On 28 Oct 2009, at 09:43, David Mayo wrote: > I am now looking at transferring our users to the new back-end server. > The XFER command seems to do the job perfectly, except for the seen > and > subscription databases because we are changing formats from flat to > skplist. > Looking at the telemetry, it appears the XFER command just dumps > everything raw and the other end slurps it in without > interpretation. We > get lots of errors in the logs[1] and unfortunately the sync client > doesn't take too kindly to this either, and bails out! That's correct. > Our users won't accept losing their seen state. I can convert the seen > state before/after the XFER with a bit of work, however does anyone > knew > of a cleaner solution that saves me having to run two different > processes? I'm not aware of an off-the-shelf solution. It might be possible for undump_mailbox() to examine the xfer'd data and convert it before instantiating it. flat doesn't have a magic number, but skiplist does. Presumably BDB does too, tho Cyrus doesn't know about it directly. A general solution would probably be hard and/or ugly. If it were me, I'd probably keep the file formats the same until XFER is complete and convert after the fact. :wes ---- 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
