On a Linux system it seems I can't kill my process I just started.
ps -ax output:
6731 pts/1 DLl 0:06 ./main
kill -9 6731
but it just stays there. I don't have root access. What are my options?
It's blocked on disk IO (uninterruptible sleep). Is it on an NFS volume? It will be killed once it's unblocked.
If it is doing disk IO on an NFS volume and that volume is unreachable then you normally can't kill it. If you mount the NFS with "intr" option then you should be able to signal the process (kill it). If it is not mounted that way now then you probably will have to reboot to clear it. The best option is to just get the NFS server to come back and service the request.