Version management system, version management server device, and storage device control unit

• US 20050187989A1
• Filed: 05/28/2004
• Published: 08/25/2005
• Est. Priority Date: 02/19/2004
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kaneko, Seiji
• Application Number:
  US10/857,772
• Publication Number:
  US 20050187989A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/10 File systems; File servers

Abstract

A version management system that includes: a CPU; memory; communications interface section connected to an information processor over a communications network for communications therewith; a repository database for storing a file including version information; a check-out processing section for checking out the file from the repository database in response to the check-out request received from the information processor; a data writing request receiving section for receiving from the information processor a data writing request including information for identifying the file; a file writing processing section for performing data writing to the checked out file in response to the data writing request; a check-in processing section for checking in the file to the repository database in response to the check-in request received from the information processor; and a backup processing section for performing backup of the file stored in the repository database responding to completion of check-in by the check-in processing section.

Claims

1. A version management system comprising:

a CPU;

a communications interface section coupled to communicate with an information processor;

a repository database configured to store a file, including version information;

a check-out processing section configured to receive a check-out request from the information processor to check-out the file from the repository database;

a data writing request section configured to receive from the information processor a data writing request which includes information for identifying the file;

a file writing section configured to write data to the checked out file in response to the data writing request;

a check-in processing section configured to receive a check-in request from the information processor to check-in the checked out file; and

a backup processing section configured to perform backup of the file stored in the repository database in response to completion of the check-in by the check-in processing section, wherein

the check-out processing section, the data writing request receiving section, the file writing processing section, the check-in processing section, and the backup processing section are implemented by the CPU executing a stored program.

2. The version management system according to claim 1 wherein the data writing request is provided from the information processor in accordance with a WebDAV protocol.

3. The version management system according to claim 1 further comprising:

first and second logical volumes each serving as a storage region logically defined on a storage region provided by a storage device;

wherein

the repository database is stored in the first logical volume; and

the backup processing section performs the backup by writing, into the second logical volume, a copy of data stored in the first logical volume.

4. The version management system according to claim 1 further comprising

first and second storage devices, wherein:

the repository database is stored in a storage region provided by the first storage device, and

the backup is performed by writing into a storage region provided by the second storage device, a copy of data stored in the storage region provided by the first storage device.

5. The version management system according to claim 1 wherein:

the repository database stores the file together with identification information for identifying a group of files;

in response to the check-out request, the check-out processing section checks out from the repository database the file having the same identification information; and

the backup is performed after the file is checked in.

6. A version management server device comprising:

a CPU;

a communications interface connected to communicate with an information processor;

a storage interface connected to communicate with a storage device control unit including a repository database configured to store a file including version information;

a check-out processor configured to receive a check-out request from the information processor for checking out the file from the repository database;

a data writing request receiver configured to receive from the information processor a data writing request including file identification information;

a file writing processor configured to write data to the file read out from the repository database in response to the data writing request;

a check-in processor configured to receive a check-in request from the information processor for checking in the checked out file to the repository database, and in response to the received check-in request, for checking in the checked out file to the repository database; and

a backup processor configured to perform backup of the file stored in the repository database in response to completion of the check-in by the check-in processor, wherein

the check-out processor, the data writing requestor, the file writing processor, the check-in processor, and the backup processor are realized by the CPU executing a stored program.

8. The version management server device according to claim 6 wherein the data writing request is provided from the information processor in accordance with a WebDAV protocol.

9. The version management server device according to claim 6 further comprising:

first and second logical volumes each serving as a storage region logically defined on a storage region provided by a storage device;

wherein

the repository database is stored in the first logical volume; and

the backup processing section performs the backup by writing, into the second logical volume, a copy of data stored in the first logical volume.

10. The version management server device according to claim 6 further comprising

first and second storage devices, wherein:

the repository database is stored in a storage region provided by the first storage device, and

the backup is performed by writing into a storage region provided by the second storage device, a copy of data stored in the storage region provided by the first storage device.

11. The version management server device according to claim 6 wherein:

the repository database stores the file together with identification information for identifying a group of files;

in response to the check-out request, the check-out processing section checks out from the repository database the file having the same identification information; and

the backup is performed after the file is checked in.

7. A storage device control unit comprising:

a CPU;

a communications interface connected to an information processor;

a disk interface configured to exercise control over data operations with a storage device;

a cache memory configured to store data passing between the communications interface and the disk interface;

a repository database configured to store a file, including version information;

a check-out processor configured to receive a check-out request from the information processor to read out the file from the repository database;

a data writing request receiver configured to receive from the information processor a data writing request including file identification information;

a file writing processor configured to perform data writing to the checked out file in response to the data writing request;

a check-in processor configured to receive a check-in request from the information processor to cause check-in of the checked out file to the repository database; and

a backup processor configured to perform backup of the file stored in the repository database in response to completion of the check-in by the check-in processor, wherein

the check-out processor, the data writing request receiver, the file writing processor, the check-in processor and the backup processor are implemented by the CPU executing a stored program.

12. The storage device control unit according to claim 7 wherein the data writing request is provided from the information processor in accordance with a WebDAV protocol.

13. The storage device control unit according to claim 7 further comprising:

first and second logical volumes each serving as a storage region logically defined on a storage region provided by a storage device;

wherein

the repository database is stored in the first logical volume; and

the backup processing section performs the backup by writing, into the second logical volume, a copy of data stored in the first logical volume.

14. The storage device control unit according to claim 7 further comprising

first and second storage devices, wherein:

the repository database is stored in a storage region provided by the first storage device, and

the backup is performed by writing into a storage region provided by the second storage device, a copy of data stored in the storage region provided by the first storage device.

15. The storage device control unit according to claim 7 wherein:

the repository database stores the file together with identification information for identifying a group of files;

in response to the check-out request, the check-out processing section checks out from the repository database the file having the same identification information; and

the backup is performed after the file is checked in.