections of content segments in the form of pointers to segments within at least one of other files and phantom files, said phantom files designated by names and associated attributes without specifying a path name to the at least one of other files and phantom files, and said designations of names and associated attributes having been created by at least one user of the system.

2. The file system of claim 1, further comprising said phantom files identifying at least one segment of data in at least one base file, and information about the properties of said at least one segment of data.

3. The file system of claim 2, further comprising the phantom file having attributes of said segments of data identified.

4. The file system of claim 3, wherein said attributes comprise user restrictions limiting access to said segments of data to specified users.

5. The file system of claim 1, wherein said file system resides on at least one host on a network having storage units connected to the network, and wherein said storage units have on board intelligence to allow management of data in said phantom files.

6. The file system of claim 1, wherein at least one of said phantom files may contain no data, and is reserved for later use with data segments to be identified therein.

7. The file system of claim 1, wherein said identifying information comprises class, type, subtype, size and name.

8. The file system of claim 1, wherein data and information are named and defined with the following attributes:

class;

type;

size;

name;

name qualifiers;

name type;

date;

time; and

attribute qualification.

9. The file system of claim 8, wherein said attributes further comprise offset.

10. The file system of claim 1, further comprising means for locking base files or a phantom file from users when one user is operating on the base files or the phantom file.

11. The file system of claim 1, wherein said phantom files point to segments of data from base files, with said segments of data defined for use by users addressing the phantom files.

21. The file system of claim 1, wherein the phantom files are created by at least one of:

splitting an existing file along content boundaries;

combining contents of an existing file into a phantom file;

splitting or combining contents of phantom files;

defining a filter to work on content;

mirroring an existing file; and

versioning an existing file.

12. A method of managing content in an existing file system in a network attached storage arrangement, said file system being independent of an operating system running on a computer, and having a plurality of directories having base files containing data about which information is not known, the method comprising:

creating a repository of metadata separate from data in the base files, and containing identifying information about the data in the base files; and

creating phantom files comprising files containing collections of content segments in the form of pointers to segments within at least one base of other files and phantom files, and designating the phantom files with names and associated attributes without specifying a path name to the base files, with said designation of names and associated attributes being created by at least one user of the system.

13. The method of claim 12, wherein data from base files is identified in the phantom files, the data comprising the content are defined to have the attributes of:

class;

type;

size;

name;

name qualifiers;

name type;

date;

time; and

attribute qualification.

14. The method of claim 13, wherein said attributes further comprise offset.

15. The method of claim 13 further comprising creating a user interface to allow users to define contents in existing files manually.

16. The method of claim 15, further comprising:

manually defining contents in base files through the use of said interface;

checking for inconsistencies in the content; and

storing all the attributes of the existing content along with location of the content in a repository.

17. The method of claim 12, wherein said creation of phantom files is conducted by at least one of:

splitting an existing file along content boundaries;

combining contents of an existing file into a phantom file;

splitting or combining contents of phantom files;

defining a filter to work on content;

mirroring an existing file; and

versioning an existing file.

18. The method of claim 12, for comprising defining the attributes of class, type, subtype, size and name for each file created.

19. The method of claim 12 further comprising locking a base file or a phantom file from users when one user is operating on the base file or phantom file.

20. The method of claim 12, wherein the phantom files point to segments of data from base files, with said segments of data defined for use by users accessing the phantom files.