SYSTEM AND METHOD FOR ENABLING A CLIENT SYSTEM TO GENERATE FILE SYSTEM OPERATIONS ON A FILE SYSTEM DATA SET USING A VIRTUAL NAMESPACE

• US 20150347402A1
• Filed: 05/29/2014
• Published: 12/03/2015
• Est. Priority Date: 05/29/2014
• Status: Abandoned Application

• Current Assignee: NetApp, Inc.
• Original Assignee: NetApp, Inc.
• Inventors: McKinion, James
• Application Number:
  US14/290,854
• Publication Number:
  US 20150347402A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/182 Distributed file systems
• CPC Class Codes: G06F 16/188 Virtual file systems

Abstract

A file system data set is scanned to (i) identify the file system objects of the file system data set, and (ii) obtain contextual data and metadata for file system objects of the file system data set. A virtual namespace for the file system data set is then constructed using the contextual data and the metadata. From a computer system, one or more atomic file system operations are issued to exercise the file system data set using the virtual namespace.

Claims

1. A method for operating a client system to exercise a file system data set, the method being implemented by one or more processors and comprising:

scanning the file system data set to (i) identify the file system objects of the file system data set, and (ii) each of contextual data and metadata for file system objects of the file system data set;

determining a virtual namespace for the file system data set using the contextual data and the metadata; and

implementing, from a client computer, one or more file system operations on the file system data set using the virtual namespace.

2. The method of claim 1, further comprising updating the virtual namespace based on the one or more file system operations so that the virtual namespace is coherent with the file system data set.

3. The method of claim 2, wherein updating the virtual namespace includes (i) detecting file system operations which create, remove, or rename a file system object of the file system dataset, and (ii) updating the virtual namespace to the created, removed, or renamed file system object.

4. The method of claim 1, wherein scanning the file system data set includes generating multiple threads that scan a hierarchy of the file system data set using a depth first priority.

5. The method of claim 1, wherein scanning the file system data set includes detecting multiple kinds of file system objects, and maintaining a count of each of the multiple kinds of objects that are detected in the file system data set.

6. The method of claim 1, further comprising maintaining the virtual namespace within a data structure stored in a memory resource of the client computer.

7. The method of claim 1, further comprising determining the one or more file system operations based on the virtual namespace, the one or more file system operations being selected to evaluate the file system data set.

8. The method of claim 1, wherein scanning the file system data set includes:

detecting file system objects of the file system data set which include hardlinks; and

associating corresponding objects of the virtual namespace with the detected hardlinks.

9. The method of claim 8, wherein scanning the file system data set includes maintaining an inode dictionary for the virtual namespace, including associating each inode that is referenced by file system objects of the file system data set with a set of values, the set of values for each inode indicating a number of hardlinks that are provided with that inode.

10. The method of claim 1, wherein the virtual namespace object paths are formatted in Unicode.

11. A non-transitory computer-readable medium that stores instructions, that when executed by one or more processors, cause the one or more processors to perform operations comprising:

scanning the file system data set to (i) identify the file system objects of the file system data set, and (ii) each of contextual data and metadata for file system objects of the file system data set;

determining a virtual namespace for the file system data set using the contextual data and the metadata; and

implementing, from a client computer, one or more file system operations on the file system data set using the virtual namespace.

12. The non-transitory computer-readable medium of claim 11, further comprising instructions, that when updated by one or more processors, cause the one or more processors to perform operations comprising:

updating the virtual namespace based on the one or more file system operations so that the virtual namepace is coherent with the file system data set.

13. The non-transitory computer-readable medium of claim 12, wherein updating the virtual namespace includes (i) detecting file system operations which create, remove, or rename a file system object of the file system dataset, and (ii) updating the virtual namespace to the created, removed, or renamed file system object.

14. The non-transitory computer-readable medium of claim 11, wherein scanning the file system data set includes generating multiple threads that scan a hierarchy of the file system data set using a depth first priority.

15. The non-transitory computer-readable medium of claim 11, wherein scanning the file system data set includes detecting multiple kinds of file system objects, and maintaining a count of each of the multiple kinds of objects that are detected in the file system data set.

16. The non-transitory computer-readable medium of claim 11, further comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:

maintaining the virtual namespace within a data structure stored in a memory resource of the client computer.

17. The non-transitory computer-readable medium of claim 11, further comprising determining the one or more file system operations based on the virtual namespace, the one or more file system operations being selected to evaluate the file system data set.

18. The non-transitory computer-readable medium of claim 11, wherein scanning the file system data set includes:

detecting file system objects of the file system data set which include hardlinks; and

associating corresponding objects of the virtual namespace with the detected hardlinks.

19. The non-transitory computer-readable medium of claim 18, wherein scanning the file system data set includes maintaining an inode dictionary for the virtual namespace, including associating each inode that is referenced by file system objects of the file system data set with a set of values, the set of values for each inode indicating a number of hardlinks that are provided with that inode.

20. A client computer system comprising:

memory resources that store a set of instructions and a virtual namespace;

one or more processors that use the instructions to;

scan the file system data set to (i) identify the file system objects of the file system data set, and (ii) each of contextual data and metadata for file system objects of the file system data set;

determine the virtual namespace for the file system data set using the contextual data and the metadata; and

implementing one or more file system operations on the file system data set using the virtual namespace.