Path: utzoo!attcan!uunet!cs.utexas.edu!rice!sun-spots-request
From: pkinbg!caxwgk@relay.eu.net (Wolfgang Kuehnel)
Newsgroups: comp.sys.sun
Subject: Re: Nested Exports
Keywords: Software
Message-ID: <9395@brazos.Rice.edu>
Date: 27 Jun 90 08:02:42 GMT
Sender: root@rice.edu
Organization: Sun-Spots
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X-Sun-Spots-Digest: Volume 9, Issue 236, message 14

>From article <9285@brazos.Rice.edu>, by km@mathcs.emory.edu:
> Does the restriction that you cannot export both a tree and a subtree on
> the same filesystem still apply? If so does this mean that you can't
> export a whole partition to one machine and a restricted piece to another?
> Whats the reason for this restriction?

In SunOs4.1 this restriction still exisists.  (In my opinion this
restriction is not a restriction in everyday use.) You have to distinct
between exporting a filesystem (making it accessible to the clients) by
the host and mounting the filesystem by the client(s). Of course you can
export a whole filesystem and mount subtrees of that filesystem on
specific clients. (For example, export the /home partition and
(auto-)mount the home directories of users on the machine they are
actually logged in.) For more security, you can export a filesystem
read-only by the "ro" option, specifing read/write access for trusted
clients by the option "rw=clientname".  I think this is almost what you
want to do. Hope that helps and I didn't waste your time.