Wear leveling method and apparatus and storage medium

A wear leveling apparatus, comprising:

• a first obtaining module configured to perform error correction on a data read from a physical block to obtain a corrected data, and count corrected bits in the corrected data to obtain a number of the corrected bits, wherein the data is previously written to the physical block in a dynamic wear leveling manner or a static wear leveling manner, and the number of the corrected bits is negatively correlated with a residual service life of the physical block;
• a first detecting module configured to detect whether the obtained number of corrected bits is more than a preset bit-number threshold value;
• and
• a transferring module configured to transfer the data stored in the physical block, if the number of corrected bits is detected as more than the preset bit-number threshold value.

A storage medium containing computer-readable instructions, wherein the computer-readable instructions, when being executed by a computer processor, are configured to perform a wear leveling method comprising steps of:

• performing error correction on a data read from a physical block to obtain a corrected data, and counting corrected bits in the corrected data to obtain a number of the corrected bits, wherein the data is previously written to the physical block in a dynamic wear leveling manner or a static wear leveling manner, and the number of the corrected bits is negatively correlated with the residual service life of the physical block;
• detecting whether the obtained number of corrected bits is more than a preset bit-number threshold value;
• and
• transferring the data stored in the physical block, if the number of corrected bits is detected as more than the preset bit-number threshold value.