Date: Fri, 14 Oct 2005 19:47:26 +0200 From: Nicolas KOWALSKI <Nicolas.Kowalski@imag.fr> To: freebsd-fs@FreeBSD.org Subject: Re: FreeBSD NFS server not responding to TCP SYN packets from Linux/SunOS clients Message-ID: <vqoll0w9ej5.fsf@corbeau.imag.fr> In-Reply-To: <434FEDC6.4040405@centtech.com> 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> <434FEDC6.4040405@centtech.com>
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Eric Anderson <anderson@centtech.com> writes: > 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. So, its a non-option, because we are only using Debian Sarge and Solaris 9 UNIX workstations. :-( Thanks for your advice, -- Nicolas
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