Date: Fri, 14 Oct 2005 12:41:26 -0500 From: Eric Anderson <anderson@centtech.com> To: Nicolas KOWALSKI <Nicolas.Kowalski@imag.fr> Cc: freebsd-fs@freebsd.org Subject: Re: FreeBSD NFS server not responding to TCP SYN packets from Linux/SunOS clients Message-ID: <434FEDC6.4040405@centtech.com> In-Reply-To: <vqopsq89euu.fsf@corbeau.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> <434FD761.3050506@centtech.com> <vqopsq89euu.fsf@corbeau.imag.fr>
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Nicolas KOWALSKI wrote: > Eric Anderson <anderson@centtech.com> writes: > > >>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. >> >> >>Man fixmount? > > > This is a FreeBSD-only command apparently. I did not find it on Linux > or Solaris. It could have been useful, by calling it before NFS > filesystems are mounted on clients, yes. It's available on Fedora Core 2 and 3 at least. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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