"Or is the snmpd server not listing the overlay filesystems in its filesystem status output, and that is just a missing piece of information, as all the others are?"
This is the one. An snmpd server running inside a Docker container won't see the filesystem related information, like the container root's free space for example.
"Or is the snmpd server not listing the overlay filesystems in its filesystem status output, and that is just a missing piece of information, as all the others are?"
This is the one. An snmpd server running inside a Docker container won't see the filesystem related information, like the container root's free space for example.