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SubjectSpontaneous reboot with 2.6.10 and NFSD
I hit an obscure bug last night when trying to copy files from an nfs 
client to my nfs server. The server is a P3/800 with three IDE disks in
software RAID5 running vanilla 2.6.10 and Debian Sarge. The network is
local 100Mbit/s switched ethernet. The server exports a 220 gig
partition which contains a lot of data.

Oh, kernel configs and stuff from the server can be found from:
http://www.holviala.com/~kimmy/crash/

Anyway, I mount the export to a Linux client (tried with a few with
different 2.6 kernels and distros) and then start copying files from
clients CDROM to the server through NFS. After copying a few small
files, the first big one reboots the server. There are no log entries,
and the server has no local console so I don't know what happens. This
is reproduceable 100% of the time.

To narrow down the problem, I've tried the following:

- copied files from a different client running Gentoo: reboot
- exported a non-raided partition (hdc9) and tried that: reboot
- switched 2.6.10 to 2.6.11-rc3: reboot, but it took longer

I hope it's just something that I've done, but this server has been in
use for a long time now without any problems, and I haven't touched it
for a while.

So, if anyone knows what's wrong, or can tell me a way to debug the
situation more I'd be grateful. The server is in a place where it's
nearly impossible to have a local console - I could probably use a
serial one if necessary for debugging.



Kim

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