====== NFS ====== ===== In case of problems ===== Try this on your server and remount on the client: # To free pagecache echo 1 > /proc/sys/vm/drop_caches # To free dentries and inodes echo 2 > /proc/sys/vm/drop_caches # To free pagecache, dentries and inodes echo 3 > /proc/sys/vm/drop_caches Source: [[https://unix.stackexchange.com/questions/433051/mount-nfs-stale-file-handle-error-cannot-umount]]