[K12OSN] Kernel panic on client boot

Jim Kronebusch jim at winonacotter.org
Mon Mar 3 14:01:30 UTC 2008

On Mon, 3 Mar 2008 08:05:40 -0500, David Hopkins wrote
> Sometimes, after a server has been up for weeks, clients will start
> getting the kernel panic error on (re)boot. It seems to somehow be
> related to NFS services (or tftp, not sure which) going down. I have
> tried restarting nfs and other services, but that never fixes the
> problem. Simply rebooting the server does correct the issue, but would
> appear to be overkill. Any client systems that are already up,
> continue working, but no new clients can connect.  Has anyone seen
> this, and even better, found a way short of a system reboot to fix it?

How many clients do you have booted at a time?  I had a problem with Edubuntu when
booting my 108 clients.  Eventually I ran out of NFS threads.  If you only have 25 or so
I don't think this is a problem, but if you are running much more than that I can look
up what it was I did to increase the thread count.


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