We lost a good chunk of Tintin (I think) when someone tried to use the OSX migration assistant to upgrade a Macbook that had some production volumes NFS mounted

We lost a good chunk of Tintin (I think) when someone tried to use the OSX migration assistant to upgrade a Macbook that had some production volumes NFS mounted. It was trying in vain to copy several PB of data (I am convinced that nobody at Apple has ever seen or heard of NFS), and because it was so slow the user hit cancelled and it somehow tried to undo the copy and started deleting all the files on the NFS servers. There was another incident where there was a script that ran out of cron to cleanup old files in /tmp, and someone NFS mounted a production volume into /tmp... Eventually we put tarpit directories at the top of each filesystem (a directory with 1000 subdirectories each with 1000 subdirectories, several layers deep) to try and catch deletes like the one you saw, then we would alert if any directories in there were deleted so we could frantically try and figure out which workstation was doing the damage.