Doc: https://www.golinuxcloud.com/nfs-exports-options-examples/#4_Export_NFS_share_to_multiple_hosts

“To export a share to multiple hosts across different network range you must create individual entry of respective hosts.”

/mnt/testdrive          192.168.0.0/24(rw)

Reload NFS exports

exportfs -ra

mount.nfs: Stale file handle

the problem is on the NFS server:

exportfs -u 192.168.53.48:/stornext/backup/proxmox
cat /proc/fs/nfs/exports
exportfs -a

Checks who is mounting exported directories:

more /proc/fs/nfs/exports

Options

no_subtree_check

https://linux.die.net/man/5/exports