> To summarize, the situation isn't that different from the 'normal' > situation. After all, even a single instance of cyrus running on one > machine contains multiple imapds (at least abt one per connection, on > my current, non-clustered system, abt 1500 at a time). And they all > access the same config dir, the same spool. They are permorming just the > waltz you mentioned - with file locks. They don't communicate by other > means than the file system. The master process only spawns them. The > same works with 'independent' instances as well. Read the threads. There > are at least two sites doing just the thing mentioned, having had it in > production use for years. Thank you Janne for this insight. Your line about master spawning multiple imapd instances shed a lot of light. I realize you are right. I stand corrected. > To spare you some time in reading through the threads, here is a pointer > to some relevant information: > > http://irbs.net/internet/info-cyrus/0607/0449.html Thanks. Now, one question that is a bit off topic, why is NFSv4 locking so bad? Couldn't they (Powers that Be) fix it, so it behaves like a normal (albeit, networked) file system? Nix. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html