computer-implemented method of caching directory metadata locally and computer system configured to allow caching directory metadata locally

摘要

Computer-implemented method of caching directory metadata locally and computer system configured to allow directory caching locally. The present invention relates to embodiments for enabling clients (102, 104, 202) accessing a distributed file system (100, 200) to locally cache directory metadata. The client (102, 104, 202) may request a read location which allows the client to cache directory metadata locally and service requests received from the same application that originally requested directory metadata using the cache. In addition, the client (102, 104, 202) may also request a handle lease which allows a client (102, 104, 202) to delay closing a directory handle and allows the handle to be reused to serve metadata requests. subsequent directory entries of the same or different application. A client may also request a write location which allows an application on the client (102, 104, 202) to modify directory metadata, such as creating or deleting new files in the directory or changing their attributes and caching them. changes.