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On Tue, 2003-06-03 at 23:14, niblettda@gru.com wrote: > I've been researching GFS for a few years now, back when it > was sponsored by Sistina. I think I'm finally at a point > that I could use it, and I wanted to see if it was at a point > that it would be useful for me. > > Admittedly I don't understand a lot of the low level details > of how the FS works. So I don't really follow most of the bug > details. > > What I would like to do is have 4 nodes all serving SMTP, POP, > FTP, etc (standard ISP services) that read/write to a central > data store, Compaq SAN MSA1000 device. Basically, all user > data will be stored there, and I'll load balance across the > 4 machines. My main questions are: > > Will the performance be good/bad/ugly enough for a moderate > number (say 25-50 simultaneous) reads/writes from each node? > > I read and followed most of the HOWTO on the no-pool, since > I don't want a single lock server. Is that feature ready > for a production environment? I don't think having pools has anything to do with having multiple lock servers. Certainly the no pool code works, although I can only vouche for it working over a 2 week period, my test setup has since been dismantled. > > Should a node die, with open files, will ogfs eventually release > the locks so that other nodes can access the file? How long > before the locks get released? Yes. The length of time depends on the timeout you set in the configuration file. As soon as the failed node has been stomith'd, the other nodes can replay the failed node's journal(s) and can access the locked files. > > I'm also investigating purchasing GFS from Sistina, but if ogfs > will accomplish the job, then why not. We have a Sistina GFS cluster (8 nodes) running a rather old version, in my brief test, ogfs seemed at least as good - but I haven't tried the latest's release from Sistina which promised much improved performance. > > Thanks all. > > -- > David A. Niblett | email: niblettda@gru.net > Network Administrator | Phone: (352) 334-3400 > Gainesville Regional Utilities | Web: http://www.gru.net/ > > > > ------------------------------------------------------- > This SF.net email is sponsored by: eBay > Get office equipment for less on eBay! > http://adfarm.mediaplex.com/ad/ck/711-11697-6916-5 > _______________________________________________ > Opengfs-users mailing list > Opengfs-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/opengfs-users > ------------------------------------------------------- This SF.net email is sponsored by: Etnus, makers of TotalView, The best thread debugger on the planet. Designed with thread debugging features you've never dreamed of, try TotalView 6 free at www.etnus.com. _______________________________________________ Opengfs-users mailing list Opengfs-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opengfs-users