What's in this release

Improvements

• Improves the cache hit rate of NFS clients and optimizes metadata operation performance, including file and directory queries.
• Switches the default delegation type of the create operation from shared to exclusive to avoid delegation conflicts when creating and writing files.
• Reduces the latency in creating files in O_EXCL mode.
• Proactively releases exclusive delegations to reduce latency when multiple clients access files.
• Optimizes the performance of the readdir operation by skipping the attribute query operation when the client accesses the file system through the NFSv3 protocol.
• Optimizes the implementation of unlink to enhance performance when deleting files.
• Implements a negative cache in sfs-client to reduce lookup requests, enhancing the performance of file creation.
• Switches the shard leader proactively when the status of the sfs-meta or sfs-data service is abnormal to minimize I/O pause time.
• Disables the cadvisor service from listening on port 8080 of the file management network.

Resolved issues

• The file access IP address might be migrated to an abnormal file controller. The issue has been resolved in this release.
• Error code metrics were missing when the client accessed the file system via the NFSv3 protocol. The issue has been resolved in this release.
• After the file access IP address migration, the source file controller kept processing requests unexpectedly, causing data corruption. The issue has been resolved in this release.
• All working threads of nfs-ganesha became stuck after the network service failure of the file storage cluster, preventing the client from mounting the file system. The issue has been resolved in this release.
• The segmentation fault occurred because of the use-after-free error caused by sfs-data and sfs-meta. The issue has been resolved in this release.
• Asynchronous file deletion became stuck, causing subsequent I/O requests to hang. The issue has been resolved in this release.
• When a file was deleted by another client while being accessed, nfs-ganesha would experience an unexpected crash. The issue has been resolved in this release.
• Metadata might become inconsistent with data upon a file controller failure. The issue has been resolved in this release.
• The performance metrics displayed in AOC might appear higher than the actual values. The issue has been resolved in this release.