NFS
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