On Sat, 23.06.2007 at 22:34:33 -0300, Patrick Boutilier wrote: > Daniel O'Connor wrote: > > On Sunday 24 June 2007 07:37, Gary Mills wrote: > >> For only 30 gigabytes, you might be better off just copying the files > >> over, with IMAP down. It could only take a few hours. You can copy > >> a sample from the live system to get an idea of the timing. > > > > You could rsync the mail spool while it is live, take it down and then > > rsync again. > > > > That should save considerable time as I would imagine the vast majority > > of email would be unchanged between the first & second copy. > > But unfortunately rsync will still have to scan each file to determine > what has changed, and that can chew up a lot of time. Better than to speculate is to measure. Time the rsync of the mailboxes to your new server. *Don't* shutdown cyrus, but rsync right again. Measure the second run, too. This will roughly be your expected downtime. I would be surprised if it is more than 5-10 minutes. You could also do: rsync (long time), rsync (short time), shutdown cyrus, rsync (even shorter time). hth Ulrich Spoerlein -- "The trouble with the dictionary is you have to know how the word is spelled before you can look it up to see how it is spelled." -- Will Cuppy ---- 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
