| 摘要 |
A data deleting method and apparatus is provided in embodiments of this invention. The method comprises: when a file system detects a delete request for a target file, examining a security property of the target file, wherein the security property of a file comprises secret classified property; if the security property of the target file is secret classified property, executing an overwrite operation on the target file and then executing a delete operation to delete the target file; wherein the overwrite operation comprises sending a write command to a SSD, the write command being a predefined write command which is expanded by adding an immediate scrubbing flag, to cause the SSD to invoke a backstage garbage collection program according to the predefined write command to immediately delete data on garbage blocks corresponding to logical block addresses of the target file. With this invention, thorough deleting of the target file can be realized, invalid data recovery of the target file can be avoided, and data security of the target file can be guaranteed. |
