[Linux-cachefs] Re: [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing [try #13]

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Trond Myklebust <trond.myklebust@xxxxxxxxxx> wrote:

> Why the hell is it doing a mkdir in the first place?

I think the problems it is solving are these:

 (1) What happens if "/" is _not_ exported?

 (2) What happens if some intermediate directory (say "/usr") is not
     accessible?


In the first case, the automounter just makes "usr" and "usr/src", say, in the
autofs filesystem, and then mounts server:/usr/src on that.

In the second case, the automounter relies on NFS letting it make intervening
directories it couldn't otherwise access to span the gap between "/" and
"src".

David


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