Date: Tue, 20 Jan 2004 21:45:00 -0500 (EST) From: "Jason M. Leonard" <fuzz@ldc.upenn.edu> To: current@freebsd.org Subject: Re: NFS: Processes marked "in disk" Message-ID: <20040120213110.J1399@lorax.ldc.upenn.edu> In-Reply-To: <Pine.NEB.3.96L.1040120202652.53972C-100000@fledge.watson.org> References: <Pine.NEB.3.96L.1040120202652.53972C-100000@fledge.watson.org>
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On Tue, 20 Jan 2004, Robert Watson wrote: > On Tue, 20 Jan 2004, Namik Dala wrote: > > > I've upgraded to 5.2-RELEASE last days. Now NFS seems to be > > broken. There is an NFS server and 2 NFS clients. The /home > > partition is shared. If I start mutt on an NFS client it wants to > > read the default mailbox (over NFS) and hangs: > > > > $ ps -auxww | fgrep mutt > > namik 71553 0.0 1.0 4221 2312 p7 D+ 1:50AM 0:00.75 mutt > > > > Is this a known problem? And is there a workaround? > > Questions: > > (1) Are you using rpc.lockd on the client? Server? Are both clinet and > server running 5.2-R? Are you using NFS over UDP, over TCP; NFSv2 or > NFSv3? > > (2) Could you show the output of "ps -axl" for hung processes? Might also > be interesting to have you recompile the kernel with "options DDB" > and "options BREAK_TO_DEBUGGER". When a process hangs on the client, > hit ctrl-alt-escape (or serial break on serial console), then type in > 'trace pid', substituting the pid of the process in question. > > There are some known issues involving NFS, most of them involving > rpc.lockd. There are some other reports of NFS problems, but they've been > hard to track down, as they appear to be very sensitive to the local > configuration. For what it's worth, I am seeing something similar. Client and server are both 5.2-R, NFSv3, TCP. Killing rpc.lockd on the client unhangs the process. 32822 1478 1398 0 96 0 5556 3892 lockd D+ p1 0:00.17 pine If this is of interest, I can recompile as suggested above and post the output. :Fuzz
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