US 2016/0253247 A1 · METHOD AND DEVICE FOR RESTORING SYSTEM FILE INDEXES

Abstract

The present invention provides a method and device for restoring system file indexes, which belongs to the technical field of data store methods. In the present invention, when a storage medium is loaded and an index information set is not read, or when the storage medium is loaded and the indexes in the index information set are judged to be incorrect, or when a read operation is executed for a file in the storage medium and an index of the file in the index information set doesn't correspond to a backup index in the file, or when a writing operation is executed for a file in the storage medium and an index of the file in the index information set doesn't correspond to a backup index in the file, the backup indexes of all files in the storage medium are updated, and the index information set is restored or re-established. By using the method and device for restoring system file indexes of the present invention, a deficiency of repeated restarts without recording is overcome.

Claims10

Dependent claims

A method for restoring system file index, comprising:

step A. when a storage medium is loaded, judging whether an index information set is read or not, if no, executing a step E, if yes, executing a step B;
step B. judging whether an index in the index information set is correct or not, if no, executing the step E;
step C. when executing a read operation for a first file in the storage medium, judging whether an index of the first file in the index information set corresponds to a backup index in the first file or not, if no, executing the step E;
step D. when executing a writing operation for a second file in the storage medium, judging whether an index of the second file in the index information set corresponds to a backup index in the second file or not, if no, executing the step E;
step E. updating backup indexes of all files in the storage medium, and restoring or re-establishing the index information set.

2 more elements

A device for restoring system file index, wherein the device comprises:

a first judging module configured for judging whether an index information set is read or not when a storage medium is loaded;
a second judging module configured for judging whether an index in the index information set is correct or not;
a third judging module configured for judging whether an index of a first file in the index information set corresponds to a backup index in the first file or not when executing a read operation for the first file in the storage medium;
a fourth judging module configured for judging whether an index of a second file in the index information set corresponds to a backup index in the second file or not when executing a write operation for the second file in the storage medium;
a restoring and re-establishing module configured for updating backup indexes of all files in the storage medium, and restoring or re-establishing the index information set.

2 more elements

Dependencies are inferred from the claim text.

Method and device for restoring system file indexes

Life of this patent

Method and device for restoring system file indexes

Life of this patent

Abstract

Claims10