vfs.fs.get can now silently skip mount points if the Zabbix agent user does not have permission to retrieve file system statistics. 

For example, if /data/nested_mount is mounted inside the /data directory with permissions set to 700, then:

• the mounting point exists on /proc/self/mountinfo;
• is displayed in vfs.fs.discovery;
• is not available in vfs.fs.get

It is safe, because vfs.fs.get is often used to detect file systems. As a result, the file system may not be detected without any warning.

Recommended improvements:

• do not hide an unavailable mount points;
• include them in the error output (e.g., “Permission denied”);
• or add a separate diagnostic/parameter to display missed points.

Benefits: more transparent and reliable detection of file system issues, and the ability to separate file system issues from access permission issues.