Date: Sun, 20 Aug 95 13:48:16 MDT From: terry@cs.weber.edu (Terry Lambert) To: taob@gate.sinica.edu.tw (Brian Tao) Cc: freebsd-hackers@freebsd.org Subject: Re: Making a FreeBSD NFS server Message-ID: <9508201948.AA23045@cs.weber.edu> In-Reply-To: <Pine.BSI.3.91.950820150733.17751w-100000@aries> from "Brian Tao" at Aug 20, 95 03:16:12 pm
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> > Be warned that, though Sun and SVR4 do this too, this is a cache > > coherency violation and can result in Bad Things Happening [...] > > I think it was Garrett who remarked that the whole idea of > stateless NFS was a gross violation of filesystem consistency. ;-) The whole idea of stateful NFS would be a gross violation of municipal power grid consistency. 8-). Unless you are running everything on the same box, it's impossible to provide inter-machine consistency guarantees. That's why NFS is the way it is. > > One alternative is to use NFSv3 on both the client and the server. > > This means going all BSD or including OSF/1, > > Does this include BSD/OS 2.0 as well? I lied (apparently). There are reliable async write guarantees, not coherency guarantees. The NFSv3 is not default with FreeBSD, and it's not there for BSDI at all as far as I know. Terry Lambert terry@cs.weber.edu --- Any opinions in this posting are my own and not those of my present or previous employers.
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