Date: Thu, 26 May 2005 10:57:51 +0200 From: Bernd Walter <ticso@cicely12.cicely.de> To: Oliver Lehmann <lehmann@ans-netz.de> Cc: stable@freebsd.org, Mohan Srinivasan <mohan_srinivasan@yahoo.com>, current@freebsd.org Subject: Re: problems with nfs+TCP - Resource temporarily unavailable Message-ID: <20050526085750.GZ80082@cicely12.cicely.de> In-Reply-To: <20050526010325.02415410.lehmann@ans-netz.de> References: <20050525223355.56551.qmail@web80601.mail.yahoo.com> <20050526010325.02415410.lehmann@ans-netz.de>
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On Thu, May 26, 2005 at 01:03:25AM +0200, Oliver Lehmann wrote: > ###### > > > I tried the same with an other nfs server (using dill as nfs server this > time - system description is in my 1st mail, same mount options like / > mnt/files). And guess what? dill rebooted immediate... dd came never > back, gave no output > > dill's dmesg shows me: > > fatal kernel trap: > > trap entry = 0x4 (unaligned access fault) > faulting va = 0xfffffc0006b6f44d > opcode = 0x28 > register = 0x5 > pc = 0xfffffc0000541e08 > ra = 0xfffffc0000541df4 > sp = 0xfffffe000a0f9b70 > usp = 0x11ffea80 > curthread = 0xfffffc000f91ee10 > pid = 343, comm = nfsd This is absolutely known - TCP/nfs has bugs in realigning packets. Don't use TCP on strong aligned architectures. -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.de
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