[OpenAFS] Re: dropbox semantics ("irl")

[Jeffrey Altman]

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Adam Megacz wrote:

> Perhaps a time limit would also make sense (if file's modification
> time is more than 1 hour prior to now, refuse all storedata's, even
> beyond the end of the file).

This would be inappropriate for logging.

This is not something that can be fixed on the file server given the
lack of a "file handle" equivalent issued by the file server.  That is
why the semantics of insert are enforced by the clients.

You can't even enforce "append-only" on the file server because there is
no guarantee that clients will write dirty chunks to the file server in
a particular order.

Outside of the AFS3 RPC protocol you could enforce a time limit with a
daemon that changes the owner of the files on some periodic basis.

Jeffrey Altman
Secure Endpoints Inc.





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