(Illustration by Gaich Muramatsu)
> > > >Let's say I have a system with 100 servers, each serving up files from a > > > >large not-heavily-used archive to a local cluster of machines. I have > > > >these servers in place already for other purposes; using CODA to make > > > >the archive available is just one more benefit. > > > > > > CODA does not serve data from other file systems. Data in a CODA > > > server must be stored in CODA via coda. NFS can export an existing > > > file system. CODA can not do this. > > > > I know what you're saying and I understand. I was thinking of a "volume" > > as a filesystem that is "served" by the various servers to all of the > > clients. The volume I was referring to was for this example the "large > > not-heavily-used archive". > > But I think, if I understand what you want to do, you can make each of > those "servers" be Coda *clients*, and have them serve out to their > local clients via NFS or HTTP. Would that meet your needs? I thought about this... It meets the needs in that it allows each of the subnet servers to provide the fast file response while keeping multiple copies across a few back-room servers. The goal it doesn't meet is the scaleability aspect. If I've got these 100 servers sitting around caching files, then really they're wasting a lot of disk space. There are lots of ways I could set up our servers here (which is nowhere close to the size I'm using in my example, but I like to plan ahead :-) and, being somewhat of an optimizer and perfectionist, am trying to find the best possible choice for both speed and capacity. > There have been, of course, a number of research projects on similar > things (see Darrell Long's Swift, TicketTAIP, and CHEOPS, to name just > three). AFAIK, none of that has been integrated with Coda. Would make > an interesting project. It would. It's actually one I started some serious thinking about at one point, but the reality is that I don't have the time or the knowledge of the linux kernel to actually undertake a project like that. Brian ( bcwhite_at_precidia.com ) ------------------------------------------------------------------------------- On the road to success, you can be sure of one thing... there is never a crowd on the extra mile.Received on 2003-02-26 14:30:24