On Sat, March 12, 2011 3:03 pm, Patrick Boutilier wrote: > On 03/12/2011 09:35 AM, Bron Gondwana wrote: > >> On Sat, Mar 12, 2011 at 02:20:04PM +0100, Simon Matter wrote: >> >>>> I've built a new Cyrus-IMAPd server (hardware). It has two sets >>>> of mirrored disks. The OS is on WD VelociRaptor 450GB drives. The bulk >>>> IMAP data will be on WD Black RE-4 2TB drives. So far, I think >>>> I want to use ZFS for both mirrors. >>>> >>>> >>>> I wanted to see what the list recommends for the migration. >>>> >>>> >>>> The current server is running FreeBSD 8.2, with cyrus-imapd-2.3.16 >>>> on a RAID-5 setup on SCSI-UW with 15000RPM drives. We get about 1.5 - >>>> 9MB/s at 80 - 100% busy according to "systat -vm 1" for most >>>> of the day. >>>> >>>> The existing server has no metadata partition. On the new server, >>>> I believe that I want to put the config directory and metadata >>>> partition on the 46050GB drives and the message files on the 2TB >>>> drives. >>>> >>>> Can I configure the new server's imapd.conf to put data where I >>>> want it, and simply use the cyrus replication to put the data in the >>>> right place on the new server? In other words can the migration split >>>> my data partition into data and metadata partitions without my having to >>>> script up shuffling files around then reconfiguring and restarting >>>> cyrus? >>> >>> I can't comment on this one. I've tried metadata partitions but never >>> tried doing it online. >> >> Cyrus won't move them for you, and I don't think there is even a tool >> to do it. Sorry. > > I used tools/migrate-metadata from the source tarball (2.3.16) to > migrate an existing setup (same server) to using a metadata partition. Hello, We used the same script for a successful data/metadata split of a 500k mailbox server last September. Because we have nine partitions, the script was tweaked a little bit to perform the conversions in parallel and secondly, to allow for a quick rollback, the 'move' operation was changed to a 'copy'. The metadata files were only removed from the data partitions at a later stage, using a simple 'find'. Eric Luyten, Computing Centre VUB/ULB. ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
