Still at 100% disk usage after deleting files? Deleting file won’t free the space until you delete the processes that have open handles against that file. Nevertheless, you can reclaim the space. All you need to do is to remove the file descriptors. First execute lsof | grep deleted to identify the process holding the file.
mount NFS fails with errors
Start the rpcbind service and/or the nfs services to mount the NFS share.