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    SubjectRe: [RFC PATCH 0/2] Add VFS support for looking up paths on remote servers using a temporary mount namespace
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    On Tue, 2009-02-10 at 10:58 -0500, J. Bruce Fields wrote:
    > On Mon, Feb 09, 2009 at 01:45:34PM -0500, Trond Myklebust wrote:
    > > The following two patches attempt to improve NFSv4's ability to look up
    > > the mount path on a remote server.
    > >
    > > The first patch adds VFS support for walking the remote path, using a
    > > temporary mount namespace to represent the server's namespace, so that
    > > symlinks
    >
    > I'm a bit confused about the symlink case--I take it you're assuming
    > that symlinks in the pseudofs should be interpreted as relative to the
    > server's namespace (in keeping with traditional implementations of
    > server exports), while symlinks elsewhere should continue to be
    > intepreted relative to the client's namespace.
    >
    > Do the rfc's say anything about this?

    No, the RFCs say nothing, but interpreting symlinks as being relative to
    the server namespace would be consistent with the mount behaviour of
    NFSv2/v3. It also makes me uncomfortable to have a remote mount path
    that could refer back to the client's namespace: that would not be an
    NFS mount, but a local bind mount...

    --
    Trond Myklebust
    Linux NFS client maintainer

    NetApp
    Trond.Myklebust@netapp.com
    www.netapp.com


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