> > > Just one question: does someone use IBM Tivoli Continous Data > > > Protection Software and save that backup onto OpenAFS 1.7.x > > > \\AFS\... ? > > > > TCDP makes extensive use of symlinks and byte-range file locking. I > > doubt it would work well in AFS. > > Well, byte-range locks between machines or on the same one? We should > be able to handle them between processes on the same client pretty well on > some platforms.
"It depends". The Unix and Windows implementations of TDCP take very different approaches to updating the data stores, and the z/OS implementation is different yet in that it's handled almost exclusively in the CF locking subsystem for global dataset locks and the app doesn't have to deal with it. Weird, but screamingly efficient on that platform. There are also about 14 zillion ways to set up datastores. Usually TDCP is updating a remote data store (otherwise not much point in running it), so it would involve multiple machines. If you wanted a general model, it's more like running a DBMS than writing to a file. That kind of workload (from what I've observed) doesn't seem to work very well in AFS without some contortions, and your backup data is the last place you want to experiment with "weird". _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
