C# FileSystemWatcher not firing on Nas file system when making change from different computer

Question

I got multiple computer (centos) mounting a NAS file system (Apsara File Storage). Then I'm using the c# FileSystemWatcher to monitor file create/update changes. The FileSystemWatcher event only fire when changes maked by the computer which runing the program itself. ps. I've tried .netcore3.1 and .net5 version.

This is my setup.

           ... 
           using var watcher = new FileSystemWatcher(dir);
           watcher.NotifyFilter = NotifyFilters.Attributes
                             | NotifyFilters.CreationTime
                             | NotifyFilters.DirectoryName
                             | NotifyFilters.FileName;

            watcher.Created += OnCreated;
            watcher.Deleted += OnDeleted;

            watcher.Filter = "*.log";
            watcher.IncludeSubdirectories = true;

            watcher.InternalBufferSize = 8192 * 8;
            watcher.EnableRaisingEvents = true; 
            ....

Answer 1

There is plenty of questions on this site that discuss FileSystemWatcher reliability and the conclusion is always the same: it is not reliable.

• How reliable is the FileSystemWatcher in .netFramwork 4?
• FileSystemWatcher vs polling to watch for file changes
• C# FileSystemWatcher watch changes on network drive which is only done by current system
• FileSystemWatcher events raising twice despite taking measures against it
• Why are FileSystemWatcher Attribute changes detected on Windows 7 but not Windows 8?
• and the list goes on and on...

The article from Peter Meinl Tamed FileSystemWatcher describes the limitations in great detail and also provides a more reliable solution.