Re: [NFS] export dir thru 2 diff path names

["J. Bruce Fields" <bfields@fieldses.org>]

On Mon, Nov 10, 2008 at 12:05:52PM -0500, Sev Binello wrote:
> J. Bruce Fields wrote:
> > OK, makes sense.
> >
> > You could mount --bind the filesystem at the other location instead of
> > symlinking.
> >
> > The filehandles given to the client will be the same across the two
> > exports.  If you mount both from the same client, behavior may vary
> > across different clients (for example, as to whether they attempt to
> > share caches between the two), but I think it'd work.
> >
> > (The question "why??!!??" does come to mind, though.)
> >
> >   
> Need to make a path change to how file systems are mounted and exported 
> on the servers
> This then required a wholesale change to clients so they mount  the 
> correct path.
>  Not an issue for linux.
> But since we don't administer windows pcs and they also mount the same 
> file system,
> wanted to see if we could let them stay the way they were for now.

Oh, OK, so you just to export at both paths just as a way to do a
gradual migration of clients from one to the other.  Fine.

--b.

> 
> We're just going to go ahead and  have to coordinate this with windows guys.
> 
> -Sev
> > --b.
> >
> >   
> >> -Sev
> >>
> >> J. Bruce Fields wrote:
> >>     
> >>> On Fri, Nov 07, 2008 at 12:44:25PM -0500, Sev Binello wrote:
> >>>   
> >>>       
> >>>> Can anyone tell me if it's ok to export the same file system
> >>>> through 2 different paths ( one is a link) ?
> >>>>     
> >>>>         
> >>> I actually don't know.  You could try it and tell us what you find
> >>> out....
> >>>
> >>> If you're exporting something *containing* the symlink and expecting the
> >>> client to traverse into the filesystem, be aware that symlinks over NFS
> >>> are actually interpreted (and followed) on the client--so they're
> >>> interpreted as *client-side* paths, not server-side.
> >>>
> >>> If the path you're exporting is itself a symlink--it probably depends on
> >>> how nfs-utils treats symlinks found in /etc/exports.  I'd have to try it
> >>> or check the code.
> >>>
> >>> Another way to export the filesystem in two different places would be
> >>> with mount --bind.
> >>>
> >>> --b.
> >>>   
> >>>       
> >> -- 
> >>
> >> Sev Binello
> >> Brookhaven National Laboratory
> >> Upton, New York
> >> 631-344-5647
> >> sev-IGkKxAqZmp0@public.gmane.org
> >>
> >>     
> 
> 
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