Date: Fri, 13 Sep 2002 10:41:02 -0700 From: Gordon Tetlow <gordont@gnf.org> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Andrew Gallatin <gallatin@cs.duke.edu>, net@FreeBSD.ORG Subject: Re: ARP move hangs NFS mount Message-ID: <20020913174102.GA79669@roark.gnf.org> In-Reply-To: <200209131613.g8DGDNcb045281@apollo.backplane.com> References: <20020912181509.GY42734@roark.gnf.org> <15745.58702.945886.573972@grasshopper.cs.duke.edu> <200209131613.g8DGDNcb045281@apollo.backplane.com>
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[-- Attachment #1 --] On Fri, Sep 13, 2002 at 09:13:23AM -0700, Matthew Dillon wrote: > :... > : > a comparison, I tried this on a linux box and it continued along without a > : > hitch. Any ideas? > : > :I'll bet that when the second head takes over, it replies using its > :own IP address, rather the IP address of the head that it took over > :from. > : > :There's something about the FreeBSD NFS client implementation which > :requires that if you make an NFS request to a certain IP address, the > :reply MUST return from that same IP address. Otherwise, the reply > :will be ignored. > : > :Matt -- Do you know off the top of your head what makes this happen? > :While I realize that its a security feature, its caused me no end of > :suffering at two different sites, and I'd really like to know how to > :disable it! ;) > : > :Thanks, > : > :Drew > > It's probably because the NFS client does a connect() equivalent > for UDP mounts as well as TCP mounts. That's my guess anyway. > I'm not home at the moment so I can't investigate fully. > > Try mounting the filesystem with the 'conn' option (or -c option to > mount_nfs). Alternatively, try using a TCP mount. This worked for me. Thanks! -gordon [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (FreeBSD) iD8DBQE9giMuRu2t9DV9ZfsRAmSCAKCbS+fchx6Y1nznUsQPcMhKgLQDjgCgxTmN CiCHz7mvPXUBhclosvib8KE= =MODC -----END PGP SIGNATURE-----help
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