Date: Tue, 23 May 2006 09:59:36 -0400 From: "Howard Leadmon" <howard@leadmon.net> To: "'Rong-en Fan'" <grafan@gmail.com>, "'Konstantin Belousov'" <kostikbel@gmail.com> Cc: freebsd-stable@freebsd.org, 'Kris Kennaway' <kris@obsecurity.org> Subject: RE: Trouble with NFSd under 6.1-Stable, any ideas? Message-ID: <013b01c67e71$23aaacf0$071872cf@Leadmon.local> In-Reply-To: <6eb82e0605230556n31b86e55y1b07a2ef6ad9ca14@mail.gmail.com>
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> > > If there are any thing I can provide to help tracking this down. > > > Please let me know. By the way, I tried with truss/kdump > to see what > > > happens when nfsd eats lot of CPUs, but in vain. They do > not return anything. > > > > > I tried your recipe on 7-CURRENT with locally exported fs, > remounted > > over nfs. I did not get the behaviour your described. > > As noted in my previous thread, I have another 6.1-RELEASE > nfs server, which does not have this problem. > > > Could you, please, provide the backtrace for the nfsd that eats the > > CPU (from the ddb). I think it would be helpful to get several > > backtraces (i.e., bt <nfsd pid>, cont, bt <nfsd pid> ...) > to see where > > it running. > > I'm afraid that I can not do that. Last time I tried breaking > into ddb (on 5.x), it hangs my serial console and the server > is miles away :-( . Perhaps we can ask Howard to do that? I am more than willing to do that, as this machine runs here with me, so if needed I can easily get on a console, or perform a reboot. Can one of you shed a little light on exactly what I need to do, and how to do this? I ask as I have never used this ddb stuff, so not clue one on how to go about getting the information your looking to find. Guess I have been lucky, and just never had an issue that took things to this level. > > Also, just in case, does filesystem that is exported and shows > > problem, have quotas enabled ? One line of your fstab has > userquotas, other does not. As to userquotas, I just tried accessing the NFS mounts here, as some have filesystems with quotas, and some don't, and both are exibiting the exact same problem. So using quotas is for sure not the problem, or should I say not the trigger to the problem. > Regards, > Rong-En Fan --- Howard Leadmon http://www.leadmon.net
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