Michael Stowe wrote at about 14:56:38 -0500 on Monday, August 31, 2009: > > > I don't see why everything needs to worship at the alter of atomic > > operations. There are other ways to ensure that things don't go wrong. > > There probably isn't, frankly. And is there a better way of ensuring > synchrony? > > > Again, it would be helpful to know some specific use cases that you > > are concerned about then we can think about potential "locking" > > mechanisms or checks to make sure that nothing breaks. > > Were you being ironic, or did you answer your own question? The world is not atomic -- sometimes you sacrifice atomicity for functionality. Why don't you try running your computer environment with only purely atomic functions and programs?
> Atomic operations ensures that nobody has to come up with all the possible > ways that two disparate systems can drift apart. Keeping a database in > sync with a filesystem? Frankly, there are hundreds of things that can go > wrong. But reading/writing the attrib files are not atomic and things can go wrong there too. There are other aspects of BackupPC that are non-atomic and have required a combination of careful coding and sequencing. It is not clear to me that adding a formal and well-defined database to replace the existing informal and not well-defined attrib databases would be any different. If there are hundreds of things that can go wrong, please list the dozen that come first to mind... > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > BackupPC-users mailing list > BackupPC-users@lists.sourceforge.net > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users > Wiki: http://backuppc.wiki.sourceforge.net > Project: http://backuppc.sourceforge.net/ > ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
