JPH08314780A - File management system - Google Patents

Abstract

PURPOSE: To improve the use efficiency to improve the operability by introducing the generation management to stored files in a hierarchical storage system and performing read/write of every component. CONSTITUTION: An access control means 7 which refers to a file management table 8 and a generation management table 9 to control the access to stored files, a tune data management means 10 which manages the storage destination of file data and executes read/write of data by the instruction of the access control means 7, a generation reference means 11 which selectively outputs a file of a specific generation, and a generation deletion means 12 which deletes a file of a specific generation perform the generation management of stored file to change the storage destination for every generation, thus improving the use efficiency. A component management table 6 is generated by a component register means 2, and reference, update, and deletion for every component are performed by a component reference means 3, a component change means 4, and a component deletion means 5, thus improving the operability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file management system, and more particularly to managing a plurality of storage devices having different transfer rates to handle a large amount of data, and to transfer infrequently accessed data with a slow transfer rate. The present invention relates to a file management method of a hierarchical storage system having a function of moving to a storage device.

[0002]

2. Description of the Related Art In a UNIX system, it is possible to handle a large amount of data, which is composed of a plurality of storage devices having different transfer rates, and the stored data is moved to the storage devices having different transfer rates according to the access frequency. A hierarchical storage system (hereinafter, referred to as an archiving system) having a function of making it used is used. In conventional archiving systems, data storage,
Since the unit of processing for reading and moving data is all files, and the generation management of files is not performed, it is not easy for users to use.

[0003]

As described above, according to the file management method of the conventional archiving system, the unit of processing for storing and reading is a file, and the generation management of the file is not performed. There was such a drawback. First, when storing and saving file data for each generation in the archiving system, it is necessary to give different file names for each generation even for the same file, which makes management complicated and makes it difficult to read files of a specific generation. Have a hard time. Furthermore, when reading all the files in a group (hereinafter referred to as a component) that is composed of a plurality of files that are closely related to each other, the reading process must be performed separately for each file.

A first object of the present invention is to introduce generation management into an archiving system, thereby making it possible to store and read generation-specific file data with the same file name, thereby improving system utilization efficiency and operability. It is to be. A second object of the present invention is to provide a file management system which realizes a storage / read function in units of components including a plurality of files and further has improved operability and is easy to use.

[0005]

A file management system according to a first aspect of the present invention comprises a plurality of storage devices having different transfer rates, stores a large amount of data, and moves infrequently accessed data to a storage device with a slow transfer rate. In the file management method of the hierarchical storage system, a file management table that stores management information such as access permission conditions and a generation management table that records the history of generation updates are stored for all files stored Access control means for controlling access to each of the files, and file data management means for managing the storage destination of each generation-controlled file data and reading and writing data in response to an instruction from the access control means. There is.

The file management system of claim 2 is the same as that of claim 1.
In the file management method described, the generation reference means for displaying the generation management table on the screen in response to the file access request for each generation and reading the file data of the selected generation number, and displaying the generation management table on the screen. The present invention is characterized by comprising a generation deleting means for deleting the record of the selected generation number and deleting the corresponding file data.

The file management system of claim 3 is the same as that of claim 1.
Alternatively, in the file management method according to claim 2, a component management table in which a component file name is registered in association with a component including a plurality of files and a component file name is registered, and each component file is stored in the access control unit. The component registration means for requesting, the component reference means for referring to the component management table from the component name and generation number, and requesting the access control means to read all the configuration files of the component, and the component management table A component updating unit that updates the contents and requests the access control unit to store, update, and delete the corresponding configuration file according to the updated contents, and deletes the component management table and all the components Remove Airu is characterized in that a component deleting means for making a request to the access control means.

[0008]

The file management system of the present invention manages file management in an archiving system composed of a plurality of storage devices having different transfer speeds, access control means for security management and generation management, and storage address management for access. Separated from the file data management means to be executed, the file data for each generation can be stored with the same file name, and the file data of the specified generation can be referred to, updated, and deleted. When the generation number is unknown, the generation reference table and the generation deletion means display the generation management table on the screen, and the corresponding file data can be easily specified in the menu selection format. Further, a plurality of files are collectively registered by the component registration means, and a plurality of files can be collectively referred, updated, and deleted in component units by the component reference means, the component update means, and the component deletion means.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

As shown in FIG. 1, the file management system of this embodiment is a file management system for a hierarchical storage device 1 composed of a plurality of storage devices having different transfer rates, and access permission conditions for all files. A file management table 8 storing file management information such as
An access control unit 7 which holds a generation management table 9 in which a history of generation updates is recorded and which shares the security management and generation management of files and the storage destination of each generation-managed file data, and the access control unit 7 File data management means 10 for reading and writing the file data in response to the instruction, and a generation for reading the file data of the selected generation number by displaying the generation management table 9 on the screen in response to the file access request for each generation. A reference unit 11 and a generation deletion unit 12 that deletes the selected generation number in the generation management table 9 and deletes the corresponding file data are provided, and are configured so that the generation management of files with the same file name can be performed. .

Further, a component registration table for creating a component management table 6 in which a component name and a configuration file name are registered for a component including a plurality of files and requesting the access control means 7 to store each configuration file. 2, the component management table 6 is referenced from the component name and generation number, and the content of the component management table 6 and the component reference means 3 that requests the access control means 7 to read all the configuration files of the component are updated. Then
The component update means 4 for requesting the access control means 7 to store, update, and delete the corresponding configuration file corresponding to the update contents, and the component management table 6.
And a component deleting unit 5 that requests the access control unit 7 to delete all the configuration files,
It is configured so that writing and reading can be performed in component units.

Next, the operation of this embodiment will be described.
First, as in the case of the conventional archiving system, the operation of performing normal storage, reference, update, and deletion in file units will be described. These processes are performed by the access control means 7 and the file data management means 10.

When a new storage request is issued, the access control means 7 creates a file management table 8 and a generation management table 9. As shown in FIG. 2, the file management table 8 is made up of data items such as owner and access mode for a file name. In the access mode, access permission conditions for the file are set, and security management is performed. Used. This access mode can be updated only by the owner. As shown in FIG. 3, the generation management table 9 is composed of data items necessary for generation management of a file with respect to a file name. In the case of new storage, the first record (generation number “1.0” Record) is created, but a record is added each time it is updated. When the creation of the file management table 8 and the generation management table 9 is completed, the access control means 7 passes the “file name + generation number” to the file data management means 10 together with the file data, and instructs storage in the hierarchical storage device 1. To do.

The file data management means 10 manages the data storage destination of each generation-managed file using "file name + generation number" as a key, and executes reading / writing of file data to / from the hierarchical storage device 1. In the case of new storage, an empty area of the storage device of the hierarchical storage device 1 having a high transfer speed is searched for, the file data is stored, and the address is associated with the given “file name + generation number”. It is stored in a management table or the like (not shown). The file data management means 10 has a data transfer function as an archiving system, and uses a method (automatic or automatic) prescribed for a storage device of a hierarchy having a low transfer rate for data of low access frequency in units of “file name + generation number”. The transfer is performed manually), and a certain free area is secured in the storage device of the hierarchy having a high transfer speed.

In the case of a stored file reference request in which a file name is specified, the access control means 7 searches the file management table 8 of the specified file name and refers to the access mode to confirm whether or not there is an access right. If the access right is confirmed, the generation management table 9 is referred to after updating the last access date. When only the file name is designated, the latest generation number is acquired from the generation management table 9, and this is passed to the file data management means 10 together with the file name to instruct reading of the corresponding file data. When the generation number is specified together with the file name, the generation management table 9 is referenced to confirm the existence of the generation number, and then the file data management means 10 is instructed to read the corresponding file data.

In the case of an update request for a stored file, the access control means 7 searches the file management table 8 to confirm whether there is an access right and gives an instruction to read the file data of the latest generation number. When the read file data is updated and storage of updated data is requested, the access control means 7 updates the last modification date of the file management table 8 and after adding a record of a new generation number to the generation management table 9. The new generation number is used to instruct the file data management means 10 to newly store the updated file data. When adding a record to the generation management table 9, it is advisable to adopt a method of displaying data items of the generation management table 9 on the screen as input items so that the user can easily input necessary information. If the generation number is specified along with the file name during the update request, the file data of the specified generation number is read,
After the update, the new generation number is newly registered, but if the designated generation number is not the latest (a special example that does not generally occur), the last modification date of the file management table 8 is not updated.

When a request for deleting a stored file is received, the access control means 7 searches the file management table 8 to confirm whether or not there is an access right, and then the generation management table 9
The file data management means 10 is instructed to delete the file data of all generation numbers stored in the hierarchical storage device 1 with reference to. Upon receiving the completion report of all deletions from the file data management means 10, the access control means 7 deletes the file management table 8 and the generation management table 9. In the case of a deletion request specifying a generation number together with a file name, only the file data of the specified generation number is deleted, and the record of the corresponding generation number in the generation management table 9 is deleted.

As described above, with respect to the management of files stored in the hierarchical storage device 1 composed of a plurality of storage devices having different transfer rates, access control means is used by using the file management table 8 and the generation management table 9. 7 manages security management and generation management, and the file data management means 10 manages storage addresses in units of generation-managed generation-specific files and shares execution of access. As a result, a plurality of generations of file data can be stored with the same file name, and if the generation number is specified together with the file name, it is possible to easily refer to and delete file data of any generation, thus improving operability. . Moreover, since file data can be moved between tiers in the hierarchical storage device 1 in units of generational files, old generation file data of the same file can be stored in a storage device with a slow transfer speed, and the hierarchical storage device can be stored. The utilization efficiency of 1 can be improved.

Generation reference means 11 and generation deletion means 12
Is provided in order to further improve the operability of the management function in file units by the access control means 7 and the file data management means 10 described above. That is, it is effectively used when the generation number is unknown or uncertain when referring to or deleting file data of a specific generation of a certain file. The generation reference means 11 and the generation deletion means 12 are
When the file name is received, the generation management table 9 is displayed on the screen via the access control means 7 and the generation number is designated by the keyboard or mouse operation. The user can easily recognize or confirm the corresponding generation number by referring to the created date and time and the tag information displayed.
Error-free processing is possible. The generation reference unit 11 and the generation deletion unit 12 request the access control unit 7 to execute the reference and deletion of the file data of the generation number selected and designated on the screen. The generation reference unit 11 may have not only a reference function but also an update function.

Next, a function of registering a plurality of closely related files as a component collectively and storing, referring to, updating, and deleting the plurality of files in the hierarchical storage device 1 in component units will be described.

A component registration request is made to the component registration means 2 by inputting a component name, a configuration file name and the like. Component registration means 2
Creates a component management table 6 in which a component name and a configuration file name are described for the requested component, and then requests the access control means 7 to store each configuration file in the hierarchical storage device 1. .

As shown in FIG. 4, the component management table 6 has a name column 61 for storing component names.
, A configuration file name column 62 for storing the names of files constituting the component, and a plurality of generation number columns 63, 64, ... For recording the history as a component. The generation number column is added every time the component is updated, and the generation number is also updated. In the configuration file name column 62, the file names of the files configuring the component of the latest generation number are recorded. When registering a component, a generation number column is created with the generation number “1.0”, all of the configuration files are recorded as the added file name together with the generation number of the file, and only the file name is duplicated in the configuration file name column 62. Will be recorded. When the component is updated, as shown in the generation number column 64, the file name of the updated, added, and deleted file and the generation number are recorded as difference information, and the file name of the additional file is added to the configuration file name column 62. The file name of the deleted file is deleted from the configuration file name field 62.

Upon receiving the request from the component registration means 2, the access control means 7 creates a file management table 8 and a generation management table 9 for each constituent file, and then sends "file name + Generation number "is notified and execution of file data storage is instructed. The file data management means 10 corresponds to the notified “file name + generation number” and newly stores the file data in the empty area in the storage device that constitutes the hierarchical storage device 1 and has a high transfer rate.

Next, a case of reading a component for collectively reading a plurality of files registered as components will be described. Batch reading (reference) of files constituting a component is performed by the component reference unit 3 by designating a component name. The component reference unit 3 refers to the component management table 6 of the designated component name, acquires the file name from the configuration file name column 62, passes the acquired file name to the access control unit 7, and issues a read request.
The access control means 7, which has received the read request by the file name, confirms the access right by referring to the file management table 8, acquires the latest generation number from the generation management table 9, and the file data management means 1 together with the file name.
Passing 0 to instruct to read the file data. As a result, the file data of the latest generation number of each file that constitutes the latest generation component is read.

When a request is made that specifies not only the component name but also the generation number, the component reference means 3 refers to the generation number column before the specified generation number in the component management table 6 to find the corresponding generation number. The file name and the generation number of the component file of the component are acquired, and "file name + generation number" is passed to the access control means 7 to request reading. As a result, the configuration files of the old-generation components can be collectively referenced. However, although the file name of the already deleted file is known, the file data cannot be referenced.

Updates of registered components (updates and deletions of configuration files and addition of new configuration files) are processed by the component update means 4. When the component is updated, a new generation number is given to the component. The component updating means 4 writes the difference information (file name to be added / updated / deleted and its generation number) together with the creation date and the comment to the component management table 6 based on the new generation number, and applies it to the access control means 7. Request file processing (add / update / delete). Upon receipt of the processing end notification from the access control means 7, the file name is added to or deleted from the component file name column 62 of the component management table 6, and the component update processing is ended.

When deleting a registered component from the hierarchical storage device 1, the component name is designated and the component deleting means 5 performs the deletion. The component deleting unit 5 searches the component management table 6 having the specified component name, and requests the access control unit 7 to delete each component file. The access control means 7 refers to the file management table 8 of each requested file, confirms the validity of the request, and then deletes the file data of all generation numbers recorded in the generation management table 9 by the file data management means. Give 10 instructions. When the deletion of all the file data designated by the file data management means 10 is completed, the access control means 7 deletes the file management table 8 and the generation management table 9 according to the report, and the component deletion means 5 deletes the component management table 6. Then, the process of deleting all the information related to the specified component is completed.

The embodiment of the present invention having the configuration of FIG. 1 has been described above in detail. The first object of the present invention is to provide an access control means 7 for holding a file management table 8 and a generation management table 9. This is achieved by the file data management means 10, and the operability is further improved by the addition of the generation reference means 11 and the generation deletion means 12. Further, the addition of the component registration means 2, the component reference means 3, the component update means 4, and the component deletion means 5 achieves the second object and further improves the operability.

[0030]

As is apparent from the above description, in the file management method of the present invention, generation management is introduced into the storage files of the hierarchical storage system, so that file data for each generation can be registered and read with the same file name. This makes it possible to improve the operability and improve the utilization efficiency of the system because the file data can be moved between layers by generation. Also, by registering a component including a plurality of files in the component management table, it is possible to perform batch registration and reading of a plurality of files in component units, which has the effect of further improving operability.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a data structure of a file management table in FIG.

FIG. 3 is an explanatory diagram showing a data configuration of a generation management table in FIG.

FIG. 4 is an explanatory diagram showing a data structure of a component management table in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hierarchical storage device 2 Component registration means 3 Component reference means 4 Component update means 5 Component deletion means 6 Component management table 7 Access control means 8 File management table 9 Generation management table 10 File data management means 11 Generation reference means 12 Generation deletion means

Claims (3)

[Claims] 1. A file management method of a hierarchical storage system, comprising a plurality of storage devices having different transfer rates, storing a large amount of data, and moving infrequently accessed data to a storage device having a slow transfer rate. An access control unit that holds a file management table that stores management information such as access permission conditions for all files and a generation management table that records the history of generation updates, and controls access to file data. And a file data management unit that manages the storage destination of each file data and that reads and writes data in response to an instruction from the access control unit. 2. A generation reference unit for displaying the generation management table on a screen in response to a file access request for each generation and reading file data of a selected generation number,
2. The file management method according to claim 1, further comprising: a generation deleting unit that displays the generation management table on a screen and deletes a record of a selected generation number to delete corresponding file data. 3. A component registration means for creating a component management table in which a component file name is registered for a component including a plurality of files in association with the component name and requesting the access control means to store each component file. , A component reference unit that refers to the component management table from the component name and generation number, and requests the access control unit to read all the configuration files of the component, and updates and updates the contents of the component management table. A component updating unit that requests the access control unit to store, update, and delete the corresponding configuration file according to the content, and the component management table is deleted, and the deletion of all the configuration files is controlled by the access control 3. The file management system according to claim 1, further comprising a component deleting unit that requests the unit.