Celeb Glow
news | March 20, 2026

How to prevent break of NFS connection?

First of all I am new in this forum and not a native English speaker. Out of this any help and patience would be appreciated ;-)

I have an Ubuntu server and a Linux Mint client.

For Backup reasons I provided on my client a NFS Export for my server. With this the server can do a second backup on my client.

As long as I logged in to the client, the access from the server to my client and the backup works fine.

After I log out my user from the client, the server gets a permission denied while trying to do a backup. (client is still running)

Content of /etc/exports on client:

/export/Backup2 server(rw,sync,crossmnt,no_root_squash)

Content of /etc/fstab on client:

/dev/sdb1 /home/locuser/Backup2 ext4 defaults 0 0
/home/locuser/Backup2/srv_backup /export/Backup2 none bind 0 0

Content of /etc/fstab on server:

client:/export/Backup2 /home/Backup2 nfs4 defaults,rw 0 0

The output of ls -la on the server:

....
drwxr-xr-x 4 root root 4096 Feb 22 19:54 Backup
d????????? ? ? ? ? ? Backup2
....

I assumed that the shares are still available after logout. It seems, that I am wrong. How can I keep the shares available after logout, or what did I wrong?

1 Answer

I found the solution myself and I want to share it with you:

In the past, I entered my known hosts only in the /etc/hosts file. After entering the same into /etc/hosts.allow file everything works fine.

2

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