Date: Wed, 18 Nov 1998 09:42:51 +0000 (GMT) From: Doug Rabson <dfr@nlsystems.com> To: Tom Bartol <bartol@salk.edu> Cc: freebsd-current@FreeBSD.ORG Subject: Re: NFS problems in -current Message-ID: <Pine.BSF.4.01.9811180942150.21711-100000@herring.nlsystems.com> In-Reply-To: <Pine.BSF.3.96.981117095644.341A-100000@eccles.salk.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, 17 Nov 1998, Tom Bartol wrote: > > Hi all, > > I've been seeing the following problem for a while now (since > 3.0-19981006-BETA) but was too busy at the time to report it or help > diagnose it further. Now I've got some time on my hands... > > I can fairly consistently wedge NFS writes to our server with the > following: > > dd if=/dev/zero of=ick bs=8192 count=1000 > > which tries to write an 8MB file to our file server which is an Auspex. I > have mounted Auspex from my 3.0-current machine (cvsupped and built this > morning) in NFSv3 mode. This command will wedge one or more of the nfsiod > processes. "ps -auwx | grep nfsiod" reports the following: > > root 137 0.0 0.0 216 64 ?? I 9:12AM 0:02.31 nfsiod -n 4 > root 138 0.0 0.0 216 64 ?? I 9:12AM 0:01.74 nfsiod -n 4 > root 139 0.0 0.0 216 64 ?? D 9:12AM 0:00.27 nfsiod -n 4 > root 140 0.0 0.0 216 64 ?? D 9:12AM 0:00.24 nfsiod -n 4 > > The two processes in state "D" are the wedged ones. A separate machine > running -current from July 11 works fine. > > Eventually all the nfsiod's get wedged and I'm forced to reboot. NFS > reads work fine. > > Is anyone else seeing similar behaviour? What can I do to try to fine > tune a diagnosis and help solve the problem? > > Thanks for your help, The best place to start is to get a tcpdump of the set of transactions which wedged the iod. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 951 1891 Fax: +44 181 381 1039 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.01.9811180942150.21711-100000>