LX0-104 · Question #207
Which of the following export options, when specified in /etc/exports, will tell the server to use the NFSv4 Pseudofilesystem?
The correct answer is B. fsid=0. In the /etc/exports file, the fsid=0 export option is used to designate a directory as the root of the NFSv4 pseudofilesystem.
Question
Options
- Afsid=2
- Bfsid=0
- Cfsid=3
- Dfsid=1
How the community answered
(29 responses)- A3% (1)
- B93% (27)
- C3% (1)
Why each option
In the `/etc/exports` file, the `fsid=0` export option is used to designate a directory as the root of the NFSv4 pseudofilesystem.
While `fsid` can uniquely identify filesystems for NFSv2/v3, `fsid=2` does not have the special meaning of designating the NFSv4 pseudoroot.
The `fsid=0` option in `/etc/exports` specifically configures an exported directory to serve as the NFSv4 pseudoroot. This is a critical configuration for NFSv4, as all other NFSv4 exports are typically mounted as subdirectories under this designated pseudoroot.
`fsid=3` is a valid filesystem identifier, but it does not specifically configure the NFSv4 pseudofilesystem root.
`fsid=1` is a valid filesystem identifier, but it does not have the special function of defining the NFSv4 pseudoroot.
Concept tested: NFSv4 pseudofilesystem configuration
Source: https://manpages.debian.org/unstable/nfs-kernel-server/exports.5.en.html
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