I figure this has to be as good a forum as any to start with :). Potato machine 'ruth' is re-exporting some directories served by an SGI O200 using the userspace NFS daemon to 'r001'. Whenever a process on r001 tries to read certain 'cluttered' directories (like most well-used home directories), however, it fills all memory and dies. Strace on r001 shows an endless series of 'getdents', while strace on ruth shows just two (typically). On one test, it crashed r001 and wedged the nfs daemon on ruth. I'd have just filed a bug report, but I can't decide who's bug it might be :).
Some background as to why I want to do this: I've got a small cluster (r00[1-5]) of diskless systems booting 2.2.14 from a ruth, and mounting root from it as well. Since they are only intended to be a compute farm, the only 'outside' network connection is via the ruth, and you must log into ruth before continuing on into the nodes. This is so that they can communicate with each other quickly and easily with few security checks on that subnet (set up as 192.168.0.x). Home directories and data files are stored on an SGI O200. It is convenient to mount those on the cluster nodes, and the easiest way I see to do it is to have the master re-export the home directory mountpoints to the cluster using the user-space NFS server (file access speed isn't particularly important, since the bulk of compute jobs are CPU and memory limited). Thanks for any suggestions, Andy Roosen -- - Andrew R. Roosen, Ph.D. - Computer Operations Administrator - Center for Theoretical and Computational Materials Science - National Institute of Standards and Technology - - [EMAIL PROTECTED] - http://www.ctcms.nist.gov/~roosen/
