(Illustration by Gaich Muramatsu)
On Wed, Dec 01, 1999 at 03:57:26PM -0600, Joel_Trunick_at_Dell.com wrote: > > I understand Transarc's AFS and DFS have the concept of an "intermediate > cache server" where you can set up a read-only replica, where the system > manages the contents and doesn't actually copy all the files, only the > requested files (removing non-requested files from the server). > > Can this be done with Coda? No this cannot be done. Thinking about it, it would be quite difficult since that intermediate server would probably be something like a modified client that exports its cache not through the kernel to userspace, but through an RPC2 interface to other clients. First of all, existing clients use a volume location database to find the replicas for a volume. All replicas are considered to be equivalent, both in cost of accessing, and read-only/read-write status. Second, what happens if a conflict occurs between the intermediate and the real servers. How is this fact forwarded to the real clients, and how could they possibly fix the problem, as it is not a local conflict. JanReceived on 1999-12-02 12:30:17