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US005778389A

United States Patent [19] [ii] Patent Number: 5,778,389

Pruett et al. [45] Date of Patent: Jul. 7, 1998

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[56] References Cited

U.S. PATENT DOCUMENTS

4,875,159 10/1989 Cary et al 395/619

5,163,148 11/1992 Walls 707/204

5,537 587 7/1996 Kelley et al 395/616

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5,708,812 1/1998 Van Dyke et al 707/103

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OTHER PUBLICATIONS

Fitzgerald. Michael, Desktop Computing, p. 35. Oct. 1993. Patton, Carole, Desktop Computing, p. 40. Jan. 1994. Fitzgerald, Micheal, Desktop Computing, p. 41, Jun. 1994. Honeyman et al. "Communications and Consistency in Mobile File Systems", CITI Technical Report 95-11, Oct. 1995.

"Windows: Linkpro Announces the Shipment of Powersync, An Intelligent File", Edge: Work-Group Computering Report. Feb. 28. 1994.

Rigney, Steve "Linkpro Helps Keep your Files in Sync", PC Magazine-Network Edition, v 13. No. ll.pNE38. Jun. 1994. linkpro Updates File-Sync Ware, Communications Week. Nov. 1994.

"Linkpro Software Synchronizes Network Data From Remote Users", Communications Week. Nov. 1994. Satyanarayanan, Mahadev "Scalable, Secure, and Highly Available Distributed File Access", Computer Magazine. v23. No. 5. pp. 9-16. May 1990.

Satyanarayanan et al. "Coda: A Highly Available File System for a Distributed Workstation Environment". IEEE Transactions on Computers. v39. No. 4. pp. 447-459, Apr. 1990.

Kumar. Puneet "Coping with conflicts in a Optimistically Replicated File System", Management of Replicated Data, 1990 Workshop, p. 60-y4, 1990.

Satyanarayanan. Mahadev "The Influence of Scale on Distributed File SystemDesign",vl8. No. l.pp. 1-8. Jan. 1992. Satyanarayanan et al. "On the Ubiquity of Logging in Distributed File Systems". Workstation Operating Systems. 1992. pp. 122-125.

Satyanarayanan et al. "Hot Topics: Mobile Computing". Computer Magazine, v26. No. 9. pp. 81-82, Sep. 1993. Varhol, Peter D. "Linkpro: no files Unsyncable—PowerSync vl.10". Mobile Office. v5. No. 9. p. 38. Sep. 1994. Santalesa, Rich "Sync Files for Hard-disk Harmony: PowerSync 2.0", Windows Magazine, v6. No. 7, p. 86. Jun. 1995.

Kumar et al. "Log-Based Directory Resolution in the Coda File System". Parallel and Distributed Information Systems. 1993 IntT Conf.. pp. 202-213. 1993.

Primary Examiner—Thomas G. Black

Assistant Examiner—Charles L. Rones

Attorney, Agent, or Firm—Robert W. Holland; L. Joy

Griebenow

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A method and system for automatically synchronizing a target and source directory in a computer system are provided. The system (8) includes a first file directory (32) which has a first plurality of files (33). A second file directory (70) has a second plurality of files (71). A directory synchronizer (14) sequentially selects one of the first plurality of files (33). determines whether one of the second plurality of files (71) is substantially similar to the selected one of the first plurality of files (33). and copies the selected one of the first plurality of files (33) into the second file directory (70) if no similar file is found.

13 Claims, 4 Drawing Sheets

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