File distribution and access mechanism for file management and method thereof

• US 20070150481A1
• Filed: 04/12/2006
• Published: 06/28/2007
• Est. Priority Date: 12/27/2005
• Status: Abandoned Application

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Song, Chen-Hwa, Lin, Chih-Yin
• Application Number:
  US11/403,432
• Publication Number:
  US 20070150481A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/137 Hash-based content-based indexing of textual data G06F16/31

Abstract

A file access and management mechanism over Internet, and a method for distributing a file in arbitrary storage spaces and maintaining file security in the storage spaces are introduced herein. In addition, a method for maintaining file availability in the aforementioned storage spaces, a conversion manner between a network address and a virtual storage space address, and an addressing manner for determining addresses for placing file fragments are also introduced. The above storing manner also considers parameters at least including truth, availability, and size for choosing the storage space. And the present invention further provides a method for retrieving and deleting file fragments.

Claims

1. A file access and management mechanism, comprising:

a distributed virtual file system, wherein an application and an operation system access a original file through the distributed virtual file system; and

multiple storage spaces, wherein when the application stores the original file through the distributed virtual file system, the original file is converted to multiple sliced file blocks after being processed by an encryption process and an slicing process, and each of the sliced file blocks is assigned with a corresponding parameter value, and the sliced file blocks are stored in the storage spaces in a predetermined sequence after determining the state of the storage spaces, and storage information corresponding to the sliced file blocks are stored in the distributed virtual file system.

2. The file management mechanism as claimed in claim 1, wherein assigning each of the sliced file blocks with a corresponding parameter value refers to arranging the sliced file blocks for giving each sliced file block a sequence number in sequence.

3. The file access and management mechanism as claimed in claim 1, wherein determining the state of the storage spaces comprises confirming whether the storage space is enough for storing the sliced file block.

4. The file access and management mechanism as claimed in claim 1, wherein determining the state of the storage spaces comprises confirming a network and system availability level of the storage space.

5. The file access and management mechanism as claimed in claim 1, wherein determining the state of the storage spaces comprises confirming the truth level of the storage space for a user.

6. The file access and management mechanism as claimed in claim 1, wherein determining the state of the storage spaces comprises confirming the number of units of vacant space of the storage space.

7. The file management mechanism as claimed in claim 1, wherein the storage spaces comprise storage spaces available on the Internet.

8. The file management mechanism as claimed in claim 7, wherein the storage spaces comprise storage spaces of large-capacity email boxes provided by a web mail service on the Internet.

9. The file management mechanism as claimed in claim 7, wherein the storage spaces comprise storage spaces of network disks on the Internet.

10. The file access and management mechanism as claimed in claim 1, wherein if it is under a priority mode, determining the state of the storage spaces comprises confirming the following states:

whether the storage space is enough for storing the sliced file block or not, and the network and system availability level of the storage space,

the network and system availability level of the storage space being larger than the frequency level of using the original file, and a truth level of the storage space for a user being larger than the weightiness parameter of the original file.

11. The file access and management mechanism as claimed in claim 1, further comprising:

when the application wants to retrieve the original file through the distributed virtual file system, retrieving the sliced file blocks from the storage spaces according to the storage information corresponding to the sliced file blocks stored in the distributed virtual file system, and reverting them to the original file through an reversion process of the encryption process and the slicing process.

12. The file access and management mechanism as claimed in claim 1, further comprising:

when the application wants to delete the original file through the distributed virtual file system, checking the sliced file blocks for the storage spaces according to the storage information corresponding to the sliced file blocks stored in the distributed virtual file system, and directly deleting the stored sliced file blocks.

13. A method for accessing and managing files, comprising:

encrypting a original file, to obtain an encrypted file;

slicing the encrypted file into multiple file blocks;

arranging the file blocks and assigning each file block with a corresponding sequence number;

calculating the locations for placing the file blocks after checking the state of the storage spaces, and placing the file blocks at multiple network storage spaces having available spaces and the number of units of vacant space larger than 0; and

modifying a storage information corresponding to the original file.

14. The file access and management method as claimed in claim 13, wherein when the original file is to be retrieved, the sliced file blocks are retrieved from the network storage spaces according to the storage information of the original file, and reverted into the original file through a reversion process of the encryption process and the slicing process.

15. The file access and management method as claimed in claim 13, further comprising:

when the original file is to be deleted, checking the sliced file blocks for the network storage spaces according to the storage information, and directly deleting the stored sliced file blocks.

16. A method for accessing and managing files, comprising:

encrypting a original file, to obtain an encrypted file;

slicing the encrypted file into multiple file blocks;

arranging the file blocks and assigning each file block with a corresponding sequence number;

calculating the locations for placing the file blocks after checking the state of multiple storage spaces, wherein checking the state of the storage spaces comprises confirming whether the storage space is enough for storing the sliced file block, the network and system availability level of the storage space, the network and system availability level of the storage space being larger than the frequency level of using the original file, and the truth level of the storage space for a user being larger than the weightiness parameter of the original file;

placing the file blocks at the network storage spaces; and

modifying a storage information corresponding to the original file.

17. The file access and management method as claimed in claim 16, wherein when the original file is to be retrieved, the sliced file blocks are retrieved from the network storage spaces according to the storage information of the original file, and reverted to the original file through the reversion process of the encryption process and the slicing process.

18. The file access and management method as claimed in claim 16, further comprising:

when the original file is to be deleted, checking the sliced file blocks for the network storage spaces according to the storage information, and directly deleting the stored sliced file blocks.