Please download the dossier by clicking on the dossier button x
×

Preserving file metadata during atomic save operations

  • US 10,289,692 B2
  • Filed: 11/25/2013
  • Issued: 05/14/2019
  • Est. Priority Date: 09/30/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method of preserving file metadata associated with an atomic save operation, comprising:

  • on a device;

    obtaining log information regarding a plurality of file system operations, wherein the plurality of file system operations include create, delete, and/or rename operations on one or more files in a file system;

    identifying in the log two or more file system operations that together comprise an atomic save of a particular file of the one or more files;

    wherein the two or more file system operations include a first operation involving a first version of the particular file and a second operation involving a second version of the particular file, the second version subsequent to the first version, andwherein the first version has first metadata and the second version has second metadata, distinct from the first metadata; and

    in accordance with the identification of the two or more file system operations as comprising said atomic save, replacing at least a portion of the second metadata with at least a portion of the first metadata, including replacing a globally unique file identifier and/or file access permissions;

    wherein,prior to the replacing, the second metadata includes a respective globally unique file identifier and/or respective file access permissions that differ from a respective globally unique file identifier and/or respective file access permissions in the first metadata; and

    replacing the at least a portion of the second metadata includes swapping between the second metadata and the first metadata a respective subset of the second metadata with a respective subset of the first metadata.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×