When mounting a valid share, NFS denies access:
$ mount /mnt/backup mount.nfs: access denied by server while mounting server:/share/USBDisk1
The mount point is not exported.
Find out where the mount point points to on the client side (although, that info was already in the error message):
$ cat /etc/fstab # /etc/fstab: static file system information. ... # Backup disk on 1TB external USB drive - no auto mount server:/share/USBDisk1 /mnt/backup nfs defaults,users,noexec,noauto
On the server side:
$ ssh admin@server # ll /share/USBDisk1 lrwxrwxrwx 1 admin administ 20 Feb 21 00:03 /share/USBDisk1 -> /share/external/sdt1/ # cat /etc/exports "/share/MD0_DATA/Download" *(rw,async,no_root_squash,insecure) "/share/MD0_DATA/Multimedia" *(rw,async,no_root_squash,insecure) "/share/MD0_DATA/Public" *(rw,async,no_root_squash,insecure) "/share/MD0_DATA/Web" *(rw,async,no_root_squash,insecure)
As you can see, /share/external/sdt1/ is not there, edit the file and add the line:
For added security, you may want to replace “*“ with something like
Then use (this is the critical part):
[~] # exportfs -a
You’ll get a bunch of error messages:
exportfs: /etc/exports : Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/share/external/sdt1". Assuming default behaviour ('no_subtree_check'). NOTE: this default has changed since nfs-utils version 1.0.x
but that’s fine, they can be ignored.
$ mount /mnt/backup
will work as expected.