On Mon, Oct 31, 2011 at 01:58:01PM -0700, Andrew Morgan wrote: > On Mon, 31 Oct 2011, Martin Kraus wrote: > > > hi. I have several hundred gigs of mail messages on a partition and I'd > > like to move it to a different partition but copying takes a very long > > time and I don't want to have such a long downtime. I was wondering if > > the renamemailbox command moves a whole mailbox to a different cyrus > > partition online including the whole mailbox hierarchy? > > If I remember correctly, Cyrus will lock the mailbox while it moves it. I > try to do mailbox moves during low usage times, but I don't bother > scheduling an outage for it. I've never had any users complain. Honestly, replication is much nicer than anything else for this! I wonder if we could use the replication engine to do partition moves locally. Basically, it does three passes - so the final moment in which the lock is required is very short - there is very little data to transfer, and all the files required are hot in cache. For a rename within a single filesystem there's less clear value in the idea - you're bargaining on the links taking a long enough time to justify the multiple rewrites of the cyrus.index rather than just copying the files over. Bron. ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
