Date: Sun, 03 Jul 2005 01:04:15 -0000 From: Mohan Srinivasan <mohan_srinivasan@yahoo.com> To: Kris Kennaway <kris@obsecurity.org> Cc: ps@FreeBSD.org, current@FreeBSD.org Subject: Re: Processes stuck in nfsreq Message-ID: <20050204172300.66172.qmail@web80605.mail.yahoo.com> In-Reply-To: <20050204071502.GA17866@xor.obsecurity.org>
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Since we don't have a core, is it possible for me to get access to your kgdb client and the target host ? I was unable to reproduce this on my setup last time I tried (when you reported the issue first). (I've been sick this week, but I can look at this first thing Monday). mohan --- Kris Kennaway <kris@obsecurity.org> wrote: > On Thu, Feb 03, 2005 at 10:29:16AM -0800, Mohan Srinivasan wrote: > > Hi, > > > > In the info you have below, the NFS request was not sent (R_SENT > > is not set). We didn't send out the request because possibly nm_cwnd > > didn't allow us to send the request. If nfs_request() could not send > > the request, then typically, the request would be retransmitted from > > nfs_timer(). > > > > If nm_cwnd is full, then there must be a lot of outstanding requests > > that haven't been replied to yet (on this mount), which is the fundamental > > issue. > > > > Can you force a core dump and send me a pointer to it ? > > > > Also, after you force a core, can you also try a quick workaround - someone > > else also reported NFS client hangs and said that things were fine > > after they set mpsafenet to 0. It would be good to see if there's a > > correlation there. > > FYI, it looks like turning off mpsafenet indeed masks the bug. > > Kris > > ATTACHMENT part 2 application/pgp-signature
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