Messages in this thread | | | Date | Mon, 12 Jan 2004 11:26:30 -0500 | From | Mike Waychison <> | Subject | Re: [autofs] [RFC] Towards a Modern Autofs |
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raven@themaw.net wrote:
>On Mon, 12 Jan 2004, Mike Waychison wrote: > > > >>>Transparency of an autofs filesystem (as I'm calling it) is the situation >>>where, given a map >>> >>>/usr /man1 server:/usr/man1 >>> /man2 server:/usr/man2 >>> >>>where the filesystem /usr contains, say a directory lib, that needs to be >>>available while also seeing the automounted directories. >>> >>> >>> >>> >>> >>I see. This requires direct mount triggers to do properly. Trying to >>do it with some sort of passthrough to the underlying filesystem is a >>nightmare waiting to happen.. >> >> >> > >So what are we saying here? > >We install triggers at /usr/man1 and /usr/man2. >Then suppose the map had a nobrowse option. >Does the trigger also take care of hiding man1 and man2? > >Is there some definition of these triggers? > > The example above is a direct map entry with no root offset. The semantics are different than if it were an indirect map with browsing enable.
I tested this out against other automount implementations and discovered that direct map entries with no root offsets should be broken down into several direct map entries with root offsets.. so:
/usr /man1 server:/usr/man1 \ /man2 server:/usr/man2
is the same as the two distinct entries:
/usr/man1 server:/usr/man1 /usr/man2 server:/usr/man2
Now that I think about it, the discussion in my proposal paper about multimounts with no root offsets probably isn't required.
-- Mike Waychison Sun Microsystems, Inc. 1 (650) 352-5299 voice 1 (416) 202-8336 voice mailto: Michael.Waychison@Sun.COM http://www.sun.com
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