(Illustration by Gaich Muramatsu)
On Wed, Sep 25, 2002 at 11:01:33AM -0700, Derek Simkowiak wrote: > > try just a cluster{ed|ing} file system. > > That's what I'm after. How is CODA not a "cluster{ed|ing}" > filesystem? Coda is a distributed filesystem. The main difference (in my mind) is that a distributed filesystem assumes a WAN, while with a cluster you assume typically better than LAN environment. (i.e. all nodes connected through a switch, or which special high speed interconnects). So a distributed filesystem would need more aggressive caching and lock avoidance to avoid the latency hit of the network. This can lead to consistency problems in case of replication. While a clustered filesystem doesn't need to cache, because it is relatively cheap to refetch the data and can use locking to guarantee node-to-node consistency. JanReceived on 2002-09-25 14:16:03