Directory deletion method and apparatus, and storage server

A directory deletion method, comprising:

• receiving, by a network attached storage (NAS) server, a first delete request of a host, wherein the first delete request identifies a directory of the NAS server;
• locally pre-storing, by the NAS server in response to receiving the first delete request of the host, a correspondence between a user identifier and both a target directory and subdirectories in the target directory;
• receiving, by the NAS server, a delete operation authentication request from the host, wherein the delete operation authentication request comprises user information and information about the target directory, wherein the user information comprises the user identifier or a user group identifier, and wherein the information about the target directory comprises a file name of the target directory and directory path information of the target directory;
• obtaining, by the NAS server, a file identifier (FID) of the target directory according to the correspondence and the information about the target directory when a user represented by the user information has delete permission for the target directory;
• storing, by the NAS server, the user information;
• sending, by the NAS server, a success response message to the host, wherein the success response message carries the FID;
• receiving, by the NAS server, a second delete request of the host, wherein the second delete request comprises the FID and does not comprise the user identifier;
• identifying, by the NAS server, the target directory using the FID;
• and
• performing, by the NAS server in response to receiving the second delete request of the host, a delete operation on a file and the subdirectories in the target directory, wherein the delete operation comprises:
• performing, by the NAS server, verification on the file and the subdirectories using the user information stored by the NAS server;
• and
• deleting, by the NAS server, the file and the subdirectories after the file and the subdirectories are verified.