home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.unix.misc
- Path: sparky!uunet!bcstec!bronte!calamity!paula
- From: paula@atc.boeing.com (Paul Allen)
- Subject: Re: What makes Unix Special?
- Message-ID: <1993Jan9.125052.12247@bronte.boeing.com>
- Sender: usenet@bronte.boeing.com (For news)
- Reply-To: paula@atc.boeing.com
- Organization: Boeing Computer Services
- References: <7JAN199312365350@author.gsfc.nasa.gov>
- Date: Sat, 9 Jan 1993 12:50:52 GMT
- Lines: 52
-
- In article 7JAN199312365350@author.gsfc.nasa.gov, rkoehler@author.gsfc.nasa.gov (Bob Koehler) writes:
- >In article <1993Jan6.090749.6873@uhura1.uucp>, bryan%uhura1@uunet.uu.net writes...
- >>
- >>It's also really nice to sit (site?) on a UNIX machine and
- >> emacs /net/host/file
- >>where "host" doesn't have an editor you like, or to [...]
- >
- > If /net/host is just an NFS mount point for "host", then I'm not impressed.
- >We all know NFS. I don't expect that every remote system that gives me an
- >account will also NFS export for me, nor am I sure I want to add any more NFS
- >traffic to my existing network. If this isn't NFS, someone please explain
- >a bit more, because none of my systems will recognize such syntax in any other
- >way.
-
- Bryan was talking about the NFS automounter known as "amd". Since you seem to
- have a strong negative opinion of NFS, would you care to compare it with other
- file-sharing protocols. I'd love to hear NFS contrasted with Andrew, but
- RFS and DECnet are also somewhat interesting.
-
- I run a Sun network in which I aim for location-independence. By this
- I mean that the users never need to know what server has a particular
- file in order to find it. The global password file lists my home
- directory as /users/paula, and the automounter makes sure that my home
- directory appears at that point in the local machine's hierarchy no
- matter what machine I happen to be on. If I run a command that is
- hopelessly architecture- and version-specific like "top", the
- automounter mounts the appropriate copy of /usr/local/kvm for me. One
- only needs to know the name of a project to find that project's working
- directory under the /proj hierarchy. The automounter knows which disks
- each of these things really inhabits, but it allows the users to go
- about their work without worrying about such details.
-
- The seamless illusion that can be provided by an NFS automounter is
- marred somewhat by the fact that the illusion is constructed from
- symlinks and the actual machine-specific filesystems are visible behind
- the links. I have been given the impression by several Andrew
- advocates that the afs filesystem does not have a visible "man behind
- the curtain" pulling levers and creating the illusion of a seamless
- filesystem. Would anyone care to elaborate on this?
-
- Mr. Koehler seems to imply that NFS is a particularly ineffecient protocol.
- OK. That may be true. Is there another file-sharing protocol that's as
- widely available as NFS and uses network bandwidth more effectively? I
- have a busy net, and will be happy to listen to suggestions for ways to
- improve service to my users.
-
- Paul Allen
-
- Paul L. Allen -- Paul.Allen@atc.boeing.com or ...!uw-beaver!bcsaic!Paul.Allen
- Boeing Computer Services, Research & Technology, Computing Environment (whew!)
- "Whether you believe that you can or that you cannot, you're right!" (unknown)
-
-