Using the mount command to mount a NFS disk is a good test practice. Sure, but on the next system reboot, the disk will “magically disappear”. That’s why we need to write the mount configuration to the so-called /etc/fstab file. This configuration file is responsible for storing all information regarding disks, disk partitions and their related options. In today’s cloud age, often and mostly used for mounting swap partitions.
Prerequisites
- NFS disk setup
- Linux
Solution
Step 1. Install the NFS tools.
apt-get -y install nfs-common
Step 2. In order to mount a NFS disk, we need to prepare a local directory. For instance:
mkdir -p /mnt/data
Step 3. Now, open the /etc/fstab file and insert the following default configuration:
<NFS_IP_ADDRESS>:/data /mnt/data nfs defaults 0 0
Using default options is a good starting point. Optimize as required.
Step 4. Verify.
nfsstat -m
Note: nfsstat -m will list the current NFS default options, also known as (flags). Example output:
/data from <NFS_IP_ADDRESS>:/mnt/data
Flags: rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=3,sec=sys,mountaddr=<NFS_IP_ADDRESS>,mountvers=3,mountport=2050,mountproto=tcp,local_lock=none,addr=<NFS_IP_ADDRESS>
Additionally, you could run: df -h --type=nfs too. Example output:
Filesystem Size Used Avail Use% Mounted on
<NFS_IP_ADDRESS>:/data 100G 8G 92G 8% /data
Step 5. To be 100% sure, reboot the instance and run the verification steps above again.
Conclusion
Related post: GCP Filestore error: “mount: wrong fs type, bad option, bad superblock”.
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