Method, system and program for archiving files

• US 7,765,177 B2
• Filed: 08/18/2006
• Issued: 07/27/2010
• Est. Priority Date: 10/07/2003
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: International Business Machines Corporation
• Inventors: Stakutis, Christopher John, Haselton, William Robert, Stuart, Alan L., Marek, Toby Lyn, Stearns, Kevin Michael
• Primary Examiner(s): Ali; Mohammad
• Assistant Examiner(s): LAWSON, DONALD L
• Application Number:
  US11/465,594
• Publication Number:
  US 20060282484A1
• Time in Patent Office: 1,439 Days
• Field of Search: 707/204, 707/200, 707/1, 707/203, 713/193
• US Class Current: 1/1
• CPC Class Codes: G06F 16/113 Details of archiving lifecycle management in storage systems G06F3/0649; backup systems G06F11/1446
• CPC Class Codes: G06F 16/125 characterised by the use of retention policies retention policies for HSM systems G06F16/185
• CPC Class Codes: G06F 16/20 of structured data, e.g. relational data
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: Y10S 707/99931 Database or file accessing
• CPC Class Codes: Y10S 707/99954 Version management
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

Provided are a method, system, and program for archiving files. A hierarchical file system having directories is provided. An archival retention policy is associated with at least one of the directories in the hierarchical file system, wherein the retention policy applies to files included in the associated directory, and wherein the retention policy specifies a retention time indicating a time period during which a file is subject to the retention policy.

Claims

1. A computer implemented method for archiving files in a computer system, comprising:

providing a hierarchical file system having directories in a computer readable storage medium;

associating an archival retention policy with at least one of the directories in the hierarchical file system by including a description of the retention policy in a name of the at least one directory, wherein the retention policy indicated in the name of the directory applies to files included in the associated directory, and wherein the retention policy specifies a retention time indicating a time period during which a file is subject to the retention policy;

receiving a request directed to a target file;

determining whether the target file is included within the directory including a description of the retention policy in the name of the directory;

determining whether the retention time of the retention policy indicates that the target file is currently subject to retention in response to determining that the target file is included within the directory whose name includes the description of the retention policy;

applying the retention policy to the target file if the target file is currently subject to the retention policy; and

determining whether the target file is included within the directory whose name includes a description of an unlimited retention that is a subdirectory of the directory associated with the retention policy, wherein the received request directed to the target file is not allowed to proceed if the target file is also included within one directory whose name includes the description of the unlimited retention even if the target file is not currently subject to the retention policy.

2. The method of claim 1, wherein including the description of the retention policy in the name of the at least one directory comprises including the description of the retention policy in a pathname of the directory in the hierarchical file system.

3. The method of claim 1, wherein the name of the directory including the description of the retention policy is displayed in a display of the hierarchical file system.

4. The method of claim 1, wherein the description of the retention policy included in the name of the directory specifies a time period of the retention.

5. The method of claim 1, further comprising:

receiving file system commands to include a file in the at least one directory associated with the archival retention policy, wherein using the file system commands to include the file in the directory subjects the included file with the archival retention policy associated with the directory.

6. The method of claim 1, further comprising:

processing by an archival filter program the description of the retention policy in the name of the directory to implement the retention policy.

7. The method of claim 1, wherein the time period comprises one of:

a specified date, wherein the retention policy applies to files in the directory prior to the specified date;

a specified time period, wherein the retention policy applies to each file in the directory for the specified time period following a time the file was modified; and

an unlimited period of time.

8. The method of claim 1, wherein the retention policy applies up until the retention time, and wherein the retention policy applies to the target file if a current time is not greater than the retention time.

9. The method of claim 1, wherein the retention time specifies a time period, and wherein the retention policy applies to the target file if a current time is not greater than a time comprising a time the target file was last modified plus the specified time period.

10. The method of claim 1, wherein the request directed to the target file comprises a request to erase or move the target file, and wherein applying the retention policy comprises preventing the request to erase or move the target file from occurring.

11. The method of claim 1, wherein if the target file is not currently subject to the retention policy, then allowing the received request directed to the target file to proceed.

12. The method of claim 1, wherein additional subdirectories may be included in the directory associated with the retention policy, and wherein the retention policy applies to any file within the additional subdirectories.

13. The method of claim 1, wherein the directory associated with the retention policy is a subdirectory of another directory.

15. The system of claim 1, wherein including the description of the retention policy in the name of the at least one directory comprises including the description of the retention policy in a pathname of the directory in the hierarchical file system.

16. The system of claim 1, wherein the name of the directory including the description of the retention policy is displayed in a display of the hierarchical file system.

17. The system of claim 1, wherein the description of the retention policy included in the name of the directory specifies a time period of the retention.

18. The system of claim 1, wherein additional subdirectories may be included in the directory associated with the retention policy, and wherein the retention policy applies to any file within the additional subdirectories.

14. A system archiving files, comprising:

a processor;

a computer readable storage medium including;

a hierarchical file system having directories in a computer readable medium;

an archival retention policy associated with at least one of the directories in the hierarchical file system by including a description of the retention policy in a name of the at least one directory, wherein the retention policy indicated in the name of the directory applies to files included in the associated directory, and wherein the retention policy specifies a retention time indicating a time period during which a file is subject to the retention policy;

code executed by the processor to perform operations, the operations comprising;

receiving a request directed to a target file;

determining whether the target file is included within the directory including a description of the retention policy in the name of the directory;

determining whether the retention time of the retention policy indicates that the target file is currently subject to retention in response to determining that the target file is included within the directory whose name includes the description of the retention policy;

applying the retention policy to the target file if the target file is currently subject to the retention policy; and

determining whether the target file is included within the directory whose name includes a description of an unlimited retention that is a subdirectory of the directory associated with the retention policy, wherein the received request directed to the target file is not allowed to proceed if the target file is also included within one directory whose name includes the description of the unlimited retention even if the target file is not currently subject to the retention policy.

19. An article of manufacture comprising a computer readable storage medium having code executed by a processor for archiving files by performing operations, the operations comprising:

providing a hierarchical file system having directories in a computer readable medium;

associating an archival retention policy with at least one of the directories in the hierarchical file system by including a description of the retention policy in a name of the at least one directory, wherein the retention policy indicated in the name of the directory applies to files included in the associated directory, and wherein the retention policy specifies a retention time indicating a time period during which a file is subject to the retention policy;

receiving a request directed to a target file;

determining whether the target file is included within the directory including a description of the retention policy in the name of the directory;

determining whether the retention time of the retention policy indicates that the target file is currently subject to retention in response to determining that the target file is included within the directory whose name includes the description of the retention policy;

applying the retention policy to the target file if the target file is currently subject to the retention policy; and

determining whether the target file is included within the directory whose name includes a description of an unlimited retention that is a subdirectory of the directory associated with the retention policy, wherein the received request directed to the target file is not allowed to proceed if the target file is also included within one directory whose name includes the description of the unlimited retention even if the target file is not currently subject to the retention policy.

20. The article of manufacture of claim 19, wherein including the description of the retention policy in the name of the at least one directory comprises including the description of the retention policy in a pathname of the directory in the hierarchical file system.

21. The article of manufacture of claim 19, wherein the name of the directory including the description of the retention policy is displayed in a display of the hierarchical file system.

22. The article of manufacture of claim 19, wherein the description of the retention policy included in the name of the directory specifies a time period of the retention.

23. The article of manufacture of claim 19, wherein additional subdirectories may be included in the directory associated with the retention policy, and wherein the retention policy applies to any file within the additional subdirectories.