Date: Mon, 17 Oct 2005 14:24:35 +0200 From: Nicolas KOWALSKI <Nicolas.Kowalski@imag.fr> To: freebsd-fs@freebsd.org Subject: [UPDATE] Re: FreeBSD NFS server not responding to TCP SYN packets from Linux/SunOS clients Message-ID: <Pine.LNX.4.64.0510171347100.5718@corbeau.imag.fr> In-Reply-To: <vqou0fkw92s.fsf@obiou.imag.fr> References: <Pine.LNX.4.64.0510141021290.22064@corbeau.imag.fr> <20051014160128.hev160v52ossokg0@wwws.cs.ait.ac.th> <20051014045824.V5343@odysseus.silby.com> <vqou0fkw92s.fsf@obiou.imag.fr>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 14 Oct 2005, Nicolas KOWALSKI wrote: > Mike Silbersack <silby@silby.com> writes: > > Actually, there may be a quick fix for this specific machine. If > > you set net.inet.tcp.keepidle to 1 minute (60*whatever kern.hz is), > > that'll cause keepalive packets to be sent every minute to an idle > > connection, rather than every 2 hours. That would kill the stuck > > connections much quicker. > > Unfortunately, this does not work as expected. I just tested with my > workstation (Linux 2.6), with NFS filesystems mounted with TCP; when > the station rebooted abruptely, mounting the same NFS filesystems hung > more than 1 minute (15 minutes just now). During this hang, I saw on > the server, using netstat, the nfsd process related to my workstation > in ESTABLISHED state. Thanks to Olivier, his suggestion to restart the nfsd processes after setting net.inet.tcp.keepidle makes the situation much better ! Now, this work as expected ; Linux and SunOS workstations do not hang more than a few seconds when mounting shares from the FreeBSD server after an unclean shutdown. I am still waiting for other problems to come up with this configuration, but after a few hours, it just looks really good. :-) Many thanks to all ! Best regards, -- Nicolas
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.LNX.4.64.0510171347100.5718>