Hi all, just to comment on one isolated point: On Thu, Nov 23, 2006 at 08:42:16AM +0100, Simon Matter wrote: [...] > 2) Several people on this list have confirmed that they are running > cyrus-imapd clusters on shared storage (SAN) which works fine with a > cluster filesystem. That tells me that shared access to cyrus databases > works fine as long as the filesystem used provides proper locking, which > means in case of a cluster that the cluster filesystem has to coordinate > locking among all cluster members. Isn't that the main reason why those > filesystems exist? [...] You're completely correct, this is the kind of system I'm building and others have had in production use (see the thread on clusters, GFS and HA, for instance - begins at http://www.mail-archive.com/info-cyrus@xxxxxxxxxxxxxxxxxxxx/msg30675.html (couldn't open the official info-cyrus archive)). So you /can/ run Cyrus on multiple servers accessing the same mailboxes database. Just don't use BDB. Don't even compile it in. --Janne Peltonen IMAP admin Univ. of Helsinki ---- 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